Remove some arbitrary limits on goto numbers and relations.

[bison.git] / ChangeLog

2004-10-22  Akim Demaille  <akim@epita.fr>
       and  Paul Eggert  <eggert@cs.ucla.edu>

        Remove some arbitrary limits on goto numbers and relations.
        * src/lalr.c (goto_map, ngotos, from_state, to_state): Omit
        initial values, since they're never used.
        (set_goto_map): ngotos is now unsigned, so test for overflow
        by seeing whether it wraps around to zero.
        * src/lalr.h (goto_number): Now size_t, not short int.
        (GOTO_NUMBER_MAXIMUM): Remove.
        * src/relation.c (relation_print, traverse, relation_transpose):
        Check for END_NODE rather than looking at sign.
        * src/relation.h (END_NODE): New macro.
        (relation_node): Now size_t, not short int.

2004-10-22  Paul Eggert  <eggert@cs.ucla.edu>

        * doc/bison.texinfo (Language and Grammar): In example, "int" is a
        keyword, not an identifier.  Problem reported by Baron Schwartz in
        <http://lists.gnu.org/archive/html/bug-bison/2004-10/msg00017.html>.

2004-10-11  Akim Demaille  <akim@epita.fr>

        * src/symtab.c (symbol_check_alias_consistency): Also check
        type names, destructors, and printers.
        Reported by Alexandre Duret-Lutz.
        Recode the handling of associativity and precedence in terms
        of symbol_precedence_set.
        Accept no redeclaration at all, not even equal to the previous
        value.
        (redeclaration): New.
        Use it to factor redeclaration complaints.
        (symbol_make_alias): Don't set the type of the alias, let
        symbol_check_alias_consistency do it as for other features.
        * src/symtab.h (symbol): Add new member prec_location, and
        type_location.
        * src/symtab.c (symbol_precedence_set, symbol_type_set): Set them.
        * tests/input.at (Incompatible Aliases): New.

2004-10-09  Paul Eggert  <eggert@cs.ucla.edu>

        .cvsignore fixes to accommodate gnulib changes,
        and the practice of naming build directories "_build".
        * .cvsignore: Add "_*".  Sort.
        * lib/.cvsignore: Add getopt_.h, xalloc-die.c.
        * m4/.cvsignore: Add "*_gl.m4".

2004-10-06  Akim Demaille  <akim@epita.fr>

        * src/parse-gram.y (add_param): Fix the truncation of trailing
        spaces.

2004-10-05  Akim Demaille  <akim@epita.fr>

        In Bison 1.875's yacc.c, YYLLOC_DEFAULT was called regardless
        whether the reducion was empty or not.  This leaves room to
        improve the use of YYLLOC_DEFAULT in such a case.
        lalr1.cc is still experimental, so changing this is acceptable.
        And finally, there are probably not many users who changed the
        handling of locations in GLR, so changing is admissible too.

        * data/glr.c, data/lalr1.cc, data/yacc.c (YYLLOC_DEFAULT): On an
        empty reduction, set @$ to an empty location ending the previously
        stacked symbol.
        Adjust uses to make sure the code is triggered on empty
        reductions.
        * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Adjust the
        expected output: empty reductions have empty locations.

2004-09-29  Akim Demaille  <akim@epita.fr>

        * data/lalr1.cc: Move towards a more standard C++ coding style
        for templates: Class < T > -> Class<T>.

2004-09-29  Akim Demaille  <akim@epita.fr>

        * data/lalr1.cc: Reinstall the former ctor, for sake of
        compatibility, but warn it will be removed.
        Move towards a more standard C++ coding style (i.e., type *var ->
        type* var).

2004-09-27  Paul Eggert  <eggert@cs.ucla.edu>

        * src/parse-gram.y (add_param): Rewrite to avoid strchr,
        since it's less likely to work if NULs are involved in the future.

2004-09-27  Akim Demaille  <akim@epita.fr>

        * data/yacc.c (YY_LOCATION_PRINT): Fix its default declaration.

2004-09-27  Akim Demaille  <akim@epita.fr>

        * data/lalr1.cc (b4_parse_param_decl_1): New.
        (b4_parse_param_decl): Use it to have different names between attribute
        and argument names.
        (b4_cc_constructor_call): Likewise.

2004-09-24  Akim Demaille  <akim@epita.fr>

        * src/parse-gram.y (add_param): Strip the leading and trailing
        blanks from a formal argument declaration.
        (YY_LOCATION_PRINT): New.

2004-09-24  Akim Demaille  <akim@epita.fr>

        * data/c.m4 (b4_yysymprint_generate): Move the YYINPUT invocation
        after the location.

2004-09-24  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo (Table of Symbols): Sort.

2004-09-21  Akim Demaille  <akim@epita.fr>

        * data/yacc.c, data/glr.c (b4_at_dollar, b4_dollar_dollar): Remove
        the useless parentheses.
        Suggested by Paul Eggert.

2004-09-20  Akim Demaille  <akim@epita.fr>

        Let the initial-action act on the look-ahead, and use it for the
        "initial push" (corresponding to an hypothetical beginning-of-file).
        And let lalr1.cc honor %initial-action.

        * doc/bison.texinfo (Initial Action Decl): Clarify, and add an
        example.
        * data/lalr1.cc (Parser::initlocation_): Remove, bad experiment.
        (Parser::Parser): Remove the ctor that used to initialize it.
        (Parser::parse): Like in the other skeletons, issue the "starting
        parse" message before any action.
        Honor %initial-action.
        Initialize the stacks with the lookahead.
        * data/yacc.c: Let $$ and @$ in %initial-action designate the
        look-ahead.
        Push them in the stacks.
        * tests/actions.at, tests/calc.at: Adjust the C++ ctor invocations.

2004-09-20  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo (Initial Action Decl): New.

2004-09-20  Akim Demaille  <akim@epita.fr>

        * data/yacc.c (YY_LOCATION_PRINT): Use YYLTYPE_IS_TRIVIAL as a
        clearer criterion to define it.
        (parse): Initialize the initial location when YYLTYPE_IS_TRIVIAL.
        When reducing on an empty RHS, use the latest stacked location as
        location.
        yylloc is not always available.
        * data/glr.c: Likewise.
        Also, honor initial-actions.

2004-09-20  Akim Demaille  <akim@epita.fr>

        * data/yacc.c (YY_LOCATION_PRINT): New.
        Define when we know YYLTYPE's structure, i.e., when the default
        YYLLOC_DEFAULT is used.
        * data/c.m4 (b4_yysymprint_generate): Use it.
        * data/lalr1.cc (YYLLOC_DEFAULT): Stop relying on the initial
        value of the result.
        (error_start_): Replace with...
        (error_range_): this location array.
        This allows to replace code relying on the implementation of
        locations by portable code.
        * data/yacc.c (yylerrsp): Replace with...
        (yyerror_range): this.
        Every time a token is popped, update yyerror_range[0], to have an
        accurate location for the error token.
        * data/glr.c (YY_LOCATION_PRINT): New.
        (yyprocessOneStack): Fix an invocation of YY_SYMBOL_PRINT:
        deference a pointer.
        * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): No longer
        report the location in %printers.

        * src/scan-skel.l: Instead of abort, report error messages to ease
        understanding skeleton scanning failures.

2004-09-16  Akim Demaille  <akim@epita.fr>

        * data/lalr1.cc (Stack::Iterator, Stack::ConstIterator): Rename as...
        (iterator, const_iterator): these, to be more in the C++ spirit.
        Also, return reverse iterators so that when displaying the stack
        we display its bottom first.
        (Parser::stack_print_, Parser::reduce_print_): Match the messages
        from yacc.c.
        We should probably use vector here though.

2004-09-16  Akim Demaille  <akim@epita.fr>

        Have more complete shift traces.

        * data/yacc.c, data/lalr1.c, data/glr.c: Use YY_SYMBOL_PRINT
        to report Shifts instead of ad hoc YYDPRINTF invocations,
        including for the error token.
        * data/lalr1.cc (symprint_): Output the location.
        * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): In C++, don't
        output the location within the %printer.
        Activate GLR tests, at least to make sure they compile properly.
        They still don't pass though.
        * tests/calc.at: Adjust expect verbose output, since now "Entering
        state..." is on a different line than the "Shifting" message.

2004-09-08  Akim Demaille  <akim@epita.fr>

        * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Move the
        Bison directive from the Bison file to the invocation of this
        macro, so that these directives are passed to
        AT_BISON_OPTION_PUSHDEFS to get correct help macros.
        Use these helping macros (e.g., AT_LOC, AT_VAL and so forth).
        Move the AT_SETUP/AT_CLEANUP outside, to report as test title
        the extra Bison directives instead of the whole series.
        Change the grammar so that there are recoverable errors, and
        unrecoverable errors.  Now we can have the parser give up before
        consuming the whole input.  As a result we now can observe that
        the lookahead is freed when needed.
        Change the parser source to parse argv[1] instead of a hard coded
        string.
        Simplify yylex, and give a value and location to EOF.
        Simplify some invocations of AT_CHECK_PRINTER_AND_DESTRUCTOR that
        passed directives already coded in the file.
        Add some tests to check the location of "error".
        For some tests, the C++ parser is correct, and not yacc.c.
        For other tests, they provide different, but unsatisfying, values,
        so keep the C++ value so that at least one parser is "correct"
        according to the test suite.
        (Actions after errors): Remove, this is subsumed by the
        AT_CHECK_PRINTER_AND_DESTRUCTOR series.

2004-09-06  Akim Demaille  <akim@epita.fr>

        * data/lalr1.cc: Adjust the indentation of the labels.
        (Parser::pop): New.
        Use it.

2004-09-06  Akim Demaille  <akim@epita.fr>

        * data/yacc.cc, data/glr.cc (yydestruct): Accept an additional
        argument, an informative message.
        Call YY_SYMBOL_PRINT.
        Adjust all callers: integrate the associated YY_SYMBOL_PRINT.
        * data/lalr1.cc (destruct_): Likewise.
        In addition, no longer depend on b4_yysymprint_generate and
        b4_yydestruct_generate to generate these functions, do it "by
        hand".

2004-09-03  Akim Demaille  <akim@epita.fr>

        * data/glr.c, data/lalr1.cc, data/yacc.c: When YYABORT was
        invoked, yydestruct the lookahead.
        * tests/calc.at (Calculator $1): Update the expected lengths of
        traces: there is an added line for the discarded lookahead.
        * doc/bison.texinfo (Destructor Decl): Some rewording.
        Define "discarded" symbols.

2004-09-02  Akim Demaille  <akim@epita.fr>

        * data/lalr1.cc (translate_, destruct_): No reason to be static.

2004-09-02  Akim Demaille  <akim@epita.fr>

        * data/glr.c, yacc.c (YYDSYMPRINT): Remove, not used.
        (YYDSYMPRINTF): Rename as...
        (YY_SYMBOL_PRINT): this.
        * data/lalr1.cc (YY_SYMBOL_PRINT): New, modeled after the previous
        two.
        Use it instead of direct symprint_ calls.
        (yybackup): Tweak the "Now at end of input" case to match yacc.c's
        one.

2004-09-02  Akim Demaille  <akim@epita.fr>

        * data/lalr1.cc (b4_yysymprint_generate): New.
        (symprint_): New member function, defined when YYDEBUG.
        Use it consistently instead of token/nterm debugging output by
        hand.
        * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Adjust
        %printer calls to use cdebug_ when using lalr1.cc.

2004-08-30  Florian Krohm  <florian@edamail.fishkill.ibm.com>

        * data/glr.c: Guard the declarations of yypstack and yypdumpstack
        with #ifdef YYDEBUG.

2004-08-26  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo (Implementing Loops): Rename as...
        (Implementing Gotos/Loops): this.

2004-08-13  Paul Eggert  <eggert@cs.ucla.edu>

        Adjust to latest gnulib.
        * bootstrap (gnulib_modules): Add xalloc-die.
        Set LC_ALL=C so that file names sort consistently.
        Prefer the gnulib copies of gettext.m4, glibc21.m4,
        inttypes_h.m4, lib-ld.m4, lib-prefix.m4, po.m4, stdint_h.m4,
        uintmax_t.m4, ulonglong.m4.
        (intl_files_to_remove): Add gettext.m4, lib-ld.m4, lib-prefix.m4,
        po.m4 since we are now using _gl.m4 instead.

2004-08-10  Florian Krohm  <florian@edamail.fishkill.ibm.com>

        * src/scan-action.l: Remove. Scanning of semantic actions is
        handled in scan-gram.l.

2004-08-07  Florian Krohm  <florian@edamail.fishkill.ibm.com>

        * src/scan-gram.l (handle_syncline): Use uniqstr_new not xstrdup.

        * src/location.h (struct): The file member is a uniqstr.
        (equal_boundaries): Use UNIQSTR_EQ for comparison.

2004-07-22  Paul Eggert  <eggert@cs.ucla.edu>

        Fix bug with non-%union parsers that have printers or destructors,
        which led to a Bison core dump.  Reported by Peter Fales in
        <http://lists.gnu.org/archive/html/bug-bison/2004-07/msg00014.html>.

        * data/c.m4 (b4_symbol_actions): Don't assume %union was used.
        * data/lalr1.cc (yystype) [defined YYSTYPE]: Define to YYSTYPE,
        not to our own type.
        * src/output.c (symbol_destructors_output, symbol_printers_output):
        Don't assume %union.
        * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR,
        AT_CHECK_PRINTER_AND_DESTRUCTOR): New argument
        UNION-FLAG.  All callers changed.
        (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Don't assume %union.
        Use type char, not unsigned int, when declaring an array of char;
        this lets us remove a cast.
        (Printers and Destructors): Add non-%union test cases.

2004-06-21  Paul Eggert  <eggert@cs.ucla.edu>

        * doc/bison.texinfo: Minor editorial changes, mostly to the new
        GLR writeups.  E.g., avoid frenchspacing and the future tense,
        change "lookahead" to "look-ahead", and change "wrt" to "with
        respect to".

2004-06-21  Paul Hilfinger  <hilfingr@CS.Berkeley.EDU>

        * doc/bison.texinfo (Merging GLR Parses, Compiler Requirements):
        New sections, split off from the GLR Parsers section.  Put the new
        Simple GLR Parser near the start of the GLR section, for clarity.
        Rewrite connective text.

2004-06-21  Frank Heckenbach  <frank@g-n-u.de>

        * doc/bison.texinfo (Simple GLR Parsers): New section.

2004-06-21  Paul Eggert  <eggert@cs.ucla.edu>

        * NEWS, TODO, doc/bison.texinfo:
        Use "look-ahead" instead of "lookahead", to be consistent.
        * REFERENCES: Fix incorrect reference to DeRemer and Pennello,
        while we're fixing "look-ahead".
        * src/conflicts.c (shift_set): Renamed from shiftset.
        (look_ahead_set): Renamed from lookaheadset.
        * src/print.c: Likewise.
        * src/getargs.c (report_args): Add "look-ahead" as the new canonical
        name for "lookahead".
        (report_types, usage): Likewise.
        * src/getargs.h (report_look_ahead_tokens): Renamed from
        report_lookaheads.
        * src/lalr.c (compute_look_ahead_tokens): Renamed from
        compute_lookaheads.
        (state_look_ahead_tokens_count): Renamed from state_lookaheads_count.
        (look_ahead_tokens_print): Renamed from lookaheads_print.
        * src/state.c (state_rule_look_ahead_tokens_print): Renamed from
        state_rule_lookaheads_print.
        * src/state.h: Likewise.
        (reductions.look_ahead_tokens): Renamed from lookaheads.
        * tests/torture.at (AT_DATA_LOOK_AHEAD_TOKENS_GRAMMAR): Renamed from
        AT_DATA_LOOKAHEADS_GRAMMAR.

2004-06-03  Paul Eggert  <eggert@cs.ucla.edu>

        * README: Update location of patched M4 distribution.

2004-05-30  Albert Chin-A-Young  <china@thewrittenword.com>

        Don't assume the C++ compiler takes the same arguments as the C compiler
        (trivial change).
        * configure.ac (O0CXXFLAGS): New var.
        * tests/atlocal.in (CXXFLAGS): Use it.

2004-05-29  Paul Eggert  <eggert@cs.ucla.edu>

        Fix some "make check" problems with C++ reported by
        Albert Chin-A-Young for Tru64 C++ in this thread:
        http://lists.gnu.org/archive/html/bug-bison/2004-05/msg00049.html

        * m4/cxx.m4 (BISON_TEST_FOR_WORKING_CXX_COMPILER): Check for std::cerr.
        * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR):
        Output to a .cc file for C++, not to a .c file.
        * tests/calc.at (AT_CHECK_CALC): Likewise.
        * tests/regression.at (AT_CHECK_DANCER): Likewise.
        * tests/local.at (AT_COMPILE_CXX): Default to OUTPUT.cc, not OUTPUT.c.

2004-05-28  Albert Chin-A-Young  <china@thewrittenword.com>

        * tests/calc.at, tests/actions.at: Workaround for SGI
        C++ compiler.  (trivial change)

2004-05-27  Paul Eggert  <eggert@cs.ucla.edu>

        Spent a few hours checking out which prerequisite versions the
        current sources actually require.  I went all the way back to
        Gettext 0.10.40, Automake 1.4, and Autoconf 2.57 and investigated
        a seemingly endless set of combinations of versions more recent
        than that.  The bottom line is that the current sources require
        fairly recent versions of the build tools, and it'll be some work
        to change this.
        * configure.ac (AC_PREREQ): Increase from 2.58 to 2.59.
        (AM_INIT_AUTOMAKE): Increase from 1.7 to 1.8.
        (AM_GNU_GETTEXT_VERSION): Increase from 0.11.5 to 0.12.
        Add comments explaining why those particular versions are
        currently needed.

        * src/parse-gram.y (lloc_default): Rewrite to avoid compiler bug
        in SGI MIPSpro 7.4.1m.  Problem reported by Albert Chin-A-Young in
        <http://mail.gnu.org/archive/html/bug-bison/2004-05/msg00037.html>.

        * configure.ac (AC_PREREQ): Bump to 2.58, since 2.57 doesn't work
        (it fails with a Autoconf-without-aclocal-m4 diagnostic).

2004-05-26  Paul Eggert  <eggert@cs.ucla.edu>

        * configure.ac (AM_GNU_GETTEXT_VERSION): Lower it from 0.14.1 to
        0.11.5.  Suggested by Bruno Haible.
        * bootstrap: Remove gettext version checking.

        * doc/bison.texinfo (Decl Summary): Also mention that %union
        can depend on prerequisite types.  Problem reported by Tim
        Van Holder.

2004-05-25  Paul Eggert  <eggert@cs.ucla.edu>

        * README: Mention GNU m4 1.4 bugs and Akim's patched version.
        * README-alpha: Don't tell people not to package this.

        * bootstrap: Don't assume $(...) works; use `...` instead.
        Problem reported by Paul Hilfinger.  Also, diagnose non-GNU
        gettext better.

        * doc/bison.texinfo (Decl Summary, Bison Options): Clarify what's
        put into the -d output file, and mention what to do if YYSTYPE is
        defined as a macro.

2004-05-24  Paul Eggert  <eggert@cs.ucla.edu>

        Undo change made earlier today: it caused autopoint to not bring
        in ABOUT-NLS.  Ouch.  Instead, substitute our own diagnostic for
        autopoint's.

        * bootstrap: Check that gettext version matches what's in
        configure.ac.  Warn users to ignore robots.txt ERROR 404.
        * bootstrap: Undo today's earlier change (logged below).
        * configure.ac (AM_GNU_GETTEXT_VERSION): Likewise.

        The gettext version checking is causing more trouble than it's
        curing; remove it.  Problem reported by Paul Hilfinger.

        * bootstrap: Issue a warning that one can expect a message
        'AM_GNU_GETTEXT is used, but not AM_GNU_GETTEXT_VERSION'.
        * configure.ac (AM_GNU_GETTEXT_VERSION): Remove.

2004-05-23  Paul Eggert  <eggert@cs.ucla.edu>

        Ensure that the C++ compiler used for testing actually works on a
        simple test program; if not, skip the C++-related tests.  Problem
        reported by Vin Shelton in:
        http://mail.gnu.org/archive/html/bug-bison/2004-05/msg00026.html

        * m4/cxx.m4: New file.
        * configure.ac (BISON_TEST_FOR_WORKING_CXX_COMPILER): Add.
        * tests/atlocal.in (BISON_CXX_WORKS): Add.
        * tests/local.at (AT_COMPILE_CXX): Use it.

2004-05-21  Paul Eggert  <eggert@cs.ucla.edu>

        * data/glr.c (yylloc): Output this macro even if locations are not
        being generated, as the GLR parser needs it even in that case.
        Problem reported by Troy A. Johnson
        <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=195946>.

        * configure.ac (AC_INIT): Update to 1.875e.

2004-05-21  Paul Eggert  <eggert@cs.ucla.edu>

        * NEWS: Version 1.875d.
        * configure.ac (AC_INIT): Likewise.
        * src/parse-gram.c, src/parse-gram.h: Regenerate with 1.875d.

        * configure.ac (--enable-gcc-warnings): Do not enable -Wshadow,
        -Wmissing-prototypes, or -Wstrict-prototypes for C++.  The current
        lalr1.cc runs afoul of the first, and the last two are no longer
        supported by GCC 3.4.0.
        * README: Mention GNU m4 1.4 or later; mention m4 patches.
        * HACKING: Use ./bootstrap, not "make update" to import foreign files.

2004-05-06  Paul Eggert  <eggert@cs.ucla.edu>

        * src/muscle_tab.c (hash_muscle): Accept and return size_t, not
        unsigned int, for compatibility with latest gnulib hash module.
        * src/state.c (state_hash, state_hasher): Likewise.
        * src/symtab.c (hash_symbol, hash_symbol_hasher): Likewise.
        * src/uniqstr.c (hash_uniqstr): Likewise.

2004-05-03  Paul Eggert  <eggert@cs.ucla.edu>

        * NEWS: Unescaped newlines are no longer allowed in char & strings.

        * src/scan-gram.l (<SC_ESCAPED_STRING,SC_ESCAPED_CHARACTER,
        SC_CHARACTER,SC_STRING>): Reject unescaped newlines in
        character and string literals.
        (unexpected_end): New function.
        (unexpected_eof): Use it.
        (unexpected_newline): New function.
        (<INITIAL,SC_AFTER_IDENTIFIER,SC_PRE_CODE>): Coalesce duplicate
        actions.

        * NEWS: Document %expect-rr.

        * bootstrap (--gnulib-srcdir=*, --cvs-user=*):
        Fix typo by replacing $1 with $option.
        Remove more 'intl'-related files.
        Don't DEFUN AM_INTL_SUBDIR twice.

        * lib/.cvsignore: Add strndup.h.  Remove memchr.c, memcmp.c,
        memrchr.c, strcasecmp.c, strchr.c, strrchr.c, strspn.c, strtol.c,
        strtoul.c.
        * m4/.cvsignore: Add exitfail.m4, extensions.m4, gnulib.m4,
        hard-locale.m4, mbstate_t.m4, strerror_r.m4, strndup.m4,
        xstrndup.m4.  Remove glibc21.m4, intdiv0.m4, inttypes-pri.m4,
        inttypes.m4, inttypes_h.m4, isc-posix.m4, lcmessage.m4,
        stdint_h.m4, uintmax_t.m4, ulonglong.m4.
        * src/.cvsignore: Add *.output.

        * src/parse-gram.y: Put copyright notice inside %{ %} so it
        gets copied to the output file.

2004-04-28  Paul Eggert  <eggert@twinsun.com>

        Get files from the gnulib and po repositories, instead of relying
        on them being in our CVS.  Upgrade to latest versions of gnulib
        and Automake.

        * Makefile.am (SUBDIRS): Remove m4; Automake now does m4.
        * bootstrap: Bootstrap from gnulib and po repositories.
        Much of this code was stolen from GNU diff and GNU tar's bootstrap.
        * README-cvs: Document these changes.  Remove version numbers from
        mentions of build tools, since they change so often.  Mention Flex.

        * configure.ac (AC_CONFIG_MACRO_DIR): Add, with m4 as arg.
        (gl_USE_SYSTEM_EXTENSIONS): Add.
        (AC_GNU_SOURCE, AC_AIX, AC_MINIX):
        Remove; no longer needed, as gl_USE_SYSTEM_EXTENSIONS
        does this for us.
        (AC_ISC_POSIX): Remove; we no longer support this
        ancient OS, as it gets in the way of latest Autoconf & gnulib.
        (AC_HEADER_STDC): Remove: we now assume C89 or better.
        (AC_CHECK_HEADERS_ONCE): Use instead of AC_CHECK_HEADERS.
        Do not check for C89 headers, except for locale.h which is used
        by the Yacc library and must port to K&R hosts.
        (AC_CHECK_FUNCS_ONCE): Use instead of AC_CHECK_FUNCS.
        Do not check for C89 functions, except for setlocale which is
        used by the Yacc library.
        (AC_CHECK_DECLS, AC_REPLACE_FUNCS): Remove; no longer needed.
        (gl_DIRNAME, gl_ERROR, gl_FUNC_ALLOCA, gl_FUNC_MEMCHR,
        gl_FUNC_MEMRCHR, gl_FUNC_STPCPY, gl_FUNC_STRNLEN, gl_FUNC_STRTOL,
        gl_GETOPT, gl_HASH, gl_MBSWIDTH, gl_OBSTACK, gl_QUOTE,
        gl_QUOTEARG, gl_XALLOC, jm_FUNC_GLIBC_UNLOCKED_IO, jm_FUNC_MALLOC,
        AM_GNU_GETTEXT): Remove; now done by:
        (GNULIB_AUTOCONF_SNIPPET): Add.  "bootstrap" builds this for us.
        (AC_CONFIG_FILES): Remove m4/Makefile, as Automake now does this
        for us.

        * lib/Makefile.am: Include gnulib.mk, built for us by "bootstrap".
        (BUILT_SOURCES, EXTRA_DIST, MOSTLYCLEANFILES):
        Define to empty, as gnulib.mk will do the rest for us.
        ($(libbison_a_OBJECTS), stdbool.h): Remove, as gnulib.mk does this
        for us.
        (libbison_a_SOURCES): Define to $(lib_SOURCES) now.
        (lib_SOURCES): New symbol, containing only the non-gnulib libs.

        * src/files.c: Include gnulib's xstrndup.h.

        * src/system.h (MALLOC): Use xnmalloc, for better overflow checking.
        (REALLOC): Use xnrealloc, for likewise.
        (xstrndup, stpcpy): Remove decls, as gnulib does this for us now.
        (strnlen, memrchr): Remove decls; functions no longer used.
        Include <stpcpy.h>.

        * config/depcomp, config/install-sh, lib/alloca.c, lib/argmatch.c,
        lib/argmatch.h, lib/basename.c, lib/dirname.c, lib/dirname.h,
        lib/error.c, lib/error.h, lib/getopt.c, lib/getopt.h,
        lib/getopt1.c, lib/gettext.h, lib/hash.c, lib/hash.h,
        lib/malloc.c, lib/mbswidth.c, lib/mbswidth.h, lib/memchr.c,
        lib/memcmp.c, lib/memrchr.c, lib/obstack.c, lib/obstack.h,
        lib/quote.c, lib/quote.h, lib/quotearg.c, lib/quotearg.h,
        lib/realloc.c, lib/stdbool_.h, lib/stpcpy.c, lib/strcasecmp.c,
        lib/strchr.c, lib/strncasecmp.c, lib/strnlen.c, lib/strrchr.c,
        lib/strspn.c, lib/strtol.c, lib/strtoul.c, lib/unlocked-io.h,
        lib/xalloc.h, lib/xmalloc.c, lib/xstrdup.c, lib/xstrndup.c,
        m4/Makefile.am, m4/alloca.m4, m4/dirname.m4, m4/dos.m4,
        m4/error.m4, m4/getopt.m4, m4/hash.m4, m4/malloc.m4,
        m4/mbrtowc.m4, m4/mbswidth.m4, m4/memchr.m4, m4/memcmp.m4,
        m4/memrchr.m4, m4/obstack.m4, m4/onceonly.m4, m4/prereq.m4,
        m4/quote.m4, m4/quotearg.m4, m4/realloc.m4, m4/stdbool.m4,
        m4/stpcpy.m4, m4/strnlen.m4, m4/strtol.m4, m4/strtoul.m4,
        m4/unlocked-io.m4, m4/xalloc.m4, po/LINGUAS, po/Makefile.in.in,
        po/Makevars, po/da.po, po/de.po, po/es.po, po/et.po, po/fr.po,
        po/hr.po, po/id.po, po/it.po, po/ja.po, po/ms.po, po/nl.po,
        po/pt_BR.po, po/ro.po, po/ru.po, po/sv.po, po/tr.po:
        Remove, as these files are now generated automatically
        by bootstrap or automake.

        * po/ChangeLog: Remove: all but one entry was a duplicate
        of this file, and I moved that 2000-11-02 entry here.

        * config/.cvsignore: Add Makefile, depcomp, install-sh.
        * lib/.cvsignore: Add alloca.c, alloca.h, alloca_.h, argmatch.c,
        argmatch.h, basename.c, dirname.c, dirname.h, error.c, error.h,
        exit.h, exitfail.c, exitfail.h, getopt.c, getopt.h, getopt1.c,
        getopt_int.h, gettext.h, gnulib.mk, hard-locale.c, hard-locale.h,
        hash.c, hash.h, malloc.c, mbswidth.c, mbswidth.h, memchr.c,
        memcmp.c, memrchr.c, obstack.c, obstack.h, quote.c, quote.h,
        quotearg.c, quotearg.h, realloc.c, stdbool_.h, stpcpy.c, stpcpy.h,
        strcasecmp.c, strchr.c, stripslash.c, strncasecmp.c, strndup.c,
        strnlen.c, strrchr.c, strspn.c, strtol.c, strtoul.c,
        unlocked-io.h, xalloc.h, xmalloc.c, xstrdup.c, xstrndup.c,
        xstrndup.h.
        * m4/.cvsignore: Remove Makefile, Makefile.in.  Add alloca.m4,
        dirname.m4, dos.m4, error.m4, getopt.m4, hash.m4, mbrtowc.m4,
        mbswidth.m4, obstack.m4, onceonly.m4, quote.m4, quotearg.m4,
        stdbool.m4, stpcpy.m4, strnlen.m4, unlocked-io.m4, xalloc.m4.
        * po/.cvsignore: Add *.po, LINGUAS, Makefile.in.in, Makevars.
        * src/.cvsignore: Remove *_.c.


        * Makefile.maint (GZIP_ENV): Don't use --rsyncable if gzip doesn't
        support it.  (The latest stable gzip doesn't.)

2004-04-27  Paul Eggert  <eggert@twinsun.com>

        * data/lalr1.cc (Parser::stos_) [! YYDEBUG]: Define even in this
        case, as stos_ is now used by destructors due to the 2004-02-09
        change.

        Remove more K&R C support.
        * lib/libiberty.y (PARAMS): Remove.  All uses removed.
        * lib/subpipe.c (errno): Remove decl.
        Include <stdlib.h> unconditionally.
        (EXIT_FAILURE): Remove macro.
        * src/complain.c (vfprintf, strerror): Remove.
        * src/system.h: Include limits.h, stdlib.h, string.h, locale.h
        unconditionally.
        (EXIT_FAILURE, EXIT_SUCCESS, setlocale): Remove defns.
        Use latest Autoconf recommendations for including inttypes.h, stdint.h.
        (strchr, strspn, memchr): Remove decls.
        * tests/calc.at (_AT_DATA_CALC_Y): Include stdlib.h, string.h
        unconditionally.  Do not declare perror.
        * tests/conflicts.at (%nonassoc and eof): Include stdlib.h
        unconditionally.

        * src/complain.c (_): Remove useless defn, as system.h defines this.

        * lib/bitset.h (__INT_TO_PTR): Remove; workaround no longer needed
        with latest obstack.h.
        * lib/ebitset.c (ebitset_elt_alloc): Don't bother to cast args
        to procedure types, as obstack.h now does that for us.
        * lib/lbitset.c (lbitset_elt_alloc): Likewise.

        * lib/subpipe.h [HAVE_SYS_TYPES_H]: Include <sys/types.h>,
        so that this include file can stand alone.
        * lib/subpipe.c: Do not include <sys/types.h>, as subpipe.h
        does this now.  Include subpipe.h first after config.h, to
        test whether it can stand alone.

        * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Don't
        declare yyerror when using lalr.cc, as GCC 3.4.0 warns about the
        unused declaration.

        * tests/synclines.at (%union synch line): Put a dummy member in
        the union, because empty unions aren't allowed in C.  Caught
        by GCC 3.4.0.

2004-04-13  Jim Meyering  <jim@meyering.net>

        * src/conflicts.c (conflicts_print): Correct format string typo:
        use `%%' to produce literal `%'.  (trivial change)

2004-03-30  Paul Eggert  <eggert@twinsun.com>

        * src/getargs.c (version): Update copyright year to 2004.

        * data/c.m4 (b4_int_type): Use 'short int' rather than
        'short', and similarly for 'long', 'unsigned', etc.
        * data/glr.c (YYTRANSLATE, yyconfl, yySymbol, yyItemNum,
        yygetLRActions, yyprocessOneStack, yyrecoverSyntaxError,
        yy_yypstack, yydumpstack): Likewise.
        * data/lalr1.cc (user_token_number_max_, user_token_number_max_,
        translate_, seq_, [], pop, Slice, range_, operator+, operator+=):
        Likewise.
        * data/yacc.c (b4_int_type, yyss, YYSTACK_BYTES, yysigned_char,
        yy_stack_print, yyparse): Likewise.
        * doc/bison.texinfo (Prologue, Multiple Types): Likewise.
        * lib/bbitset.h (bitset_word, BITSET_WORD_BITS): Likewise.
        * lib/bitset.c (bitset_print): Likewise.
        * lib/bitset_stats.c (bitste_log_histogram_print): Likewise.
        * lib/bitsetv-print.c (bitsetv_matrix_dump): Likewise.
        * lib/bitsetv.c (bitsetv_dump): Likewise.
        * lib/ebitset.c (EBITSET_ELT_BITS, ebitset_elt_alloc): Likewise.
        * lib/lbitset.c (LBITSET_ELT_BITS, lbitset_elt_alloc, debug_lbitset):
        Likewise.
        * src/LR0.c (allocate_itemsets): Likewise.
        * src/gram.h (rule_number, rule): Likewise.
        * src/lalr.h (goto_number): Likewise.
        * src/nullable.c (nullable_compute): Likewise.
        * src/output.c (prepare_rules): Likewise.
        * src/relation.c (relation_print, relation_digraph): Likewise.
        * src/relation.h (relation_node): Likewise.
        * src/state.h (state_number, transitions, errs, reductions,
        struct state): Likewise.
        * src/symtab.h (symbol_number, struct symbol): Likewise.
        * src/tables.c (vector_number, tally, action_number,
        default_goto, goto_actions): Likewise.
        * tests/existing.at (GNU Cim Grammar): Likewise.
        * tests/regression.at (Web2c Actions): Likewise.

        * src/output.c (muscle_insert_short_int_table): Renamed from
        muscle_insert_short_table.  All uses changed.

2004-03-25  Paul Hilfinger  <hilfingr@tully.CS.Berkeley.EDU>

        * src/parse-gram.y: Define PERCENT_EXPECT_RR.
        (declaration): Replace expected_conflicts with expected_sr_conflicts.
        Add %expect-rr rule.

        * src/scan-gram.l: Recognize %expect-rr.

        * src/conflicts.h (expected_sr_conflicts): Rename from
        expected_conflicts.
        (expected_rr_conflicts): Declare.

        * src/conflicts.c (expected_sr_conflicts): Rename from
        expected_conflicts.
        (expected_rr_conflicts): Define.
        (conflicts_print): Check r/r conflicts against expected_rr_conflicts
        for GLR parsers.
        Use expected_sr_conflicts in place of expected_conflicts.
        Warn if expected_rr_conflicts used in non-GLR parser.

        * doc/bison.texinfo: Add documentation for %expect-rr.

2004-03-08  Paul Eggert  <eggert@gnu.org>

        Add support for hex token numbers.  Suggested by Odd Arild Olsen in
        <http://mail.gnu.org/archive/html/bison-patches/2004-03/msg00000.html>.

        * NEWS: Document hexadecimal tokens, no NUL bytes, %destructor
        in lalr1.cc.
        * doc/bison.texinfo (Token Decl): Add hexadecimal token numbers.
        * src/scan-gram.l (scan_integer): New function.
        ({int}): Use it.
        (0[xX][0-9abcdefABCDEF]+): New pattern, to support hex numbers.
        (<SC_ESCAPED_STRING,SC_ESCAPED_CHARACTER>, \\x[0-9abcdefABCDEF]+,
        handle_action_dollar, handle_action_at, convert_ucn_to_byte):
        Say "long int", not "long", for uniformity with GNU style.

2004-02-25  Paul Eggert  <eggert@twinsun.com>

        * tests/local.at (AT_COMPILE, AT_COMPILE_CXX): Ignore stdout from
        compilers.  This fixes a problem with Intel's C++ compiler being
        chatty, reported by Guido Trentalancia in
        <http://mail.gnu.org/archive/html/bug-bison/2004-02/msg00030.html>.

2004-02-09  Alexandre Duret-Lutz  <adl@gnu.org>

        Support %destructor and merge error locations in lalr1.cc.

        * data/lalr1.cc (b4_cxx_destruct_def): New macro.
        (Parser::stos_): Define unconditionally.
        (Parser::destruct_): New method.  Generate its body with
        b4_yydestruct_generate.
        (Parser::error_start_): New attribute.
        (Parser::parse) <yyerrlab, yyerrlab1>: Call destruct_ on erroneous
        token which are discarded.
        (Parser::parse) <yyerrlab, yyerrorlab, yyerrlab1>: Update
        error_start_ when erroneous token are discarded.
        (Parser::parse) <yyerrlab1>: Compute the location of the error
        token so that it covers all the discarded tokens.
        * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Adjust so
        it can be called with `%skeleton "lalr1.cc"', and do that.

2004-02-02  Paul Eggert  <eggert@twinsun.com>

        * src/Makefile.am (AM_CPPFLAGS): New macro.  It mentions
        $(top_srcdir)/lib and ../lib.  This fixes a bug reported
        by Paul Hilfinger; the old INCLUDES value didn't mention ../lib.
        There's no need to mention top_builddir since Automake does that
        for us.
        (INCLUDES): Remove, as Automake says it's obsolescent.
        Contents migrated into AM_CPPFLAGS as described above.
        * lib/Makefile.am (INCLUDES): Remove; obsolescent.

2004-01-14  Paul Hilfinger  <hilfingr@CS.Berkeley.EDU>

        * data/glr.c (yytokenName): Bullet-proof against YYEMPTY token.
        (yyreportSyntaxError): Handle case where lookahead token is
        YYEMPTY.

2004-01-13  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>

        * data/glr.c: Put casts on uses of YYREALLOC and YYMALLOC so that
        resulting parsers are compilable with C++.

2003-12-23  Paul Eggert  <eggert@twinsun.com>

        * config/depcomp, config/install-sh: Sync with Automake 1.8.
        * src/output.c (output_skeleton): Rename local var.
        * tests/input.at (Torturing the Scanner): Don't use \x0 or \0 in
        Bison tokens, as this runs afoul of the 2003-10-07 change that
        disallowed NUL bytes in character constants or string literals.

        * tests/local.at: Require Autoconf 2.59's Autotest.
        * tests/testsuite.at: Don't include local.at, since we now assume
        Autoconf 2.59 or later.  Autoconf 2.59 had some problems with
        including it.
        * tests/Makefile.am ($(TESTSUITE)): Remove warning about ignoring
        multiple inclusion warnings.

2003-12-02  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo (How Can I Reset the Parser): More about start
        conditions.
        From Bruno Haible.

2003-11-18  Alexandre Duret-Lutz  <adl@gnu.org>

        * doc/bison.texinfo (Bison Options): Escape `@' in `$@'.

2003-10-07  Paul Eggert  <eggert@twinsun.com>

        * tests/Makefile.am (clean-local): Don't run 'testsuite --clean'
        if testsuite doesn't exist.

        * doc/bison.texinfo (Symbols): NUL bytes are not allowed in string
        literals, unfortunately.
        * src/scan-gram.l (<SC_ESCAPED_STRING,SC_ESCAPED_CHARACTER>):
        Complain about NUL bytes in character constants or string literals.

2003-10-05  Paul Eggert  <eggert@twinsun.com>

        * NEWS: Don't document %no-default-prec, as it's still
        too experimental.
        * doc/bison.texinfo: Document %no-default-prec only if
        the defaultprec flag is set.  Normally it's not.

2003-10-04  Paul Eggert  <eggert@twinsun.com>

        * data/glr.c (b4_rhs_value, b4_rhs_location): Yield a
        non-modifiable lvalue, instead of a modifiable one.
        * doc/bison.texinfo (Actions): Document that $$ can
        be assigned to.  Do not claim that $$ and $N are
        array element references: user code should not rely on this.

2003-10-01  Paul Eggert  <eggert@twinsun.com>

        * src/parse-gram.h (PERCENT_NO_DEFAULT_PREC): New token.
        (grammar_declaration): Use it.
        * src/scan-gram.l: New token %no-default-prec.
        * tests/conflicts.at: Revamp tests to use %no-default-prec.
        * NEWS, doc/bison.texinfo: Document the above.

2003-10-01  Akim Demaille  <akim@epita.fr>

        VCG no longer supports long_straight_phase.

        * src/vcg.c, src/vcg.h: Remove the handling of long_straight_phase.
        * src/print_graph.c (print_graph): Adjust.

2003-09-30  Frank Heckenbach  <frank@g-n-u.de>
        and Paul Eggert  <eggert@twinsun.com>

        * doc/bison.texinfo (Decl Summary, Contextual Precedence,
        Table of Symbols): Document %default-prec.
        * src/parse-gram.y (PERCENT_DEFAULT_PREC): New token.
        (grammar_declaration): Set default_prec on %default-prec.
        * src/scan-gram.l (%default-prec): New token.
        * src/reader.h (default_prec): New flag.
        * src/reader.c: Likewise.
        (packgram): Handle it.
        * tests/conflicts.at (%default-prec without %prec,
        %default-prec with %prec, %default-prec 1): New tests.

2003-09-30  Paul Eggert  <eggert@twinsun.com>

        * tests/testsuite.at: Include local.at, not input.at, fixing
        a typo in the 2003-08-25 patch.

2003-08-27  Akim Demaille  <akim@epita.fr>

        * data/lalr1.cc (yyparse) [__GNUC__]: "Use" yyerrorlab to pacify
        GCC warnings.

2003-08-26  Akim Demaille  <akim@epita.fr>

        * config/announce-gen (print_changelog_deltas): Neutralize "<#" as
        "<\#" to avoid magic from Gnus when posting parts of this script.

2003-08-26  Akim Demaille  <akim@epita.fr>

        * data/lalr1.cc (Parser::report_syntax_error_): New, extracted from
        (Parser::parse): here.
        Adjust: nerrs and errstatus is now replaced by...
        (Parser::nerrs_, Parser::errstatus_): New.

2003-08-25  Akim Demaille  <akim@epita.fr>

        * config/announce-gen, Makefile.cfg: New.
        * Makefile.am: Adjust.
        * GNUmakefile, Makefile.maint: Update from CVS Autoconf, but
        keeping local WGET and WGETFLAGS modifications from Paul Eggert.

2003-08-25  Akim Demaille  <akim@epita.fr>

        When reducing initial empty rules, Bison parser read an initial
        location that is not defined.  This results in garbage, and that
        affects Bison's own parser.  Therefore we need (i) to extend Bison
        to support a means to initialize this location, and (ii) to use
        this CVS Bison to fix CVS Bison's parser.

        * src/reader.h, reader.c (epilogue_augment): Remove, replace
        with...
        * src/muscle_tab.h, src/muscle_tab.c (muscle_code_grow): this.
        * src/parse-gram.y: Adjust.
        (%initial-action): New.
        (%error-verbose): Since we require CVS Bison, there is no reason
        not to use it.
        * src/scan-gram.l: Adjust.
        * src/Makefile.am (YACC): New, to make sure we use our own parser.
        * data/yacc.c (yyparse): Use b4_initial_action.

2003-08-25  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo: Don't promote stdout for error messages.

2003-08-25  Akim Demaille  <akim@epita.fr>

        * data/lalr1.cc (Parser::reduce_print_): Remove unused yyi.
        From Alexandre Duret-Lutz.

2003-08-25  Akim Demaille  <akim@epita.fr>

        Version 1.875c.

2003-08-25  Akim Demaille  <akim@epita.fr>

        * data/lalr1.cc (Parser::stack_print_, YY_STACK_PRINT): New.
        Use them.

2003-08-25  Akim Demaille  <akim@epita.fr>

        * data/lalr1.cc (Parser::reduce_print_): New.
        Use it.

2003-08-25  Akim Demaille  <akim@epita.fr>

        Have lalr1.cc catch with Paul Eggert's patch to fix the infinite
        error recovery loops.  This patch is based on
        <http://mail.gnu.org/archive/html/bison-patches/2003-06/msg00000.html>.
        Also, augment the similarity between lalr1.cc and yacc.c.
        Note: the locations of error recovery rules are not correct yet.

        * data/lalr1.cc: Comment changes to augment the similarity between
        lalr1.cc and yacc.c.
        (YYERROR): Goto to yyerrorlab, not yyerrlab1.
        (yyerrlab1): Remove, but where it used to be (now the bottom part of
        yyerrlab), when hitting EOF, pop the whole stack here instead of
        merely falling thru the default error handling mechanism.
        (yyerrorlab): New label, with the old contents of YYERROR,
        plus the following change: pop the stack of rhs corresponding
        to the production that invoked YYERROR.  That is how Yacc
        behaves (required by POSIX).
        * tests/calc.at (AT_CHECK_CALC_LALR1_CC): No longer expected to
        fail.

2003-08-25  Akim Demaille  <akim@epita.fr>

        Tune local.at so that people can "autom4te -l autotest calc.at -o
        calc" for instance, to extract a sub test suite.

        * tests/testsuite.at: Move the initialization, Autotest version
        requirement, and AT_TESTED invocation into...
        * tests/local.at: here.
        * tests/testsuite.at: Include it for compatibility with Autoconf
        2.57.
        * tests/Makefile.am ($(TESTSUITE)): Report that the warning should
        be ignore.

2003-08-04  Paul Eggert  <eggert@twinsun.com>

        Rework code slightly to avoid gcc -Wtraditional warnings.
        * data/glr.c (yyuserMerge): Return void, not YYSTYPE.
        The returned value is now stored in *YY0.  All callers changed.
        * src/output.c (merge_output): Adjust to the above change.

2003-07-26  Paul Eggert  <eggert@twinsun.com>

        * data/glr.c (YYASSERT): New macro.
        (yyfillin, yydoAction, yyglrReduce, yysplitStack,
        yyresolveStates, yyprocessOneStack):
        Use `YYASSERT (FOO);' rather than `if (! (FOO)) abort ();'.
        Derived from a suggestion by Frank Heckenbach.

2003-07-25  Paul Eggert  <eggert@twinsun.com>

        * data/glr.c (yyglrReduce): Don't use C89 string concatenation,
        for portability to K&R C (after ansi2knr, presumably).  See
        <http://mail.gnu.org/archive/html/bison-patches/2003-06/msg00041.html>
        by Frank Heckenbach, though I have omitted the structure-initialization
        part of his glr-knr.diff patch since I recall that the Portable
        C Compiler didn't require that change.

        Let the user specify how to allocate and free memory.
        Derived from a suggestion by Frank Heckenbach in
        <http://mail.gnu.org/archive/html/bison-patches/2003-06/msg00041.html>.
        * data/glr.c (YYFREE, YYMALLOC, YYREALLOC): New macros.
        All uses of free, malloc, realloc changed to use these macros,
        and unnecessary casts removed.
        * data/yacc.c (YYFREE, YYMALLOC): Likewise.

2003-07-06  Matthias Mann  <MatthiasMann@gmx.de>

        * data/lalr1.cc (operator<<(std::ostream&, const Position&)):
        use s.empty() rather than s == "" to test for empty string; see
        <http://mail.gnu.org/archive/html/bison-patches/2003-07/msg00003.html>
        (trivial change)

2003-06-25  Akim Demaille  <akim@epita.fr>

        * config/depcomp, config/install-sh: Update from masters.

2003-06-20  Paul Eggert  <eggert@twinsun.com>

        * data/glr.c (YYLLOC_DEFAULT): Parenthesize arguments as needed,
        and return properly parenthesized result.
        * data/lalar1.cc (YYLLOC_DEFAULT): Likewise.
        * data/yacc.c (YYLLOC_DEFAULT): Likewise.
        Remove unnecessary parentheses from uses.
        * doc/bison.texinfo (Location Default Action): Describe the
        conventions for parentheses.

2003-06-19  Paul Eggert  <eggert@twinsun.com>

        * data/glr.c (yyremoveDeletes, yy_reduce_print, yyglrReduce,
        yyreportTree): Do not assume that size_t is the same width as int,
        when printing sizes.  Print sizes using an unsigned format.
        Problem reported by Frank Heckenbach in
        <http://mail.gnu.org/archive/html/bison-patches/2003-06/msg00035.html>.

        Port to Forte Developer 7 C compiler.
        * data/glr.c (struct YYLTYPE): If locations are not being used,
        declare a single dummy member, as empty structs do not conform
        to the C standard.
        (YYERROR, YYBACKUP): Do not use "do { ...; return foo; } while (0)";
        the Forte Developer 7 C compiler complains that end-of-loop
        code is not reached.

2003-06-17  Paul Eggert  <eggert@twinsun.com>

        * lib/libiberty.h (PARAMS): Spell argument as Args, not as X, to
        avoid warnings from picky compilers about redefinition of PARAMS.

2003-06-17  Paul Eggert  <eggert@twinsun.com>

        Version 1.875b.

        * NEWS: Document 1.875b.

        * lib/bbitset.h: Do not include config.h; that's the includer's job.
        Do not include <sys/types.h>; shouldn't be needed on a C89 host.
        * lib/bitset.h (bitset_compatible_p): Indent as per GNU standard.
        Don't use 'index' in comments, as it's a builtin fn on some hosts.
        * lib/bitset_stats.c: Include gettext.h unconditionally, as
        per recent gettext manual's suggestion.
        * lib/ebitset.c (ebitset_resize, ebitset_unused_clear):
        Use prototypes, not old-style definitions.
        * lib/lbitset.c (lbitset_unused_clear): Likewise.
        * lib/vbitset.c (vbitset_resize, vbitset_ones, vbitset_zero,
        vbitset_empty_p, vbitset_copy1, vbitset_not, vbitset_equal_p,
        vbitset_subset_p, vbitset_disjoint_p, vbitset_and, vbitset_and_cmp,
        vbitset_andn, vbitset_andn_cmp, vbitset_or, vbitset_or_cmp,
        vbitset_xor, vbitset_xor_cmp, vbitset_and_or, vbitset_and_or_cmp,
        vbitset_andn_or, vbitset_andn_or_cmp, vbitset_or_and,
        vbitset_or_and_cmp, vbitset_copy): Likewise.

        * lib/libiberty.h: Do not include config.h; that's the includer's job.
        Do not include <stdlib.h>.
        (PARAMS): Define unconditionally for C89.
        (ATTRIBUTE_NORETURN): Remove.
        (ATTRIBUTE_UNUSED): Define unconditionally.

        Upgrade to 2003-06-08 libbitset, submitted by Michael Hayes in:
        <http://mail.gnu.org/archive/html/bison-patches/2003-06/msg00005.html>
        * lib/Makefile.am (bitsets_sources): Add vbitset.c, vbitset.h.
        * lib/vbitset.c, lib/vbitset.h: New files.
        * lib/abitset.c, lib/bbitset.h, lib/bitset.c, lib/bitset.h,
        lib/bitset_stats.c, lib/ebitset.c, lib/lbitset.c: Import
        from libbitset.

        * doc/bison.texinfo (How Can I Reset the Parser): Renamed from
        `How Can I Reset @code{yyparse}', since texinfo does not allow
        arbitrary @ in node names.

        * m4/Makefile.am (EXTRA_DIST): Add the following files, which
        shouldn't be needed according to the gettext 0.12.1 documentation
        but which seem to be needed anyway: codeset.m4 glibc21.m4
        intdiv0.m4 inttypes-pri.m4 inttypes.m4 inttypes_h.m4 isc-posix.m4
        lcmessage.m4 nls.m4 po.m4 stdint_h.m4 uintmax_t.m4 ulonglong.m4.
        * po/Makefile.in.in: Upgrade to gettext 0.12.1 version.

        * lib/.cvsignore: Add stdbool.h.
        * m4/.cvsignore: Add nls.m4, po.m4.

        Upgrade to CVS gnulib.
        * stdbool_.h: File renamed from stdbool.h.in.
        * configure.ac (AM_STDBOOL_H): Invoke this instead of
        AC_HEADER_STDBOOL.
        (AM_GNU_GETTEXT): Put brackets around args, as latest manual suggests.
        (AM_GNU_GETTEXT_VERSION): Update to 0.12.1.
        * lib/Makefile.am (EXTRA_DIST): Add stdbool_.h.
        (MOSTLYCLEANFILES): New var.
        ($(libbison_a_OBJECTS)): Depend on $(STDBOOL_H).
        (stdbool.h): New rule.
        * lib/dirname.c, lib/dirname.h, lib/hash.c, lib/hash.h,
        lib/malloc.c, lib/obstack.h, lib/quote.c, lib/realloc.c,
        lib/strcasecmp.c, lib/xalloc.h, m4/alloca.m4, m4/onceonly.m4,
        m4/quote.m4: Upgrade to today's gnulib.

        * tests/calc.at (AT_CHECK_CALC): New option EXPECTED-TO-FAIL.
        (AT_CHECK_CALC_LALR1_CC): Use it, since the C++ LALR parser fails
        the tests right now.
        * tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): Ensure yylex and
        yyerror are declared before use; C99 requires this.

2003-06-09  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>

        * data/glr.c (YYERROR): Update definition to reset yyerrState to 0
        first.
        (yyrecoverSyntaxError): Correct the logic for setting and testing
        yyerrState.
        Correct comment on handling EOF.
        Allow states with only a default reduction, rather than failing
        (I can't quite reconstruct why these were not allowed before).

        Fixes to avoid problem that $-N rules in GLR parsers can cause
        buffer overruns, corrupting state.

        * src/output.c (prepare_rules): Output max_left_semantic_context
        definition.
        * src/reader.h (max_left_semantic_context): New variable declaration.
        * src/scan-gram.l (max_left_semantic_context): Define.
        (handle_action_dollar): Update max_left_semantic_context.
        * data/glr.c (YYMAXLEFT): New definition.
        (yydoAction): Increase size of yyrhsVals by YYMAXLEFT.
        (yyresolveAction): Ditto.

        Fixes to problems with location handling in GLR parsers reported by
        Frank Heckenbach (2003/06/05).

        * data/glr.c (YYLTYPE): Make trivial if locations not used.
        (YYRHSLOC): Add parentheses, and define only if locations used.
        (YYLLOC_DEFAULT): Add parentheses, and give trivial definition if
        locations not used.
        (yyuserAction): Use YYLLOC_DEFAULT to set *yylocp.
        (yydoAction): Remove redundant initialization of *yyvalp and *yylocp.

        * tests/cxx-type.at: Exercise location information; update tests
        to differentiate output with and without locations.
        Remove forward declarations of yylex and yyerror---caused errors
        because default YYLTYPE not yet defined.
        Change semantic actions to compute strings, rather than printing
        them directly (to test proper passing of semantics values).  Change
        output to prefix notation and update test data and expected results.
        (yylex): Track locations.
        (stmtMerge): Return value rather than printing, and include arguments
        in value.

2003-06-03  Paul Eggert  <eggert@twinsun.com>

        Avoid warnings generated by GCC 2.95.4 when Bison is
        configured with --enable-gcc-warnings.
        * data/lalr1.cc (yy::]b4_parser_class_name[::parse,
        yy::]b4_parser_class_name[::translate_,
        yy::Stack::operator[] (unsigned),
        yy::Stack::operator[] (unsigned) const,
        yy::Slice::operator[] (unsigned),
        yy::Slice::operator[] (unsigned) const):
        Rename local vars to avoid warnings.
        * tests/glr-regression.at (Improper handling of embedded actions
        and $-N in GLR parsers): Remove unused local variable from yylex.
        * tests/regression.at (_AT_DATA_DANCER_Y): Declare yylex to take
        (void) as arg when not pure, since we now assume C89 when building
        Bison.  Pacify GCC by using parameter.

2003-06-02  Paul Eggert  <eggert@twinsun.com>

        * data/lalr1.cc (yy::Position::lines, yy::Position::columns,
        yy::Location::lines, yy::Location::columns): Rename arguments
        to avoid shadowing; this removes a warning generated by GCC 3.3.

2003-06-01  Paul Eggert  <eggert@twinsun.com>

        Don't pass C-only warning optins (e.g., -Wmissing-declarations)
        to g++, as GCC 3.3 complains if you do it.
        * configure.ac (WARNING_CXXFLAGS): New subst.  Set it to
        everything that WARNING_CFLAGS has, except omit warnings
        not suitable for C++.
        (AC_PROG_CXX): Use this instead of AC_CHECK_PROGS([CXX], [g++]).
        * tests/atlocal.in (CXXFLAGS): New var.
        * tests/local.at (AT_COMPILE_CXX): Use it instead of CFLAGS.

        Fix a GLR parser bug I reported in February; see
        <http://mail.gnu.org/archive/html/bison-patches/2003-02/msg00008.html>.
        The problem was that GLR parsers did not conform to the C standard,
        because actions like { $1 = $2 + $3; } expanded to expressions
        that invoked YYFILL in separate subexpressions, and YYFILL assigned
        to a local variable.  The C standard says that expressions
        like (var = f ()) + (var = f ()) have undefined behavior.
        Another problem was that GCC sometimes issues warnings that
        yyfill and its parameters are unused.

        * data/glr.c (yyfillin): Renamed from the old yyfill.  Mark
        as possibly unused.
        (yyfill): New function.
        (YYFILL): Use it.
        (yyuserAction): Change type of yynormal to bool, so that it matches
        the new yyfill signature.  Mark it as possibly unused.


        Follow up on a bug I reported in February, where a Bison-generated
        parser can loop.  Provide a test case and a fix for yacc.c.  I
        don't have a fix for lalr1.cc or for glr.c, unfortunately.
        The original bug report is in:
        <http://mail.gnu.org/archive/html/bison-patches/2003-02/msg00044.html>

        * data/yacc.c (YYERROR): Now just 'goto yyerrorlab', since the
        macro's size was becoming unwieldy.
        (yyerrlab): Do not discard an empty lookahead symbol, as this
        might destroy garbage.
        (yyerrorlab): New label, with the old contents of YYERROR,
        plus the following change: pop the stack of rhs corresponding
        to the production that invoked YYERROR.  That is how Yacc
        behaves, and POSIX requires this behavior.
        (yyerrlab1): Use YYPOPSTACK instead of its definiens.
        * tests/calc.at (_AT_DATA_CALC_Y): Include unistd.h if available.
        Define 'alarm' to do nothing if unistd.h is not available.
        Add a new rule "exp: '-' error;" to test the above change to
        data/yacc.c.  Use 'alarm' to abort any test taking longer than
        10 seconds, as it's probably looping.
        (AT_CHECK_CALC): Test recovery from error in new grammar rule.
        Also, the new yacc.c generates two fewer diagnostics for an
        existing test.

2003-05-24  Paul Eggert  <eggert@twinsun.com>

        * data/glr.c (YYSTACKEXPANDABLE): Do not evaluate
        YYSTYPE_IS_TRIVIAL or YYSTYPE_IS_TRIVIAL unless they are defined.
        This fixes a problem reported by John Bowman when the Compaq/HP
        Alpha cxx compiler happy (e.g. using cxx -D__USE_STD_IOSTREAM
        -ansi -Wall -gall).
        * data/yacc.c (union yyalloc): Likewise.
        (YYCOPY): Do not evaluate __GNUC__ unless it is defined.

        Switch from 'int' to 'bool' where that makes sense.

        * lib/abitset.c (abitset_test, abitset_empty_p, abitset_equal_p,
        abitset_subset_p, abitset_disjoint_p, abitset_and_cmp,
        abitset_andn_cmp, abitset_or_cmp, abitset_xor_cmp, abitset_and_or,
        abitset_and_or_cmp, abitset_andn_or_cmp, abitset_or_and_cmp):
        Return or accept bool, not int.  All callers changed.
        * lib/bbitset.h: (bitset_toggle_, bitset_copy_, bitset_and_or_cmp_,
        bitset_andn_or_cmp_, bitset_or_and_cmp_): Likewise.
        * lib/bitset.c (bitset_only_set_p, bitset_print, bitset_toggle_,
        bitset_copy_, bitset_op4_cmp, bitset_and_or_cmp_, bitset_andn_or_cmp_,
        bitset_or_and_cmp_): Likewise.
        * lib/bitset.h (bitset_test, bitset_only_set_p): Likewise.
        * lib/bitset_stats.c (bitset_stats_print, bitset_stats_toggle,
        bitset_stats_test, bitset_stats_empty_p, bitset_stats_disjoint_p,
        bitset_stats_equal_p, bitset_stats_subset_p, bitset_stats_and_cmp,
        bitset_stats_andn_cmp, bitset_stats_or_cmp, bitset_stats_xor_cmp,
        bitset_stats_and_or_cmp, bitset_stats_andn_or_cmp,
        bitset_stats_or_and_cmp): Likewise.
        * lib/ebitset.c (ebitset_elt_zero_p, ebitset_equal_p, ebitset_copy_cmp,
        ebitset_test, ebitset_empty_p, ebitset_subset_p, ebitset_disjoint_p,
        ebitset_op3_cmp, ebitset_and_cmp, ebitset_andn_cmp, ebitset_or_cmp,
        ebitset_xor_cmp): Likewise.
        * lib/lbitset.c (lbitset_elt_zero_p, lbitset_equal_p, lbitset_copy_cmp,
        lbitset_test, lbitset_empty_p, lbitset_subset_p, lbitset_disjoint_p,
        lbitset_op3_cmp, lbitset_and_cmp, lbitset_andn_cmp, lbitset_or_cmp,
        lbitset_xor_cmp): Likewise.
        * lib/bbitset.h: Include <stdbool.h>.
        (struct bitset_vtable): The following members now return bool, not
        int: toggle, test, empty_p, disjoint_p, equal_p, subset_p,
        and_cmp, andn_cmp, or_cmp, xor_cmp, and_or_cmp, andn_or_cmp,
        or_and_cmp).
        * src/conflicts.c (count_rr_conflicts): Likewise.
        * lib/bitset_stats.h (bitset_stats_enabled): Now bool, not int.
        All uses changed.
        * lib/ebitset.c (ebitset_obstack_init): Likewise.
        * lib/lbitset.c (lbitset_obstack_init): Likewise.
        * src/getargs.c (debug_flag, defines_flag, locations_flag,
        no_lines_flag, no_parser_flag, token_table_flag, yacc_flag,
        graph_flag): Likewise.
        * src/getargs.h (debug_flag, defines_flag, locations_flag,
        no_lines_flag, no_parser_flag, token_table_flag, yacc_flag,
        graph_flag): Likewise.
        * src/output.c (error_verbose): Likewise.
        * src/output.h (error_verbose): Likewise.
        * src/reader.c (start_flag, typed): Likewise.
        * src/reader.h (typed): Likewise.
        * src/getargs.c (LOCATIONS_OPTION): New constant.
        (long_options, getargs): Use it.
        * src/lalr.c (build_relations): Use bool, not int.
        * src/nullable.c (nullable_compute): Likewise.
        * src/print.c (print_reductions): Likewise.
        * src/tables.c (action_row, pack_vector): Likewise.
        * src/muscle_tab.h (MUSCLE_INSERT_BOOL): New macro.
        * src/output.c (prepare): Use it.
        * src/output.c (token_definitions_output,
        symbol_destructors_output, symbol_destructors_output): Use string,
        not boolean integer, to keep track of whether to output separator.
        * src/print_graph.c (print_core): Likewise.
        * src/state.c (state_rule_lookaheads_print): Likewise.

        * config/install-sh: Sync from automake 1.7.5.

2003-05-14  Paul Eggert  <eggert@twinsun.com>

        * src/parse-gram.y (rules_or_grammar_declaration): Require a
        semicolon after a grammar declaration, in the interest of possible
        future changes to the Bison input language.
        Do not allow a stray semicolon at the start of the grammar.
        (rhses.1): Allow one or more semicolons after any rule, including
        just before "|" as required by POSIX.
        * tests/input.at (Torturing the Scanner): Add tests for ";|" in a
        grammar.

2003-05-14  Alexandre Duret-Lutz  <adl@gnu.org>

        %parse-param support for lalr1.cc.

        * data/lalr1.cc (b4_parse_param_decl, b4_parse_param_cons,
        b4_cc_constructor_calls, b4_cc_constructor_call,
        b4_parse_param_vars, b4_cc_var_decls, b4_cc_var_decl): New m4
        definitions.
        (yy::b4_parser_class_name::b4_parser_class_name): Take extra
        parse-param arguments.
        (yy::b4_parser_class_name): Declare instance variables to
        hold parse-param arguments.
        * tests/calc.at: s/value/semantic_value/ because value clashes
        with a member of yy::b4_parser_class_name.  Adjust C++ code
        to handle %parse-param.  Enable %parse-param test in C++.

2003-05-12  Paul Eggert  <eggert@twinsun.com>

        * doc/bison.texinfo (How Can I Reset @code{yyparse}): Reword the
        English a bit.  Fix fclose typo.  Change "const char" to "char
        const", and use ANSI C rather than K&R for "main".  Suggest
        YY_FLUSH_BUFFER over yyrestart (as that is what Flex recommends)
        and suggest yy_switch_to_buffer.

2003-05-05  Paul Eggert  <eggert@twinsun.com>

        * lib/bitset.h (__INT_TO_PTR): Define to a value that presumes
        C89.  This avoids a diagnostic on compilers that define __STDC__
        to 0, fixing a problem with Tru64 cc reported by Martin Mokrejs in
        <http://mail.gnu.org/archive/html/bug-bison/2003-04/msg00041.html>.

2003-05-03  Paul Eggert  <eggert@twinsun.com>

        * lib/bitset.h (BITSET_FOR_EACH, BITSET_FOR_EACH_REVERSE):
        Do not overrun array bounds.
        This should fix a bug reported today by Olatunji Oluwabukunmi in
        <http://mail.gnu.org/archive/html/bug-bison/2003-05/msg00004.html>.

2003-04-29  Akim Demaille  <akim@epita.fr>

        * src/gram.h, src/gram.c (pure_parser, glr_parser): Move to...
        * src/getargs.c, src/getargs.h: here, as bool, not int.
        (nondeterministic_parser): New.
        * src/parse-gram.y, src/scan-gram.l: Support
        %nondeterministic-parser.
        * src/output.c (prepare): Use nondeterministic_parser instead
        of glr_parser where appropriate.
        * src/tables.c (conflict_row, action_row, save_row)
        (token_actions, token_actions, pack_vector): Ditto.

2003-04-29  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo (C++ Parsers, Implementing Loops): New.

2003-04-29  Akim Demaille  <akim@epita.fr>

        * tests/calc.at: Also test yacc.c and glr.c (but not lalr1.cc yet)
        with %pure-parser and %locations to exercise the patch from Yakov
        Markovitch below.

2003-04-28  Tim Van Holder <tim.van.holder@pandora.be>

        * data/yacc.c: (b4_lex_param): Corrected for the case where
        %lex-param is provided and %pure-parser isn't.

2003-04-27  Paul Eggert  <eggert@twinsun.com>

        Avoid gcc -Wundef warnings reported by Gerald Pfeifer in
        <http://mail.gnu.org/archive/html/bug-bison/2003-04/msg00044.html>.
        * data/yacc.c (YYSTACK_ALLOC): Don't evaluate YYSTACK_USE_ALLOCA
        if it is not defined.
        (YYMAXDEPTH): Don't evaluate YYMAXDEPTH if it is not defined.

2003-04-26  Paul Eggert  <eggert@twinsun.com>

        * data/lalr1.cc (yy::Parser::pact_ninf_, yy::Parser::table_ninf_):
        Declare to be of type suitable for the ninf value itself, not of
        type suitable for the corresponding table, since the latter might
        be unsigned but the ninf value might be negative.  This fixes a
        bug reported by Alexandre Duret-Lutz in
        <http://mail.gnu.org/archive/html/bug-bison/2003-04/msg00017.html>.

        * configure.ac (AC_FUNC_ERROR_AT_LINE): Remove, since gl_ERROR
        invokes it.  We shouldn't invoke it twice because it will attempt
        to put error.o in the archive twice.  This fixes a glitch reported
        by Martin Mokrejs in
        <http://mail.gnu.org/archive/html/bug-bison/2003-04/msg00041.html>.

2003-04-21  Paul Eggert  <eggert@twinsun.com>

        * m4/error.m4: Update from Bruno Haible's 2003-04-14 patch
        to gnulib.

2003-04-21  Yakov Markovitch <Markovitch@iso.ru>

        * data/glr.c (yyexpandGLRStack) [!YYSTACKEXPANDABLE]:
        Fix obvious typo that results in uncompilable GLR parsers
        when both %pure-parser and %locations are used.  (trivial change)

2003-04-17  Paul Eggert  <eggert@twinsun.com>

        * src/scan-gram.l: Add %option nounput, since we no longer use unput.
        (unexpected_eof): Renamed from unexpected_end_of_file, for brevity.
        Do not insert the expected token via unput, as this runs afoul
        of a POSIX-compatibility bug in flex 2.5.31.
        All uses changed to BEGIN the parent state,
        since we no longer insert the expected token via unput.
        * tests/regression.at (Invalid inputs): Remove cascaded diagnostic
        that is no longer emitted after the above change.

        * src/conflicts.c (set_conflicts): Resolve all conflicts, not just
        the first one.  This change is from Paul Hilfinger, and it fixes
        regression reported by Werner Lemberg in
        <http://mail.gnu.org/archive/html/bug-bison/2003-04/msg00026.html>.

        (resolve_sr_conflict): Don't invoke state_errs_set
        unless one or more tokens have been explicitly made errors.
        Otherwise, the above change causes Bison to abort.

        * tests/existing.at (GNU pic Grammar): New test case, taken from
        Lemberg's email.

2003-03-31  Akim Demaille  <akim@epita.fr>

        * doc/Makefile.am (AM_MAKEINFOFLAGS): Don't split the info file.

2003-03-31  Akim Demaille  <akim@epita.fr>

        * src/output.c (prepare_symbols): Avoid trailing spaces in the
        output.

2003-03-31  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo (Strings are Destroyed): s/losses/loses/.
        From Paul Hilfinger.

2003-03-29  Akim Demaille  <akim@epita.fr>

        * m4/error.m4: Do not put under dynamic conditions some code which
        expansion is under static control.

2003-03-29  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo (How Can I Reset @code{yyparse}): New.

2003-03-29  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo (Strings are Destroyed): New.

2003-03-13  Paul Eggert  <eggert@twinsun.com>

        * .cvsignore: Add configure.lineno.
        * src/.cvsignore: Add yacc.
        * tests/.cvsignore: Add testsuite.log.
        * doc/fdl.texi: Sync with latest FSF version.

2003-03-12  Paul Eggert  <eggert@twinsun.com>

        * scan-gram.l (YY_USER_INIT): Initialize code_start, too.
        (<INITIAL><<EOF>>, <SC_PRE_CODE><<EOF>>): Set *loc to the scanner
        cursor, instead of leaving it undefined.  This fixes a bug
        reported by Tim Van Holder in
        <http://mail.gnu.org/archive/html/bug-bison/2003-03/msg00023.html>.
        * tests/input.at (Torturing the Scanner): Test the scanner on
        an empty input file, which was Tim Van Holder's test case.

        * m4/timevar.m4 (BISON_PREREQ_TIMEVAR): When checking whether
        <sys/resource.h> can be included, include sys/time.h and
        sys/times.h first, if available.  This works around the SunOS
        4.1.4 porting bug reported by Bruce Becker in
        <http://mail.gnu.org/archive/html/bug-bison/2003-03/msg00018.html>.

        * m4/subpipe.m4 (BISON_PREREQ_SUBPIPE): Don't
        AC_CHECK_HEADERS([sys/wait.h]), as this interferes with
        AC_HEADER_SYS_WAIT.

        Merge changes from gnulib.  This was prompted because the CVS
        snapshot didn't build on Solaris 7 due to strnlen problems.

        These changes need to be merged back into gnulib:
        * lib/hash.c: Include <stdbool.h> unconditionally.
        * m4/onceonly.m4 (m4_quote): New macro.
        (AC_CHECK_HEADERS_ONCE, AC_CHECK_FUNCS_ONCE, AC_CHECK_DECLS_ONCE):
        Quote AC_FOREACH variable-expansions properly.
        The 2003-01-03 obstack.h change also needs merging.
        {end of changes requiring merging}

        * lib/stdbool.h.in, m4/alloca.m4, m4/dirname.m4, m4/dos.m4,
        m4/getopt.m4, m4/hash.m4, m4/malloc.m4, m4/memchr.m4,
        m4/memrchr.m4, m4/obstack.m4, m4/onceonly.m4, m4/quote.m4,
        m4/quotearg.m4, m4/realloc.m4, m4/stpcpy.m4, m4/strnlen.m4,
        m4/strtol.m4, m4/strtoul.m4, m4/unlocked-io.m4, m4/xalloc.m4:
        New files, imported from gnulib.
        * m4/Makefile.am (EXTRA_DIST): Add the new m4/*.m4 files mentioned
        above.

        * lib/mbswidth.c, m4/error.m4, m4/mbrtowc.m4, m4/mbswidth.m4,
        m4/memcmp.m4, m4/prereq.m4, m4/stdbool.m4: Update to current
        gnulib sources.

        * configure.ac (gl_DIRNAME, gl_GETOPT, gl_HASH, gl_QUOTE, gl_XALLOC):
        Add.
        (gl_ERROR): New, replacing jm_PREREQ_ERROR.
        (gl_FUNC_ALLOCA): New, replacing AC_FUNC_ALLOCA.
        (gl_FUNC_STPCPY): New, replacing AC_REPLACE_FUNCS(stpcpy).
        (gl_FUNC_STRNLEN): New, replacing AC_FUNC_STRNLEN.
        (gl_MBSWIDTH): New, replacing jm_PREREQ_MBSWIDTH.
        (gl_OBSTACK): New, replacing AC_FUNC_OBSTACK.
        (gl_QUOTEARG): New, replacing jm_PREREQ_QUOTEARG.
        (jm_FUNC_GLIBC_UNLOCKED_IO, gl_FUNC_STPCPY, gl_FUNC_STRTOL): New.
        (jm_FUNC_MALLOC): New, replacing AC_FUNC_MALLOC.
        (jm_FUNC_REALLOC): New, replacing AC_FUNC_REALLOC.
        (jm_PREREQ_ARGMATCH): Remove.
        (AC_REPLACE_FUNCS): Remove memchr, memrchr, stpcpy, strtol, strtoul.
        * lib/Makefile.am (libbison_a_SOURCES): Add argmatch.c, argmatch.h.

        * src/system.h: Include <stdbool.h> unconditionally.

        * lib/bbitset.h: Include <limits.h> unconditionally.  We have been
        assuming at least C89 in the bitset code for some time now.

2003-03-03  Akim Demaille  <akim@epita.fr>

        * ro.po: New.

2003-03-02  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo (Table of Symbols): Reactivate the
        documentation for %lex-param, and %parse-param.

2003-03-02  Akim Demaille  <akim@epita.fr>

        * data/yacc.c, data/glr.c, data/lal1.cc: Use similar code to
        generate verbose error messages.
        Use the number of tokens as an upper bound in yytname, as it
        cannot be a non terminal.

2003-03-02  Akim Demaille  <akim@epita.fr>

        * tests/regression.at (_AT_DATA_DANCER_Y): Fix the expected error
        message.

2003-03-02  Akim Demaille  <akim@epita.fr>

        * tests/regression.at (_AT_DATA_DANCER_Y, AT_CHECK_DANCER): New.
        Use them to exercise yycheck overrun.
        Based on Andrew Suffield's grammar.

2003-03-02  Akim Demaille  <akim@epita.fr>

        Create tests/local.at for Bison generic testing macros.

        * tests/calc.at (AT_CHECK_PUSHDEFS, AT_CHECK_POPDEFS): Move to...
        * tests/local.at (AT_BISON_OPTION_PUSHDEFS, AT_BISON_OPTION_POPDEFS):
        This new file.
        * tests/calc.at (AT_CHECK_CALC): Adjust.
        * tests/testsuite.at (AT_DATA_GRAMMAR_PROLOGUE, AT_DATA_GRAMMAR)
        (AT_COMPILE, AT_COMPILE_CXX, AT_PARSER_CHECK): Move to...
        * tests/local.at: here.
        (AT_COMPILE_CXX): Tags the tests using it as c++.
        Ignore the test if CXX is not functional.

2003-03-01  Paul Eggert  <eggert@twinsun.com>

        * src/scan-gram.l (code_start): Initialize it to scanner_cursor,
        not loc->end, since loc->end might contain garbage and this leads
        to undefined behavior on some platforms.
        (id_loc, token_start): Use (IF_LINTed) initial values that do not
        depend on *loc, so that the reader doesn't give the the false
        impression that *loc is initialized.
        (<INITIAL>"%%"): Do not bother setting code_start, since its value
        does not survive the return.

2003-03-01  Akim Demaille  <akim@epita.fr>

        * src/scan-gram.l (code_start): Always initialize it when entering
        into yylex, as SC_EPILOGUE is activated *before* the corresponding
        yylex invocation.  An alternative would be making it static, but
        then it starts with the second %%'s beginning, instead of its end.

2003-02-28  Paul Eggert  <eggert@twinsun.com>

        * lib/mbswidth.c: Include <wchar.h> before "mbswidth.h", to work
        around a UnixWare 7.1.1 porting bug reported by John Hughes in
        <http://mail.gnu.org/archive/html/bug-bison/2003-02/msg00030.html>.

2003-02-26  Paul Eggert  <eggert@twinsun.com>

        * README: Mention compiler bug in Sun Forte Developer 6 update 2.
        Remove Sequent/Pyramid discussion (nobody uses them any more).
        Merge VMS and MS-DOS discussion; these ports may well be dead
        but let's keep mentioning them for now.  Put <> around email
        addresses.  Add copyright notice.

2003-02-24  Paul Eggert  <eggert@twinsun.com>

        * data/glr.c (yy_reduce_print): yylineno -> yylno,
        to avoid collision with flex use of yylineno.
        Problem reported by Bruce Lilly in
        <http://mail.gnu.org/archive/html/bug-bison/2003-02/msg00016.html>.
        * data/lalr1.cc (yy::]b4_parser_class_name[::parse): Likewise.
        * data/yacc.c (yy_reduce_print): Likewise.

        * config/depcomp: Sync with Automake 1.7.3.

2003-02-21  Akim Demaille  <akim@epita.fr>

        * data/lalr1.cc: Use temporary variables instead of casts to
        change integer types.
        Suggested by Paul Eggert.

2003-02-21  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo: Use "location" consistently to refer to @n,
        to avoid confusions with lalr1.cc's notion of Position.
        Suggested by Paul Eggert.

2003-02-20  Akim Demaille  <akim@epita.fr>

        * data/lalr1.cc (position.hh): Make sure "columns" never pushes
        before initial_columns.
        (location.hh): Use consistent variable names when defining the
        operator<<.
        Use "last" so that we subtract from Positions, not from unsigned.

2003-02-20  Akim Demaille  <akim@epita.fr>

        * data/lalr1.cc (position.hh): New subfile, including the extended
        and Doxygen'ed documentation of class Position.
        (location.hh): Use it.
        Document a` la Doxygen.
        With the help of Benoit Perrot.

2003-02-20  Akim Demaille  <akim@epita.fr>

        * tests/calc.at (AT_CHECK_PUSHDEFS, AT_CHECK_POPDEFS): Define
        AT_YACC_IF.
        Redefine AT_YYERROR_SEES_LOC_IF using it.
        (_AT_DATA_CALC_Y): Don't declare yyerror when lalr1.cc, as it is
        not defined.
        Don't use the location in yy::Parser::error_ and
        yy::Parser::print_ when not %locations.
        Activate more lalr1.cc tests.

2003-02-19  Akim Demaille  <akim@epita.fr>

        * data/lalr1.cc: When displaying a line number, be sure to make it
        an int.

2003-02-19  Akim Demaille  <akim@epita.fr>

        * data/lalr1.cc (b4_stack_depth_init, yy::Parser::initdepth_):
        Remove, useless.
        (YYABORT, YYACCEPT, YYERROR): New.
        * tests/calc.at: Renable the lalr1.cc test.

2003-02-19  Akim Demaille  <akim@epita.fr>

        * tests/calc.at (AT_CHECK_CALC): Check different scenarios of
        error recovery, mixing with/without pops and discarding of the
        lookahead.
        Exercise YYERROR.
        Disable the lalr1.cc tests as currently it doesn't support YYERROR.

2003-02-17  Paul Eggert  <eggert@twinsun.com>

        * tests/atlocal.in (LDFLAGS, LIBS): New vars.
        * tests/testsuite.at (AT_COMPILE): Use them.
        This fixes the testsuite problem reported by Robert Lentz in
        <http://mail.gnu.org/archive/html/bug-bison/2003-02/msg00011.html>.

2003-02-12  Paul Eggert  <eggert@twinsun.com>

        * data/yacc.c (yyerrlab) [YYERROR_VERBOSE]:
        Avoid subscript error in yycheck.  Bug reported by Andrew Suffield in
        <http://mail.gnu.org/archive/html/bug-bison/2003-02/msg00003.html>.
        * data/glr.c (yyreportSyntaxError) [YYERROR_VERBOSE]: Likewise.
        Check for malloc failure, for consistency with yacc.c.
        (yytname_size): Remove, for consistency with yacc.c.

        The bug still remains in data/lalr1.cc, as I didn't have time
        to fix it there.

2003-02-06  Akim Demaille  <akim@epita.fr>

        * configure.ac (GXX): Rename as...
        (CXX): this, to keep the original Autoconf semantics.
        Require 2.57.
        * data/lalr1.cc: Fix b4_copyright invocations.
        If YYDEBUG is not defined, don't depend upon name_ being defined.
        (location.hh): Include string and iostream.
        (Position::filename): New member.
        (Position::Position ()): New.
        (operator<< (Position)): New.
        (operator- (Position, int)): New.
        (Location::first, Location::last): Rename as...
        (Location::begin, Location::end): these, to mock the conventional
        iterator names.
        (operator<< (Location)): New.
        * tests/atlocal.in (CXX): New.
        * tests/testsuite.at (AT_COMPILE_CXX): New.
        * tests/calc.at (_AT_DATA_CALC_Y): Adjust yyerror to report the
        locations in a more synthetic way.
        (AT_CHECK_PUSHDEFS): AT_YYERROR_SEES_LOC_IF is positive if
        lalr1.cc is used.
        Adjust the C locations to match those from Emacs: first column is
        column 0.
        Change all the expected results.
        Conform to the GCS: simplify the locations when applicable.
        (LOC, VAL, YYLLOC_FORMAL, YYLLOC_ARG, USE_YYLLOC, LEX_FORMALS)
        (LEX_ARGS, USE_LEX_ARGS, LEX_PRE_FORMALS, LEX_PRE_ARGS): Replace
        these CPP macros with the m4 macros new defined by...
        (AT_CHECK_PUSHDEFS): this, i.e.:
        (AT_LALR1_CC_IF, AT_PURE_LEX_IF, AT_LOC, AT_VAL, AT_LEX_FORMALS)
        (AT_LEX_ARGS, AT_USE_LEX_ARGS, AT_LEX_PRE_FORMALS, AT_LEX_PRE_ARGS)
        New macros.
        (AT_CHECK_POPDEFS): Undefine them.
        (AT_CHECK_CALC_LALR1_CC): New.
        Use it for the first lalr1.cc test.

2003-02-04  Akim Demaille  <akim@epita.fr>

        * data/lalr1.cc (YYLLOC_DEFAULT): Fix its definition: be based on
        Location as is defined.

2003-02-04  Akim Demaille  <akim@epita.fr>

        * data/lalr1.cc: If YYDEBUG is not defined, don't depend upon
        name_ being defined.

2003-02-03  Paul Eggert  <eggert@twinsun.com>

        * src/gram.h (start_symbol): Remove unused decl.

        Use more-consistent naming conventions for local vars.

        * src/derives.c (derives_compute): Change type of local var from
        int to rule_number.
        * src/gram.c (grammar_rules_partial_print): Likewise.
        * src/print.c (print_core): Likewise.
        * src/reduce.c (reduce_grammar_tables): Likewise.

        * src/gram.c (grammar_dump): Change name of item_number *
        local var from r to rp.
        * src/nullable.c (nullable_compute): Likewise.

        * src/gram.h (ISTOKEN, ISVAR): Use i, not s, for int var.

        * src/gram.h (symbol_number_as_item_number): Use sym, not s,
        for symbol or symbol_number var.
        * src/reader.c (grammar_start_symbol_set): Likewise.
        * src/reader.h (grammar_start_symbol_set, grammar_symbol_append):
        Likewise.
        * src/state.c (transitions_to): Likewise.
        * src/state.h: Likewise.
        * src/tables.c (symbol_number_to_vector_number): Likewise.

        * src/muscle_tab.h (MUSCLE_OBSTACK_SGROW): Use p, not s, for
        char * var.

        * src/parse-gram.y (lloc_default): Use loc, not r, for YYLTYPE
        var.

        * src/scan-gram.l (no_cr_read): Use bytes_read, not s, for size
        var.

        * src/system.h (xstrndup, strchr, strspn, strnlen, memchr, memrchr):
        Use str, not s, for char * var.  Use ch, not c, for character var.
        Use size for size var.

        * src/uniqstr.c (uniqstr_new, uniqstr_assert): Use str, not s, for
        char * var.
        (uniqstr_print, uniqst_print_processor): Use ustr, not s, for
        uniqstr var.
        * src/uniqstr.h: Likewise.

        * src/vcg.c (get_color_str, get_textmode_str, get_shape_str,
        get_layoutalgorithm_str, get_decision_str, get_orientation_str,
        get_node_alignment_str, get_arrow_mode_str, get_crossing_type_str,
        get_view_str, get_linestyle_str, get_arrowstyle_str): Rename
        param to have same name as that of enum, so that we don't use
        "s" to stand for a non-state.

2003-02-02  Akim Demaille  <akim@epita.fr>

        * src/scan-skel.l: Scan more than one inert character per yylex
        invocation.

2003-02-01  Paul Eggert  <eggert@twinsun.com>

        Version 1.875a.

        * po/LINGUAS: Add ms.

2003-01-30  Akim Demaille  <akim@epita.fr>

        * doc/Makefile.am (CLEANFILES): Add bison.fns for distcheck.

2003-01-29  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>

        * tests/cxx-type.at: Correct apparent typo in Bison input: $$ instead
        of $1.

        Changes in response to error report by S. Eken: GLR mode does not
        handle negative $ indices or $ indices in embedded rules correctly.
        See <http://mail.gnu.org/archive/html/bug-bison/2003-01/msg00076.html>.

        * data/glr.c (b4_rhs_value): Change to use YYFILL macro.
        (b4_rhs_location): Ditto.
        (yyfill): New function to copy from stack tree into array
        incrementally.
        (yyuserAction): Modify to allow incremental move of semantic values
        to rhs array when in GLR mode.
        Define YYFILL to use in user-defined actions to fill semantic array
        as needed.
        Remove dummy use of yystack, as there is now a guaranteed use.
        (yydoAction): Modify to allow incremental move of semantic values
        to rhs array when in GLR mode.
        (yyresolveAction): Ditto.
        (yyglrShiftDefer): Update comment.
        (yyresolveStates): Use X == NULL for pointers, not !X.
        (yyglrReduce): Ditto.
        (yydoAction): Ditto

        * tests/glr-regr1.at: Rename to ...
        * tests/glr-regression.at: Add new regression test for the problems
        described above (adapted from S. Eken).
        Update copyright notice.
        * tests/testsuite.at: Rename glr-regr1.at to glr-regression.at.
        * tests/Makefile.am: Ditto.

2003-01-28  Paul Eggert  <eggert@twinsun.com>

        * data/lalr1.cc: Do not use @output_header_name@ unless
        b4_defines_flag is set.  This fixes two bugs reported by
        Tim Van Holder in
        <http://mail.gnu.org/archive/html/bug-bison/2003-01/msg00071.html>
        and <http://mail.gnu.org/archive/html/bug-bison/2003-01/msg00073.html>.

2003-01-21  Paul Eggert  <eggert@twinsun.com>

        * data/yacc.c (YYERROR): Move code from yyerrlab1 to here, so that
        we don't need to worry about yyerrlab1 being reported as an
        "unused label" by non-GCC C compilers.  The downside is that if
        locations are used then a couple of statements are duplicated each
        time YYERROR is invoked, but the upside is that the warnings
        should vanish.
        (yyerrlab1): Move code to YERROR.
        (yyerrlab2): Remove.  Change uses back to yyerrlab1.
        This reverts some of the 2002-12-27 change.

2003-01-17  Paul Eggert  <eggert@twinsun.com>

        * src/output.c (symbol_printers_output): Fix typo that led
        to core dump.  Problem reported by Antonio Rus in
        <http://mail.gnu.org/archive/html/bug-bison/2003-01/msg00058.html>.

2003-01-13  Akim Demaille  <akim@epita.fr>,
                Quoc Peyrot <chojin@lrde.epita.fr>,
                Robert Anisko <anisko_r@lrde.epita.fr>

        * data/lalr1.cc (parse::yyerrlab1): When popping the stack, stop
        when the stacks contain one element, as the loop would otherwise
        free the last state, and then use the top state (the one we just
        popped).  This means that the initial elements will not be freed
        explicitly, as is the case in yacc.c; it is not a problem, as
        these elements have fake values.

2003-01-11  Paul Eggert  <eggert@twinsun.com>

        * NEWS: %expect-violations are now just warnings, reverting
        to Bison 1.30 and 1.75 behavior.  This fixes the GCC 3.2
        bootstrapping problem reported by Matthias Klose; see
        <http://mail.gnu.org/archive/html/bug-bison/2003-01/msg00053.html>.
        * src/conflicts.c (conflicts_print): Likewise.
        * tests/conflicts.at (%expect not enough, %expect too much,
        %expect with reduce conflicts): Likewise.
        * doc/bison.texinfo (Expect Decl): Document this.  Also mention
        that the warning is enabled if the number of conflicts changes
        (not necessarily increases).

        * src/getargs.c (version): Update copyright year.

2003-01-09  Akim Demaille  <akim@epita.fr>

        * src/Makefile.am, lib/Makefile.am: Use $(VAR) instead of @VAR@.

2003-01-08  Paul Eggert  <eggert@twinsun.com>

        * Makefile.maint (WGETFLAGS):
        New macro, containing "-C off" to disable proxy caches.
        All uses of $(WGET) changed to $(WGET) $(WGETFLAGS).
        (rel-check): Use $(WGET) instead of wget.

2003-01-06  Paul Eggert  <eggert@twinsun.com>

        * doc/bison.texinfo (Generalized LR Parsing): Add a reference to
        the GLR paper of Scott, Johnstone and Hussain.

2003-01-04  Paul Eggert  <eggert@twinsun.com>

        * configure.ac (AC_ARG_ENABLE): Add --disable-yacc.
        (YACC_SCRIPT, YACC_LIBRARY): New vars to AC_SUBST.
        * lib/Makefile.am (lib_LIBRARIES): liby.a -> @YACC_LIBRARY@.
        (EXTRA_LIBRARIES): New var, for liby.a.
        * src/Makefile.am (bin_SCRIPTS): yacc -> @YACC_SCRIPT@.
        (EXTRA_SCRIPTS): New var, for yacc.

        * data/yacc.c (yyerrlab1): Omit attribute if __cplusplus is defined,
        since GNU C++ (as of 3.2.1) does not allow attributes on labels.
        Problem reported by Nelson H. F. Beebe.

2003-01-03  Paul Eggert  <eggert@twinsun.com>

        * lib/obstack.h (__INT_TO_PTR) [__STDC__]: Cast result to
        (void *) to avoid diagnostic with native c89 on SGI IRIX 6.5
        when compiling Bison 1.875's `bitset bset = obstack_alloc
        (bobstack, bytes);'.  Problem reported by Nelson H. F. Beebe.

        * src/scan-skel.l (QPUTS): Omit redundant `;' from macro definition.
        ([^@\n]): Renamed from [^@\n]+ so that the token buffer does not
        grow to a huge size with typical invocation.

        * lib/hash.c (_Bool, bool, false, true, __bool_true_false_are_defined):
        Use the pattern recommended by Autoconf 2.57, except also protect
        against double-definition.
        * src/system.h: Likewise.
        Portability issues reported by Nelson H. F. Beebe.

        * data/glr.c (yybool): Renamed from bool, to avoid collisions in C.
        All uses changed.  Provide a definition in both C and C++.
        (yytrue, yyfalse): Define even if defined (__cplusplus).

        * lib/bitset_stats.c (bitset_stats_list): Remove unused var.
        Reported by Nelson H. F. Beebe.

        * src/scan-skel.l ("@oline@"): Output lineno+1, not lineno.

2003-01-02  Paul Eggert  <eggert@twinsun.com>

        * data/yacc.c (yyerrlab1): Append `;' after attribute, to
        pacify the buggy "smart preprocessor" in MacOS 10.2.3.
        Bug reported by Nelson H. F. Beebe.

2003-01-01  Paul Eggert  <eggert@twinsun.com>

        * Version 1.875.

2002-12-30  Paul Eggert  <eggert@twinsun.com>

        * src/scan-gram.l (<INITIAL,SC_AFTER_IDENTIFIER,SC_PRE_CODE>","):
        Moved here from...
        (<INITIAL>","): Here.  This causes stray "," to be treated
        more uniformly.

        * src/scan-gram.l (<SC_BRACED_CODE>"}"): Output ";" before the
        last brace in braced code when not in Yacc mode, for compatibility
        with Bison 1.35.  This resurrects the 2001-12-15 patch to
        src/reader.c.

        * src/reader.h (YYDECL): Use YYSTYPE, not its deprecated alias
        yystype.  This follows up the 2002-12-24 YYSTYPE bug fix.

2002-12-28  Paul Eggert  <eggert@twinsun.com>

        * src/symtab.c (symbol_make_alias): Set type of SYMVAL to be
        that of SYM's type.  This fixes Debian bug 168069, reported by
        Thomas Olsson.

2002-12-28  Paul Eggert  <eggert@twinsun.com>

        Version 1.75f.

        Switch back to the Yacc style of conflict reports, undoing some
        of the 2002-07-30 change.
        * doc/bison.texinfo (Understanding): Use Yacc style for
        conflict reports.  Also, use new way of locating rules.
        * src/conflicts.c (conflict_report):
        Renamed from conflict_report_yacc, removing the old
        'conflict_report'.  Translate the entire conflict report at once,
        so that we don't assume that "," has the same interpretation in
        all languages.
        (conflicts_output): Use Yacc-style conflict report for each state,
        instead of our more-complicated style.
        (conflicts_print): Use Yacc-style conflict report, except print
        the input file name when not emulating Yacc.
        * tests/conflicts.at (Unresolved SR Conflicts, Defaulted
        Conflicted Reduction, %expect not enough, %expect too much,
        %expect with reduce conflicts): Switch to Yacc-style conflict reports.
        * tests/existing.at (GNU Cim Grammar): Likewise.
        * tests/glr-regr1.at (Badly Collapsed GLR States): Likewise.

        * src/complain.c (warn_at, warn, complain_at, complain, fatal_at,
        fatal): Don't invoke fflush; it's not needed and it might even be
        harmful for stdout, as stdout might not be open.
        * src/reduce.c (reduce_print): Likewise.

2002-12-27  Paul Eggert  <eggert@twinsun.com>

        Fix a bug where error locations were not being recorded correctly.
        This problem was originally reported by Paul Hilfinger in
        <http://mail.gnu.org/archive/html/bug-bison/2002-11/msg00086.html>.

        * data/yacc.c (yyparse): New local var yylerrsp, to record the
        top of the location stack's error locations.
        (yyerrlab): Set it.  When discarding a token, push its location
        onto yylerrsp so that we don't lose track of the error's end.
        (yyerrlab1): Now is only the target of YYERROR, so that we can
        properly record the location of the action that failed.  For GCC
        2.93 and later, insert an __attribute__ ((__unused__)) to avoid
        GCC warning about yyerrlab1 being unused if YYERROR is unused.
        (yyerrlab2): New label, which yyerrlab now falls through to.
        Compute the error's location by applying YYLLOC_DEFAULT to
        the locations of all the symbols that went into the error.
        * doc/bison.texinfo (Location Default Action): Mention that
        YYLLOC_DEFAULT is also invoked for syntax errors.
        * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR):
        Error locations include the locations of all the tokens that were
        discarded, not just the last token.

2002-12-26  Paul Eggert  <eggert@twinsun.com>

        * src/files.c: Include quote.h.
        (compute_output_file_names): Warn if we detect conflicting
        outputs to the same file.  This should catch the misunderstanding
        exemplified by Debian Bug 165349, reported by Bruce Stephens..

        * src/conflicts.c (conflicts_print): If the user specifies
        "%expect N", report an error if there are any reduce/reduce
        conflicts.  This is what the manual says should happen.
        This fixes Debian bug 130890, reported by Anthony DeRobertis.
        * tests/conflicts.at (%expect with reduce conflicts): New test.

        Don't use m4_include on relative file names, as it doesn't work as
        desired if there happens to be a file with that name under ".".

        * m4sugar/version.m4: Remove; it was included but it wasn't used.
        * data/Makefile.am (dist_m4sugar_DATA): Remove m4sugar/version.m4.
        * data/m4sugar/m4sugar.m4: Don't include m4sugar/version.m4.
        * data/glr.c, data/lalr1.cc, data/yacc.c: Don't include c.m4.
        * src/output.c (output_skeleton): Use full path names when
        specifying a file to include; don't rely on include path, as
        it's unreliable when the working file contains a file with
        that name.

2002-12-25  Paul Eggert  <eggert@twinsun.com>

        Remove obsolete references to bison.simple and bison.hairy.
        Problem mentioned by Aubin Mahe in
        <http://mail.gnu.org/archive/html/help-bison/2002-12/msg00010.html>.
        * data/glr.c: Comment fix.
        * doc/bison.1: Remove references.  Also, mention "yacc".

        * src/getargs.c (getargs) [MSDOS]: Don't assume optarg != NULL
        with -g option.

        * src/parse-gram.y (declaration): Use enum "report_states" rather
        than its numeric value 1.

        * src/scan-skel.l ("@output ".*\n): Close any old yyout before
        opening a new one.  This fixes Debian bug 165349, reported by
        Bruce Stephens.

2002-12-24  Paul Eggert  <eggert@twinsun.com>

        Version 1.75e.

        * Makefile.maint (cvs-update): Don't assume that the shell
        supports $(...), as Solaris sh doesn't.

        * src/parse-gram.y (lloc_default): Remove test for empty
        nonterminals at the end, since it didn't change the result.

2002-12-24  Paul Eggert  <eggert@twinsun.com>

        If the user does not define YYSTYPE as a macro, Bison now declares it
        using typedef instead of defining it as a macro.  POSIX requires this.
        For consistency, YYLTYPE is also declared instead of defined.

        %union directives can now have a tag before the `{', e.g., the
        directive `%union foo {...}' now generates the C code
        `typedef union foo { ... } YYSTYPE;'; this is for Yacc compatibility.
        The default union tag is `YYSTYPE', for compatibility with Solaris 9
        Yacc.  For consistency, YYLTYPE's struct tag is now `YYLTYPE'
        instead of `yyltype'.

        `yystype' and `yyltype' are now obsolescent macros instead of being
        typedefs or tags; they are no longer documented and will be
        withdrawn in a future release.

        * data/glr.c (b4_location_type): Remove.
        (YYSTYPE): Renamed from yystype.
        (YYSTYPE_IS_DECLARED): New macro, used to prevent double-typedef.
        (struct YYLTYPE): Renamed from struct yyltype.
        (YYLTYPE): Renamed from yyltype.
        (yyltype, yystype): New (and obsolescent) macros,
        for backward compatibility.
        * data/yacc.c: Likewise.

        * data/yacc.c (YYSTYPE): Declare as union YYSTYPE if the user
        does not specify a union tag.  This is for compatibility with
        Solaris 9 yacc.

        * src/parse-gram.y (add_param): 2nd arg is now char * not char
        const *, since it is now modified by stripping surrounding { }.
        (current_braced_code): Remove.
        (PERCENT_DESTRUCTOR, PERCENT_PRINTER, PERCENT_UNION,
        PERCENT_LEX_PARAM, PERCENT_PARSE_PARAM): Change names to include
        trailing " {...}".  Now of type <chars>.
        (grammar_declaration): Adjust to bundled tokens.
        (code_content): Remove; stripping is now done by add_param.
        (print_token_value): Print contents of bundled tokens.
        (token_name): New function.

        * src/reader.h (braced_code, current_braced_code): Remove.
        (token_name): New decl.

        * src/scan-gram.l (handle_dollar, handle_at): Now takes int
        token_type, not braced_code code_kind.  All uses changed.
        (SC_PRE_CODE): New state, for scanning after a keyword that
        has (or usually has) an immediately-following braced code.
        (token_type): New local var, to keep track of which token type
        to return when scanning braced code.
        (<INITIAL>"%destructor", <INITIAL>"%lex-param",
        <INITIAL>"%parse-param", <INITIAL>"%printer",
        <INITIAL>"%union"): Set token type and BEGIN SC_PRE_CODE
        instead of returning a token type immediately.
        (<INITIAL>"{"): Set token type.
        (<SC_BRACED_CODE>"}"): Use it.
        (handle_action_dollar, handle_action_at): Now returns bool
        indicating success.  Fail if ! current_rule; this prevents a core dump.
        (handle_symbol_code_dollar, handle_symbol_code_at):
        Remove; merge body into caller.
        (handle_dollar, handle_at): Complain in invalid contexts.

        * NEWS, doc/bison.texinfo: Document the above.
        * NEWS: Fix years and program names in copyright notice.

2002-12-17  Paul Eggert  <eggert@twinsun.com>

        * NEWS, doc/bison.texinfo (Parser Function, Pure Calling, Error
        Reporting, Table of Symbols): Omit mentions of %lex-param and
        %parse-param from the documentation for now.

2002-12-15  Paul Eggert  <eggert@twinsun.com>

        Undo most of the 2002-11-12 yychar -> yytoken patch, as it broke
        GCC 3.2.1 (which depends on yychar == YYEMPTY when there is no
        lookahead symbol, and which sets yychar in parser actions) and it
        disagreed with the Bison documentation.  Bug
        reported by Andrew Walrond.

        * data/yacc.c (YYTRANSLATE): Don't check for negative argument,
        as the caller now does that.
        (yyclearin, YYBACKUP, yyparse): Use yychar, not yytoken.
        (YYEMPTY): Parenthesize right hand side, since others use it.
        (yyparse): Don't assume that our generated code is the only code
        that sets yychar.

2002-12-13  Paul Eggert  <eggert@twinsun.com>

        Version 1.75d.

        POSIX requires a "yacc" command.
        * src/Makefile.am (bin_SCRIPTS): New macro, for yacc.
        (MOSTLYCLEANFILES): Add yacc.
        (yacc): New rule.
        * doc/bison.texinfo (Invocation, Bison Options): Mention yacc
        as an alias for bison y.

        * po/LINGUAS: Add da.

        * src/getargs.c (__GNU_LIBRARY__) [lint]: Define to work around
        problem with latest <getopt.h>.
        (HACK_FOR___GNU_LIBRARY___PROTOTYPE): New macro.

        * doc/fdl.texi: Upgrade to 1.2.
        * lib/alloca.c, lib/error.c, lib/getopt.c, lib/getopt.h
        lib/getopt1.c, lib/gettext.h, lib/memrchr.c, lib/obstack.c,
        lib/obstack.h, lib/strnlen.c, lib/unlocked-io.h: Sync with
        gnulib.
        * config/install-sh: Sync with autotools.

        Fix a bad interaction with flex 2.5.23 reported by Bruce Lilly in
        <http://mail.gnu.org/archive/html/bug-bison/2002-11/msg00114.html>.
        * data/yacc.c (YYLTYPE, struct yyltype): Do not define unless
        locations are requested.
        (union yyalloc): Do not depend on YYLTYPE_IS_TRIVIAL unless
        locations are requested.

2002-12-12  Paul Eggert  <eggert@twinsun.com>

        Remove unportable casts and storage allocation tricks.
        While we're at it, remove almost all casts, since they
        usually aren't needed and are a sign of trouble.

        * configure.ac (AC_CHECK_TYPES): Check for uintptr_t.

        * src/derives.c (derives_compute): Do not subtract NTOKENS from
        the pointer DSET returned by malloc; this isn't portable.
        Instead, always use DSET[i - NTOKENS] rather than DSET[i].
        Similarly for DERIVES.
        * src/lalr.c (set_goto_map): Likewise, for GOTO_MAP and TEMP_MAP.
        * src/nullable.c (nullable_compute): Likewise, for RSETS and NULLABLE.
        * src/reduce.c (reduce_grammar_tables): Likewise, for nontermmap

        * src/derives.c (derives_compute): Do not bother invoking
        int_of_rule_number, since rule numbers are integers.

        * src/files.c (concat2, tr, compute_base_name): Use xmalloc (N)
        rather than XMALLOC (char, N).

        * src/files.c (filename_split): Rewrite to avoid cast.

        * src/gram.h (symbol_number_as_item_number,
        item_number_as_symbol_number, rule_number_as_item_number,
        item_number_as_rule_number):
        Now inline functions rather than macros, to avoid casts.
        * src/state.h (state_number_as_int): Likewise.
        * src/tables.c (state_number_to_vector_number,
        symbol_number_to_vector_number): Likewise.

        * src/gram.h (int_of_rule_number): Remove; no longer used.

        * src/lalr.c (add_lookback_edge): Use malloc rather than calloc,
        since the resulting storage is always stored into.

        * src/main.c (alloca) [C_ALLOCA]: Add decl here, the only place
        where it's needed.

        * src/muscle_tab.c (muscle_m4_output):
        Now inline.  Return bool, not int.
        * src/state.c (state_compare): Likewise.
        * src/symtab.c (symbol_check_defined,
        symbol_check_alias_consistency, symbol_pack, symbol_translation,
        hash_compare_symbol, hash_symbol):
        Likewise.
        * src/uniqstr.c (uniqstr_print): Likewise.
        * src/muscle_tab.c (muscle_m4_output_processor):
        New function, to avoid casts.
        * src/state.c (state_comparator, stage_hasher): Likewise.
        * src/symtab.c (symbol_check_defined_processor,
        symbol_check_alias_consistency_processor, symbol_pack_processor,
        symbol_translation_processor, hash_symbol_comparator,
        hash_symbol_hasher): Likewise.
        * src/uniqstr.c (uniqstr_print_processor): Likewise.
        * src/muscle_tab.c (muscles_m4_output):
        Use new functions instead of casting old functions unportably.
        * src/state.c (state_hash_new): Likewise.
        * src/symtab.c (symbols_new, symbols_do, symbols_check_defined,
        symbols_token_translations_init):
        Likewise.
        * src/uniqstr.c (uniqstrs_new, hash_initialize, uniqstrs_do): Likewise.

        * src/output.c (GENERATE_MUSCLE_INSERT_TABLE): Use long local
        var instead of casting to long, to avoid casts.
        (prepare_states): Use MALLOC rather than alloca, so that we don't
        have to worry about alloca.
        * src/state.c (state_hash_lookup): Likewise.

        * src/scan-gram.l (<SC_ESCAPED_CHARACTER>"'"): Use unsigned char
        local var instead of casting to unsigned char, to avoid casts.

        * src/state.c (TRANSITIONS_ALLOC, ERRS_ALLOC, REDUCTIONS_ALLOC,
        STATE_ALLOC): Remove.
        (transitions_new, errs_new, reductions_new, state_new): Use malloc
        rather than calloc, and use offsetof to avoid allocating slightly
        too much storage.
        (state_new): Initialize all members.

        * src/state.c (state_hash): Use unsigned accumulator, not signed.

        * src/symtab.c (symbol_free): Remove; unused.
        (symbol_get): Remove cast in lhs of assignment.
        (symbols_do): Now static.  Accept generic arguments, not
        hashing-related ones.

        * src/symtab.h: (NUMBER_UNDEFINED): Remove unnecessary cast.
        (symbol_processor): Remove.
        (symbols_do): Remove decl; now static.

        * src/system.h (alloca): Remove; decl no longer needed.
        (<stddef.h>): Include, for offsetof.
        (<inttypes.>, <stdint.h>): Include if available.
        (uintptr_t): New type, if system lacks it.
        (CALLOC, MALLOC, REALLOC): New macros.
        All uses of XCALLOC, XMALLOC, and XREALLOC changed to use these
        new macros.

        * src/tables.c (table_size): Now int, to pacify GCC.
        (table_grow, table_ninf_remap): Use signed table size.
        (save_row): Don't bother initializing locals when not needed.
        (default_goto, goto_actions, pack_vector): Remove unnecessary casts.
        * src/uniqstr.c (hash_compare_uniqstr):  Likewise.

        * src/vcg.h: Correct misspellings.

        * src/vcg_defaults.h (G_CMAX): Now INT_MAX.


        * src/getargs.c (getargs): Don't assume EOF == -1.

2002-12-09  Paul Eggert  <eggert@twinsun.com>

        Change identifier spellings to avoid collisions with names
        that are reserved by POSIX.

        Don't use names ending in _t, since POSIX reserves them.
        For consistency, remove _e and _s endings -- they're weren't
        needed to remove ambiguity.  All uses changed.
        * src/uniqstr.h (uniqstr): Renamed from uniqstr_t, which in
        turn was just renamed from struniq_t.
        * src/uniqstr.c (uniqstr_processor): Renamed from struniq_processor,
        which in turn was just renamed from struniq_processor_t.
        (hash_compare_uniqstr): Renamed from hash_compare_struniq, which
        in turn was renamed from hash_compare_struniq_t.
        * src/LR0.c (struct state_list): Renamed from struct state_list_s.
        (state_list): Renamed from state_list_t.
        * src/assoc.h (assoc): Renamed from assoc_t.
        * src/conflicts.c (enum conflict_resolution): Renamed from
        enum conflict_resolution_e.
        * src/derives.c (struct rule_list): Renamed from struct rule_list_s.
        (rule_list): Renamed from rule_list_t.
        * src/getargs.h (enum trace): Renamed from enum trace_e.
        (enum report): Renamed from enum report_e.
        * src/gram.h (item_number): Renamed from item_number_t.
        (rule_number): Renamed from rule_number_t.
        (struct rule_s): Remove the "rule_s" part; not used.
        (rule): Renamed from rule_t.
        (rule_filter): Renamed from rule_filter_t.
        * src/lalr.c (struct goto_list): Renamed from struct goto_list_s.
        (goto_list): Renamed from goto_list_t.
        * src/lalr.h (goto_number): Renamed from goto_number_t.
        * src/location.h (location): Renamed from location_t.
        * src/muscle_tab.c (muscle_entry): Renamed from muscle_entry_t,
        and moved here from:
        * src/muscle_tab.h (muscle_entry_t): here.
        * src/nullable.c (struct rule_list): Renamed from struct rule_list_s.
        (rule_list): Renamed from rule_list_t.
        * src/print_graph.c (static_graph): Renamed from graph.
        * src/reader.h (braced_code): Renamed from braced_code_t.
        Remove brace_code_e tag.
        * src/relation.h (relation_node): Renamed from relation_node_t.
        (relation_nodes): Renamed from relation_nodes_t.
        (relation): Renamed from relation_t.
        * src/state.h (state_number): Renamed from state_number_t.
        (struct state): Renamed from struct state_s.
        (state): Renamed from state_t.
        (transitions): Renamed from transitions_t.  Unused (and
        misspelled) transtion_s tag removed.
        (errs): Renamed from errs_t.  Unused errs_s tag removed.
        (reductions): Renamed from reductions_t.  Unused tag
        reductions_s removed.
        * src/symlist.h (symbol_list): Renamed from symbol_list_t.
        (struct symbol_list): Renamed from struct symbol_list_s.
        * src/symtab.h (symbol_number): Renamed from symbol_number_t.
        (struct symbol): Renamed from struct symbol_s.
        (symbol): Renamed from symbol_t.
        * src/tables.c (vector_number): Renamed from vector_number_t.
        (action_number): Renamed from action_t.
        * src/tables.h (base_number): Renamed from base_t.
        * src/vcg.h (enum color): Renamed from enum color_e.
        (enum textmode): Renamed from enum textmode_e.
        (enum shape): Renamed from enum shape_e.
        (struct colorentry): Renamed from struct colorentry_s.
        (struct classname): Renamed from struct classname_s.
        (struct infoname): Renamed from struct infoname_s.
        (enum layoutalgorithm): Renamed from enum layoutalgorithm_e.
        (enum decision): Renamed from enum decision_e.
        (enum orientation): Renamed from enum orientation_e.
        (enum alignment): Renamed from enum alignment_e.
        (enum arrow_mode): Renamed from enum arrow_mode_e.
        (enum crossing_type): Renamed from enum crossing_type_e.
        (enum view): Renamed from enum view_e.
        (struct node): Renamed from struct node_s.
        (node): Renamed from node_t.
        (enum linestyle): Renamed from enum linestyle_e.
        (enum arrowstyle): Renamed from enum arrowstyle_e.
        (struct edge): Renamed from struct edge.
        (edge): Renamed from edge_t.
        (struct graph): Renamed from struct graph_s.
        (graph): Renamed from graph_t.
        * tests/calc.at (_AT_DATA_CALC_Y, Simple LALR Calculator):
        Rename value_t -> value.
        * tests/input.at (Torturing the Scanner): Rename value_t -> value,
        value_t_as_yystype -> value_as_yystype.

        Don't include <errno.h> in the mainstream code, since it
        reserves E[A-Z0-9]* and we want to use symbols like 'EQUALS'.
        * lib/get-errno.c, lib/get-errno.h: New files.
        * lib/Makefile.am (libbison_a_SOURCES): Add get-errno.h,
        get-errno.c.
        * src/files.c (xfopen, xfclose): Use get_errno instead of errno.
        * src/output.c (output_skeleton): Likewise.
        * src/scan-gram.l (<INITIAL>{int}): Use set_errno and get_errno
        instead of errno.
        (<SC_ESCAPED_STRING,SC_ESCAPED_CHARACTER>\\x[0-9abcdefABCDEF]+):
        Likewise.
        (handle_action_dollar, handle_action_at): Likewise.
        * src/system.h: Do not include <errno.h>.
        (TAB_EXT): Renamed from EXT_TAB.
        (OUTPUT_EXT): Renamed from EXT_OUTPUT.

        Avoid str[a-z]*, since <string.h> reserves that name space.
        Change all instances of "struniq" in names to "uniqstr", and
        likewise for "STRUNIQ" and "UNIQSTR".
        * src/uniqstr.c: Renamed from src/struniq.c.
        * src/uniqstr.h: Renamed from src/struniq.h.
        * src/Makefile.am (bison_SOURCES): Adjust to these renamings.
        * src/files.c (strsuffix): Remove; unused.
        (concat2): Renamed from stringappend.  Now static.
        * src/files.h (strsuffix, stringappend): Remove; unused.
        * src/parse-gram.y (<chars>): Renamed from <string>.
        (<uniqstr>): Renamed from <struniq>.
        * src/scan-gram.l (obstack_for_string): Renamed from string_obstack.
        * src/vcg.h (struct node_s.expand): Renamed from struct node_s.stretch.
        (struct graph_s.expand): Renamed from struct graph_s.stretch.
        * src/vcg_defaults.h (G_EXPAND): Renamed from G_STRETCH.
        (G_LONG_STRAIGHT_PHASE): Renamed from G_STRAIGHT_PHASE.
        (N_EXPAND): Renamed from N_STRETCH.

        Avoid *_MAX and *_MIN, since <limits.h> reserves that name space.
        * data/yacc.c (YYSTACK_GAP_MAXIMUM): Renamed from YYSTACK_GAP_MAX.
        * src/gram.h (ITEM_NUMBER_MAX, ITEM_NUMBER_MIN, RULE_NUMBER_MAX):
        Remove; unused.
        * src/lalr.h (GOTO_NUMBER_MAXIMUM): Renamed from GOTO_NUMBER_MAX.
        * src/state.h (STATE_NUMBER_MAXIMUM): Renamed from STATE_NUMBER_MAX.
        * src/symtab.h (SYMBOL_NUMBER_MAXIMUM): Renamed from SYMBOL_NUMBER_MAX.
        * src/tables.c (VECTOR_NUMBER_MAX, VECTOR_NUMBER_MIN): Remove; unused.
        (BASE_MAXIMUM): Renamed from BASE_MAX.
        (BASE_MINIMUM): Renamed from BASE_MIN.
        (ACTION_MAX): Remove; unused.
        (ACTION_NUMBER_MINIMUM): Renamed from ACTION_MIN.
        Unnecessary casts removed from above defines.


        Fix misspelling in names.
        * src/vcg.h (enum_alignment_e): Renamed from enum_alignement_e.
        * src/vcg_defaults.h (G_NODE_ALIGNMENT): Renamed from
        G_NODE_ALIGNEMENT.


        * lib/timevar.c (timevar_report): Renamed from time_report,
        for consistency with other names.
        * lib/timevar.h (timevar_report): New decl.
        * src/system.h (time_report): Remove; decl is now in lib/timevar.h.


        Sort include-file uses.

        Reorder all include files under src to be in the order "system.h".
        then the ../lib include files in angle brackets (alphabetized),
        then the . include files in double-quotes (alphabetized).  Fix
        dependency breakages encountered in this process, as follows:
        * src/closure.h, src/derives.h, src/state.h: Include "gram.h".
        * src/complain.c: Don't include stdlib.h, string.h _LIBC stuff.
        * src/state.h: Include "symtab.h".

2002-12-08  Paul Eggert  <eggert@twinsun.com>

        * data/glr.c, data/lalr1.cc, data/yacc.c: Do not use __file__,
        since this causes problems when __file__ contains character
        sequences like "@" that are treated specially by src/scan-skel.l.
        Instead, just use the file's basename.  This fixes the bug
        reported by Martin Mokrejs in
        <http://mail.gnu.org/archive/html/bug-bison/2002-12/msg00007.html>.

2002-12-06  Paul Eggert  <eggert@twinsun.com>

        Add support for rules that do not have trailing semicolons, as
        POSIX requires.  Improve the quality of locations in Bison
        diagnostics.

        * src/location.c: Include <quotearg.h>.
        (empty_location): Now const.
        (location_print): New function.  Follow the recommendation of the
        GNU Coding Standards for locations that span file boundaries.
        * src/location.h: Do not include <quotearg.h>; no longer needed.
        (boundary): New type.
        (location_t): Use it.  This allows locations to span file boundaries.
        All member uses changed: file -> start.file or end.file (as needed),
        first_line -> start.line, first_column -> start.column,
        last_line -> end.line, last_column -> end.column.
        (equal_boundaries): New function.
        (LOCATION_RESET, LOCATION_STEP): Remove.
        (LOCATION_PRINT): Remove.  All callers changed to use location_print.
        (empty_location): Now const.
        (location_print): New decl.
        * src/parse-gram.y (lloc_default): New function, which handles
        empty locations more accurately.
        (YYLLOC_DEFAULT): Use it.
        (%token COLON): Remove.
        (%token ID_COLON): New token.
        (rules): Use it.
        (declarations, rules): Remove trailing semicolon.
        (declaration, rules_or_grammar_declaration):
        Allow empty (";") declaration.
        (symbol_def): Remove empty actions; no longer needed.
        (rules_or_grammar_declaration): Remove trailing semicolon.
        (semi_colon.opt): Remove.
        * src/reader.h: Include location.h.
        (scanner_cursor): New decl.
        * src/reduce.c (nonterminals_reduce): Use warn_at rather than
        rolling our own.
        * src/scan-gram.l (YY_USER_INIT): Initialize scanner_cursor instead
        of *loc.
        (STEP): Remove.  No longer needed, now that adjust_location does
        the work.  All uses removed.
        (scanner_cursor): New var.
        (adjust_location): Renamed from extend_location.  It now sets
        *loc and adjusts the scanner cursor.  All uses changed.
        Don't bother testing for CR.
        (handle_syncline): Remove location arg; now updates scanner cursor.
        All callers changed.
        (unexpected_end_of_file): Now accepts start boundary of token or
        comment, not location.  All callers changed.  Update scanner cursor,
        not the location.
        (SC_AFTER_IDENTIFIER): New state.
        (context_state): Renamed from c_context.  All uses changed.
        (id_loc, code_start, token_start): New local vars.
        (<INITIAL,SC_AFTER_IDENTIFIER>): New initial context.  Move all
        processing of Yacc white space and equivalents here.
        (<INITIAL>{id}): Save id_loc.  Begin state SC_AFTER_IDENTIFIER
        instead of returning ID immediately, since we need to search for
        a subsequent colon.
        (<INITIAL>"'", "\""): Save token_start.
        (<INITIAL>"%{", "{", "%%"): Save code_start.
        (<SC_AFTER_IDENTIFIER>): New state, looking for a colon.
        (<SC_YACC_COMMENT>, <SC_COMMENT>, <SC_LINE_COMMENT>):
        BEGIN context_state at end, not INITIAL.
        (<SC_ESCAPED_STRING>"\"", <SC_ESCAPED_CHARACTER>"'",
        <SC_BRACED_CODE>"}", <SC_PROLOGUE>"%}", <SC_EPILOGUE><<EOF>>):
        Return correct token start.
        (<SC_BRACED_CODE,SC_PROLOGUE,SC_EPILOGUE>): Save start boundary when
        the start of a character, string or multiline comment is found.
        * tests/conflicts.at (S/R in initial, Defaulted Conflicted
        Reduction): Adjust reported locations to match the more-precise
        results now expected.
        * tests/input.at (Invalid $n, Invalid @n, Type Clashes): Likewise.
        * tests/reduce.at (Useless Rules, Reduced Automaton,
        Underivable Rules): Likewise.
        * tests/regression.at (Invalid inputs): No longer `expecting ";"
        or "|"' now that so many other tokens are allowed by the new grammar.

        * src/complain.h (current_file): Remove duplicate decl;
        current_file is now owned by files.h.
        * src/complain.c, src/scan-gram.l: Include files.h.

2002-12-06  Paul Eggert  <eggert@twinsun.com>

        * data/glr.c (yy_reduce_print): Don't assume that yyrline[yyrule]
        promotes to int; it might be unsigned int.
        * data/yacc.c (yy_reduce_print): Likewise.

        * doc/bison.texinfo (Table of Symbols): YYERROR_VERBOSE should
        be #defined in the prologue, not in the Bison declarations.
        This fixes Debian Bug 102878, reported by Shaul Karl.

2002-12-02  Paul Eggert  <eggert@twinsun.com>

        * configure.ac (AC_REPLACE_FUNCS): Add strtoul.
        * lib/strtoul.c: New file, from gnulib.
        This fixes a porting bug reported by Peter Klein in
        <http://mail.gnu.org/archive/html/bug-bison/2002-12/msg00000.html>.

2002-11-30  Paul Eggert  <eggert@twinsun.com>

        * src/scan-gram.l (no_cr_read, extend_location): Move to epilogue,
        and put only a forward declaration in the prologue.  This is for
        consistency with the other scanner helper functions.

        Type clashes now generate warnings, not errors, since it
        appears that POSIX may allow some grammars with type clashes.
        * src/reader.c (grammar_current_rule_check): Warn about
        type clashes instead of complaining.
        * tests/input.at (Type Clashes): Expect warnings, not complaints.

        Add Yacc library, since POSIX requires it.
        * doc/bison.texinfo (Yacc Library): New node.  Regenerate top menu.
        * lib/Makefile.am (lib_LIBRARIES, liby_a_SOURCES): New macros.
        * lib/main.c, lib/yyerror.c: New files.

        gram_error can be static; it need not be extern.
        * src/reader.h (gram_error): Remove decl.
        * src/parse-gram.y (gram_error): Now static.  Add static decl.
        (print_token_value): Omit parameter names from forward decl,
        for consistency.

2002-11-29  Paul Eggert  <eggert@twinsun.com>

        * doc/bison.texinfo: Emphasize that yylex and yyerror must
        be declared before being used.  E.g., one should typically
        declare them in the prologue.  Use GNU coding style in examples.
        Put "const" consistently after the type it modifies.  Mention
        that C99 supports "inline".  Mention that yyerror traditionally
        returns "int".

        %parse-param and %lex-param now take just one argument, the
        declaration; the argument name is deduced from the declaration.

        * doc/bison.texinfo (Parser Function, Pure Calling, Error
        Reporting, Table of Symbols): Document this.
        * src/parse-gram.y (add_param): New function.
        (COMMA): Remove.
        (declaration): Implement new rule for %parse-param and %lex-param.
        * src/scan-gram.l: "," now elicits a warning, rather than being
        a token; this is more compatible with byacc.
        * tests/calc.at (Simple LALR Calculator): Adopt new convention.

2002-11-27  Paul Eggert  <eggert@twinsun.com>

        Rename identifiers to avoid real and potential collisions.

        * data/c.m4 (b4_yysymprint_generate): yyout -> yyoutput,
        to avoid collision with lex macro described by Bruce Lilly in
        <http://mail.gnu.org/archive/html/bug-bison/2002-11/msg00114.html>.
        * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Likewise.
        * doc/bison.texinfo (Prologue, Tracing): yyprint -> print_token_value.
        * src/parse-gram.y (print_token_value): Renamed from yyprint.
        All uses changed.
        (YYPARSE_PARAM, YYLEX_PARAM, yycontrol): Remove.  All uses changed.
        The name "yycontrol" violates the name space rules, and this stuff
        wasn't being used anyway.
        (input): Remove action; this stuff wasn't being used.
        (gram_error): Rename local variable yylloc -> loc.
        * src/reader.h (struct gram_control_s, gram_control_t): Remove.
        (YY_DECL): Don't use "yy" at start of local variables.
        All uses changed, e.g., yylloc -> loc.
        * src/scan-gram.l (STEP): Renamed from YY_STEP.  All uses changed.
        (STRING_GROW): Renamed from YY_OBS_GROW.  All uses changed.
        (STRING_FINISH): Renamed from YY_OBS_FINISH.  All uses changed.
        (STRING_FREE): Renamed from YY_OBS_FREE.  All uses changed.

        * src/parse-gram.y (gram_error): loc is now const *.
        * src/reader.h (gram_error): Likewise.

2002-11-24  Paul Eggert  <eggert@twinsun.com>

        Version 1.75c.

        * tests/actions.at (Actions after errors): Use an output format
        more similar to that of the Printers and Destructors test.
        Test the position of the ';' token too.
        (Printers and Destructors): Likewise.
        (Printers and Destructors: %glr-parser): Remove for now, to avoid
        unnecessarily alarming people when the test fails.

        * data/yacc.c (yyerrlab1): Move this label down, so that the
        parser does not discard the lookahead token if the user code
        invokes YYERROR.  This change is required for POSIX conformance.

        * lib/error.c: Sync with gnulib.

2002-11-22  Paul Eggert  <eggert@twinsun.com>

        * lib/quotearg.c, lib/quotearg.h: Sync with gnulib.
        * lib/mbswidth.c, lib/mbswidth.h: Likewise.
        * lib/xmalloc.c: Likewise.

2002-11-20  Paul Eggert  <eggert@twinsun.com>

        * lib/argmatch.c, lib/argmatch.h: Sync with gnulib.

2002-11-20  Paul Eggert  <eggert@twinsun.com>

        Avoid use of <assert.h>, as the GNU Coding Standards hint that one
        should use `if (! x) abort ();' rather than `assert (x);', and
        anyway it's one less thing to worry about configuring.

        * data/glr.c, lib/hash.c, src/system.h: Do not include <assert.h>.
        * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Likewise,
        and replace all instances of assert with abort.
        * tests/calc.at (_AT_DATA_CALC_Y): Likewise.
        * tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): Likewise.

        * data/glr.c (yydoAction, yyglrReduce, yysplitStack, yyresolveStates,
        yyresolveAction, yyprocessOneStack): Use abort rather than assert.
        * lib/hash.c (hash_lookup, hash_get_first, hash_get_next,
        hash_find_entry, hash_rehash, hash_insert): Likewise.
        * src/conflicts.c (resolve_sr_conflict): Likewise.
        * src/lalr.c (set_goto_map, map_goto): Likewise.
        * src/nullable.c (nullable_compute): Likewise.
        * src/output.c (prepare_rules, token_definitions_output): Likewise.
        * src/reader.c (packgram, reader): Likewise.
        * src/state.c (state_new, state_free, state_transitions_set,
        state_reduction_find): Likewise.
        * src/symtab.c (symbol_user_token_number_set, symbol_make_alias,
        symbol_pack): Likewise.
        * src/tables.c (conflict_row, pack_vector): Likewise.
        * src/vcg.c (get_color_str, get_textmode_str, get_shape_str,
        get_layoutalgorithm_str, get_decision_str, get_orientation_str,
        get_node_alignement_str, get_arrow_mode_str, get_crossing_type_str,
        get_view_str, get_linestyle_str, get_arrowstyle_str): Likewise.

        * lib/argmatch.h (ARRAY_CARDINALITY): Do not bother to #undef.
        (ARGMATCH_CONSTRAINT): New macro.
        (ARGMATCH_ASSERT): Use it.

        * src/system.h (verify): New macro.
        * src/getargs.c (trace_argmatch, report_argmatch): Use verify
        rather than assert.
        * src/tables.c (tables_generate): Likewise.

        * src/struniq.c (struniq_assert): Now returns void, and aborts
        if the assertion is false.
        (struniq_assert_p): Remove.
        * src/struniq.h: Likewise.

2002-11-18  Paul Eggert  <eggert@twinsun.com>

        * data/glr.c (yygetLRActions): Replace `yyindex' with
        `yytable[yyindex]' to fix typo introduced in my 2002-11-09 patch.
        This fixes the regression with Sun ONE Studio 7 cc that I reported in
        <http://mail.gnu.org/archive/html/bug-bison/2002-11/msg00077.html>.

2002-11-18  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo (Tracing): `yyprint' shouldn't prepend a
        space.
        From Tim Van Holder.

2002-11-17  Paul Eggert  <eggert@twinsun.com>

        Pacify Sun ONE Studio 7 lint.  Also, rename "ParseError"
        to "SyntaxError" for consistency with my 2002-11-15 change.

        * data/glr.c (YYDPRINTF, YYDSYMPRINT, YYDSYMPRINTF) [!YYDEBUG]: Do
        not define to {}, since this breaks the common use of `YYDPRINTF
        ((...));' if a single statement is desired (e.g. before `else').
        Work around GCC warnings by surrounding corresponding calls with
        {} if needed.
        (yyhasResolvedValue): Remove unused function.
        (yymergeOptionSets, yyresolvStack): Use `continue;' for empty
        loop body.
        (yyreportSyntaxError): Renamed from yyreportParseError.
        (yyrecoverSyntaxError): Renamed from yyrecoverParseError.
        All uses changed.
        * tests/calc.at (_AT_DATA_CALC_Y): Make vars static instead of
        extern when possible.  Remove unused initializations.

2002-11-16  Akim Demaille  <akim@epita.fr>

        Augment the similarity between GLR and LALR traces.

        * data/yacc.c (yy_stack_print, YY_STACK_PRINT, yy_reduce_print)
        (YY_REDUCE_PRINT): New.
        (yyparse): Use them.
        * data/glr.c (yy_reduce_print): Use YYFPRINTF, no need for
        YYDPRINT here.
        (yyglrReduce, yyrecoverParseError, yyparse): Don't report the
        state reached after the reduction/recovery, since...
        (yyparse, yyprocessOneStack): Report the state we are entering in.

2002-11-16  Akim Demaille  <akim@epita.fr>

        * src/getargs.h, src/getargs.c (trace_e, trace_args, trace_types):
        Add support for --trace=skeleton.
        * src/scan-skel.l: %option debug.
        Scan strings of non-@ or \n instead of character by character.
        (scan_skel): Handle trace_skeleton.
        (QPUTS): New.
        (@output_parser_name@, @output_header_name@): ``Restore'' their
        support (used to be M4 macros).
        * data/yacc.c: Quote larger chunks, a la glr.c.
        * data/lalr1.cc: Likewise.
        The header guards are no longer available, so use some other
        string than `YYLSP_NEEDED'.

2002-11-16  Akim Demaille  <akim@epita.fr>

        Make the ``Printers and Destructors'' test more verbose, taking
        `yacc.c''s behavior as (possibly wrong) reference.

        * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Use printf
        instead of fprint on stdout.
        Set and report the last_line of the symbols.
        Consistently display values and locations.

2002-11-16  Paul Eggert  <eggert@twinsun.com>

        * data/yacc.c: Avoid over-quoting of __line__ and __file__.

2002-11-15  Paul Eggert  <eggert@twinsun.com>

        * tests/actions.at (Actions after errors): New test case.

        * data/glr.c, data/lalr1.cc, data/yacc.cc, doc/bison.texinfo,
        src/conflicts.c, src/parse-gram.y, src/tables.c, src/tables.h,
        tests/action.at, tests/calc.at, tests/conflicts.at,
        tests/cxx-type.at, tests/regression.at:
        "parse error" -> "syntax error" for POSIX compatibility.
        "parsing stack overflow..." -> "parser stack overflow" so
        that code matches Bison documentation.

2002-11-15  Akim Demaille  <akim@epita.fr>

        * src/parse-gram.y (declaration): Have %parse-param and %lex-param
        take two BRACED_CODE, not two string_content.
        Free the scanner's obstack when we are done.
        (code_content): New.
        * tests/calc.at: Adjust.
        * doc/bison.texinfo: Adjust.
        Also, make sure to include the `,' for these declarations.

2002-11-15  Tim Van Holder  <tim.van.holder@pandora.be>

        * m4/prereq.m4: Removed the commented jm_PREREQ_HASH
        definition; avoids potential autoreconf problems.

2002-11-15  Akim Demaille  <akim@epita.fr>

        Always check the value returned by yyparse.

        * tests/calc.at (_AT_DATA_CALC_Y): Have `main' exit with the value
        returned by yyparse.
        (_AT_CHECK_CALC_ERROR): Take the expected exit value as argument.
        Adjust calls.
        * tests/glr-regr1.at (glr-regr1.y): Have `main' exit with the value
        returned by yyparse.

2002-11-14  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>

        * data/glr.c (yyFail): Always set yyerrflag.  Corrects regression
        on input.at test.

2002-11-14  Paul Eggert  <eggert@twinsun.com>

        * src/output.c (output_skeleton): Call xfopen instead of
        duplicating xfopen's body.

        Fix bugs reported by Nelson H. F. Beebe in
        <http://mail.gnu.org/archive/html/bug-bison/2002-11/msg00078.html>.

        * tests/headers.at (AT_TEST_CPP_GUARD_H): Don't assume that
        "$CC -E foo.h" is allowed, as this doesn't work with the Portland
        Group compiler.  Instead, use "$CC -E bar.c".  Include the .h
        file twice in the grammar, as an extra check.

        * tests/input.at (Torturing the Scanner): Surround the
        backslash-newline tests with "#if 0", to make it less likely that
        we'll run into compiler bugs.  Bring back solitary \ inside
        comment, but add a closing comment to work around HP C bug.  Don't
        test backslash-newline in C character constant.

2002-11-14  Akim Demaille  <akim@epita.fr>

        * tests/synclines.at (AT_SYNCLINES_COMPILE): Ignore the exit
        status of the compiler.
        Calling `exit 1' is no longer needed.
        Reported by Nelson H. F. Beebe.

2002-11-14  Akim Demaille  <akim@epita.fr>

        * tests/atlocal.in (CPPFLAGS): We have config.h.
        * tests/testsuite.at (AT_DATA_GRAMMAR_PROLOGUE, AT_DATA_GRAMMAR):
        New.
        * tests/actions.at, tests/calc.at, tests/conflicts.at,
        * tests/cxx-type.at, tests/glr-regr1.at, tests/headers.at,
        * tests/regression.at, tests/torture.at: Use them for all the
        grammars that are to be compiled.
        * tests/cxx-type.at (_AT_TEST_GLR_CALC): Rename as...
        * tests/cxx-type.at (_AT_TEST_GLR_CXXTYPES): this.
        * doc/bison.texinfo (GLR Parsers): Document `inline'.

2002-11-14  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo: Various formatting changes (alignments in
        samples, additional @group/@end group, GCS in samples.
        Use @deffn instead of simple @table to define the directives,
        macros, variables etc.

2002-11-13  Paul Eggert  <eggert@twinsun.com>

        Fix some bugs reported by Albert Chin-A-Young in
        <http://mail.gnu.org/archive/html/bug-bison/2002-11/msg00066.html>.

        * tests/input.at (Torturing the Scanner): Don't invoke "cc a.c b.c
        -o c"; the HP C compiler chatters during compilation.
        Instead, invoke "cc -c a.c -o a.o; cc -c b.c -o b.o; cc a.o b.o -o c".
        * tests/headers.at (export YYLTYPE): Likewise.

        * tests/input.at (Torturing the Scanner): Remove lines containing
        solitary backslashes, as they tickle a bug in the HP C compiler.

        * tests/glr-regr1.at (Badly Collapsed GLR States): Avoid //
        comments, since they're not portable.  Use GNU coding style.

2002-11-13  Akim Demaille  <akim@epita.fr>

        * data/yacc.c: Leave bigger chunks of quoted text.
        (YYDSYMPRINTF): New.
        Use it to report symbol activities.
        * data/glr.c (YYDSYMPRINTF): New.
        Use it.

2002-11-12  Paul Eggert  <eggert@twinsun.com>

        Version 1.75b.

        * data/glr.c (yydoAction): Return YYRESULTTAG, not int.
        (yyglrReduce): Return yyok, not 0.
        This should avoid the enumerated-type warnings reported
        by Nelson H. F. Beebe in
        <http://mail.gnu.org/archive/html/bug-bison/2002-11/msg00057.html>.

        * lib/bbitset.h (BITSET_INLINE): Remove.
        * lib/bitset.h [! BITSET_INLINE]: Remove.
        (bitset_set, bitset_reset, bitset_test): Rename local vars
        to avoid shadowing warnings by GCC.

        * data/glr.c (inline): Remove #define.  It's the user's
        responsibility to #define it away, just like 'const'.
        This fixes one of the bugs reported by Nelson H. F. Beebe in
        <http://mail.gnu.org/archive/html/bug-bison/2002-11/msg00058.html>.

        * Makefile.maint (po-check): Scan .l and .y files instead of the
        .c and the .h files that they generate.  This fixes the bug
        reported by Tim Van Holder in:
        <http://mail.gnu.org/archive/html/bison-patches/2002-11/msg00062.html>
        Look for N_ as well as for _.  Try to avoid matching #define for
        N_ and _.
        * po/POTFILES.in: Remove src/parse-gram.c, src/scan-gram.c,
        src/system.h.  Add src/parse-gram.y, src/scan-gram.l.
        * src/scan-gram.l: Revamp regular expressions so that " and '
        do not confuse xgettext.

        * src/struniq.h (struniq_new): Do not declare the return type
        to be 'const'; this violates the C standard.
        * src/struniq.c (struniq_new): Likewise.

2002-11-12  Albert Chin-A-Young <china@thewrittenword.com>

        * src/Makefile.am (LDADD): Link $(LIBINTL) last to avoid the
        duplicate definition of optind on Tru64 UNIX 4.0D with the Compaq
        linker.

2002-11-12  Akim Demaille  <akim@epita.fr>

        * Makefile.maint: Sync with Autoconf:
        (local_updates): New.

2002-11-12  Akim Demaille  <akim@epita.fr>

        * po/POTFILES.in (src/lalr.c, src/state.c): Remove

2002-11-12  Akim Demaille  <akim@epita.fr>

        * tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Display the
        locations.

2002-11-12  Akim Demaille  <akim@epita.fr>

        * data/c.m4 (b4_yysymprint_generate): Pass *yyvaluep to YYPRINT,
        not yyvalue.

2002-11-12  Akim Demaille  <akim@epita.fr>

        * tests/actions.at (AT_CHECK_PRINTER_AND_DESTRUCTOR): New.
        Use it to test the GLR parser.

2002-11-12  Akim Demaille  <akim@epita.fr>

        * tests/regression.at (input.y): s/YYEOF/MYEOF/, as the skeleton
        defines it.
        * data/glr.c (yystos): New.
        (b4_yysymprint_generate, b4_yydestruct_generate): Invoke.
        (YYDSYMPRINT): New.
        (yyval): Don't define it, it is handled via M4.
        (yyrecoverParseError): Free verbosely the discarded symbols.
        * data/yacc.c (yysymprint): Remove, rather...
        (b4_yysymprint_generate): invoke.
        * data/c.m4 (b4_yysymprint_generate): New.
        Accept pointers as arguments, as opposed to the version from
        yacc.c.
        (b4_yydestruct_generate): Likewise.
        * tests/cations.at (Printers and Destructors): Use Bison directives
        instead of CPP macros.
        Don't rely on internal details.

2002-11-12  Akim Demaille  <akim@epita.fr>

        * data/c.m4 (b4_yydestruct_generate, b4_symbol_actions): New.
        * data/yacc.c: Rename yychar1 as yytoken, as in glr.c.
        Don't work on yychar (i.e., do set it to YYEMPTY, don't match
        it against YYEMPTY and so forth), work on yytoken (i.e., set
        it to YYEMPTY etc.).
        (yydestruct): Replace with a b4_yydestruct_generate invocation.
        (b4_symbol_actions): Remove.
        * data/glr.c (YYTRANSLATE): As for yacc.c, if negative, it stands
        for 0, end-of-input.

2002-11-12  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo (Destructor Decl): New.

2002-11-12  Akim Demaille  <akim@epita.fr>

        * src/tables.c (tables_generate): Use free for pointers that
        cannot be NULL, not XFREE.
        (pack_vector): Use assert, not fatal, for bound violations.
        * src/state.c (state_new): Likewise.
        * src/reader.c (reader): Likewise.
        * src/lalr.c (set_goto_map): Likewise.
        * src/location.h (LOCATION_PRINT): If first_line is 0, just issue
        the file name.

2002-11-12  Akim Demaille  <akim@epita.fr>

        * src/scan-gram.l, src/reader.h (scanner_last_string_free):
        Restore.
        * src/scan-gram.l (last_string): Is global to the file, not to
        yylex.
        * src/parse-gram.y (input): Don't append the epilogue here,
        (epilogue.opt): do it here, and free the scanner's obstack.
        * src/reader.c (epilogue_set): Rename as...
        (epilogue_augment): this.
        * data/c.m4 (b4_epilogue): Defaults to empty.

2002-11-12  Akim Demaille  <akim@epita.fr>

        * src/getargs.c (long_options): Remove duplicates.
        * src/vmsgetargs.c, src/build.com, src/bison.cld, src/vmshlp.mar:
        Remove.
        * doc/bison.rnh: Remove.
        * doc/bison.texinfo (VMS Invocation): Remove.

2002-11-12  Akim Demaille  <akim@epita.fr>

        * src/struniq.h, src/struniq.c (struniq_t): Is const.
        (STRUNIQ_EQ, struniq_assert, struniq_assert_p): New.

        Use struniq for symbols.

        * src/symtab.h (symbol_t): The tag member is a struniq.
        (symbol_type_set): Adjust.
        * src/symtab.c (symbol_new): Takes a struniq.
        (symbol_free): Don't free the tag member.
        (hash_compare_symbol_t, hash_symbol_t): Rename as...
        (hash_compare_symbol, hash_symbol): these.
        Use the fact that tags as struniqs.
        (symbol_get): Use struniq_new.
        * src/symlist.h, src/symlist.c (symbol_list_n_type_name_get):
        Returns a strniq.
        * src/reader.h (merger_list, grammar_currentmerge_set): The name
        and type members are struniqs.
        * src/reader.c (get_merge_function)
        (grammar_current_rule_merge_set): Adjust.
        (TYPE, current_type): Are struniq.

        Use struniq for file names.

        * src/files.h, src/files.c (infile): Split into...
        (grammar_file, current_file): these.
        * src/scan-gram.c (YY_USER_INIT, handle_syncline): Adjust.
        * src/reduce.c (reduce_print): Likewise.
        * src/getargs.c (getargs): Likewise.
        * src/complain.h, src/complain.c: Likewise.
        * src/main.c (main): Call struniqs_new early enough to use it for
        file names.
        Don't free the input file name.

2002-11-12  Akim Demaille  <akim@epita.fr>

        * src/symtab.c (symbol_free): Remove dead deactivated code:
        type_name are properly removed.
        Don't use XFREE to free items that cannot be NULL.
        * src/struniq.h, src/struniq.c: New.
        * src/main.c (main): Initialize/free struniqs.
        * src/parse-gram.y (%union): Add astruniq member.
        (yyprint): Adjust.
        * src/scan-gram.l (<{tag}>): Return a struniq.
        Free the obstack bit that used to store it.
        * src/symtab.h (symbol_t): The 'type_name' member is a struniq.

2002-11-11  Paul Eggert  <eggert@twinsun.com>

        Revamp to fix many (but not all) of the C- and M4-related quoting
        problems.  Among other things, this fixes the Bison bug reported
        by Jan Hubicka when processing the Bash grammar; see:
        <http://mail.gnu.org/archive/html/bison-patches/2002-11/msg00039.html>

        Use new @ escapes consistently.  Represent brackets with @{ and @}
        rather than @<:@ and @:>@, since this works a bit better with dumb
        editors like vi.  Represent @ with @@, since @ is now consistently
        an escape.  Use @oline@ and @ofile@ rather than __oline__ and
        __ofile__, to avoid unexpected expansions.  Similarly, use @output
        rather than #output.

        * data/c.m4 (b4_copyright): Omit file name from comment, since
        the file name could contain "*/".
        (b4_synclines_flag): Don't quote the 2nd argument; it should already
        be quoted.  All uses changed.

        * data/glr.c: Use new @ escapes consistently.
        (b4_input_suffix, b4_output_parser_suffix, b4_output_parser_name,
        b4_output_header_suffix, b4_output_header_name, b4_header_guard):
        Remove, since they couldn't handle arbitrary characters in file
        names.
        * data/lalr1.cc: Likewise.
        * data/yacc.c: Likewise.

        * src/files.c (output_infix): Remove; all uses removed.
        * src/files.h: Likewise.

        * data/glr.c: Remove use of "#ifdef b4_header_guard", since it
        mishandled funny characters in file names, and anyway it isn't
        needed any more.
        * data/yacc.c: Likewise.
        * data/lalr1.cc: Use YYSLP_NEEDED instead of b4_header_guard.

        * data/glr.c (YYSTYPE_IS_TRIVIAL): Define when the .h file would.
        * data/yacc.c: Likewise.

        * src/muscle_tab.c: Include quotearg.h, since we need to quote C
        strings now.
        (muscle_init): Quote filename as a C string.
        * src/muscle_tab.h (MUSCLE_GROW_STRING_PAIR): Remove; unused.
        (MUSCLE_OBSTACK_SGROW, MUSCLE_INSERT_C_STRING): New macros.
        * src/output.c (escaped_file_name_output): New function.
        (prepare_symbols): Quote tokens for M4.
        (prepare): Don't insert output_infix, output_prefix,
        output_parser_name, output_header_name; this is now down by scan-skel.
        Insert skeleton as a C string.

        * src/output.c (user_actions_output, symbol_destructors_output,
        symbol_printers_output): Quote filenames for C and M4.
        * src/reader.c (prologue_augment, epilogue_set): Likewise.

        * src/scan-gram.l (<SC_CHARACTER>): Don't worry about any backslash
        escapes other than \\ and \'; this simplifies the code.
        (<SC_STRING>): Likewise, for \\ and \".
        (<SC_COMMENT,SC_LINE_COMMENT,SC_STRING,SC_CHARACTER,SC_BRACED_CODE,
        SC_PROLOGUE,SC_EPILOGUE>): Escape $ and @, too.
        Use new escapes @{ and @} for [ and ].

        * src/scan-skel.l (yylineno, yyoutname): Remove static vars, replacing
        them with auto vars.
        Switch to new escape scheme, where @ is the escape character uniformly.
        Abort if a stray escape character is found.  Avoid unbounded input
        buffer when parsing non-escaped text.

        * tests/input.at (Torturing the Scanner): Add tests that @oline@,
        __oline__, #output, $@, and @{ do not have unintended meanings.

2002-11-09  Paul Eggert  <eggert@twinsun.com>

        Fix the test failure due to GCC warnings described in
        <http://mail.gnu.org/archive/html/bug-bison/2002-11/msg00000.html>.
        * data/glr.c (yyis_pact_ninf, yyis_table_ninf): New macros, which
        evaluate to 0 if it's impossible for NINF to be in the respective
        table.
        (yygetLRActions, yyrecoverParseError): Use them.

        * src/scan-gram.l (unexpected_end_of_file): Fix bug: columns were
        counted in the token inserted at end of file.  Now takes
        location_t *, not location_t, so that the location can be
        adjusted.  All uses changed.

        * tests/regression.at (Invalid inputs): Adjust wording in
        diagnostic to match the new behavior.

        * tests/torture.at (AT_DATA_TRIANGULAR_GRAMMAR,
        AT_DATA_HORIZONTAL_GRAMMAR, AT_DATA_LOOKAHEADS_GRAMMAR,
        AT_DATA_STACK_TORTURE): Replace `assert (x);' with `if (! (x))
        abort ();'.  This reduces the runtime of the "Many lookaheads"
        test from 27.6 to 2.7 minutes on a 440 MHz Ultrasparc III running
        GCC 3.2.

2002-11-07  Paul Eggert  <eggert@twinsun.com>

        * src/parse-gram.y (CHARACTER): Remove unused token.
        All uses removed.

        * src/scan-gram.l: Remove stack option.  We no longer use the
        stack, since the stack was never deeper than 1; instead, use the
        new auto var c_context to record the stacked value.

        Remove nounput option.  At an unexpected end of file, we now unput
        the minimal input necessary to end cleanly; this simplifies the
        code.

        Avoid unbounded token sizes where this is easy.

        (unexpected_end_of_file): New function.
        Use it to systematize the error message on unexpected EOF.
        (last-string): Now auto, not static.
        (YY_OBS_FREE): Remove unnecessary do while (0) wrapper.
        (scanner_last_string_free): Remove; not used.
        (percent_percent_count): Move decl to just before use.
        (SC_ESCAPED_CHARACTER): Return ID at unexpected end of file,
        not the (never otherwised-used) CHARACTER.

2002-11-07  Akim Demaille  <akim@epita.fr>

        Let yyerror always receive the msg as last argument, so that
        yyerror can be variadic.

        * data/yacc.c (b4_yyerror_args): New.
        Use it when calling yyerror.
        * data/glr.c (b4_yyerror_args, b4_lyyerror_args): New.
        Use it when calling yyerror.
        * doc/bison.texinfo (Error Reporting): Adjust.
        * tests/calc.at (_AT_DATA_CALC_Y): Adjust.
        * tests/cxx-type.at (_AT_TEST_GLR_CALC): Adjust.

2002-11-06  Akim Demaille  <akim@epita.fr>

        #line should have quoted strings.
        Ideally, this should be done by m4_quotearg.

        * src/scan-skel.l: Include quotearg.h.
        Quote __ofile__.
        * src/output.c (symbol_printers_output)
        (symbol_destructors_output): Quote the file name.

2002-11-06  Akim Demaille  <akim@epita.fr>

        * tests/regression.at (Invalid inputs): Adjust to the recent
        messages.

2002-11-06  Akim Demaille  <akim@epita.fr>

        Restore --no-lines.
        Reported by Jim Kent.

        * data/c.m4 (b4_syncline): New.
        * data/glr.c, data/yacc.c, data/lalr1.cc: Use it.
        * src/reader.c (prologue_augment, epilogue_set): Use b4_syncline.
        * src/output.c (user_actions_output): Likewise.
        (prepare): Define 'b4_synclines_flag'.
        * src/muscle_tab.c (muscle_init): Don't define b4_linef.

2002-11-06  Akim Demaille  <akim@epita.fr>

        * src/main.c (main): Free `infile'.
        * src/scan-gram.l (handle_syncline): New.
        Recognize `#line'.
        * src/output.c (user_actions_output, symbol_destructors_output)
        (symbol_printers_output): Use the location's file name, not
        infile.
        * src/reader.c (prologue_augment, epilogue_set): Likewise.

2002-11-05  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>

        * src/tables.c (matching_state): Don't allow states to match if
        either has GLR conflict entries.

2002-11-05  Paul Eggert  <eggert@twinsun.com>

        * src/scan-gram.l: Use more accurate diagnostics, e.g.
        "integer out of range" rather than "invalid value".
        * tests/input.at (Invalid $n, Invalid @n): Change expected wording
        accordingly.

        Scan <% and %> digraphs in C code as POSIX 1003.1-2001 requires.
        Also, remove one static variable in the scanner.

        * src/scan-gram.l (braces_level): Now auto, not static.
        Initialize to zero if the compiler is being picky.
        (INITIAL): Clear braces_level instead of incrementing it.
        (SC_BRACED_CODE): Treat <% and %> as { and } when inside C code,
        as POSIX 1003.1-2001 requires.
        * src/system.h (IF_LINT): New macro, taken from coreutils.
        * configure.ac: Define "lint" if --enable-gcc-warnings.

2002-11-05  Akim Demaille  <akim@epita.fr>

        * src/scan-gram.l: When it starts with `%', complain about the
        whole directive, not just that `invalid character: %'.

2002-11-04  Akim Demaille  <akim@epita.fr>

        * Makefile.maint: Update from Autoconf.
        (update, cvs-update, po-update, do-po-update): New.

2002-11-04  Akim Demaille  <akim@epita.fr>

        * tests/glr-regr1.at (Badly Collapsed GLR States): Prototype yylex
        and yyerror.
        Have yyerror `use' its arguments.
        * tests/calc.at (AT_CHECK_PUSHDEFS): AT_YYERROR_SEES_LOC_IF
        returns true when location & yacc & pure & parse-param.
        (_AT_DATA_CALC_Y): Let yyerror ``use'' its arguments.

2002-11-04  Akim Demaille  <akim@epita.fr>

        * src/location.h (LOCATION_PRINT): Use quotearg slot 3 to avoid
        clashes.
        * src/scan-gram.l: Use [\'] instead of ['] to pacify
        font-lock-mode.
        Use complain_at.
        Use quote, not quote_n since LOCATION_PRINT no longer uses the
        slot 0.

2002-11-03  Paul Eggert  <eggert@twinsun.com>

        * src/reader.c (get_merge_function, grammar_current_rule_check):
        Use consistent diagnostics for reporting type name clashes.
        Quote the types with <>, for consistency with Yacc.
        * tests/input.at (Type Clashes): Adjust to diagnostic changes.

2002-11-03  Akim Demaille  <akim@epita.fr>

        * data/c.m4 (b4_identification, b4_user_args, b4_parse_param):
        New.
        * data/yacc.m4 (b4_pure_args, b4_Pure_args): New.
        (b4_parse_param): Remove.
        Use b4_identification.
        Propagate b4_pure_args where needed to pass them to yyerror.
        * data/glr.m4 (b4_parse_param): Remove.
        (b4_user_formals, b4_pure_args, b4_pure_formals, b4_lpure_args)
        (b4_lpure_formals): New.
        Use b4_identification.
        (YY_USER_FORMALS, YY_USER_ARGS): Remove, replaced by
        b4_user_formals and b4_user_args.
        (yyexpandGLRStack, yyFail, yyaddDeferredAction, yyglrShiftDefer)
        (yyreportAmbiguity): When using a pure parser, also need
        the location, and the parse-params.
        Adjust callers.
        (yyuserAction, yyglrShift, yyreportParseError, yyrecoverParseError):
        When using a pure parser, also need the parse-params.
        Adjust callers.
        * tests/calc.at: Test pure (%pure-parser) and absolutely pure
        (%pure-parser + %parse-param) LALR and GLR parsers.
        (AT_CHECK_PUSHDEFS, AT_CHECK_POPDEFS): New, define AT_PARAM_IF,
        AT_LOCATION_IF, AT_PURE_IF, AT_GLR_IF, AAT_PURE_AND_LOC_IF,
        AT_GLR_OR_PARAM_IF, AT_YYERROR_ARG_LOC_IF, AT_YYERROR_SEES_LOC_IF.
        (_AT_DATA_CALC_Y): Equip for purity of yyerror.
        (_AT_CHECK_CALC_ERROR): Use AT_YYERROR_SEES_LOC_IF.
        * tests/cxx-type.at (_AT_TEST_GLR_CALC): Equip for yyerror purity.
        * doc/bison.texinfo: Untabify the whole file.
        (Parser Function): Document %parse-param, deprecate YYPARSE_PARAM.
        (Pure Calling): Document %lex-param, deprecate YYLEX_PARAM.
        (Error Reporting): Adjust to these new directives.
        Document %error-verbose, deprecate YYERROR_VERBOSE.

2002-11-03  Akim Demaille  <akim@epita.fr>

        * tests/calc.at: Change all the AT_CHECK_CALC_LALR and
        AT_CHECK_CALC_GLR invocations to use % directives, instead of
        command line options.
        * tests/cxx-type.at: Formatting changes.

2002-11-03  Paul Eggert  <eggert@twinsun.com>

        * src/scan-gram.l: Revamp to fix POSIX incompatibilities,
        to count columns correctly, and to check for invalid inputs.

        Use mbsnwidth to count columns correctly.  Account for tabs, too.
        Include mbswidth.h.
        (YY_USER_ACTION): Invoke extend_location rather than LOCATION_COLUMNS.
        (extend_location): New function.
        (YY_LINES): Remove.

        Handle CRLF in C code rather than in Lex code.
        (YY_INPUT): New macro.
        (no_cr_read): New function.

        Scan UCNs, even though we don't fully handle them yet.
        (convert_ucn_to_byte): New function.

        Handle backslash-newline correctly in C code.
        (SC_LINE_COMMENT, SC_YACC_COMMENT): New states.
        (eols, blanks): Remove.  YY_USER_ACTION now counts newlines etc.;
        all uses changed.
        (tag, splice): New EREs.  Do not allow NUL or newline in tags.
        Use {splice} wherever C allows backslash-newline.
        YY_STEP after space, newline, vertical-tab.
        ("/*"): BEGIN SC_YACC_COMMENT, not yy_push_state (SC_COMMENT).

        (letter, id): Don't assume ASCII; e.g., spell out a-z.

        ({int}, handle_action_dollar, handle_action_at): Check for integer
        overflow.

        (YY_STEP): Omit trailing semicolon, so that it's more like C.

        (<SC_ESCAPED_STRING,SC_ESCAPED_CHARACTER>): Allow \0 and \00
        as well as \000.  Check for UCHAR_MAX, not 255.
        Allow \x with an arbitrary positive number of digits, as in C.
        Check for overflow here.
        Allow \? and UCNs, for compatibility with C.

        (handle_symbol_code_dollar): Use quote_n slot 1 to avoid collision
        with quote slot used by complain_at.

        * tests/input.at: Add tests for backslash-newline, m4 quotes
        in symbols, long literals, and funny escapes in strings.

        * configure.ac (jm_PREREQ_MBSWIDTH): Add.
        * lib/Makefile.am (libbison_a_SOURCES): Add mbswidth.h, mbswidth.c.
        * lib/mbswidth.h, lib/mbswidth.c: New files, from GNU gettext.
        * m4/Makefile.am (EXTRA_DIST): Add mbswidth.m4.
        * m4/mbswidth.m4: New file, from GNU coreutils.

        * doc/bison.texinfo (Grammar Outline): Document // comments.
        (Symbols): Document that trigraphs have no special meaning in Bison,
        nor is backslash-newline allowed.
        (Actions): Document that trigraphs have no special meaning.

        * src/location.h (LOCATION_COLUMNS, LOCATION_LINES): Remove;
        no longer used.

2002-11-02  Paul Eggert  <eggert@twinsun.com>

        * src/reader.c: Don't include quote.h; not needed.
        (get_merge_function): Reword warning to be consistent with
        type clash diagnostic in grammar_current_rule_check.

        * lib/quotearg.c (quotearg_buffer_restyled): Fix off-by-two
        bug in trigraph handling.

        * src/output.c (prepare_symbols): When printing token names,
        escape "[" as "@<:@" and likewise for "]".

        * src/system.h (errno): Remove declaration, as we are now
        assuming C89 or better, and C89 guarantees errno.

2002-10-30  Paul Eggert  <eggert@twinsun.com>

        * lib/bitset_stats.c (bitset_stats_read, bitset_stats_write):
        Check for close failures.
        * src/files.h (xfclose): Return void, not int, since it always
        returned zero.
        * src/files.c (xfclose): Likewise.  Report I/O error if ferror
        indicates one.
        * src/output.c (output_skeleton): Use xfclose rather than fclose
        and ferror.  xfclose now checks ferror.

        * data/glr.c (YYLEFTMOST_STATE): Remove.
        (yyreportTree): Use a stack-based leftmost state.  This avoids
        our continuing battles with bogus warnings about initializers.

2002-10-30  Akim Demaille  <akim@epita.fr>

        * src/system.h: Don't use #ifdef/#ifndef on HAVE_ values, only
        #if.

2002-10-29  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>

        * tests/glr-regr1.at: New test for reported regressions.
        * tests/testsuite.at: Add glr-regr1.at test.
        * tests/Makefile.am: Add glr-regr1.at test.

2002-10-24  Paul Eggert  <eggert@twinsun.com>

        Version 1.75a.

        * tests/calc.at (_AT_DATA_CALC_Y): Remove unused strcat declaration.
        * tests/cxx-type.at (_AT_TEST_GLR_CALC): Include stdlib.h, since
        we use malloc.  Don't assume 'A' through 'Z' are contiguous.
        Don't assume strdup exists; POSIX says its an XSI extension.
        Check for buffer overflow on input.

2002-10-24  Akim Demaille  <akim@epita.fr>

        * src/output.c (output_skeleton): Don't disable M4sugar comments
        too soon: it results in comments being expanded.
        * data/yacc.c, data/glr.c, data/lalr1.cc: Do it right before the
        first output.

2002-10-24  Akim Demaille  <akim@epita.fr>

        * data/yacc.c (m4_int_type): New.
        * data/c.m4 (m4_int_type): Don't use yysigned_char, but `signed
        char' as only yacc.c wants K&R portability.
        * data/glr.c (yysigned_char): Remove.
        * data/lalr1.cc: Rename the trailing b4_name as b4_parser_class_name.
        Reported by Quoc Peyrot.

2002-10-23  Paul Eggert  <eggert@twinsun.com>

        * src/main.c (main): With --trace=time, report times even if a
        non-fatal error occurs.  Formerly, the times were reported in some
        such cases but not in others.
        * src/reader.c (reader): Just return if a complaint has been issued,
        instead of exiting, so that 'main' can report times.

2002-10-22  Akim Demaille  <akim@epita.fr>

        * src/system.h: Include sys/types.
        Reported by Bert Deknuydt.

2002-10-23  Paul Eggert  <eggert@twinsun.com>

        * configure.ac (AC_PROG_LEX): Use instead of AM_PROG_LEX.
        Suggested by Art Haas.

2002-10-22  Paul Eggert  <eggert@twinsun.com>

        * src/complain.c (exit) [! (STDC_HEADERS || _LIBC)]: Remove exit
        decl; not needed any more.
        * src/main.c (main): Use return to exit, undoing yesterday's change.
        The last OS that we could find where this wouldn't work is
        SunOS 3.5, and that's too old to worry about now.

        * data/glr.c (struct yyltype): Define members even when not
        doing locations.  This is more consistent with yacc.c, and it
        works around the following bug reports:
        http://mail.gnu.org/archive/html/bug-bison/2002-10/msg00106.html
        http://mail.gnu.org/archive/html/bug-bison/2002-10/msg00111.html

        * doc/bison.texinfo: Minor spelling and typographical fixes.  Use
        @acronym consistently.  Standardize on "Yacc" instead of "YACC",
        "Algol" instead of "ALGOL".  Give a bit more history about BNF.

2002-10-22  Akim Demaille  <akim@epita.fr>

        * data/README: New.

2002-10-21  Paul Eggert  <eggert@twinsun.com>

        Be consistent about 'bool'; the old code used an enum in one
        module and an int in another, and this violates the C standard.
        * m4/stdbool.m4: New file, from coreutils 4.5.3.
        * configure.ac (AC_HEADER_STDBOOL): Add.
        * m4/Makefile.am (EXTRA_DIST): Add stdbool.m4.
        * src/muscle_tab.c (hash_compare_muscles): (a ? FALSE : TRUE) -> (! a)
        * src/symtab.c (hash_compare_symbol_t): Likewise.
        * src/system.h (bool, false, true): Use a definition consistent
        with ../lib/hash.c.  All uses changed.

        * src/complain.c (warning_issued): Renamed from warn_message_count,
        so that we needn't worry about integer overflow (!).
        Now of type bool.  All uses changed.
        (complaint_issued): Renamed from complain_message_count; likewise.

        * src/main.c (main): Use exit to exit with failure.

        * src/complain.c (fatal_at, fatal): Use EXIT_FAILURE and EXIT_SUCCESS
        rather than 1 and 0.
        * src/main.c (main): Likewise.
        * src/getargs.c (getargs): Likewise.
        * src/reader.c (reader): Likewise.

        * src/getarg.c (getargs): Remove duplicate code for
        "Try `bison --help'".

        * src/files.c (xfopen, xfclose): Use EXIT_FAILURE rather than 2.
        What was that "2" for?

        * src/complain.h (fatal, fatal_at): Add __attribute__((__noreturn__)).
        * src/getargs.c (usage): Likewise.

        * src/getargs.c (getargs): When there are too few operands, report
        the last one.  When there are too many, report the first extra
        one.  This is how diffutils does it.

2002-10-20  Paul Eggert  <eggert@twinsun.com>

        Remove K&R vestiges.
        * configure.ac (AC_C_CONST, AM_C_PROTOTYPES): Remove.
        * src/complain.c (VA_START): Remove.  Assume prototypes.
        (vfprintf) [! (HAVE_VPRINTF || defined vfprintf)]: New macro.
        (private_strerror, warn_at, warn, complain_at, complain, fatal_at,
        fatal): Assume prototypes.
        * src/complain.h: Assume prototypes.
        * src/system.h (PARAMS): Remove.
        Include <limits.h> unconditionally, since it's guaranteeed even
        for a freestanding C89 compiler.
        (SHRT_MIN, SHRT_MAX): Remove, since C89 guarantees them.
        * src/vmsgetargs.c (getargs, cli_present, cli_get_value): Prototype.

2002-10-20  Akim Demaille  <akim@epita.fr>

        * src/muscle_tab.c (muscle_grow): Remove trailing debugging code.
        * data/glr.c (YY_USER_FORMALS, YY_USER_ARGS): New.
        (yyuserAction, yydoAction, yyglrReduce, yyresolveValue)
        (yyresolveStates, yyresolveAction, yyresolveStack)
        (yyprocessOneStack): Use them.
        (yy_reduce_print): New.
        * tests/calc.at (_AT_DATA_CALC_Y): Exercise %parse-param.

2002-10-20  Akim Demaille  <akim@epita.fr>

        * data/c.m4 (b4_c_ansi_args): Recognize functions with no
        arguments and output `void'.
        (b4_c_function): Rename as...
        (b4_c_function_def): this.
        (b4_c_function_decl, b4_c_ansi_function_def)
        (b4_c_ansi_function_decl): New.
        Change the interpretation of the arguments: before `int, foo', now
        `int foo, foo'.
        * data/yacc.c (yyparse): Prototype and define thanks to these.
        Adjust b4_c_function_def uses.
        * data/glr.c (yyparse): Likewise, but ANSI only.

2002-10-20  Akim Demaille  <akim@epita.fr>

        * src/output.c (prepare): Move the definition of `tokens_number',
        `nterms_number', `undef_token_number', `user_token_number_max'
        to...
        (prepare_tokens): Here.
        (prepare_tokens): Rename as...
        (prepare_symbols): this.
        (prepare): Move the definition of `rules_number' to...
        (prepare_rules): here.
        (prepare): Move the definition of `last', `final_state_number',
        `states_number' to...
        (prepare_states): here.
        * data/yacc.c, data/lalr1.cc, data/glr.c: Normalize `>' into `<'.

2002-10-20  Akim Demaille  <akim@epita.fr>

        * src/tables.h, src/tables.c, src/output.c: Comment changes.

2002-10-20  Akim Demaille  <akim@epita.fr>

        * data/yacc.c, data/yacc.c (b4_location_if, b4_pure_if): Move to...
        * data/c.m4: here.

2002-10-20  Akim Demaille  <akim@epita.fr>

        * src/output.c (prepare): Use MUSCLE_INSERT_STRING.
        * src/muscle_tab.c (muscle_pair_list_grow): Rename `val as
        `pair'.
        (muscle_init): Move the `b4_ltype', `b4_maxdepth', `b4_initdepth',
        `name' to...
        * data/glr.c, data/lalr1.cc, data/yacc.c (b4_location_type)
        (b4_stack_depth_init, b4_stack_depth_max, b4_parser_class_name):
        These.

2002-10-19  Paul Eggert  <eggert@twinsun.com>

        Do not create a temporary file, as that involves security and
        cleanup headaches.  Instead, use a pair of pipes.
        Derived from a suggestion by Florian Krohm.
        * lib/subpipe.c, lib/subpipe.h, m4/subpipe.m4: New files.
        * lib/mkstemp.c, lib/readpipe.c, lib/tempname.c, m4/mkstemp.m4: Remove.
        * configure.ac (UTILS_FUNC_MKSTEMP, jm_PREREQ_TEMPNAME): Remove.
        (BISON_PREREQ_SUBPIPE): Add.
        * lib/Makefile.am (libbison_a_SOURCES): Remove readpipe.c.
        Add subpipe.h, subpipe.c.
        * m4/Makefile.am (EXTRA_DIST): Remove mkstemp.m4.  Add subpipe.m4.
        * po/POTFILES.in: Add lib/subpipe.c.
        * src/output.c: Include "subpipe.h".
        (m4_invoke): Remove decl.
        (scan_skel): New decl.
        (output_skeleton): Use pipe rather than temporary file for m4 input.
        Check that m4sugar.m4 is readable, to avoid deadlock.
        Check for pipe I/O error.
        * src/scan-skel.l (readpipe): Remove decl.
        (scan_skel): New function, to be used in place of m4_invoke.
        Read from stream rather than file.

        * lib/timevar.c (TICKS_TO_MSEC, CLOCKS_TO_MSEC): Do not cast to
        float, as this generates a warning on Solaris 8 + GCC 3.2 with
        --enable-gcc-warnings.  Instead, divide into 1.0 rather than 1;
        this generates a more-accurate value anyway.

        * lib/timevar.c (timervar_accumulate): Rename locals to
        avoid confusion with similarly-named more-global.
        * src/muscle_tab.c (muscle_pair_list_grow): Likewise.

        * src/output.c (prepare): Use xstrdup to convert char const *
        to char *, to avoid GCC warning.

2002-10-19  Akim Demaille  <akim@epita.fr>

        * tests/calc.at (_AT_DATA_CALC_Y): Define VAL, LOC, LEX_FORMALS,
        LEX_PRE_FORMALS, LEX_ARGS, LEX_PRE_ARGS, USE_LEX_ARGS.
        Use them to have `calc.y' ready for %pure-parser.
        * data/yacc.c (YYLEX): Pass a yylex return type to
        b4_c_function_call.

2002-10-19  Akim Demaille  <akim@epita.fr>

        Prototype support of %lex-param and %parse-param.

        * src/parse-gram.y: Add the definition of the %lex-param and
        %parse-param tokens, plus their rules.
        Drop the `_' version of %glr-parser.
        Add the "," token.
        * src/scan-gram.l (INITIAL): Scan them.
        * src/muscle_tab.c: Comment changes.
        (muscle_insert, muscle_find): Rename `pair' as `probe'.
        * src/muscle_tab.h (MUSCLE_INSERT_PREFIX): Remove unused.
        (muscle_entry_s): The `value' member is no longer const.
        Adjust all dependencies.
        * src/muscle_tab.c (muscle_init): Adjust: use
        MUSCLE_INSERT_STRING.
        Initialize the obstack earlier.
        * src/muscle_tab.h, src/muscle_tab.c (muscle_grow)
        (muscle_pair_list_grow): New.
        * data/c.m4 (b4_c_function_call, b4_c_args): New.
        * data/yacc.c (YYLEX): Use b4_c_function_call to honor %lex-param.
        * tests/calc.at: Use %locations, not --locations.
        (AT_CHECK_CALC_GLR): Use %glr-parser, not %glr_parser.

2002-10-19  Akim Demaille  <akim@epita.fr>

        * src/getargs.c (usage): Take status as argument and exit
        accordingly.
        Report the traditional `Try ... --help' message when status != 0.
        (usage, version): Don't take a FILE * as arg, it is pointless.
        (getargs): When there is an incorrect number of arguments, make it
        an error, and report it GNUlically thanks to `usage ()'.

2002-10-18  Paul Eggert  <eggert@twinsun.com>

        * data/glr.c (yyreportParseError): Don't assume that sprintf
        yields the length of the printed string, as this is not true
        on SunOS 4.1.4.  Reported by Peter Klein.

        * tests/calc.at (_AT_DATA_CALC_Y): #undef memcmp and realloc.
        * tests/conflicts.at (%nonassoc and eof): Likewise.
        Fixes SunOS 4.1.4 test failure reported by Peter Klein.

2002-10-17  Akim Demaille  <akim@epita.fr>

        * src/getargs.h (trace_e): Add trace_scan, and trace_parse.
        * src/getargs.c (trace_types, trace_args): Adjust.
        * src/reader.c (grammar_current_rule_prec_set)
        (grammar_current_rule_dprec_set, grammar_current_rule_merge_set):
        Standardize error messages.
        And s/@prec/%prec/!
        (reader): Use trace_flag to enable scanner/parser debugging,
        instead of an adhoc scheme.
        * src/scan-gram.l: Remove trailing debugging code.

2002-10-16  Paul Eggert  <eggert@twinsun.com>

        * src/muscle_tab.h (MUSCLE_TAB_H_): Was misspelled as
        MUSCLE_TAB_H.

        * NEWS: Officially drop support for building Bison with K&R C,
        since it didn't work anyway and it's not worth worrying about.
        * Makefile.maint (wget_files): Remove ansi2knr.c.
        (ansi2knr.c-url_prefix): Remove.
        * lib/.cvsignore: Remove ansi2knr, ansi2knr.*.
        * lib/Makefile.am (AUTOMAKE_OPTIONS): Remove.
        * src/Makefile.am (AUTOMAKE_OPTIONS): Remove.

2002-10-15  Paul Eggert  <eggert@twinsun.com>

        Stop using the "enum_" trick for K&R-style function definitions;
        it confused me, and I was the author!  Instead, assume that people
        who want to use K&R C compilers (when using these modules in GCC,
        perhaps?) will run ansi2knr.

        * lib/bbitset.h: (enum_bitset_ops, enum_bitset_type): Remove.
        All uses of "enum_" changed to "enum ".
        * lib/ebitset.c (enum_ebitset_find_mode): Likewise.
        * lib/lbitset.c (enum_lbitset_find_mode): Likewise.

        * lib/abitset.c (abitset_and, abitset_and_cmp, abitset_and_or,
        abitset_and_or_cmp, abitset_andn, abitset_andn_cmp,
        abitset_andn_or, abitset_andn_or_cmp, abitset_bytes, abitset_copy,
        abitset_copy1, abitset_disjoint_p, abitset_empty_p,
        abitset_equal_p, abitset_init, abitset_list, abitset_list_reverse,
        abitset_not, abitset_ones, abitset_or, abitset_or_and,
        abitset_or_and_cmp, abitset_or_cmp, abitset_reset, abitset_set,
        abitset_size, abitset_small_list, abitset_subset_p, abitset_test,
        abitset_unused_clear, abitset_xor, abitset_xor_cmp, abitset_zero):
        Use function prototypes; this removes the need for declaring
        static functions simply to provide their prototypes.
        * lib/bitset.c (bitset_alloc, bitset_and_or_, bitset_and_or_cmp_,
        bitset_andn_or_, bitset_andn_or_cmp_, bitset_bytes, bitset_copy_,
        bitset_count_, bitset_create, bitset_dump, bitset_first,
        bitset_free, bitset_init, bitset_last, bitset_next,
        bitset_obstack_alloc, bitset_obstack_free, bitset_only_set_p,
        bitset_op4_cmp, bitset_or_and_, bitset_or_and_cmp_, bitset_prev,
        bitset_print, bitset_release_memory, bitset_toggle_,
        bitset_type_choose, bitset_type_get, bitset_type_name_get,
        debug_bitset): Likewise.
        * lib/bitset.h (bitset_set, bitset_reset, bitset_test): Likewise.
        * lib/bitset_stats.c (bitset_log_histogram_print,
        bitset_percent_histogram_print, bitset_stats_and,
        bitset_stats_and_cmp, bitset_stats_and_or,
        bitset_stats_and_or_cmp, bitset_stats_andn, bitset_stats_andn_cmp,
        bitset_stats_andn_or, bitset_stats_andn_or_cmp, bitset_stats_copy,
        bitset_stats_count, bitset_stats_disable, bitset_stats_disjoint_p,
        bitset_stats_dump, bitset_stats_empty_p, bitset_stats_enable,
        bitset_stats_equal_p, bitset_stats_free, bitset_stats_init,
        bitset_stats_list, bitset_stats_list_reverse, bitset_stats_not,
        bitset_stats_ones, bitset_stats_or, bitset_stats_or_and,
        bitset_stats_or_and_cmp, bitset_stats_or_cmp, bitset_stats_print,
        bitset_stats_print_1, bitset_stats_read, bitset_stats_reset,
        bitset_stats_set, bitset_stats_size, bitset_stats_subset_p,
        bitset_stats_test, bitset_stats_toggle, bitset_stats_type_get,
        bitset_stats_write, bitset_stats_xor, bitset_stats_xor_cmp,
        bitset_stats_zero): Likewise.
        * lib/bitsetv.c (bitsetv_alloc, bitsetv_create, bitsetv_free,
        bitsetv_zero, bitsetv_ones, bitsetv_transitive_closure,
        bitsetv_dump, debug_bitsetv): Likewise.
        * lib/ebitset.c (ebitset_and, ebitset_and_cmp, ebitset_andn,
        ebitset_andn_cmp, ebitset_bytes, ebitset_copy, ebitset_copy_,
        ebitset_copy_cmp, ebitset_disjoint_p, ebitset_elt_add,
        ebitset_elt_alloc, ebitset_elt_calloc, ebitset_elt_find,
        ebitset_elt_free, ebitset_elt_last, ebitset_elt_remove,
        ebitset_elt_zero_p, ebitset_elts_grow, ebitset_empty_p,
        ebitset_equal_p, ebitset_free, ebitset_init, ebitset_list,
        ebitset_list_reverse, ebitset_not, ebitset_ones, ebitset_op3_cmp,
        ebitset_or, ebitset_or_cmp, ebitset_release_memory, ebitset_reset,
        ebitset_set, ebitset_size, ebitset_subset_p, ebitset_test,
        ebitset_weed, ebitset_xor, ebitset_xor_cmp, ebitset_zero):
        Likewise.
        * lib/lbitset.c (debug_lbitset, lbitset_and, lbitset_and_cmp,
        lbitset_andn, lbitset_andn_cmp, lbitset_bytes, lbitset_copy,
        lbitset_copy_cmp, lbitset_disjoint_p, lbitset_elt_alloc,
        lbitset_elt_calloc, lbitset_elt_find, lbitset_elt_free,
        lbitset_elt_link, lbitset_elt_unlink, lbitset_elt_zero_p,
        lbitset_empty_p, lbitset_equal_p, lbitset_free, lbitset_init,
        lbitset_list, lbitset_list_reverse, lbitset_not, lbitset_ones,
        lbitset_op3_cmp, lbitset_or, lbitset_or_cmp, lbitset_prune,
        lbitset_release_memory, lbitset_reset, lbitset_set, lbitset_size,
        lbitset_subset_p, lbitset_test, lbitset_weed, lbitset_xor,
        lbitset_xor_cmp, lbitset_zero): Likewise.

2002-10-14  Akim Demaille  <akim@epita.fr>

        Version 1.75.

2002-10-14  Akim Demaille  <akim@epita.fr>

        * tests/Makefile.am (maintainer-check-posix): New.

2002-10-14  Akim Demaille  <akim@epita.fr>

        * data/glr.c [YYDEBUG] (YYLEFTMOST_STATE): Initialize the yyloc
        member.

2002-10-14  Akim Demaille  <akim@epita.fr>

        * src/tables.c (table_ninf_remap): base -> tab.
        Reported by Matt Rosing.

2002-10-14  Paul Eggert  <eggert@twinsun.com>

        * tests/action.at, tests/calc.at, tests/conflicts.at,
        tests/cxx-type.at, tests/headers.at, tests/input.at,
        tests/regression.at, tests/synclines.at, tests/torture.at:
        Say "bison -o foo.c foo.y", not "bison foo.y -o foo.c",
        so that the tests still work even if POSIXLY_CORRECT is set.
        * doc/bison.texinfo (Rpcalc Compile, Invocation): Likewise.

        * data/c.m4 (b4_int_type): Use yysigned_char instead of signed char,
        for portability to K&R hosts.  Fix typo: signed char is guaranteed
        only to 127, not to 128.
        * data/glr.c (yysigned_char): New type.
        * data/yacc.c (yysigned_char): Likewise.
        * tests/regression.at (Web2c Actions): signed char -> yysigned_char.

2002-10-13  Paul Eggert  <eggert@twinsun.com>

        * data/yacc.c (yyparse): Rewrite to avoid "comparison is always
        true due to limited range of data type" warning from GCC.

        * data/c.m4 (b4_token_defines): Protect against double-inclusion
        by wrapping enum yytokentype's definition inside #ifndef
        YYTOKENTYPE.  This undoes a bug I introduced on 2002-10-12.

2002-10-13  Akim Demaille  <akim@epita.fr>

        * data/glr.c (yyglrShiftDefer, yyaddDeferredAction, yydoAction):
        Un yy- yyrhs to avoid the name clash with the global YYRHS.

2002-10-13  Akim Demaille  <akim@epita.fr>

        * Makefile.maint: Update from Autoconf 2.54.
        * m4/strerror_r.m4 (AC_FUNC_STRERROR_R): Remove, shipped with 2.54.

2002-10-13  Akim Demaille  <akim@epita.fr>

        * src/print.c (print_state): Separate the list of solved conflicts
        from the other items.
        * tests/conflicts.at (Resolved SR Conflicts): Adjust.

2002-10-13  Akim Demaille  <akim@epita.fr>

        Let nondeterministic skeletons be usable with deterministic
        tables.

        With the patch, GAWK compiled by GCC without -O2 passes its test
        suite using a GLR parser driven by LALR tables.  It fails with -O2
        because `struct stat' gives two different answers on my machine:
        88 (definition of an auto var) and later 96 (memset on this var).
        Hence the stack is badly corrumpted.  The headers inclusion is to
        blame: if I move the awk.h inclusion before GLR's system header
        inclusion, the two struct stat have the same size.

        * src/tables.c (pack_table): Always create conflict_table.
        (token_actions): Always create conflict_list.
        * data/glr.c (YYFLAG): Remove, unused.

2002-10-13  Akim Demaille  <akim@epita.fr>

        * configure.ac (AC_GNU_SOURCE): Use it instead of hand written code.
        (O0FLAGS): New.
        (VALGRIND, GXX): New.
        * tests/atlocal.in (CFLAGS): Use O0FLAGS.
        * tests/bison.in: Run $PREBISON a pre-command.
        * tests/Makefile.am (maintainer-check, maintainer-check-valgrind)
        (maintainer-check-g++): New.
        * Makefile.am (maintainer-check): New.

2002-10-13  Akim Demaille  <akim@epita.fr>

        * data/glr.c: Formatting changes.
        Tweak some trace messages to match yacc.c's.

2002-10-13  Akim Demaille  <akim@epita.fr>

        GLR parsers sometimes raise parse errors instead of performing the
        default reduction.
        Reported by Charles-Henry de Boysson.

        * tests/calc.at (_AT_CHECK_CALC, _AT_CHECK_CALC_ERROR): Don't
        check the length of the traces when %glr.
        (_AT_CHECK_CALC_ERROR): Also skip `^Stack' lines, coming from
        GLR's traces.
        (AT_CHECK_CALC_LALR, AT_CHECK_CALC_GLR): New.
        Test GLR parsers.
        * data/glr.c (YYLEFTMOST_STATE): Fix its value.
        (yyltype): Remove the yy prefix from the member names.
        (yytable): Complete its comment.
        (yygetLRActions): Map error action number from YYTABLE from
        YYTABLE_NINF to 0.
        (yyisErrorAction): No longer compare YYACTION to YYPACT_NINF
        (which was a bug: it should have been YYTABEL_NINF, and yet it was
        not satisfying as we could compare an YYACTION computed from
        YYDEFACT to YYTABLE_NINF although they are unrelated): 0 is the
        only value for error actions.
        (yyreportParseError): In verbose parse error messages, don't issue
        `error' in the list of expected tokens.
        * data/yacc.c (yyparse) <yybackup>: Rewrite the decoding of the
        next action to perform to match glr.c's decoding.
        (yytable): Complete its comment.

2002-10-13  Paul Eggert  <eggert@twinsun.com>

        Fix problem reported by Henrik Grubbstroem in
        <http://mail.gnu.org/archive/html/bug-bison/2002-10/msg00098.html>:
        "nonterm: { $$ = 123; } { $$ = $1; };" was wrongly rejected,
        because the Bison parser reads the second action before reducing
        the first one.
        * src/scan-gram.l (rule_length): New static var.
        Use it to keep track of the rule length in the scanner, since
        we can't expect the parser to be in lock-step sync with the scanner.
        (handle_action_dollar, handle_action_at): Use this var.
        * tests/actions.at (Exotic Dollars): Test for the problem.

2002-10-12  Paul Eggert  <eggert@twinsun.com>

        * lib/timevar.c [! IN_GCC && HAVE_SYS_TIME_H]: Include <sys/time.h>.
        * m4/timevar.m4 (BISON_PREREQ_TIMEVAR): Check for <sys/time.h>.
        Include <sys/time.h> when checking for clock_t and struct tms.
        Use same include order as source.
        This is for the SunOS 4.1.4 porting bug reported by Peter Klein in
        <http://mail.gnu.org/archive/html/bug-bison/2002-10/msg00016.html>.

        * lib/timevar.c: Update copyright date and clarify comments.
        (get_time) [IN_GCC]: Keep the GCC version for reference.

        * lib/timevar.c, lib/timevar.h, lib/timevar.def: Import
        GCC version as of today, then merge Bison's changes.
        Change "GCC" to "Bison" in copyright notice.  timevar.def's
        author is Akim, so change that too.

        * src/reader.c (grammar_current_rule_check):
        Don't worry about the default action if $$ is untyped.
        Prevents bogus warnings reported by Jim Gifford in
        <http://mail.gnu.org/archive/html/bug-bison/2002-10/msg00015.html>.

        * data/c.m4 (b4_token_enum): Do not define YYTOKENTYPE.
        * data/glr.c, data/lalr1.cc, data/yacc.c:
        Output token definitions before the first part of user declarations.
        Fixes compatibility problem reported by Jim Gifford for kbd in
        <http://mail.gnu.org/archive/html/bug-bison/2002-10/msg00014.html>.

2002-10-11  Paul Eggert  <eggert@twinsun.com>

        * data/yacc.c (yyreport_parse_error): Remove, putting its body into...
        (yyparse): here.  This undoes some of the 2002-07-25 change.
        Compatibility problem reported by Ralf S. Engelschall with
        OSSP cfg <http://www.ossp.org/pkg/lib/cfg/>.

2002-10-11  Akim Demaille  <akim@epita.fr>

        * tests/regression.at Characters Escapes): New.
        * src/scan-gram.l (SC_ESCAPED_CHARACTER): Accept \' in strings and
        characters.
        Reported by Jan Nieuwenhuizen.

2002-10-11  Akim Demaille  <akim@epita.fr>

        * po/id.po: New.

2002-10-10  Paul Eggert  <eggert@twinsun.com>

        Portability fixes for bitsets; this also avoids several GCC
        warnings.

        * lib/abitset.c: Include <stddef.h>, for offsetof.
        * lib/lbitset.c: Likewise.

        * lib/abitset.c (abitset_bytes): Return a size that is aligned
        properly for vectors of objects.  Do not assume that adding a
        header size to a multiple of a word size yields a value that is
        properly aligned for the whole union.
        * lib/bitsetv.c (bitsetv_alloc): Likewise.

        * lib/bitset_stats.c (bitset_stats_bytes): Adjust to new,
        unique names for structures.
        * lib/ebitset.c (ebitset_bytes): Likewise.
        * lib/lbitset.c (lbitset_bytes): Likewise.

        * lib/abitset.c (abitset_ones, abitset_zero, abitset_empty_p,
        abitset_copy1, abitset_not, abitset_equal_p, abitset_subset_p,
        abitset_disjoint_p, abitset_and, abitset_and_cmp, abitset_andn,
        abitset_andn_cmp, abitset_or, abitset_or_cmp, abitset_xor,
        abitset_xor_cmp, abitset_and_or, abitset_and_or_cmp,
        abitset_andn_or, abitset_andn_or_cmp, abitset_or_and,
        abitset_or_and_cmp, abitset_copy): Supply prototype decls,
        to improve the type-checking that GCC can do.
        * lib/bitset.c (bitset_op4_cmp): Likewise.
        * lib/bitset_stats.c (bitset_stats_count,
        bitset_stats_empty_p, bitset_stats_ones, bitset_stats_zero,
        bitset_stats_copy, bitset_stats_disjoint_p,
        bitset_stats_equal_p, bitset_stats_not, bitset_stats_subset_p,
        bitset_stats_and, bitset_stats_and_cmp, bitset_stats_andn,
        bitset_stats_andn_cmp, bitset_stats_or, bitset_stats_or_cmp,
        bitset_stats_xor, bitset_stats_xor_cmp, bitset_stats_and_or,
        bitset_stats_and_or_cmp, bitset_stats_andn_or,
        bitset_stats_andn_or_cmp, bitset_stats_or_and,
        bitset_stats_or_and_cmp): Likewise.
        * lib/lbitset.c (lbitset_and, lbitset_and_cmp, lbitset_andn,
        lbitset_andn_cmp, lbitset_or, lbitset_or_cmp, lbitset_xor,
        lbitset_xor_cmp, lbitset_empty_p, lbitset_ones, lbitset_not,
        lbitset_subset_p, lbitset_disjoint_p, debug_lbitset): Likewise.

        * lib/abitset.h: Include bitset.h, not bbitset.h.
        * lib/ebitset.h: Likewise.
        * lib/lbitset.h: Likewise.

        * lib/bbitset.h: (enum_bitset_ops, enum_bitset_type): New types.
        All instances of parameters of type enum bitset_opts are now of
        type enum_bitset_opts, to conform to the C Standard, and similarly
        for enum_bitset_type.
        * lib/ebitset.c (enum_ebitset_find_mode): Likewise.
        * lib/lbitset.c (enum_lbitset_find_mode): Likewise.

        Do not use "struct bitset_struct" to mean different things in
        different modules.  Not only is this confusing, it violates
        the C Standard, which requires that structure types in different
        modules must be compatible if one is to be passed to the other.
        * lib/bbitset.h (bitset): Now points to a union, not to a struct.
        All instances of "struct bitset_struct *" replaced with "bitset".
        * lib/bitset.h (struct bitset_struct): Remove, replacing with....
        (union bitset_union, struct abitset_struct, struct ebitset_struct,
        struct lbitset_struct, struct bitset_stats_struct): New types.
        All uses of struct bitset_struct changed to union bitset_union,
        etc.
        * lib/abitset.c (struct abitset_struct, abitset,
        struct bitset_struct): Remove.
        * lib/bitset_stats.c (struct bitset_stats_struct, bitset_stats,
        struct bitset_struct): Remove.
        * lib/ebitset.c (struct ebitset_struct, ebitset, struct
        bitset_struct): Remove.
        * lib/lbitset.c (struct lbitset_struct, lbitset, bitset_struct):
        Likewise.

        Do not call a function of type T using a call that assumes the
        function is of a different type U.  Standard C requires that a
        function must be called with a type that is compatible with its
        definition.
        * lib/bbitset.h (bitset_and_or_, bitset_andn_or_, bitset_or_and_):
        New decls.
        * lib/bitset.c (bitset_and_or_, bitset_andn_or_, bitset_or_and_):
        New functions.
        * lib/ebitset.c (PFV): Remove.
        * lib/lbitset.c (PFV): Likewise.
        * lib/ebitset.c (ebitset_and, ebitset_andn, ebitset_or,
        ebitset_xor, ebitset_copy, ebitset_ones, ebitset_empty_p): New
        decls.
        (ebitset_and, ebitset_andn, ebitset_or, ebitset_xor): New functions.
        (ebitset_vtable): Use them.
        * lib/lbitset.c (lbitset_and, lbitset_andn, lbitset_or,
        lbitset_xor): New functions.
        (lbitset_vtable): Use them.

        * lib/bitset.h (bitset_next, bitset_prev, bitset_only_set_p):
        Declare.

        * lib/bitsetv.c (bitsetv_alloc): Add a cast to (void *) to avoid a
        GCC warning.
        * lib/lbitset.c (LBITSET_CURRENT1): Likewise.
        Use offsetof, for simplicity.

2002-10-06  Paul Eggert  <eggert@twinsun.com>

        * lib/bitset.h (bitset_reset): Do not assume that bitset_word is
        the same width as int.  This reapplies a hunk of the 2002-08-12 patch
        <http://mail.gnu.org/archive/html/bison-patches/2002-08/msg00007.html>,
        which was inadvertently undone by the 2002-09-30 patch.
        * lib/lbitset.c (debug_lbitset): Do not assume that bitset_word is
        the same width as int.

2002-10-04  Paul Eggert  <eggert@twinsun.com>

        Version 1.50.

        * configure.ac (AC_INIT), NEWS: Increment version number.

        * doc/bison.texinfo: Minor spelling, grammar, and white space
        fixes.
        (Symbols): Mention that any negative value returned from yylex
        signifies end-of-input.  Warn about negative chars.  Mention
        the portable Standard C character set.

        The GNU coding standard says CFLAGS and YFLAGS are reserved
        for the installer to set.
        * lib/Makefile.am (AM_CFLAGS): Renamed from CFLAGS.
        * src/Makefile.am (AM_CFLAGS): Likewise.
        (AM_YFLAGS): Renamed from YFLAGS.

        Fix some MAX and MIN problems.
        * src/gram.h (ITEM_NUMBER_MIN): MIN_MAX -> INT_MIN.
        * src/lalr.h (GOTO_NUMBER_MAX): INT_MAX -> SHRT_MAX.
        * src/symtab.h (SYMBOL_NUMBER_MAX): New macro.
        * src/reader.c (reader): Use it.

        * tests/regression.at (Braces parsing): Use grep, not fgrep, as
        POSIX 1003.1-2001 has removed fgrep.

2002-10-04  Michael Hayes  <m.hayes@elec.canterbury.ac.nz>

        * lib/bbitset.h (BITSET_WINDEX_MAX): Redefine so that it cannot be
        interpreted as signed.
        * lib/ebitset.c (ebitset_list): Fix bug.

2002-10-01  Paul Eggert  <eggert@twinsun.com>

        More fixes for 64-bit hosts and large bitsets.

        * lib/abitset.c (struct abitset_struct.n_bits, abitset_small_list,
        abitset_size, abitset_list, abitset_list_reverse, abitset_list):
        Use bitset_bindex, not int or unsigned int or size_t, to count bits.
        * lib/bbitset.h (struct bitset_vtable.size, struct bitset_vtable.count,
        struct bitset_vtable.list, struct bitset_vtable.list_reverse,
        bitset_count_, bitset_next, bitset_prev, bitset_first, bitset_last,
        bitset_count_): Likewise.
        * lib/bitset.h (bitset_iterator.num, bitset_iterator.i,
        bitset_first, bitset_last): Likewise.
        * lib/bitset_stats.c (bitset_stats_size, bitset_stats_list,
        bitset_stats_list_reverse, bitset_stats_size,
        bitset_stats_count, bitset_stats_list, bitset_stat_list_reverse):
        Likewise.
        * lib/bitsetv-print.c (bitsetv_matrix_dump): Likewise.
        * lib/bitsetv.c (bitsetv_alloc, bitsetv_create, bitsetv_free,
        bitsetv_zero, bitsetv_ones, bitsetv_transitive_closure,
        bitsetv_reflexive_transitive_closure): Likewise.
        * lib/bitsetv.h (bitsetv_alloc, bitsetv_create): Likewise.
        * lib/ebitset.c (ebitset_size, ebitset_list, ebitset_list_reverse):
        Likewise.
        * lib/lbitset.c (lbitset_size, lbitset_list, lbitset_list_merge):
        Likewise.

        * lib/abitset.c (abitset_ones, abitset_zero, abitset_bytes):
        Use size_t, not unsigned int, to count bytes.
        * lib/abitset.h (abitset_bytes): Likewise.
        * lib/bitset.c (bitset_bytes, bitset_alloc, bitset_obstack_alloc):
        Likewise.
        * lib/bitset.h (bitset_bytes): Likewise.
        * lib/bitset_stats.c (bitset_stats_bytes, bitset_stats_init): Likewise.
        * lib/bitset_stats.h (bitset_stats_bytes): Likewise.
        * lib/bitsetv.c (bitsetv_alloc): Likewise.
        * lib/ebitset.c (ebitset_bytes): Likewise.
        * lib/ebitset.h (ebitset_bytes): Likewise.
        * lib/lbitset.c (lbitset_bytes): Likewise.
        * lib/lbitset.h (lbitset_bytes): Likewise.

        * lib/abitset.c (abitset_empty_p, abitset_not, abitset_equal_p,
        abitset_subset_p, abitset_disjoint_p, abitset_and,
        abitset_and_cmp, abitset_andn, abitset_andn_cmp, abitset_or,
        abitset_or_cmp, abitset_xor, abitset_xor_cmp, abitset_and_or,
        abitset_and_or_cmp, abitset_andn_or, abitset_andn_or_cmp,
        abitset_or_and, abitset_or_and_cmp):
        Use bitset_windex instead of unsigned int.
        * lib/bitsetv.c (bitsetv_dump, debug_bitsetv): Likewise.
        * lib/ebitset.c (struct ebitset_struct.size, ebitset_elts_grow,
        ebitset_elt_add, ebitset_elt_remove, ebitset_weed,
        ebitset_elt_find, ebitset_list_reverse, ebitset_list, ebitset_init):
        Likewise.
        * lib/lbitset.c (lbitset_ones, lbitset_not): Likewise.

        * lib/bitset.c (bitset_print):
        Use proper printf formats for widths of integer types.
        * lib/bitset_stats.c (bitset_percent_histogram_print,
        bitset_log_histogram_print, bitset_stats_print_1): Likewise.
        * lib/bitsetv-print.c (bitsetv_matrix_dump): Likewise.
        * lib/bitsetv.c (bitsetv_dump, debug_bitsetv): Likewise.
        * lib/lbitset.c (lbitset_bytes): Likewise.

        * lib/bbitset.h (BITSET_BINDEX_MAX, BITSET_WINDEX_MAX,
        BITSET_SIZE_MAX): New macros.
        (BITSET_INDEX_MAX): Remove.  It wasn't right, since it assumed that
        sizeof (bitset_word) == sizeof (bitset_windex).  All uses changed
        to BITSET_WINDEX_MAX.

        * lib/bitset.c (bitset_next, bitset_prev, bitset_first,
        bitset_last): Return BITSET_BINDEX_MAX (not -1) for no value,
        since we now return the bitset_bindex type (not int).

        * lib/bitsetv.c (bitsetv_alloc): Check for arithmetic overflow
        when computing sizes.
        * lib/ebitset.c (ebitset_elts_grow): Likewise.

        * lib/lbitset.c (lbitset_elt_find): Simplify windex calculation
        and avoid cast to unsigned.

2002-09-30  Akim Demaille  <akim@epita.fr>

        * lib/abitset.c, lib/bbitset.h, lib/bitset.c, lib/bitset.h,
        * lib/bitset_stats.c, lib/bitsetv.c, lib/ebitset.c, lib/lbitset.c:
        Updates from Michael Hayes.

2002-09-30  Art Haas  <ahaas@neosoft.com>

        * configure.ac: Update AC_OUTPUT and AM_CONFIG_HEADER
        invocations.
        * tests/cxx-type.at (declarator): Don't rely on NDEBUG being not
        defined.

2002-09-27  Akim Demaille  <akim@epita.fr>

        Version 1.49c.

2002-09-27  Akim Demaille  <akim@epita.fr>

        * configure.ac (AM_INIT_AUTOMAKE): We _need_ 1.7.
        (Because of AC_LIBSOURCE).

2002-09-27  Akim Demaille  <akim@epita.fr>

        Playing with Autoscan.

        * configure.ac: Remove the old LIBOBJ tweaks.
        (AC_REPLACE_FUNCS): Add strrchr and strtol.
        * lib/strrchr.c: New.
        * lib/strtol.c: New, from the Coreutils 4.5.1.

2002-09-27  Akim Demaille  <akim@epita.fr>

        Playing with Autoscan.

        * m4/prereq.m4 (jm_PREREQ_ARGMATCH, jm_FUNC_ARGMATCH): New.
        * lib/Makefile.am (libbison_a_SOURCES): No longer include
        argmatch.c and argmatch.h, since they are AC_LIBSOURCE'd.
        * lib/strcasecmp.c, lib/strncasecmp.c, lib/memcmp.c: New, from the
        Coreutils 4.5.1.

2002-09-24  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo (Stack Overflow): xref to Recursion.
        (Frequently Asked Questions, Parser Stack Overflow): New.

2002-09-13  Akim Demaille  <akim@epita.fr>

        Playing with autoscan.

        * src/reader.c (get_merge_function): Use xstrdup, not strdup.
        * src/files.c (skeleton_find): Remove, unused.
        * m4/memcmp.m4: New, from the Coreutils 4.5.1.
        * m4/prereq.m4 (jm_PREREQ_QUOTEARG): Run jm_FUNC_MEMCMP.

2002-09-13  Akim Demaille  <akim@epita.fr>

        * configure.ac (AM_INIT_AUTOMAKE): Require Automake 1.6.3.
        * Makefile.am (AUTOMAKE_OPTIONS): Don't.

2002-09-13  Akim Demaille  <akim@epita.fr>

        * configure.ac: Require 2.54.
        s/jm_FUNC_MALLOC/AC_FUNC_MALLOC/.
        s/jm_FUNC_REALLOC/AC_FUNC_REALLOC/.
        * m4/c-bs-a.m4, m4/malloc.m4, m4/mbstate_t.m4, m4/realloc.m4:
        Remove, provided by Autoconf macros.

2002-09-12  Akim Demaille  <akim@epita.fr>

        * m4/prereq.m4: Update, from Coreutils 4.5.1.

2002-09-12  Akim Demaille  <akim@epita.fr>

        * m4/prereq.m4: Update, from Fileutils 4.1.5.
        * configure.ac (jm_PREREQ_TEMPNAME): Invoke it.
        Reported by Martin Mokrejs.

2002-09-10  Akim Demaille  <akim@epita.fr>

        * src/parse-gram.y: Associate a human readable string to each
        token type.
        * tests/regression.at (Invalid inputs): Adjust.

2002-09-10  Gary V. Vaughan  <gary@gnu.org>

        * tests/Makefile.am ($(srcdir)/package.m4): Bison now ships
        with an Autoconf-2.5x style configure.ac.

2002-09-06  Paul Eggert  <eggert@twinsun.com>

        * doc/bison.texinfo (Conditions): Make explicit that the GPL
        exception applies only to yacc.c.  This is a modification of a
        patch originally suggested by Akim Demaille.

2002-09-06  Akim Demaille  <akim@epita.fr>

        * data/c.m4 (b4_copyright): Move the GPL exception comment from
        here to...
        * data/yacc.c: here.

        * data/lalr1.cc (struct yyltype): Don't define it, since we use
        LocationType.
        (b4_ltype): Default to yy::Location from location.hh.

2002-09-04  Jim Meyering  <jim@meyering.net>

        * data/yacc.c: Guard the declaration of yytoknum also with
        `#ifdef YYPRINT', so it is declared only when used.

2002-09-04  Akim Demaille  <akim@epita.fr>

        * configure.in: Rename as...
        * configure.ac: this.
        Bump to 1.49c.

2002-09-04  Akim Demaille  <akim@epita.fr>

        * src/assoc.c, src/closure.c, src/gram.c, src/injections.c,
        * src/lalr.c, src/LR0.c, src/relation.c, src/tables.c: Don't
        translate maintainer only messages.

2002-08-12  Paul Eggert  <eggert@twinsun.com>

        Version 1.49b.

        * Makefile.am (SUBDIRS): Remove intl.
        (DISTCLEANFILES): Remove.
        * NEWS: Mention that GNU M4 is now required.  Clarify what is
        meant by "larger grammars".  Mention the pt_BR translation.
        * configure.in (AC_CHECK_DECLS): Add getenv, getopt.
        (AM_GNU_GETTEXT_VERSION): New macro, replacing GETTEXT_VERSION var.
        Bump version from 0.11.2 to 0.11.5.
        (BISON_PREREQ_STAGE): Remove.
        (AM_GNU_GETTEXT): Use external gettext.
        (AC_OUTPUT): Remove intl/Makefile.

        * config/depcomp, config/install-sh: Sync with Automake 1.6.3.

        * data/glr.c: Include string.h, for strlen.
        (yyreportParseError): Use size_t for yysize.
        (yy_yypstack): No longer nested inside yypstates, as nested
        functions are not portable.  Do not assume size_t is the
        same width as int.
        (yypstates): Do not assume that ptrdiff_t is the same width
        as int, and similarly for yyposn and YYINDEX.

        * data/yacc.c: Fix comment about `$$ = $1': it can copy garbage.

        * lib/Makefile.am (INCLUDES): Do not include from the intl
        directory, which has been removed.
        * src/Makefile.am (INCLUDES): Likewise.

        * lib/Makefile.am (libbison_a_SOURCES): Add unlocked-io.h.
        (bitsets_sources, additional_bitsets_sources, timevars_sources):
        New vars.

        * lib/Makefile.am (libbison_a_SOURCES): Avoid +=, a GNU make extension.
        * tests/Makefile.am (EXTRA_DIST): Likewise.

        * lib/abitset.c (abitset_reverse_list, ebitset_reverse_list):
        Do not assume that bitset_windex is the same width as unsigned.

        * lib/abitset.c (abitset_unused_clear): Do not assume that
        bitset_word is the same width as int.
        * lib/bbitset.h (BITSET_INDEX_MAX, BITSET_MSB): Likewise.
        * lib/bitset.h (bitset_set, bitset_reset): Likewise.
        * lib/bitset_stats.c (bitset_stats_set, bitset_stats_reset): Likewise.
        * lib/ebitset.c (ebitset_set, ebitset_reset): Likewise.
        * lib/lbitset.c (lbitset_set, lbitset_reset): Likewise.

        * lib/abitset.c (abitset_op1): Use -1, not ~0, as memset arg (for
        portability to one's complement hosts!).
        * lib/ebitset.c (ebitset_op1): Likewise.
        * lib/lbitset.c (lbitset_op1): Likewise.

        * lib/argmatch.c, lib/quotearg.c, quotearg.h: Sync with GNU tar.
        * lib/argmatch.h, lib/basename.c, lib/dirname.c, lib/dirname.h,
        lib/hash.c, lib/hash.h, lib/strnlen.c, lib/xmalloc.c:
        Sync with fileutils.
        * lib/error.c, lib/getopt.c, lib/getopt.h, lib/getopt1.c,
        lib/gettext.h: Sync with diffutils.

        * lib/memrchr.c, lib/mkstemp.c, lib/strchr.c, lib/strnlen.c,
        lib/strspn.c, lib/tempname.c: Use GPL, not LGPL.

        * lib/obstack.c, lib/obstack.h: Sync with fileutils, except use
        PROTOTYPES to check for prototypes, and "defined __STDC__" to
        check for void *.

        * lib/bbitset.h (BITSET_WORD_BITS): Now of type unsigned, not
        size_t; the old version tried to do this but casted improperly.
        (bitset_bindex, bitset_windex): Now size_t, not unsigned long.
        (bitset_test): Now returns int, not unsigned long.

        * lib/bitset_stats.c: Include "gettext.h".
        (_): New macro.
        (bitset_stats_set, bitset_stats_reset, bitset_stats_test): Don't
        name locals "index", as it generates unnecessary warnings on some
        hosts that have an "index" function.

        * lib/bitset_stats.c (bitset_stats_print_1, bitset_stats_print,
        bitset_stats_read, bitset_stats_write): Wrap strings in _() if
        they need translation.
        * src/LR0.c (state_list_append, new_itemsets, get_state,
        append_states, generate_states): Likewise.
        * src/assoc.c (assoc_to_string): Likewise.
        * src/closure.c (print_closure, set_firsts, closure): Likewise.
        * src/gram.c (grammar_dump): Likewise.
        * src/injections.c (injections_compute): Likewise.
        * src/lalr.c (lookaheads_print): Likewise.
        * src/relation.c (relation_transpose): Likewise.
        * src/scan-gram.l: Likewise.
        * src/tables.c (table_grow, pack_vector): Likewise.

        * m4/Makefile.am (EXTRA_DIST): Remove codeset.m4,
        glibc21.m4, isc-posix.m4 lcmessage.m4, stage.m4.
        * m4/malloc.m4, m4/realloc.m4: Sync with diffutils.
        * m4/mbstate_t.m4: Sync with fileutils.
        * m4/prereq.m4 (jm_PREREQ_QUOTEARG): AC_MBSTATE_T -> AC_TYPE_MBSTATE_T.

        * po/LINGUAS: Add pt_BR.
        * po/POTFILES.in: Add src/assoc.c, src/closure.c, src/gram.c,
        src/main.c, src/relation.c, src/state.c, lib/bitset_stats.c,
        lib/timevar.c.
        Use src/parse-gram.y instead of src/parse-gram.c, as the gettext
        manual recommends.
        Similarly, use src/scan-gram.l instead of src/scan-gram.c.

        * src/complain.c (strerror_r): Remove decl; not needed.
        (strerror): Use same pattern as ../lib/error.c.

        * src/files.c, src/files.h (compute_header_macro): Remove; unused.

        * src/gram.c (grammar_dump): Do not assume ptrdiff_t fits in int.

        * src/main.c (main): Cast result of bindtextdomain and textdomain
        to void, to avoid a GCC warning when --disable-nls is in effect.

        * src/scan-gram.l: Use strings rather than escapes when possible,
        to minimize the number of warnings from xgettext.
        (handle_action_dollar, handle_action_at): Don't use isdigit,
        as it mishandles negative chars and it may not work as expected
        outside the C locale.

        * src/symtab.c (symbol_get): Don't cast LHS of an assignment;
        this is a GCC extension and is not portable to other compilers.

        * src/system.h (alloca): Use same pattern as ../lib/error.c.
        Do not include <ctype.h>; no longer needed.
        Do not include <malloc.h>; no longer needed (and generates
        warnings on OpenBSD 3.0).

        * tests/cxx-type.at (yylex): Do not pass signed char to isupper;
        it's not portable.

        * tests/regression.at: Do not use 'cc -c input.c -o input';
        Sun C rejects this.  Instead, use 'cc -c input.c -o input.o'.

        * tests/synclines.at (AC_SYNCLINES_COMPILE): Accept any nonzero
        exit status as failure, not just exit status 1.  Sun C exits
        with status 2 sometimes.

        * tests/torture.at (AT_INCREASE_DATA_SIZE): New macro.
        Use it for the two large tests.

2002-08-02  Akim Demaille  <akim@epita.fr>

        * src/conflicts.c (conflicts_output): Don't output rules never
        reduced here, since anyway that computation doesn't work.
        * src/gram.h, src/gram.h (rule_filter_t, rule_useful_p)
        (rule_useless_p, rule_never_reduced_p): New.
        (grammar_rules_partial_print): Use a filter instead of a range.
        Display the title only if needed.
        (grammar_rules_print): Adjust.
        (grammar_rules_never_reduced_report): New.
        * src/tables.c (action_row): Move the computation of rules never
        reduced to...
        (token_actions): here.
        * src/main.c (main): Make the parser before making the report, so
        that rules never reduced are computed.
        Call grammar_rules_never_reduced_report.
        * src/print.c (print_results): Report rules never reduced.
        * tests/conflicts.at, tests/reduce.at: Adjust.

2002-08-01  Akim Demaille  <akim@epita.fr>

        Instead of attaching lookaheads and duplicating the rules being
        reduced by a state, attach the lookaheads to the reductions.

        * src/state.h (state_t): Remove the `lookaheads',
        `lookaheads_rule' member.
        (reductions_t): Add a `lookaheads' member.
        Use a regular array for the `rules'.
        * src/state.c (reductions_new): Initialize the lookaheads member
        to 0.
        (state_rule_lookaheads_print): Adjust.
        * src/state.h, src/state.c (state_reductions_find): New.
        * src/conflicts.c (resolve_sr_conflict, set_conflicts)
        (count_rr_conflicts): Adjust.
        * src/lalr.c (LArule): Remove.
        (add_lookback_edge): Adjust.
        (state_lookaheads_count): New.
        (states_lookaheads_initialize): Merge into...
        (initialize_LA): this.
        (lalr_free): Adjust.
        * src/main.c (main): Don't free nullable and derives too early: it
        is used by --verbose.
        * src/print.c, src/print_graph.c, src/tables.c: Adjust.

2002-08-01  Akim Demaille  <akim@epita.fr>

        * src/derives.h, src/derives.c (derives): A `rule_t***' instead of
        `rule_number_t**'.
        (set_derives, free_derives): Rename as...
        (derives_compute, derives_free): this.
        Adjust all dependencies.
        * src/nullable.c (set_nullable, free_nullable): Rename as...
        (nullable_compute, nullable_free): these.
        (rule_list_t): Store rule_t *, not rule_number_t.
        * src/state.c (state_rule_lookaheads_print): Directly compare rule
        pointers, instead of their numbers.
        * src/main.c (main): Call nullable_free, and derives_free earlier,
        as they were lo longer used.

2002-08-01  Akim Demaille  <akim@epita.fr>

        * lib/timevar.c (get_time): Include children time.
        * src/lalr.h (LA, LArule): Don't export them: used with the
        state_t.
        * src/lalr.c (LA, LArule): Static.
        * src/lalr.h, src/lalr.c (lalr_free): New.
        * src/main.c (main): Call it.
        * src/tables.c (pack_vector): Check whether loc is >= to the
        table_size, not >.
        (pack_tables): Don't free froms, tos, conflict_tos, and pos...
        (tables_generate): do it, since that's also it which allocates
        them.
        Don't free LA and LArule, main does.

2002-07-31  Akim Demaille  <akim@epita.fr>

        Separate parser tables computation and output.

        * src/output.c (nvectors, base_t, base, base_ninf, conflict_table)
        (conflict_list, conflict_list_cnt, table, check, table_ninf)
        (yydefgoto, yydefact, high): Move to...
        * src/tables.h, src/tables.c: here.
        * src/output.c (vector_number_t, VECTOR_NUMBER_MAX)
        (VECTOR_NUMBER_MIN, state_number_to_vector_number)
        (symbol_number_to_vector_number, nvectors, BASE_MAX, BASE_MIN)
        (froms, tos, conflict_tos, tally, width, action_t, ACTION_MAX)
        (ACTION_MIN, actrow, order, nentries, pos, conflrow)
        (conflict_list_free, table_size, lowzero, table_grow, conflict_row)
        (action_row, save_row, token_actions, save_column, default_goto)
        (goto_actions, sort_actions, matching_state, pack_vector)
        (table_ninf_remap, pack_table, prepare_actions): Move to...
        * src/tables.c: here.
        * src/tables.h, src/tables.c(tables_generate, tables_free): New.
        * src/output.c (token_actions, output_base, output_conflicts)
        (output_check): Merge into...
        (prepare_actions): this.
        (actions_output): Rename as...
        (user_actions_output): this.
        * src/main.c (main): Call tables_generate and tables_free.

2002-07-31  Akim Demaille  <akim@epita.fr>

        Steal GCC's --time-report support.

        * lib/timevar.c, lib/timevar.h, lib/timevar.def: New,
        stolen/adjusted from GCC.
        * m4/stage.m4: Remove time related checks.
        * m4/timevar.m4: New.
        * configure.in: Adjust.
        * src/system.h: Adjust to using timevar.h.
        * src/getargs.h, src/getargs.c: Support trace_time for
        --trace=time.
        * src/main.c (stage): Remove.
        (main): Replace `stage' invocations with timevar calls.
        * src/output.c: Insert pertinent timevar calls.

2002-07-31  Akim Demaille  <akim@epita.fr>

        Let --trace have arguments.

        * src/getargs.h (enum trace_e): New.
        * src/getargs.c (trace_args, trace_types, trace_argmatch): New.
        (long_options, short_options): --trace/-T takes an optional
        argument.
        Change all the uses of trace_flag to reflect the new flags.
        * tests/sets.at (Firsts, Nullable, Broken Closure): Use --trace=sets.

        Strengthen `stage' portability.

        * m4/stage.m4 (BISON_PREREQ_STAGE): New.
        * configure.in: Use it.
        Don't check for malloc.h and sys/times.h.
        * src/system.h: Include them when appropriate.
        * src/main.c (stage): Compile only when mallinfo, struct mallinfo,
        times and struct tms are available.

2002-07-30  Akim Demaille  <akim@epita.fr>

        In verbose parse error message, don't report `error' as an
        expected token.
        * tests/actions.at (Printers and Destructors): Adjust.
        * tests/calc.at (Calculator $1): Adjust.
        * data/yacc.c, data/glr.c, data/lalr1.c: When making the verbose
        error message, do not report the parser accepts the error token in
        that state.

2002-07-30  Akim Demaille  <akim@epita.fr>

        Normalize conflict related messages.

        * src/complain.h, src/complain.c (warn, complain): New.
        * src/conflicts.c (conflicts_print): Use them.
        (conflict_report_yacc): New, extracted from...
        (conflicts_print): here.
        * tests/conflicts.at, tests/existing.at: Adjust.

2002-07-30  Akim Demaille  <akim@epita.fr>

        Report rules which are never reduced by the parser: those hidden
        by conflicts.

        * src/LR0.c (save_reductions): Don't make the final state too
        different: save its reduction (accept) instead of having a state
        without any action (no shift or goto, no reduce).
        Note: the final state is now a ``regular'' state, i.e., the
        parsers now contain `reduce 0' as default reduction.
        Nevertheless, since they decide to `accept' when yystate =
        final_state, they still will not reduce rule 0.
        * src/print.c (print_actions, print_reduction): Adjust.
        * src/output.c (action_row): Track reduced rules.
        (token_actions): Report rules never reduced.
        * tests/conflicts.at, tests/regression.at: Adjust.

2002-07-30  Akim Demaille  <akim@epita.fr>

        `stage' was accidently included in a previous patch.
        Initiate its autoconfiscation.

        * configure.in: Look for malloc.h and sys/times.h.
        * src/main.c (stage): Adjust.
        Report only when trace_flag.

2002-07-29  Akim Demaille  <akim@epita.fr>

        * src/state.h, src/state.c (transitions_t): Holds state_t*'s, not
        state_number_t.
        (errs_t): symbol_t*, not symbol_number_t.
        (reductions_t): rule_t*, not rule_number_t.
        (FOR_EACH_SHIFT): New.
        * src/LR0.c, src/conflicts.c, src/lalr.c, src/output.c
        * src/print.c, src/print_graph.c: Adjust.

2002-07-29  Akim Demaille  <akim@epita.fr>

        Use $accept and $end, as BYacc and BTYacc do, instead of $axiom and $.

        * src/symtab.h, src/symtab.c (eoftoken, axiom): Rename as...
        (endtoken, accept): these.
        * src/reader.c (reader): Set endtoken's default tag to "$end".
        Set undeftoken's tag to "$undefined" instead of "$undefined.".
        * doc/bison.texinfo (Table of Symbols): Mention $accept and $end.
        Adjust.

2002-07-29  Akim Demaille  <akim@epita.fr>

        * src/reduce.c (reduce_grammar): When the language is empty,
        complain about the start symbol, not the axiom.
        Use its location.
        * tests/reduce.at (Empty Language): New.

2002-07-26  Akim Demaille  <akim@epita.fr>

        * src/reader.h, src/reader.c (gram_error): ... can't get
        yycontrol without making too strong assumptions on the parser
        itself.
        * src/output.c (prepare_tokens): Use the real 0th value of
        token_translations instead of `0'.
        * src/parse-gram.y (yyerror): Don't rely on yycontrol being
        visible here.
        * data/yacc.c (yyreport_parse_error): Rename yylocation as yylloc
        for the time being: %locations ought to provide it to yyerror.

2002-07-25  Akim Demaille  <akim@epita.fr>

        * src/output.c (prepare_tokens): Go up to ntokens, not ntokens + 1.
        * doc/bison.texinfo (Decl Summary): s/$illegal/$undefined./.
        * tests/regression.at (Web2c Actions): Adjust.

2002-07-25  Akim Demaille  <akim@epita.fr>

        Stop storing rules from 1 to nrules + 1.

        * src/LR0.c, src/closure.c, src/derives.c, src/gram.c, src/lalr.c
        * src/nullable.c, src/output.c, src/print.c, src/reader.c
        * src/reduce.c: Allocate and free from &rules[0], not &rules[1].
        Iterate from 0 to nrules.
        Use rule_number_as_item_number and item_number_as_rule_number.
        Adjust to `derive' now containing possibly 0.
        * src/gram.h (rule_number_as_item_number, item_number_as_rule_number):
        Handle the `- 1' part in rule numbers from/to item numbers.
        * src/conflicts.c (log_resolution): Fix the message which reversed
        shift and reduce.
        * src/output.c (action_row): Initialize default_rule to -1.
        (token_actions): Adjust.
        * tests/sets.at (Nullable, Firsts): Fix the previously bogus
        expected output.
        * tests/conflicts.at (Resolved SR Conflicts): Likewise.

2002-07-25  Akim Demaille  <akim@epita.fr>

        * data/c.m4 (b4_c_function, b4_c_ansi_args, b4_c_ansi_arg)
        (b4_c_knr_arg_names, b4_c_knr_arg_name, b4_c_knr_arg_decls)
        (b4_c_knr_arg_decl): New.
        * data/yacc.c: Use it to define yysymprint, yydestruct, and
        yyreport_parse_error.

2002-07-25  Akim Demaille  <akim@epita.fr>

        * data/yacc.c (yyreport_parse_error): New, extracted from...
        (yyparse): here.
        (yydestruct, yysymprint): Move above yyparse.
        Be K&R compliant.

2002-07-25  Akim Demaille  <akim@epita.fr>

        * data/c.m4 (b4_ints_in, b4_int_type, b4_int_type_for): New,
        replace...
        (b4_sint_type, b4_uint_type): these.
        * data/yacc.c, data/glr.c, data/lalr1.cc: Use b4_int_type_for.
        * tests/regression.at (Web2c Actions): Adjust.

2002-07-25  Akim Demaille  <akim@epita.fr>

        * src/gram.h (TIEM_NUMBER_MAX): New.
        (item_number_of_rule_number, rule_number_of_item_number): Rename
        as...
        (rule_number_as_item_number, item_number_as_rule_number): these.
        Adjust dependencies.
        * src/output.c (vector_number_t, VECTOR_NUMBER_MAX)
        (VECTOR_NUMBER_MIN, state_number_to_vector_number)
        (symbol_number_to_vector_number): New.
        (order): Of vector_number_t* type.
        (base_t, BASE_MAX, BASE_MIN): New.
        (froms, tos, width, pos, check): Of base_t type.
        (action_number_t, ACTION_MIN, ACTION_MAX): New.
        (actrow): Of action_number_t type.
        (conflrow): Of unsigned int type.
        (table_ninf, base_ninf): New.
        (GENERATE_MUSCLE_INSERT_TABLE): Also output the `*_min' value.
        (muscle_insert_int_table, muscle_insert_base_table)
        (muscle_insert_rule_number_table): New.
        (prepare_tokens): Output `toknum' as int_table.
        (action_row): Returns a rule_number_t.
        Use ACTION_MIN, not SHRT_MIN.
        (token_actions): yydefact is rule_number_t*.
        (table_ninf_remap): New.
        (pack_table): Use it for `base' and `table'.
        * data/yacc.c, data/glr.c, data/lalr1.cc (YYFLAG): Remove,
        replaced with...
        (YYPACT_NINF, YYTABLE_NINF): these.
        (yypact, yytable): Compute their types instead of hard-coded
        `short'.
        * tests/regression.at (Web2c Actions): Adjust.

2002-07-19  Akim Demaille  <akim@epita.fr>

        * src/scan-gram.l (id): Can start with an underscore.

2002-07-16  Akim Demaille  <akim@epita.fr>

        * src/assoc.c, src/asssoc.h (assoc_t, assoc_to_string): New.
        Adjust all former `associativity' dependencies.
        * src/symtab.c (symbol_new): Default associativity is `undef', not
        `right'.
        (symbol_check_alias_consistence): Adjust.

2002-07-09  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo: Properly set the ``header'' part.
        Use @dircategory ``GNU programming tools'' as per Texinfo's
        documentation.
        Use @copying.

2002-07-09  Akim Demaille  <akim@epita.fr>

        * lib/quotearg.h: Protect against multiple inclusions.
        * src/location.h (location_t): Add a `file' member.
        (LOCATION_RESET, LOCATION_PRINT): Adjust.
        * src/complain.c (warn_at, complain_at, fatal_at): Drop
        `error_one_per_line' support.

2002-07-09  Akim Demaille  <akim@epita.fr>

        * src/complain.h, src/complain.c (warn, complain): Remove, unused.
        * src/reader.c (lineno): Remove.
        Adjust all dependencies.
        (get_merge_function): Take a location and use complain_at.
        * src/symtab.h, src/symtab.c (symbol_make_alias): Likewise.
        * tests/regression.at (Invalid inputs, Mixing %token styles):
        Adjust.

2002-07-09  Akim Demaille  <akim@epita.fr>

        * src/parse-gram.y (rules_or_grammar_declaration): Add an error
        recovery rule, and forbid extensions when --yacc.
        (gram_error): Use complain_at.
        * src/reader.c (reader): Exit if there were parse errors.

2002-07-09  Akim Demaille  <akim@epita.fr>

        * tests/synclines.at (AT_SYNCLINES_COMPILE): New.
        (AT_TEST_SYNCLINE): Adjust to unusual GCC outputs.
        Reported by R Blake <blakers@mac.com>.

2002-07-09  Akim Demaille  <akim@epita.fr>

        * data/yacc.c: Output the copyright notive in the header.

2002-07-03  Akim Demaille  <akim@epita.fr>

        * src/output.c (froms, tos): Are state_number_t.
        (save_column): sp, sp1, and sp2 are state_number_t.
        (prepare): Rename `final' as `final_state_number', `nnts' as
        `nterms_number', `nrules' as `rules_number', `nstates' as
        `states_number', and `ntokens' as `tokens_number'.  Remove `nsym',
        unused.
        * data/yacc.c, data/glr.c, data/lalr1.cc: Adjust.
        * data/lalr1.cc (nsym_): Remove, unused.

2002-07-03  Akim Demaille  <akim@epita.fr>

        * src/lalr.h, src/lalr.c (goto_number_t): New.
        * src/lalr.c (goto_list_t): New.
        Propagate them.
        * src/nullable.c (rule_list_t): New.
        Propagate.
        * src/types.h: Remove.

2002-07-03  Akim Demaille  <akim@epita.fr>

        * src/closure.c (print_fderives): Use rule_rhs_print.
        * src/derives.c (print_derives): Use rule_rhs_print.
        (rule_list_t): New, replaces `shorts'.
        (set_derives): Add comments.
        * tests/sets.at (Nullable, Firsts): Adjust.

2002-07-03  Akim Demaille  <akim@epita.fr>

        * src/output.c (prepare_actions): Free `tally' and `width'.
        (prepare_actions): Allocate and free `order'.
        * src/symtab.c (symbols_free): Free `symbols'.
        * src/scan-gram.l (scanner_free): Clear Flex's scanners memory.
        * src/output.c (m4_invoke): Move to...
        * src/scan-skel.l: here.
        (<<EOF>>): Close yyout, and free its name.

2002-07-03  Akim Demaille  <akim@epita.fr>

        Fix some memory leaks, and fix a bug: state 0 was examined twice.

        * src/LR0.c (new_state): Merge into...
        (state_list_append): this.
        (new_states): Merge into...
        (generate_states): here.
        (set_states): Don't ensure a proper `errs' state member here, do it...
        * src/conflicts.c (conflicts_solve): here.
        * src/state.h, src/state.c: Comment changes.
        (state_t): Rename member `shifts' as `transitions'.
        Adjust all dependencies.
        (errs_new): For consistency, also take the values as argument.
        (errs_dup): Remove.
        (state_errs_set): New.
        (state_reductions_set, state_transitions_set): Assert that no
        previous value was assigned.
        (state_free): New.
        (states_free): Use it.
        * src/conflicts.c (resolve_sr_conflict): Don't use an `errs_t' as
        temporary storage: use `errs' and `nerrs' as elsewhere.
        (set_conflicts): Allocate and free this `errs'.

2002-07-02  Akim Demaille  <akim@epita.fr>

        * lib/libiberty.h: New.
        * lib: Update the bitset implementation from upstream.
        * src/closure.c, src/lalr.c, src/output.c, src/print_graph.c,
        * src/state.c: Use BITSET_FOR_EACH, not BITSET_EXECUTE.
        * src/main.c: Adjust bitset stats calls.

2002-07-01  Paul Eggert  <eggert@twinsun.com>

        * src/scan-gram.l (<SC_ESCAPED_CHARACTER>): Convert to unsigned
        char, so that negative chars don't collide with $.

2002-06-30  Akim Demaille  <akim@epita.fr>

        Have the GLR tests be `warning' checked, and fix the warnings.

        * data/glr.c (YYFPRINTF): Always define it, not only when YYDEBUG
        (yyuserAction, yyreportAmbiguity): `Use' all the arguments.
        (yyremoveDeletes): `yyi' and `yyj' are size_t.
        Use YYFPRINTF when under if (YYDEBUG) to avoid empty `if' bodies.
        (yyaddDeferredAction): static.
        (yyglrReduce): yyi, yyk, amd yyposn are size_t.
        (yyreportParseError): yyprefix is const.
        yytokenp is used only when verbose.
        (yy__GNUC__): Replace with __GNUC__.
        (yypdumpstack): yyi is size_t.
        (yypreference): Un-yy local variables and arguments, to avoid
        clashes with `yyr1'.  Anyway, we are not in the user name space.
        (yytname_size): be an int, as is compared with ints.
        * tests/testsuite.at (AT_COMPILE, AT_PARSER_CHECK): New.
        Use them.
        * tests/cxx-gram.at: Use quotation to protect $1.
        Use AT_COMPILE to enable warnings hunts.
        Prototype yylex and yyerror.
        `Use' argc.
        Include `string.h', not `strings.h'.
        Produce and prototype stmtMerge only when used.
        yylex takes a location.

2002-06-30  Akim Demaille  <akim@epita.fr>

        We spend a lot of time in quotearg, in particular when --verbose.

        * src/symtab.c (symbol_get): Store a quoted version of the key.
        (symbol_tag_get, symbol_tag_get_n, symbol_tag_print): Remove.
        Adjust all callers.

2002-06-30  Akim Demaille  <akim@epita.fr>

        * src/state.h (reductions_t): Rename member `nreds' as num.
        (errs_t): Rename members `nerrs' and `errs' as `num' and `symbols'.
        * src/state.c (ERRS_ALLOC, REDUCTIONS_ALLOC): Use the correct types.

2002-06-30  Akim Demaille  <akim@epita.fr>

        * src/state.h, src/state.c (shift_t, SHIFT_SYMBOL, SHIFT_IS_SHIFT)
        (SHIFT_IS_GOTO, SHIFT_IS_ERROR, SHIFT_DISABLE, SHIFT_IS_DISABLED)
        (shifts_to): Rename as...
        (transition_t, TRANSITION_SYMBOL, TRANSITION_IS_TRANSITION)
        (TRANSITION_IS_GOTO, TRANSITION_IS_ERROR, TRANSITION_DISABLE)
        (TRANSITION_IS_DISABLED, transitions_to): these.

2002-06-30  Akim Demaille  <akim@epita.fr>

        * src/print.c (print_shifts, print_gotos): Merge into...
        (print_transitions): this.
        (print_transitions, print_errs, print_reductions): Align the
        lookaheads columns.
        (print_core, print_transitions, print_errs, print_state,
        print_grammar): Output empty lines separator before, not after.
        (state_default_rule_compute): Rename as...
        (state_default_rule): this.
        * tests/conflicts.at (Defaulted Conflicted Reduction),
        (Unresolved SR Conflicts, Resolved SR Conflicts): Adjust.
        * tests/regression.at (Rule Line Numbers, Web2c Report): Adjust.

2002-06-30  Akim Demaille  <akim@epita.fr>

        Display items as we display rules.

        * src/gram.h, src/gram.c (rule_lhs_print): New.
        * src/gram.c (grammar_rules_partial_print): Use it.
        * src/print.c (print_core): Likewise.
        * tests/conflicts.at (Defaulted Conflicted Reduction),
        (Unresolved SR Conflicts): Adjust.
        (Unresolved SR Conflicts): Adjust and rename as...
        (Resolved SR Conflicts): this, as was meant.
        * tests/regression.at (Web2c Report): Adjust.

2002-06-30  Akim Demaille  <akim@epita.fr>

        * src/print.c (state_default_rule_compute): New, extracted from...
        (print_reductions): here.
        Pessimize, but clarify the code.
        * tests/conflicts.at (Defaulted Conflicted Reduction): New.

2002-06-30  Akim Demaille  <akim@epita.fr>

        * src/output.c (action_row): Let default_rule be always a rule
        number.

2002-06-30  Akim Demaille  <akim@epita.fr>

        * src/closure.c (print_firsts, print_fderives, closure):
        Use BITSET_EXECUTE.
        * src/lalr.c (lookaheads_print): Likewise.
        * src/state.c (state_rule_lookaheads_print): Likewise.
        * src/print_graph.c (print_core): Likewise.
        * src/print.c (print_reductions): Likewise.
        * src/output.c (action_row): Likewise.
        Use SHIFT_IS_DISABLED, SHIFT_IS_SHIFT and SHIFT_SYMBOL.

2002-06-30  Akim Demaille  <akim@epita.fr>

        * src/print_graph.c: Use report_flag.

2002-06-30  Akim Demaille  <akim@epita.fr>

        * src/lalr.c (traverse, digraph, matrix_print, transpose): Move
        to...
        * src/relation.h, src/relation.c (traverse, relation_digraph)
        (relation_print, relation_transpose): New.

2002-06-30  Akim Demaille  <akim@epita.fr>

        * src/state.h, src/state.c (shifts_to): New.
        * src/lalr.c (build_relations): Use it.

2002-06-30  Akim Demaille  <akim@epita.fr>

        * src/gram.h (rule_number_t, RULE_NUMBER_MAX, int_of_rule_number)
        (item_number_of_rule_number, rule_number_of_item_number): New.
        * src/LR0.c, src/closure.c, src/derives.c, src/derives.h,
        * src/gram.c, src/lalr.c, src/nullable.c, src/output.c, src/print.c,
        * src/print_graph.c, src/reader.c, src/reduce.c, src/reduce.h:
        Propagate their use.
        Much remains to be done, in particular wrt `shorts' from types.h.

2002-06-30  Akim Demaille  <akim@epita.fr>

        * src/symtab.c (symbol_new): Initialize the `printer' member.

2002-06-30  Akim Demaille  <akim@epita.fr>

        * src/LR0.c (save_reductions): Remove, replaced by...
        * src/state.h, src/state.c (state_reductions_set): New.
        (reductions, errs): Rename as...
        (reductions_t, errs_t): these.
        Adjust all dependencies.

2002-06-30  Akim Demaille  <akim@epita.fr>

        * src/LR0.c (state_list_t, state_list_append): New.
        (first_state, last_state): Now symbol_list_t.
        (this_state): Remove.
        (new_itemsets, append_states, save_reductions): Take a state_t as
        argument.
        (set_states, generate_states): Adjust.
        (save_shifts): Remove, replaced by...
        * src/state.h, src/state.c (state_shifts_set): New.
        (shifts): Rename as...
        (shifts_t): this.
        Adjust all dependencies.
        * src/state.h (state_t): Remove the `next' member.

2002-06-30  Akim Demaille  <akim@epita.fr>

        * src/vcg.c (quote): Use slot 2, since we often pass symbol tag
        escaped in slot 0.

2002-06-30  Akim Demaille  <akim@epita.fr>

        Use hash.h for the state hash table.

        * src/LR0.c (STATE_HASH_SIZE, state_hash): Remove.
        (allocate_storage): Use state_hash_new.
        (free_storage): Use state_hash_free.
        (new_state, get_state): Adjust.
        * src/lalr.h, src/lalr.c (states): Move to...
        * src/states.h (state_t): Remove the `link' member, no longer
        used.
        * src/states.h, src/states.c: here.
        (state_hash_new, state_hash_free, state_hash_lookup)
        (state_hash_insert, states_free): New.
        * src/states.c (state_table, state_compare, state_hash): New.
        * src/output.c (output_actions): Do not free states now, since we
        still need to know the final_state number in `prepare', called
        afterwards.  Do it...
        * src/main.c (main): here: call states_free after `output'.

2002-06-30  Akim Demaille  <akim@epita.fr>

        * src/state.h, src/state.c (state_new): New, extracted from...
        * src/LR0.c (new_state): here.
        * src/state.h (STATE_ALLOC): Move to...
        * src/state.c: here.
        * src/LR0.h, src/LR0.c (nstates, final_state): Move to...
        * src/state.h, src/state.c: here.

2002-06-30  Akim Demaille  <akim@epita.fr>

        * src/reader.c (gensym): Rename as...
        * src/symtab.h, src/symtab.c (dummy_symbol_get): this.
        (getsym): Rename as...
        (symbol_get): this.

2002-06-30  Akim Demaille  <akim@epita.fr>

        * src/state.h (state_number_t, STATE_NUMBER_MAX): New.
        * src/LR0.c, src/LR0.h, src/conflicts.c, src/lalr.c, src/lalr.h,
        * src/output.c, src/print.c, src/print_graph.c: Propagate.
        * src/LR0.h, src/LR0.h (final_state): Is a state_t*.

2002-06-30  Akim Demaille  <akim@epita.fr>

        Make the test suite pass with warnings checked.

        * tests/actions.at (Printers and Destructors): Improve.
        Avoid unsigned vs. signed issues.
        * tests/calc.at: Don't exercise the scanner here, do it...
        * tests/input.at (Torturing the Scanner): here.

2002-06-28  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>

        * data/glr.c: Correct typo in Emacs-mode directive.  Slightly
        reorganize first lines parallel to yacc.c.

2002-06-28  Akim Demaille  <akim@epita.fr>

        * data/c.m4 (b4_copyright, b4_sint_type, b4_uint_type, b4_token_define)
        (b4_token_enum, b4_token_defines): New, factored from...
        * data/lalr1.cc, data/yacc.c, glr.c: here.

2002-06-28  Akim Demaille  <akim@epita.fr>

        * data/yacc.c (yydestruct, yysymprint): Pacify GCC warnings for
        unused variables.
        * src/output.c (merger_output): static.

2002-06-28  Akim Demaille  <akim@epita.fr>

        * src/reader.h: s/grammer_current_rule_merge_set/grammar_.../.
        * src/conflicts.c (conflicts_total_count): `i' is unsigned, to
        pacify GCC.
        * src/output.c (save_row): Initialize all the variables to pacify GCC.

2002-06-27  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>

        Accumulated changelog for new GLR parsing features.

        * src/conflicts.c (count_total_conflicts): Change name to
        conflicts_total_count.
        * src/conflicts.h: Ditto.
        * src/output.c (token_actions): Use the new name.
        (output_conflicts): Change conflp => conflict_list_heads, and
        confl => conflict_list for better readability.
        * data/glr.c: Use the new names.
        * NEWS: Add self to GLR announcement.

        * src/reader.c (free_merger_functions): Cleanup: XFREE->free.

        * doc/bison.texinfo (GLR Parsers): Make corrections suggested by
        Akim Demaille.

        * data/bison.glr: Change name to glr.c
        * data/glr.c: Renamed from bison.glr.
        * data/Makefile.am: Add glr.c

        * src/getargs.c:

        * src/symlist.h:  Add dprec and merger fields to symbol_list_s.
        * src/symlist.c (symbol_list_new): Initialize dprec and merger fields.

        Originally 2002-06-16  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>

        * data/bison.glr: Be sure to restore the
        current #line when returning to the skeleton contents after having
        exposed the input file's #line.

        Originally 2002-06-13  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>

        * data/bison.glr: Bring up to date with changes to bison.simple.

        Originally 2002-06-03  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>

        * data/bison.glr: Correct definitions that use b4_prefix.
        Various reformatting.
        (GLRStack): Make yychar (in YYPURE case) and yytokenp as part of stack.
        (yyreportParseError, yyrecoverParseError, yyprocessOneStack): remove
        yytokenp argument; now part of stack.
        (yychar): Define to behave as documented.
        (yyclearin): Ditto.

        Originally 2002-05-14  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>

        * src/reader.h: Add declaration for free_merger_functions.

        * src/reader.c (merge_functions): New variable.
        (get_merge_function): New function.
        (free_merger_functions): New function.
        (readgram): Check for %prec that is not followed by a symbol.
        Handle %dprec and %merge declarations.
        (packgram): Initialize dprec and merger fields in rules array.

        * src/output.c (conflict_tos, conflrow, conflict_table, conflict_list,
        conflict_list_cnt, conflict_list_free): New variables.
        (table_grow): Also grow conflict_table.
        (prepare_rules): Output dprec and merger tables.
        (conflict_row): New function.
        (action_row): Output conflict lists for GLR parser.  Don't use
        default reduction in conflicted states for GLR parser so that there
        are spaces for the conflict lists.
        (save_row): Also save conflict information.
        (token_actions): Allocate conflict list.
        (merger_output): New function.
        (pack_vector): Pack conflict table, too.
        (output_conflicts): New function to output yyconflp and yyconfl.
        (output_check): Allocate conflict_tos.
        (output_actions): Output conflict tables, also.
        (output_skeleton): Output b4_mergers definition.
        (prepare): Output b4_max_rhs_length definition.
        Use 'bison.glr' as default skeleton for GLR parsers.

        * src/gram.c (glr_parser): New flag.
        (grammar_free): Call free_merger_functions.

        * src/conflicts.c (count_rr_conflicts): Augment to optionally count
        all pairs of conflicting reductions, rather than just all tokens
        causing conflicts.  Needed to size conflict tables.
        (conflicts_output): Modify call to count_rr_conflicts for new
        interface.
        (conflicts_print): Ditto.
        (count_total_conflicts): New function.

        * src/reader.h (merger_list): New type.
        (merge_functions): New variable.

        * src/lex.h (tok_dprec, tok_merge): New token types.

        * src/gram.h (rule_s): Add dprec and merger fields.
        (glr_parser): New flag.

        * src/conflicts.h (count_total_conflicts): New function.

        * src/options.c (option_table): Add %dprec, %merge, and %glr-parser.

        * doc/bison.texinfo (Generalized LR Parsing): New section.
        (GLR Parsers): New section.
        (Language and Grammar): Mention GLR parsing.
        (Table of Symbols): Add %dprec, %glr-parser, %merge, GLR
        Correct typo ("tge" -> "the").

        * data/bison.glr: New skeleton for GLR parsing.

        * tests/cxx-gram.at: New tests for GLR parsing.

        * tests/testsuite.at: Include cxx-gram.at.

        * tests/Makefile.am: Add cxx-gram.at.

        * src/parse-gram.y:

        * src/scan-gram.l: Add %dprec, %glr-parser, %merge.

        * src/parse-gram.y: Grammar for %dprec, %merge, %glr-parser.

2002-06-27  Akim Demaille  <akim@epita.fr>

        * src/options.h, src/options.c: Remove.
        * src/getargs.c (short_options, long_options): New.

2002-06-27  Akim Demaille  <akim@epita.fr>

        * data/bison.simple, data/bison.c++: Rename as...
        * data/yacc.c, data/lalr1.cc: these.
        * doc/bison.texinfo (Environment Variables): Remove.

2002-06-25  Raja R Harinath  <harinath@cs.umn.edu>

        * src/getargs.c (report_argmatch): Initialize strtok().

2002-06-20  Akim Demaille  <akim@epita.fr>

        * data/bison.simple (b4_symbol_actions): New, replaces...
        (b4_symbol_destructor, b4_symbol_printer): these.
        (yysymprint): Be sure to call YYPRINT only for tokens, and using
        user token numbers.

2002-06-20  Akim Demaille  <akim@epita.fr>

        * data/bison.simple (yydestructor): Rename as...
        (yydestruct): this.

2002-06-20  Akim Demaille  <akim@epita.fr>

        * src/symtab.h, src/symtab.c (symbol_type_set)
        (symbol_destructor_set, symbol_precedence_set): The location is
        the last argument.
        Adjust all callers.

2002-06-20  Akim Demaille  <akim@epita.fr>

        * src/parse-gram.y (YYPRINT, yyprint): Don't mess with the parser
        internals.
        * src/reader.h, src/reader.c (grammar_current_rule_prec_set):
        Takes a location.
        * src/symtab.h, src/symtab.c (symbol_class_set)
        (symbol_user_token_number_set): Likewise.
        Adjust all callers.
        Promote complain_at.
        * tests/input.at (Type Clashes): Adjust.

2002-06-20  Akim Demaille  <akim@epita.fr>

        * data/bison.simple (YYLEX): Fix the declaration when
        %pure-parser.

2002-06-20  Akim Demaille  <akim@epita.fr>

        * data/bison.simple (yysymprint): Don't print the token number,
        just its name.
        * tests/actions.at (Destructors): Rename as...
        (Printers and Destructors): this.
        Also exercise %printer.

2002-06-20  Akim Demaille  <akim@epita.fr>

        * data/bison.simple (YYDSYMPRINT): New.
        Use it to remove many of the #if YYDEBUG/if (yydebug).

2002-06-20  Akim Demaille  <akim@epita.fr>

        * src/symtab.h, src/symtab.c (symbol_t): printer and
        printer_location are new members.
        (symbol_printer_set): New.
        * src/parse-gram.y (PERCENT_PRINTER): New token.
        Handle its associated rule.
        * src/scan-gram.l: Adjust.
        (handle_destructor_at, handle_destructor_dollar): Rename as...
        (handle_symbol_code_at, handle_symbol_code_dollar): these.
        * src/output.c (symbol_printers_output): New.
        (output_skeleton): Call it.
        * data/bison.simple (yysymprint): New.  Cannot be named yyprint
        since there are already many grammar files with a user `yyprint'.
        Replace the calls to YYPRINT to calls to yysymprint.
        * tests/calc.at: Adjust.
        * tests/torture.at (AT_DATA_STACK_TORTURE): Remove YYPRINT: it was
        taking advantage of parser very internal details (stack size!).

2002-06-20  Akim Demaille  <akim@epita.fr>

        * src/scan-gram.l: Complete the scanner with the missing patterns
        to pacify Flex.
        Use `quote' and `symbol_tag_get' where appropriate.

2002-06-19  Akim Demaille  <akim@epita.fr>

        * tests/actions.at (Destructors): Augment to test locations.
        * data/bison.simple (yydestructor): Pass it the current location
        if locations are enabled.
        Prototype only when __STDC__ or C++.
        Change the argument names to move into the yy name space: there is
        user code here.

2002-06-19  Akim Demaille  <akim@epita.fr>

        * data/bison.simple (b4_pure_if): New.
        Use it instead of #ifdef YYPURE.

2002-06-19  Akim Demaille  <akim@epita.fr>

        * data/bison.simple (b4_location_if): New.
        Use it instead of #ifdef YYLSP_NEEDED.

2002-06-19  Akim Demaille  <akim@epita.fr>

        Prepare @$ in %destructor, but currently don't bind it in the
        skeleton, as %location use is not cleaned up yet.

        * src/scan-gram.l (handle_dollar, handle_destructor_at)
        (handle_action_at): New.
        (handle_at, handle_action_dollar, handle_destructor_dollar): Take
        a braced_code_t and a location as additional arguments.
        (handle_destructor_dollar): Instead of requiring `b4_eval', just
        unquote one when outputting `b4_dollar_dollar'.
        Adjust callers.
        * data/bison.simple (b4_eval): Remove.
        (b4_symbol_destructor): Adjust.
        * tests/input.at (Invalid @n): Adjust.

2002-06-19  Zack Weinberg  <zack@codesourcery.com>

        * doc/bison.texinfo: Document ability to have multiple
        prologue sections.

2002-06-18  Akim Demaille  <akim@epita.fr>

        * src/files.c (compute_base_names): When computing the output file
        names from the input file name, strip the directory part.

2002-06-18  Akim Demaille  <akim@epita.fr>

        * data/bison.simple.new: Comment changes.
        Reported by Andreas Schwab.

2002-06-18  Matt Kraai  <kraai@alumni.cmu.edu>

        * data/bison.simple (yyoverflowlab): #ifndef yyoverflow, so that
        there are no `label `yyoverflowlab' defined but not used' warnings
        when yyoverflow is defined.

2002-06-18  Akim Demaille  <akim@epita.fr>

        * src/symtab.h, src/symtab.c (symbol_t): destructor_location is a
        new member.
        (symbol_destructor_set): Adjust.
        * src/output.c (symbol_destructors_output): Output the destructor
        locations.
        Output the symbol name.
        * data/bison.simple (b4_symbol_destructor): Adjust.

2002-06-18  Cris Bailiff  <c.bailiff@awayweb.com>
        and Akim Demaille  <akim@epita.fr>

        * data/bison.simple.new (yyerrlab1): Be sure to pop and destroy
        what's left on the stack when the error recovery hits EOF.
        * tests/actions.at (Destructors): Complete to exercise this case.

2002-06-17  Akim Demaille  <akim@epita.fr>

        * data/m4sugar/m4sugar.m4 (m4_map): Recognize when the list of
        arguments is really empty, not only equal to `[]'.
        * src/symtab.h, src/symtab.c (symbol_t): `destructor' is a new
        member.
        (symbol_destructor_set): New.
        * src/output.c (symbol_destructors_output): New.
        * src/reader.h (brace_code_t, current_braced_code): New.
        * src/scan-gram.l (BRACED_CODE): Use it to branch on...
        (handle_dollar): Rename as...
        (handle_action_dollar): this.
        (handle_destructor_dollar): New.
        * src/parse-gram.y (PERCENT_DESTRUCTOR): New.
        (grammar_declaration): Use it.
        * data/bison.simple (yystos): Is always defined.
        (yydestructor): New.
        * tests/actions.at (Destructors): New.
        * tests/calc.at (_AT_CHECK_CALC_ERROR): Don't rely on egrep.

2002-06-17  Akim Demaille  <akim@epita.fr>

        * src/symlist.h, src/symlist.c (symbol_list_length): New.
        * src/scan-gram.l (handle_dollar, handle_at): Compute the
        rule_length only when needed.
        * src/output.c (actions_output, token_definitions_output): Output
        the full M4 block.
        * src/symtab.c: Don't access directly to the symbol tag, use
        symbol_tag_get.
        * src/parse-gram.y: Use symbol_list_free.

2002-06-17  Akim Demaille  <akim@epita.fr>

        * src/reader.h, src/reader.c (symbol_list, symbol_list_new)
        (symbol_list_prepend, get_type_name): Move to...
        * src/symlist.h, src/symlist.c (symbol_list_t, symbol_list_new)
        (symbol_list_prepend, symbol_list_n_type_name_get): here.
        Adjust all callers.
        (symbol_list_free): New.
        * src/scan-gram.l (handle_dollar): Takes a location.
        * tests/input.at (Invalid $n): Adjust.

2002-06-17  Akim Demaille  <akim@epita.fr>

        * src/reader.h, src/reader.c (symbol_list_new): Export it.
        (symbol_list_prepend): New.
        * src/parse-gram.y (%union): `list' is a new member.
        (symbols.1): New, replaces...
        (terms_to_prec.1, nterms_to_type.1): these.
        * src/symtab.h, src/symtab.c (symbol_type_set, symbol_precedence_set)
        Take a location as additional argument.
        Adjust all callers.

2002-06-15  Akim Demaille  <akim@epita.fr>

        * src/parse-gram.y: Move %token in the declaration section so that
        we don't depend upon CVS Bison.

2002-06-15  Akim Demaille  <akim@epita.fr>

        * src/state.h, src/state.c (state_rule_lookaheads_print): New.
        * src/print.c (print_core): Use it.

2002-06-15  Akim Demaille  <akim@epita.fr>

        * src/conflicts.c (log_resolution): Accept the rule involved in
        the sr conflicts instead of the lookahead number that points to
        that rule.
        (flush_reduce): Accept the current lookahead vector as argument,
        instead of the index in LA.
        (resolve_sr_conflict): Accept the current number of lookahead
        bitset to consider for the STATE, instead of the index in LA.
        (set_conflicts): Adjust.
        * src/lalr.c, src/lalr.h, src/state.h: Comment changes.

2002-06-15  Akim Demaille  <akim@epita.fr>

        * src/state.h (state_t): Replace the `lookaheadsp' member, a
        short, with `lookaheads' (bitsetv), `lookaheads_rule' (rule_t**).
        Adjust all dependencies.
        * src/lalr.c (initialize_lookaheads): Split into...
        (states_lookaheads_count, states_lookaheads_initialize): these.
        (lalr): Adjust.

2002-06-15  Akim Demaille  <akim@epita.fr>

        * src/gram.h, src/gram.c (grammar_rules_partial_print): New, eved
        out of...
        (grammar_rules_print): here.
        * src/reduce.c (reduce_output): Use it.
        * tests/reduce.at (Useless Rules, Reduced Automaton)
        (Underivable Rules): Adjust.

2002-06-15  Akim Demaille  <akim@epita.fr>

        Copy BYacc's nice way to report the grammar.

        * src/gram.h, src/gram.c (grammar_rhs_print, grammar_rules_print):
        New.
        Don't print the rules' location, it is confusing and useless.
        (rule_print): Use grammar_rhs_print.
        * src/print.c (print_grammar): Use grammar_rules_print.

2002-06-15  Akim Demaille  <akim@epita.fr>

        Complete and rationalize `useless thing' warnings.

        * src/symtab.h, src/symtab.c (symbol_tag_get, symbol_tag_get_n)
        (symbol_tag_print): New.
        Use them everywhere in place of accessing directly the tag member.
        * src/gram.h, src/gram.c (rule_print): New.
        Use it where a rule used to be printed `by hand'.
        * src/reduce.c (nonterminals_reduce): Report the use nonterminals.
        (reduce_grammar_tables): Report the useless rules.
        (reduce_print): Useless things are a warning, not an error.
        Report it as such.
        * tests/reduce.at (Useless Nonterminals, Useless Rules):
        (Reduced Automaton, Underivable Rules): Adjust.
        * tests/regression.at (Web2c Report, Web2c Report): Adjust.
        * tests/conflicts.at (Unresolved SR Conflicts)
        (Solved SR Conflicts): Adjust.

2002-06-15  Akim Demaille  <akim@epita.fr>

        Let symbols have a location.

        * src/symtab.h, src/symtab.c (symbol_t): Location is a new member.
        (getsym): Adjust.
        Adjust all callers.
        * src/complain.h, src/complain.c (complain_at, fatal_at, warn_at):
        Use location_t, not int.
        * src/symtab.c (symbol_check_defined): Take advantage of the
        location.
        * tests/regression.at (Invalid inputs): Adjust.

2002-06-15  Akim Demaille  <akim@epita.fr>

        * src/parse-gram.y (YYLLOC_DEFAULT, current_lhs_location): New.
        (input): Don't try to initialize yylloc here, do it in the
        scanner.
        * src/scan-gram.l (YY_USER_INIT): Initialize yylloc.
        * src/gram.h (rule_t): Change line and action_line into location
        and action_location, of location_t type.
        Adjust all dependencies.
        * src/location.h, src/location.c (empty_location): New.
        * src/reader.h, src/reader.c (grammar_start_symbol_set)
        (grammar_symbol_append, grammar_rule_begin, grammar_rule_end)
        (grammar_current_rule_symbol_append)
        (grammar_current_rule_action_append): Expect a location as argument.
        * src/reader.c (grammar_midrule_action): Adjust to attach an
        action's location as dummy symbol location.
        * src/symtab.h, src/symtab.c (startsymbol_location): New.
        * tests/regression.at (Web2c Report, Rule Line Numbers): Adjust
        the line numbers.

2002-06-14  Akim Demaille  <akim@epita.fr>

        Grammar declarations may be found in the grammar section.

        * src/parse-gram.y (rules_or_grammar_declaration): New.
        (declarations): Each declaration may end with a semicolon, not
        just...
        (grammar_declaration): `"%union"'.
        (grammar): Branch to rules_or_grammar_declaration.

2002-06-14  Akim Demaille  <akim@epita.fr>

        * src/main.c (main): Invoke scanner_free.

2002-06-14  Akim Demaille  <akim@epita.fr>

        * src/output.c (m4_invoke): Extracted from...
        (output_skeleton): here.
        Free tempfile.

2002-06-14  Akim Demaille  <akim@epita.fr>

        * src/parse-gram.y (directives, directive, gram)
        (grammar_directives, precedence_directives, precedence_directive):
        Rename as...
        (declarations, declaration, grammar, grammar_declaration)
        (precedence_declaration, precedence_declarator): these.
        (symbol_declaration): New.

2002-06-14  Akim Demaille  <akim@epita.fr>

        * src/files.c (action_obstack): Remove, unused.
        (output_obstack): Remove it, and all its dependencies, as it is no
        longer needed.
        * src/reader.c (epilogue_set): Build the epilogue in the
        muscle_obstack.
        * src/output.h, src/output.c (muscle_obstack): Move to...
        * src/muscle_tab.h, src/muscle_tab.h: here.
        (muscle_init): Initialize muscle_obstack.
        (muscle_free): New.
        * src/main.c (main): Call it.

2002-06-14  Akim Demaille  <akim@epita.fr>

        * src/location.h: New, extracted from...
        * src/reader.h: here.
        * src/Makefile.am (noinst_HEADERS): Merge into
        (bison_SOURCES): this.
        Add location.h.
        * src/parse-gram.y: Use location_t instead of Bison's.
        * src/reader.h, src/reader.c (prologue_augment, epilogue_set):
        Use location_t instead of ints.

2002-06-14  Akim Demaille  <akim@epita.fr>

        * data/bison.simple, data/bison.c++: Be sure to restore the
        current #line when returning to the skeleton contents after having
        exposed the input file's #line.

2002-06-12  Akim Demaille  <akim@epita.fr>

        * src/scan-gram.l (SC_BRACED_CODE): Don't use `<.*>', it is too
        eager.
        * tests/actions.at (Exotic Dollars): New.

2002-06-12  Akim Demaille  <akim@epita.fr>

        * src/scan-gram.l (SC_PROLOGUE): Don't eat characters amongst
        ['"/] too eagerly.
        * tests/input.at (Torturing the Scanner): New.

2002-06-11  Akim Demaille  <akim@epita.fr>

        * src/scan-gram.l (YY_OBS_INIT): Remove, replace with...
        [SC_COMMENT,SC_STRING,SC_CHARACTER,SC_BRACED_CODE,SC_PROLOGUE]
        [SC_EPILOGUE]: Output the quadrigraphs only when not in a comment.
        * src/reader.h, src/scan-gram.l (scanner_initialize): this.
        * src/reader.c (reader): Use it.

2002-06-11  Akim Demaille  <akim@epita.fr>

        * src/scan-gram.l (YY_OBS_FINISH): Don't set yylval.
        Adjust all callers.
        (scanner_last_string_free): New.

2002-06-11  Akim Demaille  <akim@epita.fr>

        * src/scan-gram.l (YY_INIT, YY_GROW, YY_FINISH): Rename as...
        (YY_OBS_INIT, YY_OBS_GROW, YY_OBS_FINISH): these.
        (last_string, YY_OBS_FREE): New.
        Use them when returning an ID.

2002-06-11  Akim Demaille  <akim@epita.fr>

        Have Bison grammars parsed by a Bison grammar.

        * src/reader.c, src/reader.h (prologue_augment): New.
        * src/reader.c (copy_definition): Remove.

        * src/reader.h, src/reader.c (gram_start_symbol_set, prologue_augment)
        (grammar_symbol_append, grammar_rule_begin, grammar_midrule_action)
        (grammar_current_rule_prec_set, grammar_current_rule_check)
        (grammar_current_rule_symbol_append)
        (grammar_current_rule_action_append): Export.
        * src/parse-gram.y (symbol_list_new, symbol_list_symbol_append_
        (symbol_list_action_append): Remove.
        Hook the routines from reader.
        * src/scan-gram.l: In INITIAL, characters and strings are tokens.
        * src/system.h (ATTRIBUTE_NORETURN, ATTRIBUTE_UNUSED): Now.

        * src/reader.c (read_declarations): Remove, unused.

        * src/parse-gram.y: Handle the epilogue.
        * src/reader.h, src/reader.c (gram_start_symbol_set): Rename as...
        (grammar_start_symbol_set): this.
        * src/scan-gram.l: Be sure to ``use'' yycontrol to keep GCC quiet.
        * src/reader.c (readgram): Remove, unused.
        (reader): Adjust to insert eoftoken and axiom where appropriate.

        * src/reader.c (copy_dollar): Replace with...
        * src/scan-gram.h (handle_dollar): this.
        * src/parse-gram.y: Remove `%thong'.

        * src/reader.c (copy_at): Replace with...
        * src/scan-gram.h (handle_at): this.

        * src/complain.h, src/complain.c (warn_at, complain_at, fatal_at):
        New.

        * src/scan-gram.l (YY_LINES): Keep lineno synchronized for the
        time being.

        * src/reader.h, src/reader.c (grammar_rule_end): New.

        * src/parse.y (current_type, current_class): New.
        Implement `%nterm', `%token' support.
        Merge `%term' into `%token'.
        (string_as_id): New.
        * src/symtab.h, src/symtab.c (symbol_make_alias): Don't pass the
        type name.

        * src/parse-gram.y: Be sure to handle properly the beginning of
        rules.

        * src/parse-gram.y: Handle %type.
        * src/reader.c (grammar_rule_end): Call grammar_current_rule_check.

        * src/parse-gram.y: More directives support.
        * src/options.c: No longer handle source directives.

        * src/parse-gram.y: Fix %output.

        * src/parse-gram.y: Handle %union.
        Use the prologue locations.
        * src/reader.c (parse_union_decl): Remove.

        * src/reader.h, src/reader.c (epilogue_set): New.
        * src/parse-gram.y: Use it.

        * data/bison.simple, data/bison.c++: b4_stype is now either not
        defined, then default to int, or to the contents of %union,
        without `union' itself.
        Adjust.
        * src/muscle_tab.c (muscle_init): Don't predefine `stype'.

        * src/output.c (actions_output): Don't output braces, as they are
        already handled by the scanner.

        * src/scan-gram.l (SC_CHARACTER): Set the user_token_number of
        characters to themselves.

        * tests/reduce.at (Reduced Automaton): End the grammars with %% so
        that the epilogue has a proper #line.

        * src/parse-gram.y: Handle precedence/associativity.

        * src/symtab.c (symbol_precedence_set): Requires the symbol to be
        a terminal.
        * src/scan-gram.l (SC_BRACED_CODE): Catch strings and characters.
        * tests/calc.at: Do not use `%token "foo"' as it makes not sense
        at all to define terminals that cannot be emitted.

        * src/scan-gram.l: Escape M4 characters.

        * src/scan-gram.l: Working properly with escapes in user
        strings/characters.

        * tests/torture.at (AT_DATA_TRIANGULAR_GRAMMAR)
        (AT_DATA_HORIZONTAL_GRAMMAR): Respect the `%token ID NUM STRING'
        grammar.
        Use more modest sizes, as for the time being the parser does not
        release memory, and therefore the process swallows a huge amount
        of memory.

        * tests/torture.at (AT_DATA_LOOKAHEADS_GRAMMAR): Adjust to the
        stricter %token grammar.

        * src/symtab.h (associativity): Add `undef_assoc'.
        (symbol_precedence_set): Do nothing when passed an undef_assoc.
        * src/symtab.c (symbol_check_alias_consistence): Adjust.

        * tests/regression.at (Invalid %directive): Remove, as it is now
        meaningless.
        (Invalid inputs): Adjust to the new error messages.
        (Token definitions): The new grammar doesn't allow too many
        eccentricities.

        * src/lex.h, src/lex.c: Remove.
        * src/reader.c (lastprec, skip_to_char, read_signed_integer)
        (copy_character, copy_string2, copy_string, copy_identifier)
        (copy_comment, parse_token_decl, parse_type_decl, parse_assoc_decl)
        (parse_muscle_decl, parse_dquoted_param, parse_skel_decl)
        (parse_action): Remove.
        * po/POTFILES.in: Adjust.

2002-06-11  Akim Demaille  <akim@epita.fr>

        * src/reader.c (parse_action): Don't store directly into the
        rule's action member: return the action as a string.
        Don't require `rule_length' as an argument: compute it.
        (grammar_current_rule_symbol_append)
        (grammar_current_rule_action_append): New, eved out from
        (readgram): here.
        Remove `action_flag', `rulelength', unused now.

2002-06-11  Akim Demaille  <akim@epita.fr>

        * src/reader.c (grammar_current_rule_prec_set).
        (grammar_current_rule_check): New, eved out from...
        (readgram): here.
        Remove `xaction', `first_rhs': useless.
        * tests/input.at (Type clashes): New.
        * tests/existing.at (GNU Cim Grammar): Adjust.

2002-06-11  Akim Demaille  <akim@epita.fr>

        * src/reader.c (grammar_midrule_action): New, Eved out from
        (readgram): here.

2002-06-11  Akim Demaille  <akim@epita.fr>

        * src/reader.c (grammar_rule_begin, previous_rule, current_rule):
        New.
        (readgram): Use them as replacement of inlined code, crule and
        crule1.

2002-06-11  Akim Demaille  <akim@epita.fr>

        * src/reader.c (grammar_end, grammar_symbol_append): New.
        (readgram): Use them.
        Make the use of `p' as local as possible.

2002-06-10  Akim Demaille  <akim@epita.fr>

        GCJ's parser requires the tokens to be defined before the prologue.

        * data/bison.simple: Output the token definition before the user's
        prologue.
        * tests/regression.at (Braces parsing, Duplicate string)
        (Mixing %token styles): Check the output from bison.
        (Early token definitions): New.

2002-06-10  Akim Demaille  <akim@epita.fr>

        * src/symtab.c (symbol_user_token_number_set): Don't complain when
        assigning twice the same user number to a token, so that we can
        use it in...
        * src/lex.c (lex): here.
        Also use `symbol_class_set' instead of hand written code.
        * src/reader.c (parse_assoc_decl): Likewise.

2002-06-10  Akim Demaille  <akim@epita.fr>

        * src/symtab.c, src/symtab.c (symbol_class_set)
        (symbol_user_token_number_set): New.
        * src/reader.c (parse_token_decl): Use them.
        Use a switch instead of ifs.
        Use a single argument.

2002-06-10  Akim Demaille  <akim@epita.fr>

        Remove `%thong' support as it is undocumented, unused, duplicates
        `%token's job, and creates useless e-mail traffic with people who
        want to know what it is, why it is undocumented, unused, and
        duplicates `%token's job.

        * src/reader.c (parse_thong_decl): Remove.
        * src/options.c (option_table): Remove "thong".
        * src/lex.h (tok_thong): Remove.

2002-06-10  Akim Demaille  <akim@epita.fr>

        * src/symtab.c, src/symtab.c (symbol_type_set)
        (symbol_precedence_set): New.
        * src/reader.c (parse_type_decl, parse_assoc_decl): Use them.
        (value_components_used): Remove, unused.

2002-06-09  Akim Demaille  <akim@epita.fr>

        Move symbols handling code out of the reader.

        * src/reader.h, src/reader.c (errtoken, undeftoken, eoftoken)
        (axiom): Move to...
        * src/symtab.h, src/symtab.c: here.

        * src/gram.c (start_symbol): Remove: use startsymbol->number.
        * src/reader.c (startval): Rename as...
        * src/symtab.h, src/symtab.c (startsymbol): this.
        * src/reader.c: Adjust.

        * src/reader.c (symbol_check_defined, symbol_make_alias)
        (symbol_check_alias_consistence, symbol_pack, symbol_translation)
        (token_translations_init)
        Move to...
        * src/symtab.c: here.
        * src/reader.c (packsymbols): Move to...
        * src/symtab.h, src/symtab.c (symbols_pack): here.
        * src/symtab.h, src/symtab.c (symbol_make_alias): Takes SYMVAL as
        argument.

2002-06-03  Akim Demaille  <akim@epita.fr>

        * src/muscle_tab.c (muscle_insert, muscle_find): Declarations,
        then statements.

2002-06-03  Akim Demaille  <akim@epita.fr>

        * src/muscle_tab.c (muscle_find, muscle_insert): Don't initialize
        structs with non literals.
        * src/scan-skel.l: never-interactive.
        * src/conflicts.c (enum conflict_resolution_e): No trailing
        comma.
        * src/getargs.c (usage): Split long literal strings.
        Reported by Hans Aberg.

2002-05-28  Akim Demaille  <akim@epita.fr>

        * data/bison.c++: Use C++ ostreams.
        (cdebug_): New member.

2002-05-28  Akim Demaille  <akim@epita.fr>

        * src/output.c (output_skeleton): Be sure to allocate enough room
        for `/' _and_ for `\0' in full_skeleton.

2002-05-28  Akim Demaille  <akim@epita.fr>

        * data/bison.c++: Catch up with bison.simple:
        2002-05-24  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>
        and Paul Eggert  <eggert@twinsun.com>: `error' handing.
        2002-05-26  Akim Demaille  <akim@epita.fr>: stos_, token_number_,
        and popping traces.

2002-05-27  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>

        * src/output.c (output_skeleton): Put an explicit path in front of
        the skeleton file name, rather than relying on the -I directory,
        to partially alleviate effects of having a skeleton file lying around
        in the current directory.

2002-05-27  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>

        * src/conflicts.c (log_resolution): Correct typo:
        obstack_printf should be obstack_fgrow1.

2002-05-26  Akim Demaille  <akim@epita.fr>

        * src/state.h (state_t): `solved_conflicts' is a new member.
        * src/LR0.c (new_state): Set it to 0.
        * src/conflicts.h, src/conflicts.c (print_conflicts)
        (free_conflicts, solve_conflicts): Rename as...
        (conflicts_print, conflicts_free, conflicts_solve): these.
        Adjust callers.
        * src/conflicts.c (enum conflict_resolution_e)
        (solved_conflicts_obstack): New, used by...
        (log_resolution): this.
        Adjust to attach the conflict resolution to each state.
        Complete the description with the precedence/associativity
        information.
        (resolve_sr_conflict): Adjust.
        * src/print.c (print_state): Output its solved_conflicts.
        * tests/conflicts.at (Unresolved SR Conflicts)
        (Solved SR Conflicts): Exercise --report=all.

2002-05-26  Akim Demaille  <akim@epita.fr>

        * src/LR0.c, src/derives.c, src/gram.c, src/gram.h, src/lalr.c,
        * src/nullable.c, src/output.c, src/print.c, src/print_graph.c,
        * src/reader.c, src/reduce.c, src/state.h, src/symtab.h
        (token_number_t, item_number_as_token_number)
        (token_number_as_item_number, muscle_insert_token_number_table):
        Rename as...
        (symbol_number_t, item_number_as_symbol_number)
        (symbol_number_as_item_number, muscle_insert_symbol_number_table):
        these, since it is more appropriate.

2002-05-26  Akim Demaille  <akim@epita.fr>

        * tests/calc.at (AT_CHECK_CALC): Adjust: there are now additional
        `Error:' lines.
        * data/bison.simple (yystos) [YYDEBUG]: New.
        (yyparse) [YYDEBUG]: Display the symbols which are popped during
        error recovery.
        * tests/regression.at (Web2c Actions): Adjust: yystos is output now.

2002-05-25  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo (Debugging): Split into...
        (Tracing): this new section, its former contents, and...
        (Understanding): this new section.
        * src/getargs.h, src/getargs.c (verbose_flag): Remove, replaced
        by...
        (report_flag): this.
        Adjust all dependencies.
        (report_args, report_types, report_argmatch): New.
        (usage, getargs): Report/support -r, --report.
        * src/options.h
        (struct option_table_struct): Rename as..,
        (struct option_table_s): this.
        Rename the `set_flag' member to `flag' to match with getopt_long's
        struct.
        * src/options.c (option_table): Split verbose into an entry for
        %verbose, and another for --verbose.
        Support --report/-r, so remove -r from the obsolete --raw.
        * src/print.c: Attach full item sets and lookaheads reports to
        report_flag instead of trace_flag.
        * lib/argmatch.h, lib/argmatch.c: New, from Fileutils 4.1.

2002-05-24  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>
        and Paul Eggert  <eggert@twinsun.com>

        * data/bison.simple (yyparse): Correct error handling to conform to
        POSIX and yacc.  Specifically, after syntax error is discovered,
        do not reduce further before shifting the error token.
        Clean up the code a bit by removing the labels yyerrdefault,
        yyerrhandle, yyerrpop.
        * NEWS: Document the above.

2002-05-20  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>

        * data/bison.simple (yyr1): Don't use yy_token_number_type as element
        type; it isn't always big enough, since it doesn't necessarily
        include non-terminals.
        (yytranslate): Expand definition of yy_token_number_type, so that
        the latter can be removed.
        (yy_token_number_type): Remove, only one use.
        * data/bison.c++ (r1_): Parallel change to yyr1 in bison.simple---
        don't use TokenNumberType as element type.

        * tests/regression.at: Modify expected output to agree with change
        to yyr1 and yytranslate.

2002-05-13  Florian Krohm  <florian@edamail.fishkill.ibm.com>

        * src/reader.c (parse_action): Use copy_character instead of
        obstack_1grow.

2002-05-13  Akim Demaille  <akim@epita.fr>

        * tests/regression.at (Token definitions): Prototype yylex and
        yyerror.

2002-05-12  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>

        * src/scan-skel.l: Correct off-by-one error in handling of __oline__.
        * data/bison.simple (b4_sint_type, b4_uint_type): Correct to reflect
        32-bit arithmetic.
        * data/bison.c++ (b4_sint_type, b4_uint_type): Ditto.

2002-05-07  Akim Demaille  <akim@epita.fr>

        * tests/synclines.at: Be sure to prototype yylex and yyerror to
        avoid GCC warnings.

2002-05-07  Akim Demaille  <akim@epita.fr>

        Kill GCC warnings.

        * src/reduce.c (nonterminals_reduce): Don't loop over RITEM: loop
        over the RHS of each rule.
        * src/gram.h, src/gram.c (nritems): Is `unsigned int', not int.
        * src/state.h (state_t): Member `nitems' is unsigned short.
        * src/LR0.c (get_state): Adjust.
        * src/reader.c (packgram): Likewise.
        * src/output.c (GENERATE_MUSCLE_INSERT_TABLE): `max' is of type
        `Type'.
        (muscle_insert_int_table): Remove, unused.
        (prepare_rules): Remove `max'.

2002-05-06  Akim Demaille  <akim@epita.fr>

        * src/closure.c (print_firsts): Display of the symbol tags.
        (bitmatrix_print): Move to...
        * lib/bitsetv-print.h, lib/bitsetv-print.c (bitsetv_matrix_dump):
        here.
        * tests/sets.at (Nullable, Broken Closure, Firsts): Adjust.

2002-05-06  Akim Demaille  <akim@epita.fr>

        * src/muscle_tab.c (muscle_m4_output): Must return TRUE for
        hash_do_for_each.

2002-05-06  Akim Demaille  <akim@epita.fr>

        * src/LR0.c (new_state, get_state): Instead of using the global
        `kernel_size' and `kernel_base', have two new arguments:
        `core_size' and `core'.
        Adjust callers.

2002-05-06  Akim Demaille  <akim@epita.fr>

        * src/reader.c (packgram): No longer end `ritem' with a 0
        sentinel: it is not used.

2002-05-05  Akim Demaille  <akim@epita.fr>

        New experimental feature: display the lookaheads in the report and
        graph.

        * src/print (print_core): When --trace-flag, display the rules
        lookaheads.
        * src/print_graph.c (print_core): Likewise.
        Swap the arguments.
        Adjust caller.

2002-05-05  Akim Demaille  <akim@epita.fr>

        * tests/torture.at (Many lookaheads): New test.

2002-05-05  Akim Demaille  <akim@epita.fr>

        * src/output.c (GENERATE_OUTPUT_TABLE): Replace with...
        (GENERATE_MUSCLE_INSERT_TABLE): this.
        (output_int_table, output_unsigned_int_table, output_short_table)
        (output_token_number_table, output_item_number_table): Replace with...
        (muscle_insert_int_table, muscle_insert_unsigned_int_table)
        (muscle_insert_short_table, muscle_insert_token_number_table)
        (muscle_insert_item_number_table): these.
        Adjust all callers.
        (prepare_tokens): Don't free `translations', since...
        * src/reader.h, src/reader.c (grammar_free): do it.
        Move to...
        * src/gram.h, src/gram.c (grammar_free): here.
        * data/bison.simple, data/bison.c++: b4_token_number_max is now
        b4_translate_max.

2002-05-05  Akim Demaille  <akim@epita.fr>

        * src/output.c (output_unsigned_int_table): New.
        (prepare_rules): `i' is unsigned.
        `prhs', `rline', `r2' are unsigned int.
        Rename muscle `rhs_number_max' as `rhs_max'.
        Output muscles `prhs_max', `rline_max', and `r2_max'.
        Free rline and r1.
        * data/bison.simple, data/bison.c++: Adjust to use these muscles
        to compute types instead of constant types.
        * tests/regression.at (Web2c Actions): Adjust.

2002-05-04  Akim Demaille  <akim@epita.fr>

        * src/symtab.h (SALIAS, SUNDEF): Rename as...
        (USER_NUMBER_ALIAS, USER_NUMBER_UNDEFINED): these.
        Adjust dependencies.
        * src/output.c (token_definitions_output): Be sure not to output a
        `#define 'a'' when fed with `%token 'a' "a"'.
        * tests/regression.at (Token definitions): New.

2002-05-03  Paul Eggert  <eggert@twinsun.com>

        * data/bison.simple (b4_token_defines): Also define YYTOKENTYPE
        for K&R C.

2002-05-03  gettextize  <bug-gnu-gettext@gnu.org>

        * Makefile.am (SUBDIRS): Remove intl.
        (EXTRA_DIST): Add config/config.rpath.

2002-05-03  Akim Demaille  <akim@epita.fr>

        * data/bison.simple (m4_if): Don't output empty enums.
        And actually, output valid enum definitions :(.

2002-05-03  Akim Demaille  <akim@epita.fr>

        * configure.bat: Remove, completely obsolete.
        * Makefile.am (EXTRA_DIST): Adjust.
        Don't distribute config.rpath...
        * config/Makefile.am (EXTRA_DIST): Do it.

2002-05-03  Akim Demaille  <akim@epita.fr>

        * configure.in (GETTEXT_VERSION): New.
        Suggested by Bruno Haible for the forthcoming Gettext 0.10.3.

2002-05-03  Akim Demaille  <akim@epita.fr>

        * data/bison.simple (b4_token_enum): New.
        (b4_token_defines): Use it to output tokens both as #define and
        enums.
        Suggested by Paul Eggert.
        * src/output.c (token_definitions_output): Don't output spurious
        white spaces.

2002-05-03  Akim Demaille  <akim@epita.fr>

        * data/m4sugar/m4sugar.m4: Update from CVS Autoconf.

2002-05-02  Robert Anisko  <robert@lrde.epita.fr>

        * data/bison.c++: Adapt expansion of $s and @s to the C++ parser.
        Update the stack class, give a try to deque as the default container.

2002-05-02  Akim Demaille  <akim@epita.fr>

        * data/bison.simple (yyparse): Do not implement @$ = @1.
        (YYLLOC_DEFAULT): Adjust to do it.
        * doc/bison.texinfo (Location Default Action): Fix.

2002-05-02  Akim Demaille  <akim@epita.fr>

        * src/reader.c (parse_braces): Merge into...
        (parse_action): this.

2002-05-02  Akim Demaille  <akim@epita.fr>

        * configure.in (ALL_LINGUAS): Remove.
        * po/LINGUAS, hr.po: New.

2002-05-02  Akim Demaille  <akim@epita.fr>

        Remove the so called hairy (semantic) parsers.

        * src/system.h (EXT_GUARD_C, EXT_STYPE_H): Remove.
        * src/gram.h, src/gram.c (semantic_parser): Remove.
        (rule_t): Remove the guard and guard_line members.
        * src/lex.h (token_t): remove tok_guard.
        * src/options.c (option_table): Remove %guard and %semantic_parser
        support.
        * src/output.c, src/output.h (guards_output): Remove.
        (prepare): Adjust.
        (token_definitions_output): Don't output the `T'
        tokens (???).
        (output_skeleton): Don't output the guards.
        * src/files.c, src/files.c (attrsfile): Remove.
        * src/reader.c (symbol_list): Remove the guard and guard_line
        members.
        Adjust dependencies.
        (parse_guard): Remove.
        * data/bison.hairy: Remove.
        * doc/bison.texinfo (Environment Variables): Remove occurrences of
        BISON_HAIRY.

2002-05-02  Akim Demaille  <akim@epita.fr>

        * src/reader.c (copy_at, copy_dollarm parse_braces, parse_action)
        (parse_guard): Rename the formal argument `stack_offset' as
        `rule_length', which is more readable.
        Adjust callers.
        (copy_at, copy_dollar): Instead of outputting the hard coded
        values of $$, $n and so forth, output invocation to b4_lhs_value,
        b4_lhs_location, b4_rhs_value, and b4_rhs_location.
        Note: this patch partially drops `semantic-parser' support: it
        always does `rule_length - n', where semantic parsers ought to
        always use `-n'.
        * data/bison.simple, data/bison.c++ (b4_lhs_value)
        (b4_lhs_location, b4_rhs_value, and b4_rhs_location: New.

2002-05-02  Akim Demaille  <akim@epita.fr>

        * configure.in (AC_INIT): Bump to 1.49b.
        (AM_INIT_AUTOMAKE): Short invocation.

2002-05-02  Akim Demaille  <akim@epita.fr>

        Version 1.49a.

2002-05-01  Akim Demaille  <akim@epita.fr>

        * src/skeleton.h: Remove.

2002-05-01  Akim Demaille  <akim@epita.fr>

        * src/skeleton.h: Fix the #endif.
        Reported by Magnus Fromreide.

2002-04-26  Paul Eggert  <eggert@twinsun.com>

        * data/bison.simple (YYSTYPE_IS_TRIVIAL, YYLTYPE_IS_TRIVIAL):
        Define if we define YYSTYPE and YYLTYPE, respectively.
        (YYCOPY): Fix [] quoting problem in the non-GCC case.

2002-04-25  Robert Anisko  <robert@lrde.epita.fr>

        * src/scan-skel.l: Postprocess quadrigraphs.

        * src/reader.c (copy_character): New function, used to output
        single characters while replacing `[' and `]' with quadrigraphs, to
        avoid troubles with M4 quotes.
        (copy_comment): Output characters with copy_character.
        (read_additionnal_code): Likewise.
        (copy_string2): Likewise.
        (copy_definition): Likewise.

        * tests/calc.at: Exercise M4 quoting.

2002-04-25  Akim Demaille  <akim@epita.fr>

        * tests/sets.at (AT_EXTRACT_SETS): Sed portability issue: no space
        between `!' and the command.
        Reported by Paul Eggert.

2002-04-24  Robert Anisko  <robert@lrde.epita.fr>

        * tests/calc.at: Exercise prologue splitting.

        * data/bison.simple, data/bison.c++: Use `b4_pre_prologue' and
        `b4_post_prologue' instead of `b4_prologue'.

        * src/output.c (prepare): Add the `pre_prologue' and `post_prologue'
        muscles.
        (output): Free pre_prologue_obstack and post_prologue_obstack.
        * src/files.h, src/files.c (attrs_obstack): Remove.
        (pre_prologue_obstack, post_prologue_obstack): New.
        * src/reader.c (copy_definition): Add a parameter to specify the
        obstack to fill, instead of using attrs_obstack unconditionally.
        (read_declarations): Pass pre_prologue_obstack to copy_definition if
        `%union' has not yet been seen, pass post_prologue_obstack otherwise.

2002-04-23  Paul Eggert  <eggert@twinsun.com>

        * data/bison.simple: Remove unnecessary commentary and white
        space differences from 1_29-branch.
        Depend on YYERROR_VERBOSE, not defined (YYERROR_VERBOSE).

        (union yyalloc, YYSTACK_GAP_MAX, YYSTACK_BYTES, YYCOPY,
        YYSTACK_RELOCATE): Do not define if yyoverflow is defined, or
        if this is a C++ parser and YYSTYPE or YYLTYPE has nontrivial
        constructors or destructors.

        (yyparse) [! defined YYSTACK_RELOCATE]: Do not relocate the stack.

2002-04-23  Akim Demaille  <akim@epita.fr>

        * tests/sets.at (AT_EXTRACT_SETS): Don't use 8 char long sed labels.
        * tests/synclines.at (AT_TEST_SYNCLINE): Be robust to GCC's
        location with columns.
        * tests/conflicts.at (%nonassoc and eof): Don't use `error.h'.
        All reported by Paul Eggert.

2002-04-22  Akim Demaille  <akim@epita.fr>

        * src/reduce.c (dump_grammar): Move to...
        * src/gram.h, src/gram.c (grammar_dump): here.
        Be sure to separate long item numbers.
        Don't read the members of a rule's prec if its nil.

2002-04-22  Akim Demaille  <akim@epita.fr>

        * src/output.c (table_size, table_grow): New.
        (MAXTABLE): Remove, replace uses with table_size.
        (pack_vector): Instead of dying when the table is too big, grow it.

2002-04-22  Akim Demaille  <akim@epita.fr>

        * data/bison.simple (yyr1): Its type is that of a token number.
        * data/bison.c++ (r1_): Likewise.
        * tests/regression.at (Web2c Actions): Adjust.

2002-04-22  Akim Demaille  <akim@epita.fr>

        * src/reader.c (token_translations_init): 256 is now the default
        value for the error token, i.e., it will be assigned another
        number if the user assigned 256 to one of her tokens.
        (reader): Don't force 256 to error.
        * doc/bison.texinfo (Symbols): Adjust.
        * tests/torture.at (AT_DATA_HORIZONTAL_GRAMMAR)
        (AT_DATA_TRIANGULAR_GRAMMAR): Number the tokens as 1, 2, 3
        etc. instead of 10, 20, 30 (which was used to `jump' over error
        (256) and undefined (2)).

2002-04-22  Akim Demaille  <akim@epita.fr>

        Propagate more token_number_t.

        * src/gram.h (token_number_as_item_number)
        (item_number_as_token_number): New.
        * src/output.c (GENERATE_OUTPUT_TABLE): New.
        Use it to create output_item_number_table and
        output_token_number_table.
        * src/LR0.c, src/derives.c, src/gram.c, src/gram.h, src/lalr.c,
        * src/lex.c, src/nullable.c, src/output.c, src/print.c,
        * src/print_graph.c, src/reader.c, src/reduce.c, src/state.h,
        * src/symtab.c, src/symtab.h: Use token_number_t instead of shorts.

2002-04-22  Akim Demaille  <akim@epita.fr>

        * src/output.h, src/output.c (get_lines_number): Remove.

2002-04-19  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo (Actions): Make clear that `|' is not the same
        as Lex/Flex'.
        (Debugging): More details about enabling the debugging features.
        (Table of Symbols): Describe $$, $n, @$, and @n.
        Suggested by Tim Josling.

2002-04-19  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo: Remove the uses of the obsolete @refill.

2002-04-10  Akim Demaille  <akim@epita.fr>

        * src/system.h: Rely on HAVE_LIMITS_H.
        Suggested by Paul Eggert.

2002-04-09  Akim Demaille  <akim@epita.fr>

        * tests/calc.at (_AT_CHECK_CALC_ERROR): Receive as argument the
        full stderr, and strip it according to the bison options, instead
        of composing the error message from different bits.
        This makes it easier to check for several error messages.
        Adjust all the invocations.
        Add an invocation exercising the error token.
        Add an invocation demonstrating a stupid error message.
        (_AT_DATA_CALC_Y): Follow the GCS: initial column is 1, not 0.
        Adjust the tests.
        Error message are for stderr, not stdout.

2002-04-09  Akim Demaille  <akim@epita.fr>

        * src/gram.h, src/gram.c (error_token_number): Remove, use
        errtoken->number.
        * src/reader.c (reader): Don't specify the user token number (2)
        for $undefined, as it uselessly prevents using it.
        * src/gram.h (token_number_t): Move to...
        * src/symtab.h: here.
        (state_t.number): Is a token_number_t.
        * src/print.c, src/reader.c: Use undeftoken->number instead of
        hard coded 2.
        (Even though this 2 is not the same as above: the number of the
        undeftoken remains being 2, it is its user token number which
        might not be 2).
        * src/output.c (prepare_tokens): Rename the `maxtok' muscle with
        `user_token_number_max'.
        Output `undef_token_number'.
        * data/bison.simple, data/bison.c++: Use them.
        Be sure to map invalid yylex return values to
        `undef_token_number'.  This saves us from gratuitous SEGV.

        * tests/conflicts.at (Solved SR Conflicts)
        (Unresolved SR Conflicts): Adjust.
        * tests/regression.at (Web2c Actions): Adjust.

2002-04-08  Akim Demaille  <akim@epita.fr>

        * data/bison.c++: s/b4_item_number_max/b4_rhs_number_max/.
        Adding #line.
        Remove the duplicate `typedefs'.
        (RhsNumberType): Fix the declaration and various other typos.
        Use __ofile__.
        * data/bison.simple: Use __ofile__.
        * src/scan-skel.l: Handle __ofile__.

2002-04-08  Akim Demaille  <akim@epita.fr>

        * src/gram.h (item_number_t): New, the type of item numbers in
        RITEM.  Note that it must be able to code symbol numbers as
        positive number, and the negation of rule numbers as negative
        numbers.
        Adjust all dependencies (pretty many).
        * src/reduce.c (rule): Remove this `short *' pointer: use
        item_number_t.
        * src/system.h (MINSHORT, MAXSHORT): Remove.
        Include `limits.h'.
        Adjust dependencies to using SHRT_MAX and SHRT_MIN.
        (shortcpy): Remove.
        (MAXTABLE): Move to...
        * src/output.c (MAXTABLE): here.
        (prepare_rules): Use output_int_table to output rhs.
        * data/bison.simple, data/bison.c++: Adjust.
        * tests/torture.at (Big triangle): Move the limit from 254 to
        500.
        * tests/regression.at (Web2c Actions): Ajust.

        Trying with bigger grammars shows various phenomena: at 3000 (28Mb
        of grammar file) bison is killed by my system, at 2000 (12Mb) bison
        passes, but produces negative #line number, once fixed, GCC is
        killed while compiling 14Mb, at 1500 (6.7 Mb of grammar, 8.2Mb of
        C), it passes.
        * src/state.h (state_h): Code input lines on ints, not shorts.

2002-04-08  Akim Demaille  <akim@epita.fr>

        * src/reduce.c (reduce_grammar): First reduce the nonterminals,
        and then the grammar.

2002-04-08  Akim Demaille  <akim@epita.fr>

        * src/system.h: No longer using strndup.

2002-04-07  Akim Demaille  <akim@epita.fr>

        * src/muscle_tab.h (MUSCLE_INSERT_LONG_INT): New.
        * src/output.c (output_table_data): Return the longest number.
        (prepare_tokens): Output `token_number_max').
        * data/bison.simple, data/bison.c++ (b4_sint_type, b4_uint_type):
        New.
        Use them to define yy_token_number_type/TokenNumberType.
        Use this type for yytranslate.
        * tests/torture.at (Big triangle): Push the limit from 124 to
        253.
        * tests/regression.at (Web2c Actions): Adjust.

2002-04-07  Akim Demaille  <akim@epita.fr>

        * tests/torture.at (Big triangle): New.
        (GNU AWK Grammar, GNU Cim Grammar): Move to...
        * tests/existing.at: here.

2002-04-07  Akim Demaille  <akim@epita.fr>

        * src/gram.h, src/gram.c (nitems): Remove, it is an alias of
        nritems.
        Adjust dependencies.

2002-04-07  Akim Demaille  <akim@epita.fr>

        * src/reader.c: Normalize increments to prefix form.

2002-04-07  Akim Demaille  <akim@epita.fr>

        * src/reader.c, symtab.c: Remove debugging code.

2002-04-07  Akim Demaille  <akim@epita.fr>

        Rename all the `bucket's as `symbol_t'.

        * src/gram.c, src/gram.h, src/lex.c, src/lex.h, src/output.c,
        * src/reader.c, src/reader.h, src/reduce.c, src/state.h,
        * src/symtab.c, src/symtab.h (bucket): Rename as...
        (symbol_t): this.
        (symbol_list_new, bucket_check_defined, bucket_make_alias)
        (bucket_check_alias_consistence, bucket_pack, bucket_translation)
        (bucket_new, bucket_free, hash_compare_bucket, hash_bucket)
        (buckets_new, buckets_free, buckets_do): Rename as...
        (symbol_list_new, symbol_check_defined, symbol_make_alias)
        (symbol_check_alias_consistence, symbol_pack, symbol_translation)
        (symbol_new, symbol_free, hash_compare_symbol_t, hash_symbol_t)
        (symbols_new, symbols_free, symbols_do): these.

2002-04-07  Akim Demaille  <akim@epita.fr>

        Use lib/hash for the symbol table.

        * src/gram.c (ntokens): Initialize to 1, to reserve a slot for
        EOF.
        * src/lex.c (lex): Set the `number' member of new terminals.
        * src/reader.c (bucket_check_defined, bucket_make_alias)
        (bucket_check_alias_consistence, bucket_translation): New.
        (reader, grammar_free, readgram, token_translations_init)
        (packsymbols): Adjust.
        (reader): Number the predefined tokens.
        * src/reduce.c (inaccessable_symbols): Just use hard coded numbers
        for predefined tokens.
        * src/symtab.h (bucket): Remove all the hash table related
        members.
        * src/symtab.c (symtab): Replace by...
        (bucket_table): this.
        (bucket_new, bucket_free, hash_compare_bucket, hash_bucket)
        (buckets_new, buckets_do): New.

2002-04-07  Akim Demaille  <akim@epita.fr>

        * src/gram.c (nitems, nrules, nsyms, ntokens, nvars, nritems)
        (start_symbol, max_user_token_number, semantic_parser)
        (error_token_number): Initialize.
        * src/reader.c (grammar, start_flag, startval, typed, lastprec):
        Initialize.
        (reader): Don't.
        (errtoken, eoftoken, undeftoken, axiom): Extern.

2002-04-07  Akim Demaille  <akim@epita.fr>

        * src/gram.h (rule_s): prec and precsym are now pointers
        to the bucket giving the priority/associativity.
        Member `associativity' removed: useless.
        * src/reduce.c, src/conflicts.c: Adjust.

2002-04-07  Akim Demaille  <akim@epita.fr>

        * src/lalr.c, src/LR0.c, src/closure.c, src/gram.c, src/reduce.c:
        Properly escape the symbols' TAG when outputting them.

2002-04-07  Akim Demaille  <akim@epita.fr>

        * src/lalr.h (LA): Is a bitsetv, not bitset*.

2002-04-07  Akim Demaille  <akim@epita.fr>

        * src/lalr.h, src/lalr.c (LAruleno): Replace with...
        (LArule): this, which is an array to rule_t*.
        * src/print.c, src/conflicts.c: Adjust.

2002-04-07  Akim Demaille  <akim@epita.fr>

        * src/gram.h (rule_t): Rename `number' as `user_number'.
        `number' is a new member.
        Adjust dependencies.
        * src/reduce.c (reduce_grammar_tables): Renumber rule_t.number.

2002-04-07  Akim Demaille  <akim@epita.fr>

        As a result of the previous patch, it is no longer needed
        to reorder ritem itself.

        * src/reduce.c (reduce_grammar_tables): Don't sort RITEM.

2002-04-07  Akim Demaille  <akim@epita.fr>

        Be sure never to walk through RITEMS, but use only data related to
        the rules themselves. RITEMS should be banished.

        * src/output.c (output_token_translations): Rename as...
        (prepare_tokens): this.
        In addition to `translate', prepare the muscles `tname' and
        `toknum', which were handled by...
        (output_rule_data): this.
        Remove, and move the remainder of its outputs into...
        (prepare_rules): this new routines, which also merges content from
        (output_gram): this.
        (prepare_rules): Be sure never to walk through RITEMS.
        (output_stos): Rename as...
        (prepare_stos): this.
        (output): Always invoke prepare_states, after all, just don't use it
        in the output if you don't need it.

2002-04-07  Akim Demaille  <akim@epita.fr>

        * src/LR0.c (new_state): Display `nstates' as the name of the
        newly created state.
        Adjust to initialize first_state and last_state if needed.
        Be sure to distinguish the initial from the final state.
        (new_states): Create the itemset of the initial state, and use
        new_state.
        * src/closure.c (closure): Now that the initial state has its
        items properly set, there is no need for a special case when
        creating `ruleset'.

        As a result, now the rule 0, reducing to $axiom, is visible in the
        outputs.  Adjust the test suite.

        * tests/conflicts.at (Solved SR Conflicts)
        (Unresolved SR Conflicts): Adjust.
        * tests/regression.at (Web2c Report, Rule Line Numbers): Idem.
        * tests/conflicts.at (S/R in initial): New.

2002-04-07  Akim Demaille  <akim@epita.fr>

        * src/LR0.c (allocate_itemsets): Don't loop over ritem: loop over
        the RHS of the rules.
        * src/output.c (output_gram): Likewise.

2002-04-07  Akim Demaille  <akim@epita.fr>

        * src/gram.h (rule_t): `lhs' is now a pointer to the symbol's
        bucket.
        Adjust all dependencies.
        * src/reduce.c (nonterminals_reduce): Don't forget to renumber the
        `number' of the buckets too.
        * src/gram.h: Include `symtab.h'.
        (associativity): Move to...
        * src/symtab.h: here.
        No longer include `gram.h'.

2002-04-07  Akim Demaille  <akim@epita.fr>

        * src/gram.h, src/gram.c (rules_rhs_length): New.
        (ritem_longest_rhs): Use it.
        * src/gram.h (rule_t): `number' is a new member.
        * src/reader.c (packgram): Set it.
        * src/reduce.c (reduce_grammar_tables): Move the useless rules at
        the end of `rules', and count them out of `nrules'.
        (reduce_output, dump_grammar): Adjust.
        * src/print.c (print_grammar): It is no longer needed to check for
        the usefulness of a rule, as useless rules are beyond `nrules + 1'.
        * tests/reduce.at (Reduced Automaton): New test.

2002-04-07  Akim Demaille  <akim@epita.fr>

        * src/reduce.c (inaccessable_symbols): Fix a buglet: because of a
        lacking `+ 1' to nrules, Bison reported as useless a token if it
        was used solely to set the precedence of the last rule...

2002-04-07  Akim Demaille  <akim@epita.fr>

        * data/bison.c++, data/bison.simple: Don't output the current file
        name in #line, to avoid useless diffs between two identical
        outputs under different names.

2002-04-07  Akim Demaille  <akim@epita.fr>

        * src/closure.c, src/print.c, src/reader.c, src/reduce.c:
        Normalize loops to using `< nrules + 1', not `<= nrules'.

2002-04-07  Akim Demaille  <akim@epita.fr>

        * TODO: Update.

2002-04-07  Akim Demaille  <akim@epita.fr>

        * src/output.c, src/reader.c, src/symtab.c, src/symtab.h: Rename
        bucket.value as bucket.number.

2002-04-07  Akim Demaille  <akim@epita.fr>

        * src/closure.c, src/derives.c, src/gram.h, src/lalr.c,
        * src/nullable.c, src/output.c, src/print.c, src/print_graph.c,
        * src/reader.c, src/reduce.c: Let rule_t.rhs point directly to the
        RHS, instead of being an index in RITEMS.

2002-04-04  Paul Eggert  <eggert@twinsun.com>

        * doc/bison.texinfo: Update copyright date.
        (Rpcalc Lexer, Symbols, Token Decl): Don't assume ASCII.
        (Symbols): Warn about running Bison in one character set,
        but compiling and/or running in an incompatible one.
        Warn about character code 256, too.

2002-04-03  Paul Eggert  <eggert@twinsun.com>

        * src/bison.data (YYSTACK_ALLOC): Depend on whether
        YYERROR_VERBOSE is nonzero, not whether it is defined.

        Merge changes from bison-1_29-branch.

2002-03-20  Paul Eggert  <eggert@twinsun.com>

        Merge fixes from Debian bison_1.34-1.diff.

        * configure.in (AC_PREREQ): 2.53.

2002-03-20  Akim Demaille  <akim@epita.fr>

        * src/conflicts.c (log_resolution): Argument `resolution' is const.

2002-03-19  Paul Eggert  <eggert@twinsun.com>

        * src/bison.simple (YYCOPY): New macro.
        (YYSTACK_RELOCATE): Use it.
        Remove Type arg; no longer needed.  All callers changed.
        (yymemcpy): Remove; no longer needed.

        * Makefile.am (AUTOMAKE_OPTIONS): 1.6.
        * doc/Makefile.am (AUTOMAKE_OPTIONS): Remove.

2002-03-19  Akim Demaille  <akim@epita.fr>

        Test and fix the #line outputs.

        * tests/atlocal.at (GCC): New.
        * tests/synclines.at (AT_TEST_SYNCLINE): New macro.
        (Prologue synch line, ,%union synch line, Postprologue synch line)
        (Action synch line, Epilogue synch line): New tests.
        * src/reader.c (parse_union_decl): Define the muscle stype_line.
        * data/bison.simple, data/bison.c++: Use it.

2002-03-19  Akim Demaille  <akim@epita.fr>

        * tests/regression.at (%nonassoc and eof, Unresolved SR Conflicts)
        (Solved SR Conflicts, %expect not enough, %expect right)
        (%expect too much): Move to...
        * tests/conflicts.at: this new file.

2002-03-19  Akim Demaille  <akim@epita.fr>

        * data/m4sugar/m4sugar.m4: Update from CVS Autoconf.
        * data/bison.simple, data/bison.c++: Handle the `#define' part, so
        that we can move to enums for instance.
        * src/output.c (token_definitions_output): Output a list of
        `token-name, token-number' instead of the #define.
        (output_skeleton): Name this list `b4_tokens', not `b4_tokendefs'.

2002-03-14  Akim Demaille  <akim@epita.fr>

        Use Gettext 0.11.1.

2002-03-09  Robert Anisko  <robert@lrde.epita.fr>

        * data/bison.c++: Make the user able to add members to the generated
        parser by subclassing.

2002-03-05  Robert Anisko  <robert@lrde.epita.fr>

        * src/reader.c (read_additionnal_code): `c' should be an integer, not
        a character.
        Reported by Nicolas Tisserand and Nicolas Burrus.

2002-03-04  Robert Anisko  <robert@lrde.epita.fr>

        * src/reader.c: Warn about lacking semi-colons, do not complain.

2002-03-04  Robert Anisko  <robert@lrde.epita.fr>

        * data/bison.c++: Remove a debug line.

2002-03-04  Robert Anisko  <robert@lrde.epita.fr>

        * data/bison.c++: Unmerge value as yylval and value as yyval.  Unmerge
        location as yylloc and location as yyloc.  Use YYLLOC_DEFAULT, and
        provide a default implementation.

2002-03-04  Akim Demaille  <akim@epita.fr>

        * tests/input.at (Invalid $n, Invalid @n): Add the ending `;'.
        * tests/output.at (AT_CHECK_OUTPUT): Likewise.
        * tests/headers.at (AT_TEST_CPP_GUARD_H): Ditto.
        * tests/semantic.at (Parsing Guards): Similarly.
        * src/reader.at (readgram): Complain if the last rule is not ended
        with a semi-colon.

2002-03-04  Akim Demaille  <akim@epita.fr>

        * src/warshall.h, src/warshall.c (bitmatrix_print): Move to...
        * src/closure.c: here.
        (set_firsts): Use bitsetv_reflexive_transitive_closure instead of
        RTC.
        * src/warshall.h, src/warshall.c: Remove.
        * tests/sets.at (Broken Closure): Adjust.

2002-03-04  Akim Demaille  <akim@epita.fr>

        * src/output.c (output_skeleton): tempdir is const.
        bytes_read is unused.

2002-03-04  Akim Demaille  <akim@epita.fr>

        * lib/bbitset.h, lib/bitset.c, lib/bitset.h, lib/bitsetv.c,
        * lib/bitsetv.h, lib/ebitset.c, lib/lbitset.c, lib/sbitset.c:
        Update.
        From Michael Hayes.

2002-03-04  Akim Demaille  <akim@epita.fr>

        * src/closure.c (closure): `r' is unused.

2002-03-04  Akim Demaille  <akim@epita.fr>

        * tests/sets.at (Broken Closure): Add the ending `;'.
        * src/reader.at (readgram): Complain if a rule is not ended with a
        semi-colon.

2002-03-04  Akim Demaille  <akim@epita.fr>

        * src/conflicts.c (set_conflicts): Use bitset_disjoint_p.
        (count_sr_conflicts): Use bitset_count.
        * src/reduce.c (inaccessable_symbols): Ditto.
        (bits_size): Remove.
        * src/warshall.h, src/warshall.c: Convert to bitsetv.

2002-03-04  Akim Demaille  <akim@epita.fr>

        * src/closure.c, src/conflicts.c, src/lalr.c, src/print.c,
        * src/reduce.c: Remove the `bitset_zero's following the
        `bitset_create's, as now it is performed by the latter.

2002-03-04  Akim Demaille  <akim@epita.fr>

        * lib/bitset.c, lib/bitset.h, lib/bitsetv.c, lib/bitsetv.h,
        * lib/ebitset.c, lib/ebitset.h, lib/lbitset.c, lib/lbitset.h,
        * lib/sbitset.c, lib/sbitset.h, lib/bbitset.h: Update from the
        latest sources from Michael.

2002-03-04  Akim Demaille  <akim@epita.fr>

        * src/output.c (output): Don't free the grammar.
        * src/reader.c (grammar_free): New.
        * src/main.c (main): Call it and don't free symtab here.

2002-03-04  Akim Demaille  <akim@epita.fr>

        * src/lex.c (parse_percent_token): Be sure to 0-end token_buffer
        before returning.
        Reported by Benoit Perrot.

2002-03-04  Akim Demaille  <akim@epita.fr>

        Use bitset operations when possible, not loops over bits.

        * src/conflicts.c (set_conflicts, count_sr_conflicts): Use
        bitset_or.
        * src/print.c (print_reductions): Use bitset_and, bitset_andn.
        * src/reduce.c (useless_nonterminals): Formatting changes.
        * src/warshall.c (TC): Use bitset_or.

2002-03-04  Akim Demaille  <akim@epita.fr>

        * src/lalr.h, src/lalr.c (tokensetsize): Remove, unused.
        * src/system.h (BITS_PER_WORD, WORDSIZE, SETBIT, RESETBIT, BITISSET):
        Ditto.

2002-03-04  Akim Demaille  <akim@epita.fr>

        * src/lalr.c (F): Now a bitset*.
        Adjust all dependencies.

2002-03-04  Akim Demaille  <akim@epita.fr>

        * src/conflicts.c (shiftset, lookaheadset): Now bitset.
        Adjust all dependencies.

2002-03-04  Akim Demaille  <akim@epita.fr>

        * src/L0.c, src/LR0.h (nstates): Be size_t.
        Adjust comparisons (signed vs unsigned).
        * src/conflics.c, src/lalr.c, src/lalr.h, src/output.c (LA): Now a
        bitset*.
        Adjust all dependencies.

2002-03-04  Akim Demaille  <akim@epita.fr>

        * src/closure.c (firsts): Now, also a bitset.
        Adjust all dependencies.
        (varsetsize): Remove, now unused.
        * src/warshall.h, src/warshall.c: Now work on arrays of bitsets.

2002-03-04  Akim Demaille  <akim@epita.fr>

        * src/print.c: Convert to use bitset.h, not hand coded iterations
        over ints.

2002-03-04  Akim Demaille  <akim@epita.fr>

        * src/reduce.c: Convert to use bitset.h, not hand coded BSet.

2002-03-04  Akim Demaille  <akim@epita.fr>

        * src/closure.c (ruleset): Be a bitset.
        (rulesetsize): Remove.

2002-03-04  Akim Demaille  <akim@epita.fr>

        * lib/bitset-int.h, lib/bitset.c, lib/bitset.h, lib/bitsetv.c,
        * lib/bitsetv.h, lib/ebitset.c, lib/ebitset.h, lib/lbitset.c,
        * lib/lbitset.h, lib/sbitset.c, lib/sbitset.h: New.
        * src/closure.c (fderives): Be an array of bitsets.

2002-02-28  Robert Anisko  <robert@lrde.epita.fr>

        * data/bison.c++: Merge the two generated headers.  Insert a copyright
        notice in each output file.

2002-02-28  Akim Demaille  <akim@epita.fr>

        * data/bison.c++: Copy the prologue of bison.simple to fetch
        useful M4 definitions, such as b4_header_guard.

2002-02-25  Akim Demaille  <akim@epita.fr>

        * src/getargs.c (version): Give the name of the authors, and use a
        translator friendly scheme for the bgr
        copyright notice.

2002-02-25  Akim Demaille  <akim@epita.fr>

        * src/output.c (header_output): Remove, now handled completely via
        M4.

2002-02-25  Akim Demaille  <akim@epita.fr>

        * m4/m4.m4: New, from CVS Autoconf.
        * configure.in: Invoke it.
        * src/output.c (output_skeleton): Use its result instead of the
        hard coded name.

2002-02-25  Akim Demaille  <akim@epita.fr>

        * lib/tempname.c, lib/mkstemp.c, m4/mkstemp.m4: New, stolen from
        Fileutils 4.1.5.
        * configure.in: Invoke UTILS_FUNC_MKSTEMP.
        * src/output.c (output_skeleton): Use mkstemp to create a real
        temporary file.
        Move the filling of `skeleton' and its muscle to...
        (prepare): here.
        (output): Move the definition of the prologue muscle to...
        (prepare): here.
        * src/system.h (DEFAULT_TMPDIR): New.

2002-02-14  Paul Eggert  <eggert@twinsun.com>

        Remove the support for C++ namespace cleanliness; it was
        causing more problems than it was curing, since it didn't work
        properly on some nonstandard C++ compilers.  This can wait
        for a proper C++ parser.

        * NEWS: Document this.
        * doc/bison.texinfo (Bison Parser, Debugging): Remove special mention
        of C++, as it's treated like C now.
        * src/bison.simple (YYSTD): Remove.
        (YYSIZE_T, YYFPRINTF, YYPARSE_PARAM_ARG, YYPARSE_PARAM_DECL):
        Treat C++ just like Standard C instead of trying to support
        namespace cleanliness.

2002-02-14  Akim Demaille  <akim@epita.fr>

        * tests/regression.at (else): Adjust to Andreas' change.

2002-02-14  Akim Demaille  <akim@epita.fr>

        * lib/Makefile.am (EXTRA_DIST): Ship strnlen.c.

2002-02-13  Andreas Schwab  <schwab@suse.de>

        * src/output.c (output_rule_data): Don't output NULL, it might
        not be defined yet.

2002-02-11  Robert Anisko  <robert@lrde.epita.fr>

        * data/bison.c++ (YYDEBUG, YYERROR_VERBOSE): After the prologue.
        (Copyright notice): Update.

2002-02-11  Akim Demaille  <akim@epita.fr>

        * tests/regression.at (%nonassoc and eof): Don't include
        nonportable headers.

2002-02-08  Robert Anisko  <robert@lrde.epita.fr>

        * data/bison.c++: Correct error recovery.  Make the user able to
        initialize the starting location.

2002-02-07  Akim Demaille  <akim@epita.fr>

        * tests/input.at: New.

2002-02-07  Robert Anisko  <robert@lrde.epita.fr>

        * data/bison.c++: Replace some direct m4 expansions by constants.  Be
        more consistent when naming methods and variables.  Put preprocessor
        directives around tables only needed for debugging.

2002-02-07  Robert Anisko  <robert@lrde.epita.fr>

        * data/bison.c++ (yy::b4_name::print_): New method, replaces yyprint in
        C++ parsers.
        (yy::b4_name::parse): Use print_.

2002-02-07  Robert Anisko  <robert@lrde.epita.fr>

        * data/bison.c++ (yy::b4_name::parse): Error recovery is back.

2002-02-07  Robert Anisko  <robert@lrde.epita.fr>

        * data/bison.c++ (yy::b4_name::error_): New method, replaces yyerror in
        C++ parsers.
        (yy::b4_name::parse): Build verbose error messages, and use error_.

2002-02-06  Robert Anisko  <robert@lrde.epita.fr>

        * data/bison.c++: Fix m4 quoting in comments.

2002-02-06  Robert Anisko  <robert@lrde.epita.fr>

        * data/bison.c++: Adjust the parser code.  Fix some muscles that were
        not expanded by m4.

2002-02-05  Akim Demaille  <akim@epita.fr>

        * data/bison.c++: Adjust to the M4 back end.
        More is certainly needed.

2002-02-05  Akim Demaille  <akim@epita.fr>

        Give a try to M4 as a back end.

        * lib/readpipe.c: New, from wdiff.
        * src/Makefile.am (DEFS): Define PKGDATADIR, not BISON_SIMPLE and
        BISON_HAIRY.
        * src/system.h (BISON_HAIRY, BISON_SIMPLE): Remove the DOS and VMS
        specific values.  Now it is m4 that performs the lookup.
        * src/parse-skel.y: Remove.
        * src/muscle_tab.c, src/muscle_tab.h (muscles_m4_output): New.
        * src/output.c (actions_output, guards_output)
        (token_definitions_output): No longer keeps track of the output
        line number, hence remove the second argument.
        (guards_output): Check against the guard member of a rule, not the
        action member.
        Adjust callers.
        (output_skeleton): Don't look for the skeleton location, let m4 do
        that.
        Create `/tmp/muscles.m4'.  This is temporary, a proper temporary
        file will be used.
        Invoke `m4' on m4sugar.m4, muscles.m4, and the skeleton.
        (prepare): Given that for the time being changesyntax is not
        usable in M4, rename the muscles using `-' to `_'.
        Define `defines_flag', `output_parser_name' and `output_header_name'.
        * src/output.h (actions_output, guards_output)
        (token_definitions_output): Adjust prototypes.
        * src/scan-skel.l: Instead of scanning the skeletons, it now
        processes the output of m4: `__oline__' and `#output'.
        * data/bison.simple: Adjust to be used by M4(sugar).
        * tests/Makefile.am: Use check_SCRIPTS to make sure `bison' is up
        to date.
        * tests/bison.in: Use the secrete envvar `BISON_PKGDATADIR'
        instead of the dead `BISON_SIMPLE' and `BISON_HAIRY'.
        * data/m4sugar/m4sugar.m4, data/m4sugar/version.m4: New,
        shamelessly stolen from CVS Autoconf.

2002-02-05  Akim Demaille  <akim@epita.fr>

        * lib/hash.c, lib/hash.h: Replace with Fileutils 4.1's version.
        * configure.in: Check for the declarations of free and malloc.
        * src/muscle_tab.c: Adjust.

2002-02-05  Akim Demaille  <akim@epita.fr>

        * src/muscle_tab.c (muscle_init): Don't default to NULL muscle
        which have no values.

2002-02-05  Akim Demaille  <akim@epita.fr>

        * src/bison.simple, src/bison.hairy, src/bison.c++: Move to...
        * data/: here.

2002-01-29  Paul Eggert  <eggert@twinsun.com>

        * src/bison.simple (YYSIZE_T): Do not define merely because
        YYSTACK_USE_ALLOCA is nonzero or alloca or _ALLOCA_H are defined.
        On some platforms, <alloca.h> does not declare YYSTD (size_t).

2002-01-27  Akim Demaille  <akim@epita.fr>

        Fix `%nonassoc and eof'.

        * src/state.c (errs_dup): Aaaah!  The failure was due to bytes
        which were not properly copied!  Replace
        memcpy (res->errs, src->errs, src->nerrs);
        with
        memcpy (res->errs, src->errs, src->nerrs * sizeof (src->errs[0]));
        !!!
        * tests/regression.at (%nonassoc and eof): Adjust to newest
        Autotest: `.' is not in the PATH.

2002-01-27  Akim Demaille  <akim@epita.fr>

        * tests/sets.at (AT_EXTRACT_SETS): New.
        (Nullable): Use it.
        (Firsts): New.

2002-01-26  Akim Demaille  <akim@epita.fr>

        * tests/actions.at, tests/calc.at, tests/headers.at,
        * tests/torture.at: Adjust to the newest Autotest which no longer
        forces `.' in the PATH.

2002-01-25  Akim Demaille  <akim@epita.fr>

        * tests/regression.at (%nonassoc and eof): New.
        Suggested by Robert Anisko.

2002-01-24  Akim Demaille  <akim@epita.fr>

        Bison dumps core when trying to complain about broken input files.
        Reported by Cris van Pelt.

        * src/lex.c (parse_percent_token): Be sure to set token_buffer.
        * tests/regression.at (Invalid input: 1, Invalid input: 2): Merge
        into...
        (Invalid inputs): Strengthen: exercise parse_percent_token.

2002-01-24  Robert Anisko  <robert.anisko@epita.fr>

        * src/Makefile.am: Add bison.c++.
        * src/bison.c++: New skeleton.

2002-01-21  Paolo Bonzini <bonzini@gnu.org>

        * po/it.po: New.

2002-01-21  Kees Zeelenberg  <kzlg@users.sourceforge.net>

        * src/files.c (skeleton_find) [MSDOS]: Fix cp definition.

2002-01-20  Marc Autret  <marc@gnu.org>

        * src/files.c (compute_output_file_names): Fix

2002-01-20  Marc Autret  <marc@gnu.org>

        * tests/output.at: New test.
        * src/files.c (compute_base_names): Don't map extensions when
        the YACC flag is set, use defaults.
        Reported by Evgeny Stambulchik.

2002-01-20  Marc Autret  <marc@gnu.org>

        * src/system.h: Need to define __attribute__ away for non-GCC
        compilers as well (i.e. the vendor C compiler).
        Suggested by Albert Chin-A-Young.

2002-01-11  Tim Van Holder  <tim.van.holder@pandora.be>

        * lib/hash.h, lib/hash.c: Renamed __P to PARAMS and used the
        canonical definition.
        * src/system.h: Use the canonical definition for PARAMS (avoids
        a conflict with the macro from lib/hash.h).

2002-01-11  Akim Demaille  <akim@epita.fr>

        * configure.in: Use AC_FUNC_STRNLEN.
        Fixes the failures observed on AIX 4.3 by H.Merijn Brand.

2002-01-09  Akim Demaille  <akim@epita.fr>

        * src/files.c, src/files.h (output_infix): New.
        (tab_extension): Remove.
        (compute_base_names): Compute the former, drop the latter.
        * src/output.c (prepare): Insert the muscles `output-infix', and
        `output-suffix'.
        * src/parse-skel.y (string, string.1): New.
        (section.header): Use it.
        (section.yacc): Remove.
        (prefix): Remove too.
        * src/scan-skel.l: Adjust.
        * src/bison.simple, src/bison.hairy: Adjust.

2002-01-09  Akim Demaille  <akim@epita.fr>

        * configure.in (WERROR_CFLAGS): Compute it.
        * src/Makefile.am (CFLAGS): Pass it.
        * tests/atlocal.in (CFLAGS): Idem.
        * src/files.c: Fix a few warnings.
        (get_extension_index): Remove, unused.

2002-01-08  Akim Demaille  <akim@epita.fr>

        * src/getargs.c (AS_FILE_NAME): New.
        (getargs): Use it to convert DOSish file names.
        * src/files.c (base_name): Rename as full_base_name to avoid
        clashes with `base_name ()'.
        (filename_split): New.
        (compute_base_names): N-th rewrite, using filename_split.

2002-01-08  Akim Demaille  <akim@epita.fr>

        * lib/basename.c, lib/dirname.h, lib/dirname.c, lib/memrchr.c:
        New, stolen from the Fileutils 4.1.
        * lib/Makefile.am (libbison_a_SOURCES): Adjust.
        * configure.in: Check for the presence of memrchr, and of its
        prototype.

2002-01-07  Tim Van Holder  <tim.van.holder@pandora.be>

        * lib/hash.h (__P): Added definition for this macro.
        * src/Makefile.am: Add parse-skel.c and scan-skel.c to
        BUILT_SOURCES, to ensure they are generated first.
        * src/parse-skel.y: Use YYERROR_VERBOSE instead of
        %error-verbose to allow bootstrapping with bison 1.30x.

2002-01-06  Akim Demaille  <akim@epita.fr>

        * src/reader.c (parse_braces): Don't fetch the next char, the
        convention is to fetch on entry.
        * tests/torture.at (GNU Cim Grammar): Reintroduce their weird
        'switch' without a following semicolon.
        * tests/regression.at (braces parsing): New.

2002-01-06  Akim Demaille  <akim@epita.fr>

        Bison is dead wrong in its RR conflict reports.

        * tests/torture.at (GNU Cim Grammar): New.
        * src/conflicts.c (count_rr_conflicts): Fix.

2002-01-06  Akim Demaille  <akim@epita.fr>

        Creating package.m4 from configure.ac causes too many problems.

        * tests/Makefile.am (package.m4): Create it by hand,
        AC_CONFIG_TESTDIR no longer does in the most recent CVS Autoconf.

2002-01-06  Akim Demaille  <akim@epita.fr>

        * src/Makefile.am (bison_SOURCES): Add parse-skel.h and
        skeleton.h.

2002-01-04  Paul Eggert  <eggert@twinsun.com>

        * doc/bison.texinfo (Debugging):
        Remove YYSTDERR; it's no longer defined or used.
        Also, s/cstdio.h/cstdio/.

2002-01-03  Akim Demaille  <akim@epita.fr>

        * tests/bison.in, tests/atlocal.in: Adjust to CVS Autoconf.

2002-01-03  Akim Demaille  <akim@epita.fr>

        * src/parse-skel.y (process_skeleton): Don't bind the parser's
        tracing code to --trace, wait for a better --trace option, with
        args.

2002-01-03  Akim Demaille  <akim@epita.fr>

        * src/bison.simple (YYSTDERR): Remove, replace `stderr'.
        The ISO C++ standard is extremely clear about it: stderr is
        considered a macro, not a regular symbol (see table 94 `Header
        <cstdio> synopsis', [lib.c.files] 27.8.2 C Library files).
        Therefore std:: does not apply to it.  It still does with fprintf.
        Also, s/cstdio.h/cstdio/.

2002-01-03  Akim Demaille  <akim@epita.fr>

        * lib/quotearg.c: Use `#include "..."' instead of `#include <...>'
        for non system headers.

2002-01-02  Akim Demaille  <akim@epita.fr>

        Equip the skeleton chain with location tracking, runtime trace,
        pure parser and scanner.

        * src/parse-skel.y: Request a pure parser, locations, and prefix
        renaming.
        (%union): Having several members with the same type does not help
        type mismatches, simplify.
        (YYPRINT, yyprint): New.
        (yyerror): ``Rename'' (there is a #define yyerror skel_error) as...
        (skel_error): this.
        Handle locations.
        * src/scan-skel.l: Adjust to these changes.
        * src/skeleton.h (LOCATION_RESET, LOCATION_LINES, LOCATION_STEP)
        (LOCATION_PRINT, skel_control_t): New.

2001-12-30  Akim Demaille  <akim@epita.fr>

        * src/parse-skel.y: Get rid of the shift/reduce conflict:
        replace `gb' with BLANKS.
        * src/scan-skel.l: Adjust.

2001-12-30  Akim Demaille  <akim@epita.fr>

        * src/system.h: We don't need nor want bcopy.
        Throw away MS-DOS crap: we don't need getpid.
        * configure.in: We don't need strndup.  It was even causing
        problems: because Flex includes the headers *before* us,
        _GNU_SOURCE is not defined by config.h, and therefore strndup was
        not visible.
        * lib/xstrndup.c: New.
        * src/scan-skel.l: Use it.
        Be sure to initialize yylval.muscle member when scanning a MUSCLE.
        * src/parse-skel.y: Use %directives instead of #defines.

2001-12-30  Akim Demaille  <akim@epita.fr>

        * src/skeleton.h: New.
        * src/output.c (output_parser, output_master_parser): Remove, dead
        code.
        * src/output.h (get_lines_number, actions_output, guards_output)
        (token_definitions_output): Prototype them.
        * src/parse-skel.y: Add the license notice.
        Include output.h and skeleton.h.
        (process_skeleton): Returns void, and takes a single parameter.
        * src/scan-skel.l: Add the license notice.
        Include skeleton.h.
        Don't use %option yylineno: it seems that then Flex imagines
        REJECT has been used, and therefore it won't reallocate its
        buffers (which makes no other sense to me than a bug).  It results
        in warnings for `unused: yy_flex_realloc'.

2001-12-30  Robert Anisko  <robert.anisko@epita.fr>

        * src/muscle_tab.h (MUSCLE_INSERT_INT, MUSCLE_INSERT_STRING)
        (MUSCLE_INSERT_PREFIX): ...to there.
        * src/output.c (MUSCLE_INSERT_INT, MUSCLE_INSERT_STRING)
        (MUSCLE_INSERT_PREFIX): Move from here...

        * src/bison.hairy: Add a section directive.  Put braces around muscle
        names.  This parser skeleton is still broken, but Bison should not
        choke on a bad muscle 'syntax'.
        * src/bison.simple: Add a section directive.  Put braces around muscle
        names.

        * src/files.h (strsuffix, stringappend): Add declarations.
        (tab_extension): Add declaration.
        (short_base_name): Add declaration.

        * src/files.c (strsuffix, stringappend): No longer static.  These
        functions are used in the skeleton parser.
        (tab_extension): New.
        (compute_base_names): Use the computations done in this function
        to guess if the generated parsers should have '.tab' in their
        names.
        (short_base_name): No longer static.

        * src/output.c (output_skeleton): New.
        (output): Disable call to output_master_parser, and give a try to
        a new skeleton handling system.
        (guards_output, actions_output): No longer static.
        (token_definitions_output, get_lines_number): No longer static.

        * configure.in: Use AM_PROG_LEX and AC_PROG_YACC.

        * src/Makefile.am (bison_SOURCES): Add scan-skel.l and
        parse-skel.y.

        * src/parse-skel.y: New file.
        * src/scan-skel.l: New file.

2001-12-29  Akim Demaille  <akim@epita.fr>

        %name-prefix is broken.

        * src/files.c (spec_name_prefix): Initialize to NULL, not to "yy".
        Adjust all dependencies.
        * tests/headers.at (export YYLTYPE): Strengthen this test: use
        %name-prefix.

        Renaming yylval but not yylloc is not consistent.  Now we do.

        * src/bison.simple: Prefix yylloc if used.
        * doc/bison.texinfo (Decl Summary): Document that.

2001-12-29  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo: Promote `%long-directive' over
        `%long_directive'.
        Remove all references to fixed-output-files, yacc is enough.

2001-12-29  Akim Demaille  <akim@epita.fr>

        * src/bison.simple: Define YYDEBUG and YYERROR_VERBOSE *after* the
        user prologue.  These are defaults.
        * tests/actions.at (Mid-rule actions): Make sure the user can
        define YYDEBUG and YYERROR_VERBOSE.

2001-12-29  Akim Demaille  <akim@epita.fr>

        * src/output.c (header_output): Don't forget to export YYLTYPE and
        yylloc.
        * tests/headers.at (export YYLTYPE): New, make sure it does.
        * tests/regression.at (%union and --defines, Invalid CPP headers):
        Move to...
        * tests/headers.at: here.

2001-12-29  Akim Demaille  <akim@epita.fr>

        * src/gram.h (rule_s): Member `assoc' is of type `associativity'.

2001-12-29  Akim Demaille  <akim@epita.fr>

        * tests/actions.at (Mid-rule actions): Output on a single line
        instead of several.

2001-12-29  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo: Formatting changes.

2001-12-29  Akim Demaille  <akim@epita.fr>

        Don't store the token defs in a muscle, just be ready to output it
        on command.  Now possible via `symbols'.  Fixes a memory leak.

        * src/output.c (token_definitions_output): New.
        (output_parser, header_output): Use it.
        * src/reader.c (symbols_save): Remove.

2001-12-29  Akim Demaille  <akim@epita.fr>

        * src/bison.simple: Do not provide a default for YYSTYPE and
        YYLTYPE before the user's prologue.  Otherwise it's hardly... a
        default.

2001-12-29  Akim Demaille  <akim@epita.fr>

        Mid-rule actions are simply... ignored!

        * src/reader.c (readgram): Be sure to attach mid-rule actions to
        the empty-rule associated to the dummy symbol, not to the host
        rule.
        * tests/actions.at (Mid-rule actions): New.

2001-12-29  Akim Demaille  <akim@epita.fr>

        Memory leak.

        * src/reader.c (reader): Free grammar.

2001-12-29  Akim Demaille  <akim@epita.fr>

        Memory leak.

        * src/LR0.c (new_itemsets): Don't allocate `shift_symbol' here,
        since it allocates it for each state, although only one is needed.
        (allocate_storage): Do it here.

2001-12-29  Akim Demaille  <akim@epita.fr>

        * src/options.h, src/options.c (create_long_option_table): Rename
        as...
        (long_option_table_new): this, with a clearer prototype.
        (percent_table): Remove, unused,
        * src/getargs.c (getargs): Adjust.

2001-12-29  Akim Demaille  <akim@epita.fr>

        * src/LR0.c, src/conflicts.c, src/lalr.c, src/lalr.h, src/output.c
        * src/print.c, src/print_graph.c, src/state.h: Rename state_table
        as states.

2001-12-29  Akim Demaille  <akim@epita.fr>

        * src/lalr.c (build_relations): Rename `states' as `states1'.
        Sorry, I don't understand exactly what it is, no better name...

2001-12-29  Akim Demaille  <akim@epita.fr>

        * src/closure.c, src/conflicts.c, src/derives.c, src/gram.c
        * src/gram.h, src/lalr.c, src/nullable.c, src/output.c, src/print.c
        * src/print_graph.c, src/reader.c, src/reduce.c: Rename rule_table
        as rules.

2001-12-29  Akim Demaille  <akim@epita.fr>

        * src/gram.c (rprec, rprecsym, rassoc): Remove, unused since long
        ago.

2001-12-29  Akim Demaille  <akim@epita.fr>

        * src/reader.c, src/reader.h (user_toknums): Remove.
        Adjust all users to use symbols[i]->user_token_number.

2001-12-29  Akim Demaille  <akim@epita.fr>

        * src/gram.c, src/gram.h (sprec, sassoc): Remove.
        Adjust all users to use symbols[i]->prec or ->assoc.

2001-12-29  Akim Demaille  <akim@epita.fr>

        * src/reader.c, src/reader.h (tags): Remove.
        Adjust all users to use symbols[i]->tag.

2001-12-29  Akim Demaille  <akim@epita.fr>

        * src/gram.h, src/gram.c (symbols): New, similar to state_table
        and rule_table.
        * src/reader.c (packsymbols): Fill this table.
        Drop sprec.
        * src/conflicts.c (resolve_sr_conflict): Adjust.
        * src/reduce.c (reduce_grammar): Adjust: just sort symbols, a
        single table.
        Use symbols[i]->tag instead of tags[i].

2001-12-29  Akim Demaille  <akim@epita.fr>

        * tests/calc.at (_AT_DATA_CALC_Y): Also use %union.
        In addition, put a comment in there, to replace...
        * tests/regression.at (%union and C comments): Remove.

2001-12-29  Akim Demaille  <akim@epita.fr>

        * tests/regression.at (Web2c Actions): Blindly move the actual
        output as expected output.  The contents *seem* right to me, but I
        can't pretend reading perfectly parser tables...  Nonetheless, all
        the other tests pass correctly, the table look OK, even though the
        presence of `$axiom' is to be noted: AFAICS it is useless (but
        harmless).

2001-12-29  Akim Demaille  <akim@epita.fr>

        * src/reader.c (readgram): Don't add the rule 0 if there were no
        rules read.  In other words, add it _after_ having performed
        grammar sanity checks.
        Fixes the `tests/regression.at (Invalid input: 1)' Failure.

2001-12-29  Akim Demaille  <akim@epita.fr>

        * tests/regression.at (Web2c Report): Catch up: the rule 0 is now
        visible, and some states have now a different number.

2001-12-29  Akim Demaille  <akim@epita.fr>

        * src/reader.c (readgram): Bind the initial rule's lineno to that
        of the first rule.
        * tests/regression.at (Rule Line Numbers, Unresolved SR Conflicts):
        (Solved SR Conflicts): Adjust rule 0's line number.

2001-12-29  Akim Demaille  <akim@epita.fr>

        Fix the `GAWK Grammar' failure.

        * src/LR0.c (final_state): Initialize to -1 so that we do compute
        the reductions of the first state which was mistakenly confused
        with the final state because precisely final_state was initialized
        to 0.
        * tests/sets.at (Nullable): Adjust: state 0 does have lookaheads,
        now noticed by Bison.
        * tests/regression.at (Rule Line Numbers): Adjust: state 0 does
        have a reduction on $default.

2001-12-29  Akim Demaille  <akim@epita.fr>

        * src/gram.c (ritem_print): Be sure to subtract 1 when displaying
        rule line numbers.
        * src/closure.c (print_closure): Likewise.
        * src/derives.c (print_derives): Likewise.
        * tests/sets.at (Nullable): Adjust: the rule numbers are correct
        now.

2001-12-29  Akim Demaille  <akim@epita.fr>

        * src/lalr.c (lookaheads_print): New.
        (lalr): Call it when --trace-flag.
        * tests/sets.at (Nullable): Adjust: when tracing, the lookaheads
        are dumped.

2001-12-29  Akim Demaille  <akim@epita.fr>

        * src/derives.c (print_derives): Be sure to use `>= 0', not `> 0',
        when walking through ritem, even via rule->rhs.
        * src/reduce.c (dump_grammar, useful_production, reduce_output)
        (useful_production, useless_nonterminals): Likewise.
        (reduce_grammar_tables): Likewise, plus update nritems.
        * src/nullable.c (set_nullable): Likewise.
        * src/lalr.c (build_relations): Likewise.
        * tests/sets.at (Nullable): Adjust.
        Fortunately, now, the $axiom is no longer nullable.

2001-12-29  Akim Demaille  <akim@epita.fr>

        * src/LR0.c (generate_states): Use nritems, not nitems, nor using
        the 0-sentinel.
        * src/gram.c (ritem_longest_rhs): Likewise.
        * src/reduce.c (nonterminals_reduce): Likewise.
        * src/print_graph.c (print_graph): Likewise.
        * src/output.c (output_rule_data): Likewise.
        * src/nullable.c (set_nullable):  Likewise.

2001-12-29  Akim Demaille  <akim@epita.fr>

        * src/output.c: Comment changes.

2001-12-27  Paul Eggert  <eggert@twinsun.com>

        * src/bison.simple (YYSTACK_ALLOC, YYSIZE_T): Remove special
        cases for non-GNU systems like AIX, HP-UX, SGI, Sun, and
        Sparc, as they were causing more porting problems than the
        (minor) performance improvement was worth.

        Also, catch up with 1.31's YYSTD.

2001-12-27  Akim Demaille  <akim@epita.fr>

        * src/output.c (output_gram): Rely on nritems, not the
        0-sentinel.  See below.
        Use -1 as separator, not 0.
        * src/bison.simple (yyparse): Subtract 1 to the rule numbers.
        Rely on -1 as separator in yyrhs, instead of 0.
        * tests/calc.at (AT_CHECK_CALC): Now, the parsers no longer issue
        twice `Now at end of input', therefore there are two lines less to
        expect.

2001-12-27  Akim Demaille  <akim@epita.fr>

        * tests/regression.at (Unresolved SR Conflicts):
        (Solved SR Conflicts, Rule Line Numbers): Adjust to the changes
        below.

2001-12-27  Akim Demaille  <akim@epita.fr>

        * src/LR0.c (new_state): Recognize the final state by the fact it
        is reached by eoftoken.
        (insert_start_shifting_state, insert_eof_shifting_state)
        (insert_accepting_state, augment_automaton): Remove, since now
        these states are automatically computed from the initial state.
        (generate_states): Adjust.
        * src/print.c: When reporting a rule number to the user, substract
        1, so that the axiom rule is rule 0, and the first user rule is 1.
        * src/reduce.c: Likewise.
        * src/print_graph.c (print_core): For the time being, just as for
        the report, depend upon --trace-flags to dump the full set of
        items.
        * src/reader.c (readgram): Once the grammar read, insert the rule
        0: `$axiom: START-SYMBOL $'.
        * tests/set.at: Adjust: rule 0 is now displayed, and since the
        number of the states has changed (the final state is no longer
        necessarily the last), catch up.

2001-12-27  Akim Demaille  <akim@epita.fr>

        Try to make the use of the eoftoken valid.  Given that its value
        is 0 which was also used as a sentinel in ritem, (i) make sure >= 0
        is used instead of > 0 where appropriate, (ii), depend upon nritems
        instead of the 0-sentinel.

        * src/gram.h, src/gram.c (nritems): New.
        Expected to be duplication of nitems, but for the time being...
        * src/reader.c (packgram): Assert nritems and nitems are equal.
        * src/LR0.c (allocate_itemsets, new_itemsets): Adjust.
        * src/closure.c (print_closure, print_fderives): Likewise.
        * src/gram.c (ritem_print): Likewise.
        * src/print.c (print_core, print_grammar): Likewise.
        * src/print_graph.c: Likewise.

2001-12-27  Akim Demaille  <akim@epita.fr>

        * src/main.c (main): If there are complains after grammar
        reductions, then output the report anyway if requested, then die.
        * src/symtab.c (bucket_new): Initialize `value' to -1, not 0.
        * src/reader.c (eoftoken): New.
        (parse_token_decl): If the token being defined has value `0', it
        is the eoftoken.
        (packsymbols): No longer hack `tags' to insert `$' by hand.
        Be sure to preserve the value of the eoftoken.
        (reader): Make sure eoftoken is defined.
        Initialize nsyms to 0: now eoftoken is created just like the others.
        * src/print.c (print_grammar): Don't special case the eof token.
        * src/regression.at: Adjust: `$' has value 0, not -1, which was a
        lie anyway, albeit pleasant.
        * tests/calc.at: Exercise error messages with eoftoken.
        Change the grammar so that empty input is invalid.
        Adjust expectations.
        When yyungeting, be sure to use a valid yylloc: use last_yylloc.

2001-12-27  Akim Demaille  <akim@epita.fr>

        * configure.in: Check the protos of strchr ans strspn.
        Replace strchr if needed.
        * src/system.h: Provide the protos of strchr, strspn and memchr if
        missing.
        * lib/strchr.c: New.
        * src/reader.c (symbols_save): Use strchr.

2001-12-27  Akim Demaille  <akim@epita.fr>

        * src/print.c, src/print_graph.c (escape): New.
        Use it to quote the TAGS outputs.
        * src/print_graph.c (print_state): Now errors are in red, and
        reductions in green.
        Prefer high to wide: output the state number on a line of its own.

2001-12-27  Akim Demaille  <akim@epita.fr>

        * src/state.h, src/state.c (reductions_new): New.
        * src/LR0.c (set_state_table): Let all the states have a
        `reductions', even if reduced to 0.
        (save_reductions): Adjust.
        * src/lalr.c (initialize_LA, initialize_lookaheads): Adjust.
        * src/print.c (print_reductions, print_actions): Adjust.
        * src/output.c (action_row): Adjust.

2001-12-27  Akim Demaille  <akim@epita.fr>

        * src/state.h, src/state.c (errs_new, errs_dup): New.
        * src/LR0.c (set_state_table): Let all the states have an errs,
        even if reduced to 0.
        * src/print.c (print_errs, print_reductions): Adjust.
        * src/output.c (output_actions, action_row): Adjust.
        * src/conflicts.c (resolve_sr_conflict): Adjust.

2001-12-27  Akim Demaille  <akim@epita.fr>

        * src/lalr.c (set_goto_map, initialize_F): Use SHIFT_SYMBOL.

2001-12-27  Akim Demaille  <akim@epita.fr>

        * src/conflicts.c, src/conflicts.h (print_reductions): Move to...
        * src/print.c: here.
        (lookaheadset, shiftset): New, used as additional storage by
        print_reductions.
        (print_results): Adjust.
        (print_shifts, print_gotos, print_errs): New, extracted from...
        (print_actions): here.
        * src/print_graph.c (print_actions): Remove dead code.

2001-12-27  Akim Demaille  <akim@epita.fr>

        * src/reader.c (copy_dollar, copy_at): Better checking of `n' in
        `$n' and `@n'.

2001-12-27  Akim Demaille  <akim@epita.fr>

        * src/lalr.c (add_lookback_edge): Use state_t instead of ints.
        (build_relations): Adjust.

2001-12-27  Akim Demaille  <akim@epita.fr>

        * src/lalr.c (set_goto_map): Remove a wrong but benign loop
        duplication.

2001-12-27  Akim Demaille  <akim@epita.fr>

        * src/reader.c (packgram): Catch nitems overflows.

2001-12-27  Akim Demaille  <akim@epita.fr>

        * src/files.c, src/files.h (guard_obstack): Remove.
        * src/output.c (output): Adjust.
        * src/reader.c (parse_braces): New, factoring...
        (copy_action, copy_guard): these two which are renamed as...
        (parse_action, parse_guard): these.
        As a voluntary consequence, using braces around guards is now
        mandatory.

2001-12-27  Akim Demaille  <akim@epita.fr>

        * src/gram.h (rule_t): `guard' and `guard_line' are new members.
        * src/reader.c (symbol_list): `guard' and `guard_line' are new
        members.
        (symbol_list_new): Adjust.
        (copy_action): action_line is the first line, not the last.
        (copy_guard): Just as for actions, store the `action' only, not
        the switch/case/break flesh.
        Don't parse the user action that might follow the guard, let...
        (readgram): do it, i.e., now, there can be an action after a
        guard.
        In other words the guard is just explicitly optional.
        (packgram): Adjust.
        * src/output.c (guards_output): New.
        (output_parser): Call it when needed.
        (output): Also free the guard and attrs obstacks.
        * src/files.c, src/files.h (obstack_save): Remove.
        (output_files): Remove.
        As a result, if one needs the former `.act' file, using an
        appropriate skeleton which requires actions and guards is now
        required.
        * src/main.c (main): Adjust.
        * tests/semantic.at: New.
        * tests/regression.at: Use `input.y' as input file name.
        Avoid 8+3 problems by requiring input.c when the test needs the
        parser.

2001-12-27  Akim Demaille  <akim@epita.fr>

        * src/reader.c (symbol_list_new): Be sure to initialize all the
        fields.

2001-12-27  Akim Demaille  <akim@epita.fr>

        All the hacks using a final pseudo state are now useless.

        * src/LR0.c (set_state_table): state_table holds exactly nstates.
        * src/lalr.c (nLA): New.
        (initialize_LA, compute_lookaheads, initialize_lookaheads): Use it
        instead of lookaheadsp from the pseudo state (nstate + 1).

2001-12-27  Akim Demaille  <akim@epita.fr>

        * src/output.c (action_row, token_actions): Use a state_t instead
        of a integer, and nlookaheads instead of the following state's
        lookaheadsp.

2001-12-27  Akim Demaille  <akim@epita.fr>

        * src/conflicts.c (log_resolution, flush_shift)
        (resolve_sr_conflict, set_conflicts, solve_conflicts)
        (count_sr_conflicts, count_rr_conflicts, conflicts_output)
        (conflicts_print, print_reductions): Use a state_t instead of an
        integer when referring to a state.
        As much as possible, depend upon nlookaheads, instead of the
        `lookaheadsp' member of the following state (since lookaheads of
        successive states are successive, the difference between state n + 1
        and n served as the number of lookaheads for state n).
        * src/lalr.c (add_lookback_edge): Likewise.
        * src/print.c (print_core, print_actions, print_state)
        (print_results): Likewise.
        * src/print_graph.c (print_core, print_actions, print_state)
        (print_graph): Likewise.
        * src/conflicts.h: Adjust.

2001-12-27  Akim Demaille  <akim@epita.fr>

        * src/bison.hairy: Formatting/comment changes.
        ANSIfy.
        Remove `register' indications.
        Add plenty of `static'.

2001-12-27  Akim Demaille  <akim@epita.fr>

        * src/output.c (prepare): Drop the muscle `ntbase' which
        duplicates ntokens.
        * src/bison.simple: Formatting/comment changes.
        Use YYNTOKENS only, which is documented, but not YYNTBASE, which
        is an undocumented synonym.

2001-12-22  Akim Demaille  <akim@epita.fr>

        * src/output.c (output_table_data): Change the prototype to use
        `int' for array ranges: some invocations do pass an int, not a
        short.
        Reported by Wayne Green.

2001-12-22  Akim Demaille  <akim@epita.fr>

        Some actions of web2c.y are improperly triggered.
        Reported by Mike Castle.

        * src/lalr.c (traverse): s/F (i)[k] = F (j)[k]/F (j)[k] = F (i)[k]/.
        * tests/regression.at (Web2c): Rename as...
        (Web2c Report): this.
        (Web2c Actions): New.

2001-12-22  Akim Demaille  <akim@epita.fr>

        Reductions in web2c.y are improperly reported.
        Reported by Mike Castle.

        * src/conflicts.c (print_reductions): Fix.
        * tests/regression.at (Web2c): New.

2001-12-18  Akim Demaille  <akim@epita.fr>

        Some host fail on `assert (!"foo")', which expands to
        ((!"foo") ? (void)0 : __assert("!"foo."", __FILE__, __LINE__))
        Reported by Nelson Beebee.

        * src/output.c, src/vcg.c: Replace `assert (!"it succeeded")' with
        `#define it_succeeded 0' and `assert (it_succeeded)'.

2001-12-17  Marc Autret  <autret_m@epita.fr>

        * src/bison.simple: Don't hard code the skeleton line and filename.
        * src/output.c (output_parser): Rename 'line' as 'output_line'.
        New line counter 'skeleton_line' (skeleton-line muscle).

2001-12-17  Paul Eggert  <eggert@twinsun.com>

        * NEWS, doc/bison.texinfo, doc/bison.1, doc/bison.rnh: Document that
        YYDEBUG must be defined to a nonzero value.

        * src/bison.simple (yytname): Do not assume that the user defines
        YYDEBUG to a properly parenthesized expression.

2001-12-17  Akim Demaille  <akim@epita.fr>

        * src/state.h (state_t): Rename lookaheads as lookaheadsp.
        nlookaheads is a new member.
        Adjust all users.
        * src/lalr.h (nlookaheads): Remove this orphan declaration.
        * src/lalr.c (initialize_lookaheads): Set nlookaheads for each
        state.

2001-12-17  Akim Demaille  <akim@epita.fr>

        * src/files.h, src/files.c (open_files, close_files): Remove.
        * src/main.c (main): Don't open/close files, nor invoke lex_free,
        let...
        * src/reader.c (reader): Do it.

2001-12-17  Akim Demaille  <akim@epita.fr>

        * src/conflicts.c (print_reductions): Formatting changes.

2001-12-17  Akim Demaille  <akim@epita.fr>

        * src/conflicts.c (flush_shift): Also adjust lookaheadset.
        (flush_reduce): New.
        (resolve_sr_conflict): Adjust.

2001-12-17  Akim Demaille  <akim@epita.fr>

        * src/output.c (output_obstack): Be static and rename as...
        (format_obstack): this, to avoid any confusion with files.c's
        output_obstack.
        * src/reader.h (muscle_obstack): Move to...
        * src/output.h: here, since it's defined in output.c.

2001-12-17  Akim Demaille  <akim@epita.fr>

        * src/output.c (action_row, save_column, default_goto)
        (sort_actions, matching_state, pack_vector): Better variable
        locality.

2001-12-17  Akim Demaille  <akim@epita.fr>

        * src/output.c: Various formatting changes.

2001-12-17  Akim Demaille  <akim@epita.fr>

        * src/files.c (output_files): Free the output_obstack.
        * src/main.c (main): Call print and print_graph conditionally.
        * src/print.c (print): Work unconditionally.
        * src/print_graph.c (print_graph): Work unconditionally.
        * src/conflicts.c (log_resolution): Output only if verbose_flag.

2001-12-16  Marc Autret  <autret_m@epita.fr>

        * src/output.c (actions_output): Fix. When we use %no-lines,
        there is one less line per action.

2001-12-16  Marc Autret  <autret_m@epita.fr>

        * src/bison.simple: Remove a useless #line directive.
        s/#line %%line %%skeleton/#line %%line "%%parser-file-name"/'.
        * src/output.c (get_lines_number): New.
        (output_parser): Adjust, now takes care about the lines of a
        output muscles.
        Fix line numbering.
        (actions_output): Computes the number of lines taken by actions.
        (output_master_parser): Insert new skeleton which is the name of
        the output parser file name.

2001-12-15  Marc Autret  <autret_m@epita.fr>

        * src/bison.simple [YYERROR_VERBOSE]: Restore backward compatibility.

2001-12-15  Marc Autret  <autret_m@epita.fr>

        * src/output.c (output_gram): Keep track of the hairy one.

2001-12-15  Akim Demaille  <akim@epita.fr>

        Make `make distcheck' work.

        * lib/Makefile.am (INCLUDES): Add top_srcdir/intl, since hash uses
        system.h which uses libgettext.h.

2001-12-15  Akim Demaille  <akim@epita.fr>

        * src/nullable.c (set_nullable): Useless rules must be skipped,
        otherwise, since we range over their symbols, we might look at a
        nonterminal which no longer ``exists'', i.e., it is not counted in
        `nvars', hence we overflow our arrays.

2001-12-15  Akim Demaille  <akim@epita.fr>

        The header can also be produced directly, without any obstack!
        Yahoo!

        * src/files.c, src/files.h (defines_obstack): Remove.
        (compute_header_macro): Global.
        (defines_obstack_save): Remove.
        * src/reader.c (parse_union_decl): No longer output to
        defines_obstack: its content can be found in the `stype' muscle
        anyway.
        (output_token_translations): Merge into...
        (symbols_output): this.
        Rename as...
        (symbols_save): this.
        (reader): Adjust.
        * src/output.c (header_output): New.
        (output): Call it.

2001-12-15  Akim Demaille  <akim@epita.fr>

        * src/reader.c (parse_union_decl): Instead of handling two obstack
        simultaneously, use one to define the `stype' muscle, and use the
        value of the latter to fill defines_obstack.
        (copy_comment): Remove.
        (copy_comment2): Work for a single obstack.
        Rename as...
        (copy_comment): this.

2001-12-15  Akim Demaille  <akim@epita.fr>

        * src/lex.c, src/lex.h (xgetc): No longer static.
        * src/reader.c (parse_union_decl): Revamp.

2001-12-15  Akim Demaille  <akim@epita.fr>

        Still making progress in separating Bison into (i) input, (ii)
        process, (iii) output: now we can directly output the parser file
        without using table_obstack at all.

        * src/files.c, src/files.h (table_obstack): Bye bye.
        (parser_file_name): New.
        * src/files.c (compute_output_file_names): Compute it.
        * src/output.c (actions_output, output_parser)
        (output_master_parser): To a file instead of an obstack.

2001-12-15  Akim Demaille  <akim@epita.fr>

        Attach actions to rules, instead of pre-outputting them to
        actions_obstack.

        * src/gram.h (rule_t): action and action_line are new members.
        * src/reader.c (symbol_list): Likewise.
        (copy_action): Save the actions within the rule.
        (packgram): Save them in rule_table.
        * src/output.c (actions_output): New.
        (output_parser): Use it on `%%actions'.
        (output_rule_data): Don't free rule_table.
        (output): Do it.
        (prepare): Don't save the `action' muscle.
        * src/bison.simple: s/%%action/%%actions/.

2001-12-15  Akim Demaille  <akim@epita.fr>

        * src/reader.c (copy_action): When --yacc, don't append a `;'
        to the user action: let it fail if lacking.
        Suggested by Arnold Robbins and Tom Tromey.

2001-12-14  Akim Demaille  <akim@epita.fr>

        * src/lex.c (literalchar): Simply return the char you decoded, non
        longer mess around with obstacks and int pointers.
        Adjust all callers.

2001-12-14  Akim Demaille  <akim@epita.fr>

        * src/lex.c (literalchar): Don't escape the special characters,
        just decode them, and keep them as char (before, eol was output as
        the 2 char string `\n' etc.).
        * src/output.c (output_rule_data): Use quotearg to output the
        token strings.

2001-12-13  Paul Eggert  <eggert@twinsun.com>

        * src/bison.simple (YYSIZE_T, YYSTACK_ALLOC, YYSTACK_FREE):
        Do not infringe on the global user namespace when using C++.
        (YYFPRINTF, YYSTDERR): New macros, needed for the above.
        All uses of `fprintf' and `stderr' changed.

        * doc/bison.texinfo: Document YYFPRINTF, YYSTDERR.

2001-12-13  Akim Demaille  <akim@epita.fr>

        The computation of nullable is broken: it doesn't handle empty
        RHS's properly.

        * tests/torture.at (GNU AWK Grammar): New.
        * tests/sets.at (Nullable): New.
        * src/nullable.c (set_nullable): Instead of blindly looping over
        `ritems', loop over the rules, and then over their rhs's.

        Work around Autotest bugs.

        * src/warshall.c (bitmatrix_print): Don't use `+--+' as table
        frame, because Autotest understand lines starting with a `+' as
        traces from the shell.  Then, they are not processed properly.
        Admittedly an Autotest bug, but we don't have time to wait for
        Autotest to catch up.
        * tests/regression.at (Broken Closure): Adjust to the new table
        frames.
        Move to...
        * tests/sets.at: here.

2001-12-13  Akim Demaille  <akim@epita.fr>

        * src/closure.c (closure): Use nrules instead of playing tricks
        with BITS_PER_WORD.

2001-12-13  Akim Demaille  <akim@epita.fr>

        * src/print.c (print_actions): Output the handling of `$' as the
        traces do: shifting the token EOF.  Before EOF was treated as a
        nonterminal.
        * tests/regression.at: Adjust some tests.
        * src/print_graph.c (print_core): Complete the set of items via
        closure.  The next-to-final and final states are still unsatisfying,
        but that's to be addressed elsewhere.
        No longer output the rule numbers, but do output the state number.
        A single loop for the shifts + gotos is enough, but picked a
        distinct color for each.
        (print_graph): Initialize and finalize closure.

2001-12-13  Akim Demaille  <akim@epita.fr>

        * src/reader.c (readgram): Remove dead code, an strip useless
        braces.
        (get_type): Remove, unused.

2001-12-12  Akim Demaille  <akim@epita.fr>

        * src/complain.h, src/complain.c: Remove error_one_per_line, rely
        on that of lib/error.c.

2001-12-12  Akim Demaille  <akim@epita.fr>

        Some hosts don't like `/' in includes.

        * src/system.h: Include libgettext.h without qualifying the path.
        * src/Makefile.am (INCLUDES): Add $(top_srcdir)/intl, remove
        $(top_srcdir).

2001-12-11  Marc Autret  <autret_m@epita.fr>

        * src/output.c (output_parser): Remove useless muscle.

2001-12-11  Marc Autret  <autret_m@epita.fr>

        * src/bison.simple: Remove #line just before %%epilogue. It
        is now handled in ...
        * src/reader.c (read_additionnal_code): Add the output of a
        #line for the epilogue.

2001-12-10  Marc Autret  <autret_m@epita.fr>

        * src/reader.c (copy_definition): Re-use CPP-outed code which
        replace precedent remove.
        * src/bison.simple: Remove #line before %%prologue because
        %%input-line is wrong at this time.

2001-12-10  Marc Autret  <autret_m@epita.fr>

        * src/reader.c (symbols_output): Clean up.
        * src/output.c (output_gram, output): Clean up.

2001-12-10  Akim Demaille  <akim@epita.fr>

        * src/lalr.c (initialize_lookaheads): New.  Extracted from...
        * src/LR0.c (set_state_table): here.
        * src/lalr.c (lalr): Call it.

2001-12-10  Akim Demaille  <akim@epita.fr>

        * src/state.h (shifts): Remove the `number' member: shifts are
        attached to state, hence no longer need to be labelled with a
        state number.

2001-12-10  Akim Demaille  <akim@epita.fr>

        Now that states have a complete set of members, the linked list of
        shifts is useless: just fill directly the state's shifts member.

        * src/state.h (shifts): Remove the `next' member.
        * src/LR0.c (first_state, last_state): Remove.
        Adjust the callers.
        (augment_automaton): Don't look for the shifts that must be added
        a shift on EOF: it is those of the state we looked for!  But now,
        since shifts are attached, it is no longer needed to looking
        merely by its id: its number.

2001-12-10  Akim Demaille  <akim@epita.fr>

        * src/LR0.c (augment_automaton): Better variable locality.
        Remove an impossible branch: if there is a state corresponding to
        the start symbol being shifted, then there is shift for the start
        symbol from the initial state.

2001-12-10  Akim Demaille  <akim@epita.fr>

        * src/LR0.c (augment_automaton): Call `insert_eof_shifting_state'
        only when appropriate: when insert_start_shifting_state' is not
        invoked.
        * tests/regression.at (Rule Line Numbers): Adjust.

2001-12-10  Akim Demaille  <akim@epita.fr>

        * src/LR0.c (augment_automaton): Now that all states have shifts,
        merge the two cases addition shifts to the initial state.

2001-12-10  Akim Demaille  <akim@epita.fr>

        * src/lalr.c (set_state_table): Move to...
        * src/LR0.c: here.
        * src/lalr.c (lalr): Don't call it...
        * src/LR0.c (generate_states): do it.
        * src/LR0.h (first_state): Remove, only the table is used.

2001-12-10  Akim Demaille  <akim@epita.fr>

        * src/LR0.h (first_shift, first_reduction): Remove.
        * src/lalr.c: Don't use first_shift: find shifts through the
        states.

2001-12-10  Akim Demaille  <akim@epita.fr>

        * src/LR0.c: Attach shifts to states as soon as they are
        computed.
        * src/lalr.c (set_state_table): Instead of assigning shifts to
        state, just assert that the mapping was properly done.

2001-12-10  Akim Demaille  <akim@epita.fr>

        * src/LR0.c (insert_start_shift): Rename as...
        (insert_start_shifting_state): this.
        (insert_eof_shifting_state, insert_accepting_state): New.
        (augment_automaton): Adjust.
        Better locality of the variables.
        When looking if the start_symbol is shifted from the initial
        state, using `while (... symbol != start_symbol ...)' sounds
        better than `while (... symbol < start_symbol ...)': If fail
        to see how the order between symbols could be relevant!

2001-12-10  Akim Demaille  <akim@epita.fr>

        * src/getargs.h: Don't declare `spec_name_prefix' and
        `spec_file_prefix', declared by src/files.h.
        * src/files.c, src/files.h: Default for spec_name_prefix is "yy".
        * src/muscle_tab.c (muscle_init): Default prefix to NULL.
        * src/output.c (prepare): Adjust.
        * src/reader.c (symbols_output): Likewise.
        * src/vmsgetargs.c: Vaguely adjust, but who cares?

2001-12-10  Akim Demaille  <akim@epita.fr>

        * src/muscle_tab.c (muscle_init): NULL is a better default than
        `"0"'.

2001-12-10  Akim Demaille  <akim@epita.fr>

        * src/reader.c (reader): Calling symbols_output once is enough.

2001-12-10  Akim Demaille  <akim@epita.fr>

        Now that states have a complete set of members, the linked list of
        reductions is useless: just fill directly the state's reductions
        member.

        * src/state.h (struct reductions): Remove member `number' and
        `next'.
        * src/LR0.c (first_reduction, last_reduction): Remove.
        (save_reductions): Don't link the new reductions, store them in
        this_state.
        * src/lalr.c (set_state_table): No need to attach reductions to
        states, it's already done.
        * src/output.c (output_actions): No longer free the shifts, then
        the reductions, then the states: free all the states and their
        members.

2001-12-10  Akim Demaille  <akim@epita.fr>

        * src/options.c (OPTN, DRTV, BOTH): New.
        (option_table): Use them.

        * src/muscle_tab.c: Don't include xalloc.h and string.h: that's
        the job of system.h.
        * src/options.c: Don't include stdio.h and xalloc.h for the same
        reasons.

2001-12-10  Akim Demaille  <akim@epita.fr>

        * src/output.c (output, prepare): Make sure the values of the
        muscles `action' and `prologue' are 0-terminated.

2001-12-10  Akim Demaille  <akim@epita.fr>

        Clean up GCC warnings.

        * src/reader.c (copy_action): `buf' is not used.
        (parse_skel_decl): Be static.
        * src/muscle_tab.c (mhash1, mhash2, muscle_insert): Preserve `const'.
        * src/options.h (create_long_option_table): Have a real prototype.
        * lib/hash.c, lib/hash.h (hash_insert, hash_insert_at, hash_delete)
        (hash_delete_at): Return const void *.
        Adjust casts to preserve the const.

2001-12-10  Akim Demaille  <akim@epita.fr>

        * configure.in: Require 2.52g.
        M4 is not needed, but AUTOM4TE is.
        * m4/m4.m4: Remove.
        * tests/Makefile.am: Adjust.

2001-12-10  Akim Demaille  <akim@epita.fr>

        One structure for states is enough, even though theoretically
        there are LR(0) states and LALR(1) states.

        * src/lalr.h (state_t): Remove.
        (state_table): Be state_t **, not state_t *.
        * src/state.h (core, CORE_ALLOC): Rename as...
        (state_t, STATE_ALLOC): this.
        Add the LALR(1) members: shifts, reductions, errs.
        * src/LR0.c (state_table): Rename as...
        (state_hash): this, to avoid name clashes with the global
        `state_table'.
        * src/print_graph.c, src/LR0.c, src/LR0.h, src/conflicts.c
        * src/lalr.c, src/lalr.h, src/output.c, src/print.c: Adjust.

2001-12-10  Akim Demaille  <akim@epita.fr>

        Bison dumps core on bash.y.
        Reported by Pascal Bart.

        * src/warshall.c (bitmatrix_print): New.
        (TC): Use it.
        When performing a transitive closure R(i, j) && R(j, k) => R(i, k),
        j must be the outer loop.
        * tests/regression.at (Broken Closure): New.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * tests/atlocal.in (CPPFLAGS): Do not leave a space between -I and
        its argument.
        Reported by Peter Hamorsky.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/conflicts.c (err_table): Remove.
        (resolve_sr_conflict): Adjust.
        * src/lalr.h (state_t.reduction_table, state_t.shift_table):
        Rename as...
        (state_t.reductions, state_t.shifts): this.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/reduce.c (reduce_grammar_tables): No longer disable the
        removal of useless rules via CPP but via `if (0)', so that the
        compiler still check the code is valid.
        For instance, it should have noticed `rline' no longer exists: use
        the `line' member of rule_t.
        * src/gram.c (dummy, rline): Remove, unused.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/output.c (pack_vector): Use assert, not berror.
        * src/main.c (berror): Remove, unused.

2001-12-05  Akim Demaille  <akim@epita.fr>

        New experimental feature: if --verbose --trace output all the
        items of a state, not only its kernel.

        * src/print.c (print_core): If `trace_flag', then invoke closure
        before outputting the items of the state (print_core is no longer
        a correct name them).
        (print_results): Invoke new_closure/free_closure if needed.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/LR0.c (new_itemsets): Use nshifts only, not shiftcount.
        * src/closure.c, src/closure.h (itemsetsize): Rename as...
        (nitemset): for consistency with the rest of the project.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/closure.c (print_closure): Improve.
        (closure): Use it for printing input and output.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/closure.c (FIRSTS, FDERIVES): Adjust to reality: they are
        indexed by nonterminals.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/warshall.c (TC, RTC): De-obsfucate (source reduced to 22% of
        what it was!).
        * src/warshall.h: Remove accidental duplication of the content.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/closure.c (set_fderives): De-obfuscate.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/closure.c (print_firsts, print_fderives): De-obfuscate.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/closure.c (set_firsts): De-obfuscate.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/output.c (action_row): De-obfuscate
        using the good o' techniques: arrays not pointers, variable
        locality, BITISSET, RESETBIT etc.

2001-12-05  Akim Demaille  <akim@epita.fr>

        Pessimize the code to simplify it: from now on, all the states
        have a valid SHIFTS, which NSHIFTS is possibly 0.

        * src/LR0.c (shifts_new): Be global and move to..
        * src/state.c, src/state.h: here.
        * src/conflicts, src/lalr.c, src/output.c, src/print.c,
        * src/print_graph: Adjust.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/state.h (SHIFT_DISABLE, SHIFT_IS_DISABLED): New.
        * src/conflicts.c: Use it.
        Restore a few missing `if (!SHIFT_IS_DISABLED)' which were
        incorrectly ``simplified''.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/conflicts.c (flush_shift, resolve_sr_conflict): De-obfuscate
        using the good o' techniques: arrays not pointers, variable
        locality, BITISSET, RESETBIT etc.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/state.h (SHIFT_SYMBOL): New.
        * src/conflicts.c: Use it to deobfuscate.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/conflicts.c (count_sr_conflicts, count_rr_conflicts)
        (print_reductions): De-obfuscate using the good o' techniques:
        arrays not pointers, variable locality, BITISSET.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/conflicts.c (print_reductions): Arrays, not pointers.
        Use BITISSET.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/conflicts.c (print_reductions): Pessimize, but clarify.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/conflicts.c (print_reductions): Improve variable locality.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/conflicts.c (print_reductions): Pessimize, but clarify.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/conflicts.c (print_reductions): Improve variable locality.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/state.h (SHIFT_IS_ERROR, SHIFT_IS_GOTO, SHIFT_IS_SHIFT): New.
        * src/lalr.c: Use them.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/LR0.c (augment_automaton): Formatting changes.
        Better variable locality.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/lalr.c (matrix_print): New.
        (transpose): Use it.
        Use arrays instead of pointers.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/lalr.c (maxrhs): Move to...
        * src/gram.c, src/gram.h (ritem_longest_rhs): here.
        * src/lalr.c (build_relations): Adjust.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/lalr.c (transpose): Free the memory allocated to the
        argument, as it is replaced by the results by the unique caller.
        (build_relations): Merely invoke transpose: it handles the memory
        deallocation.
        Improve variable locality.
        Avoid variables used as mere abbreviations.
        (compute_lookaheads): Use arrays instead of pointers.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/lalr.c (initialize_F): Improve variable locality.
        Avoid variables used as mere abbreviations.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/derives.c (print_derives): Display the ruleno.
        * src/lalr.c (initialize_F, transpose): Better variable locality
        to improve readability.
        Avoid variables used as mere abbreviations.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/lalr.c (traverse): Use arrays instead of pointers.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/nullable.c (set_nullable): Use a for loop to de-obfuscate
        the handling of squeue.
        `symbol >= 0' is wrong now, use `rule_table[ruleno].useful'.

2001-12-05  Akim Demaille  <akim@epita.fr>

        Because useless nonterminals are now kept alive (instead of being
        `destroyed'), we now sometimes examine them, and store information
        related to them.  Hence we need to know their number, and adjust
        memory allocations.

        * src/reduce.c, src/reduce.h (nuseless_nonterminals): No longer
        static.
        * src/LR0.c (allocate_itemsets): The memory allocated to
        `symbol_count' was used for two different purpose: once to count
        the number of occurrences of each symbol, and later reassigned to
        `shift_symbol', containing the symbol that can be shifted from a
        given state.
        Deobfuscate, i.e., allocate, use and free `symbol_count' here
        only, and...
        (new_itemsets): Allocate `shift_symbol' here.
        (allocate_itemsets): symbol_count includes useless nonterminals.
        Make room for them.
        (free_storage): Use `free', not `XFREE', for pointers that cannot
        be null.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/nullable.c (set_nullable): Deobfuscate the handling of
        ritem.
        `symbol >= 0' is wrong now, use `rule_table[ruleno].useful'.

2001-12-05  Akim Demaille  <akim@epita.fr>

        * src/gram.c, src/gram.h (ritem_print): New.
        * src/gram.c (dummy): Remove, now there is actual code in gram.c.
        (This useless function was defined only to work around VMS linkers
        that can't handle compilation units with variables only).
        * src/reduce.c (dump_grammar): Use it to trace the construction of
        ritem.

2001-12-04  Paul Eggert  <eggert@twinsun.com>

        * src/bison.simple (union yyalloc): Change member names
        to be the same as the stack names.
        (yyparse): yyptr is now union yyalloc *, not char *.
        (YYSTACK_RELOCATE): Likewise.  This avoids a GCC warning,
        and may generate better code on some machines.
        (yystpcpy): Use prototype if __STDC__ is defined, not just
        if __cplusplus is defined.

2001-11-30  Akim Demaille  <akim@epita.fr>

        * configure.in (WARNING_CFLAGS): Add -Werror when possible.
        (CFLAGS): Do not include the WARNING_CFLAGS here, since GNU
        Gettext doesn't compile cleanly, and dies with -Werror.
        * src/Makefile.am, lib/Makefile.am, tests/atlocal.in (CFLAGS):
        Include WARNING_CFLAGS here.
        * lib/xstrdup.c: Include xalloc.h, so that xstrdup be declared
        before being defined.

2001-11-27  Paul Eggert  <eggert@twinsun.com>

        * lib/quotearg.h (quotearg_n, quotearg_n_style):
        First arg is int, not unsigned.
        * lib/quotearg.c (quotearg_n, quotearg_n_style): Likewise.
        (SIZE_MAX, UINT_MAX): New macros.
        (quotearg_n_options): Abort if N is negative.
        Avoid overflow check on hosts where size_t is 64 bits and int
        is 32 bits, as overflow is impossible there.
        Fix off-by-one typo that caused unnecessary reallocation.

2001-11-29  Paul Eggert  <eggert@twinsun.com>

        Name space cleanup in generated parser.

        * doc/bison.texinfo (Bison Parser): Discuss system headers
        and their effect on the user name space.

        * src/bison.simple:
        (YYSTACK_ALLOC, YYSTACK_FREE, union yyalloc, YYSTACK_GAP_MAX,
        YYSTACK_BYTES, YYSTACK_RELOCATE): Do not define unless necessary,
        i.e. unless ! defined (yyoverflow) || defined (YYERROR_VERBOSE).

        (YYSIZE_T): New macro.  Use it instead of size_t, to avoid infringing
        on user names when possible.

        (YYSTACK_USE_ALLOCA): Do not define; just use any existing defn.
        Simplify test for whather <alloca.h> exists.

        (<stdlib.h>): Include if we will use malloc, and if standard C or C++.

        (<stdio.h>): Include if YYDEBUG.

        (yymemcpy): Renamed from __yy_memcpy.  Do not define unless
        ! defined (yyoverflow) && ! defined (yymemcpy).

        (yymemcpy, yyparse): Rename local variables as needed so that
        they all begin with 'yy'.

        (yystrlen, yystpcpy): New functions.

        (YY_DECL_NON_LSP_VARIABLES): Renamed from _YY_DECL_VARIABLES.
        All uses changed.

        (yyparse): size_t -> YYSIZE_T.  Use yystrlen and yystpcpy
        instead of relying on string.h functions.  Use YYSTACK_ALLOC
        and YYSTACK_FREE instead of malloc and free.

2001-11-30  Akim Demaille  <akim@epita.fr>

        * src/bison.simple (YYSTYPE, YYLTYPE): Move their definitions
        before their first uses.
        (YYBISON, YYPURE): Move to the top of the output.

2001-11-30  Akim Demaille  <akim@epita.fr>

        * tests/reduce.at (Useless Nonterminals): Fix.

2001-11-30  Akim Demaille  <akim@epita.fr>

        * src/bison.simple (YYSTACK_FREE): Use `do {;} while (0)' as empty
        if body instead of `;' to pacify GCC's warnings.

2001-11-30  Akim Demaille  <akim@epita.fr>

        Instead of mapping the LHS of unused rules to -1, keep the LHS
        valid, but flag the rules as invalid.

        * src/gram.h (rule_t): `useful' is a new member.
        * src/print.c (print_grammar): Adjust.
        * src/derives.c (set_derives): Likewise.
        * src/reader.c (packgram, reduce_output): Likewise.
        * src/reduce.c (reduce_grammar_tables): Likewise.
        * tests/reduce.at (Underivable Rules, Useless Rules): New.

2001-11-30  Akim Demaille  <akim@epita.fr>

        * src/reduce.c (reduce_output): Formatting changes.
        * src/print.c (print_results, print_grammar): Likewise.
        * tests/regression.at (Rule Line Numbers)
        (Solved SR Conflicts, Unresolved SR Conflicts): Adjust.

2001-11-30  Akim Demaille  <akim@epita.fr>

        * src/reduce.c (nonterminals_reduce): Instead of throwing away
        useless nonterminals, move them at the end of the symbol arrays.
        (reduce_output): Adjust.
        * tests/reduce.at (Useless Nonterminals): Adjust.

2001-11-30  Akim Demaille  <akim@epita.fr>

        * src/reduce.c: Various comment/formatting changes.
        (nonterminals_reduce): New, extracted from...
        (reduce_grammar_tables): here.
        (reduce_grammar): Call nonterminals_reduce.

2001-11-29  Paul Eggert  <eggert@twinsun.com>

        * src/bison.simple (YYSTACK_REALLOC): Remove.
        (YYSTACK_ALLOC): Resurrect this macro, with its old meaning.
        (YYSTACK_FREE, YYSTACK_GAP_MAX, YYSTACK_BYTES, YYSTACK_RELOCATE):
        New macros.
        (union yyalloc): New type.
        (__yy_memcpy): Last arg is size_t, not unsigned int, to remove
        an arbitrary restriction on hosts where size_t is wider than int.

        (yyparse): Don't dump core if alloca or malloc fails; instead, report
        a parser stack overflow.  Allocate just one block of memory for all
        three stacks, instead of allocating three blocks; this typically is
        faster and reduces fragmentation.

        Do not limit the number of items in the stack to a value that fits
        in 'int', as this is an arbitrary limit on hosts with 64-bit
        size_t and 32-bit int.

2001-11-29  Marc Autret  <autret_m@epita.fr>

        * tests/calc.at [AT_DATA_CALC_Y]: Use %error-verbose instead
        of defining YYERROR_VERBOSE.
        [AT_DATA]: $4 is now out of C declarations in the prologue.

2001-11-28  Marc Autret  <autret_m@epita.fr>

        * src/reader.c (parse_dquoted_param): New.
        (parse_skel_decl): Use it.
        * src/lex.h: Add its prototype.
        * src/lex.c (literalchar): Become not static.

2001-11-28  Marc Autret  <autret_m@epita.fr>

        * src/output.h: And put its extern declaration here.
        * src/output.c (error_verbose): Define here.
        (prepare): Echo name modification.
        * src/getargs.h: Clean its extern declaration.
        * src/getargs.c (error_verbose_flag): Remove.
        (getargs): Remove case 'e'.
        * src/options.c (option_table): 'error-verbose' is now seen as simple
        percent option.
        Include output.h.

        * src/reader.c (read_declarations): Remove case tok_include.
        (parse_include_decl): Remove.
        * src/lex.h (token_t): Remove tok_include.
        * src/options.c (option_table): 'include' is now a simple command line
        option.

2001-11-28  Marc Autret  <autret_m@epita.fr>

        * src/bison.simple: Adjust muscle names.
        * src/muscle_tab.c (muscle_init): Also rename the muscles.
        * src/output.c (prepare): s/_/-/ for the muscles names.
        (output_parser): When scanning for a muscle, allow '-' instead of '_'.

2001-11-28  Marc Autret  <autret_m@epita.fr>

        * src/bison.simple: Fix debug.
        [YYERROR_VERBOSE]: Re-integrate as an internal macro.

2001-11-28  Akim Demaille  <akim@epita.fr>

        * src/LR0.c (shifts_new): New.
        (save_shifts, insert_start_shift, augment_automaton): Use it.

2001-11-28  Akim Demaille  <akim@epita.fr>

        * src/closure.c (closure): `b' and `ruleno' denote the same value:
        keep ruleno only.

2001-11-28  Akim Demaille  <akim@epita.fr>

        * src/closure.c (closure): Instead of looping over word in array
        then bits in words, loop over bits in array.

2001-11-28  Akim Demaille  <akim@epita.fr>

        * src/closure.c (closure): No longer optimize the special case
        where all the bits of `ruleset[r]' are set to 0, to make the code
        clearer.

2001-11-28  Akim Demaille  <akim@epita.fr>

        * src/closure.c (closure): `r' and `c' are new variables, used to
        de-obfuscate accesses to RULESET and CORE.

2001-11-28  Akim Demaille  <akim@epita.fr>

        * src/reduce.c (reduce_print): Use ngettext.
        (dump_grammar): Improve the trace accuracy.

2001-11-28  Akim Demaille  <akim@epita.fr>

        * src/reduce.c (dump_grammar): Don't translate trace messages.

2001-11-28  Akim Demaille  <akim@epita.fr>

        * tests/reduce.at (Useless Terminals, Useless Nonterminals): New.
        * src/reduce.c (reduce_grammar_tables): Do not free useless tags,
        as all tags are free'ed afterwards.
        From Enrico Scholz.

2001-11-27  Paul Eggert  <eggert@twinsun.com>

        * src/bison.simple (YYSTACK_REALLOC): Fix typo that caused us to
        use alloca when we didn't want to, and vice versa.

2001-11-27  Marc Autret  <autret_m@epita.fr>

        * src/muscle_tab.c (muscle_init): Remove 'verbose' muscle
        initialization.
        * src/output.c (prepare): Remove its update.

2001-11-27  Marc Autret  <autret_m@epita.fr>

        * tests/torture.at [AT_DATA]: Remove YYERROR_VERBOSE definition.
        Use %error-verbose.

2001-11-27  Marc Autret  <autret_m@epita.fr>

        * src/bison.simple: Remove YYERROR_VERBOSE using.
        Use %%error_verbose.
        (yyparse): Likewise.
        * src/output.c (prepare): Give its final value.
        * src/muscle_tab.c (muscle_init): Init new muscle 'error_verbose'.
        * src/getargs.h: Add its extern declaration.
        * src/getargs.c (error_verbose_flag): New int.
        (getargs): Update to catch new case.
        * src/options.c (option_table): 'error-verbose' is a new option.
        (shortopts): Update.

2001-11-27  Akim Demaille  <akim@epita.fr>

        * src/system.h: Use intl/libgettext.h.
        * src/Makefile.am (INCLUDES): Add -I $(top_srcdir).

2001-11-27  Akim Demaille  <akim@epita.fr>

        * tests/torture.at (Exploding the Stack Size with Malloc):
        s/YYSTACK_USE_ALLOCA_ALLOCA/YYSTACK_USE_ALLOCA/.

2001-11-27  Akim Demaille  <akim@epita.fr>

        * src/files.c: Include error.h.
        Reported by Hans Aberg.

2001-11-26  Marc Autret  <autret_m@epita.fr>

        * src/reader.c (parse_include_decl): New, not yet implemented.
        (read_declarations): Add case tok_include.
        * src/getargs.h (include): Add its extern definition.
        * src/getargs.c (include): New const char *.
        (getargs): Add case '-I'.
        * src/options.c (option_table): Add include as command line and
        percent option.
        * src/lex.h (token_t): Add tok_include.

2001-11-26  Akim Demaille  <akim@epita.fr>

        * src/reader.c (readgram): Make sure rules for mid-rule actions
        have a lineno equal to that of their host rule.
        Reported by Hans Aberg.
        * tests/regression.at (Rule Line Numbers): New.

2001-11-26  Akim Demaille  <akim@epita.fr>

        * src/LR0.c (allocate_itemsets): kernel_size contains ints, not
        size_ts.

2001-11-26  Akim Demaille  <akim@epita.fr>

        * src/complain.c, src/complain.h (error): Remove, provided by
        lib/error.[ch].

2001-11-26  Akim Demaille  <akim@epita.fr>

        * src/reader.c (read_declarations): Don't abort on tok_illegal,
        issue an error message.
        * tests/regression.at (Invalid %directive): New.
        Reported by Hans Aberg.

2001-11-26  Akim Demaille  <akim@epita.fr>

        * configure.in: Invoke AC_FUNC_OBSTACK and AC_FUNC_ERROR_AT_LINE.
        * lib/Makefile.am (libbison_a_SOURCES): Adjust.

2001-11-26  Akim Demaille  <akim@epita.fr>

        * src/conflicts.c (conflicts_print): Don't complain at all when
        there are no reduce/reduce conflicts, and as many shift/reduce
        conflicts as expected.
        * tests/regression.at (%expect right): Adjust.

2001-11-23  Akim Demaille  <akim@epita.fr>

        * lib/alloca.c: Update, from fileutils.

2001-11-23  Akim Demaille  <akim@epita.fr>

        * lib/Makefile.am (libbison_a_LIBADD): Add @ALLOCA@.

2001-11-23  Akim Demaille  <akim@epita.fr>

        * src/system.h: Include alloca.h.
        * src/main.c (main) [C_ALLOCA]: Call alloca (0).

2001-11-23  Akim Demaille  <akim@epita.fr>

        * src/print_graph.c (print_actions): Remove `rule', unused.
        * src/LR0.c (kernel_size): Contain `int' instead of `size_t' to
        pacify GCC's signed < unsigned warnings.
        * src/closure.c (itemsetsize): Likewise.
        * src/reader.c (symbol_list_new): Static.

2001-11-23  Akim Demaille  <akim@epita.fr>

        Attaching lineno to buckets is stupid, since only one copy of each
        symbol is kept, only the line of the first occurrence is kept too.

        * src/symtab.h, src/symtab.c (bucket): Remove the line member.
        * src/reader.c (rline_allocated): Remove, unused.
        (symbol_list): Have a `line' member.
        (symbol_list_new): New.
        (readgram): Use it.
        * src/print.c (print_grammar): Output the rule line numbers.
        * tests/regression.at (Solved SR Conflicts)
        (Unresolved SR Conflicts): Adjust.
        Reported by Hans Aberg.

2001-11-22  Marc Autret  <autret_m@epita.fr>

        * src/bison.simple [YYERROR_VERBOSE]: Force its value to be 1 or 0.

2001-11-22  Marc Autret  <autret_m@epita.fr>

        * src/muscle_tab.c (muscle_init): Remove initialization of
        skeleton muscle.
        * src/output.c (output_master_parser): Do it here.

2001-11-20  Akim Demaille  <akim@epita.fr>

        * po/sv.po: New.
        * configure.in (ALL_LINGUAS): Adjust.
        * po/POTFILE.in: Remove `nullable.c' and `derives.c' which no
        longer contains strings to translate.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/conflicts.c (conflicts_print): Add a missing \n.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/nullable.c (nullable_print): New.
        (set_nullable): Call it when tracing.
        Better locality of variables.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/print.c (print_actions): Better locality of variables.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/derives.c (print_derives): Fix and enrich.
        * src/closure.c (print_fderives): Likewise.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/closure.c (itemsetend): Remove, replaced with...
        (itemsetsize): new.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/LR0.c (kernel_end): Remove, replaced with...
        (kernel_size): new.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/conflicts.c (set_conflicts): Use arrays instead of pointers
        to clarify.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/closure.c (closure): Use arrays instead of pointers to clarify.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/closure.c, src/derives.c, src/nullable.c: Adjust various
        trace messages.
        * src/LR0.c: Likewise.
        (allocate_itemsets): Use arrays instead of pointers to clarify.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/getargs.c (statistics_flag): Replace with...
        (trace_flag): New.
        (longopts): Accept --trace instead of --statistics.
        * src/getargs.h, src/options.c: Adjust.
        * src/LR0.c, src/closure.c, src/derives.c, src/nullable.c,
        * src/reduce.c: Use trace_flags instead of the CPP conditional TRACE.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/LR0.c (new_itemsets, get_state): Use more arrays and fewer
        pointers to clarify the code.
        (save_reductions, save_shifts): Factor common parts of alternatives.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/LR0.c (new_state, get_state): Complete TRACE code.
        * src/closure.c: Include `reader.h' to get `tags', needed by the
        trace code.
        Rename the conditional DEBUG as TRACE.
        Output consistently TRACEs to stderr, not stdout.
        * src/derives.c: Likewise.
        * src/reduce.c: (inaccessable_symbols): Using if is better style
        than goto.
        Use `#if TRACE' instead of `#if 0' for tracing code.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/system.h (LIST_FREE, shortcpy): New.
        * src/LR0.c: Use them.
        * src/output.c (free_itemsets, free_reductions, free_shifts):
        Remove, replaced by LIST_FREE.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/state.h (CORE_ALLOC, SHIFTS_ALLOC, ERRS_ALLOC)
        (REDUCTIONS_ALLOC):  New.
        * src/LR0.c, src/conflicts.c: Use them to de-obfuscate memory
        allocation.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/LR0.c (new_state): Complete trace code.
        * src/nullable.c (set_nullable): Don't translate traces.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/print_graph.c (print_core): Better locality of variables.
        * src/print.c (print_core): Likewise.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/vcg.c: You do the output, so you are responsible of the
        handling of VCG syntax, in particular: use quotearg.
        * src/print_graph.c: Don't.
        (print_actions): Don't output the actions as part of the nodes,
        since that's the job of the edges.
        (print_state): Don't output by hand: fill the node description,
        and ask for its output.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/bison.simple (yyparse): When verbosely reporting an error,
        no longer put additional quotes around token names.
        * tests/calc.at: Adjust.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/symtab.h, src/symtab.c: `line' is a new member of `bucket'.
        * src/reader.c (record_rule_lines, rline, rline_allocated): Remove.
        * src/output.c: Adjust.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/gram.h (rprec, rprecsym, rassoc): Remove, now part of...
        (rule_t): this.
        * src/conflicts.c, src/reader.c, src/reduce.c: Adjust.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/gram.h (rule_t): New.
        (rule_table): New.
        (rrhs, rlhs): Remove, part of state_t.
        * src/print_graph.c, src/closure.c, src/conflicts.c, src/derives.c,
        * src/lalr.c, src/nullable.c, src/output.c, src/print.c,
        * src/reader.c, src/reduce.c: Adjust.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/reader.c (symbols_output): New, extracted from...
        (packsymbols): Here.
        (reader): Call it.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/lalr.c (set_maxrhs, maxrhs): Remove, replaced with...
        (maxrhs): this new function.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/lalr.c (F): New macro to access the variable F.
        Adjust.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/lalr.h (LA): New macro to access the variable LA.
        * src/output.c, src/lalr.c, src/print_graph.c, src/conflicts.c:
        * src/lalr.c: Adjust.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/lalr.c (initialize_LA): Only initialize LA.  Let...
        (set_state_table): handle the `lookaheads' members.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/lalr.h (lookaheads): Removed array, whose contents is now
        a member of...
        (state_t): this structure.
        * src/output.c, src/lalr.c, src/print_graph.c, src/conflicts.c:
        Adjust.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/lalr.h (consistent): Removed array, whose contents is now
        a member of...
        (state_t): this structure.
        * src/output.c, src/lalr.c, src/print_graph.c, src/conflicts.c:
        Adjust.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/lalr.h (reduction_table, shift_table): Removed arrays, whose
        contents are now members of...
        (state_t): this structure.
        * src/output.c, src/lalr.c, src/print_graph.c, src/conflicts.c:
        Adjust.

2001-11-19  Akim Demaille  <akim@epita.fr>

        * src/lalr.h (state_t): New.
        (state_table): Be a state_t * instead of a core **.
        (accessing_symbol): Remove, part of state_t.
        * src/lalr.c: Adjust.
        (set_accessing_symbol): Merge into...
        (set_state_table): this.
        * src/print_graph.c, src/conflicts.c: Adjust.

2001-11-14  Akim Demaille  <akim@epita.fr>

        * tests/calc.at, tests/output.at, tests/regression.at,
        * tests/testsuite.at, tests/torture.at: Rely on Autotest 2.52g:
        now the tests are run in private dirs, therefore AC_CLEANUP and
        family can be simplified to 0-ary.
        * tests/atlocal.in: Now that we run `elsewhere' than in tests/,
        use abs. path to find config.h.
        * tests/calc.at (AT_CHECK_CALC): Don't try to check the compiler's
        stderr, there can be way too much random noise.
        Instead pass -Werror to GCC and rely on the exit status.
        Reported by Wolfram Wagner.

2001-11-14  Akim Demaille  <akim@epita.fr>

        * src/bison.simple (yyparse): Let yyls1, yyss1 and yyvs1 be
        defined only if yyoverflow is defined, to avoid `warning: unused
        variable `yyvs1''.
        Reported by The Test Suite.

2001-11-14  Akim Demaille  <akim@epita.fr>

        * src/print.c: Include reduce.h.
        Reported by Hans Aberg.

2001-11-14  Akim Demaille  <akim@epita.fr>

        * src/lex.c, src/lex.h (token_buffer, unlexed_token_buffer):
        Revert a previous patch:  these are really const.
        * src/conflicts.c (conflict_report): Additional useless pair of
        braces to pacify GCC's warnings for `if () if () {} else {}'.
        * src/lex.c (parse_percent_token): Replace equal_offset with
        arg_offset.
        arg is const.
        Be sure to strdup `arg' when used, since there is no reason for
        token_buffer not to change.

2001-11-14  Akim Demaille  <akim@epita.fr>

        * src/system.h (EXIT_SUCCESS, EXIT_FAILURE): Ensure a proper
        definition.
        * src/main.c (main): Use them.
        Suggested by Hans Aberg.

2001-11-12  Akim Demaille  <akim@epita.fr>

        * src/system.h (ngettext): Now that we use ngettext, be sure to
        provide a default definition when NLS are not used.

2001-11-12  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo: Use `$' as shell prompt, not `%'.
        Use @kbd to denote user input.
        (Language and Grammar): ANSIfy the example.
        Adjust its layout for info/notinfo.
        (Location Tracking Calc): Output error messages to stderr.
        Output locations in a more GNUtically correct way.
        Fix a couple of Englishos.
        Adjust @group/@end group pairs.

2001-11-12  Akim Demaille  <akim@epita.fr>

        %expect was not functioning at all.

        * src/conflicts.c (expected_conflicts): Set to -1.
        (conflict_report): Use ngettext.
        (conflicts_print): Check %expect and make its violation an error.
        * doc/bison.texinfo (Expect Decl): Adjust.
        * configure.in (AM_GNU_GETTEXT): Ask for ngettext.
        * tests/regression.at (%expect not enough, %expect right)
        (%expect too much): New.

2001-11-12  Akim Demaille  <akim@epita.fr>

        * tests/regression.at (Conflicts): Rename as...
        (Unresolved SR Conflicts): this.
        (Solved SR Conflicts): New.

2001-11-12  Akim Demaille  <akim@epita.fr>

        * src/reduce.c (print_results): Rename as...
        (reduce_output): This.
        Output to OUT, passed as argument, instead of output_obstack.
        (dump_grammar): Likewise.
        (reduce_free): New.
        Also free V1.
        (reduce_grammar): No longer call reduce_output, since...
        * src/print.c (print_results): do it.
        * src/main.c (main): Call reduce_free;

2001-11-12  Akim Demaille  <akim@epita.fr>

        * src/conflicts.c (print_reductions): Accept OUT as argument.
        Output to it, not to output_obstack.
        * src/print.c (print_actions): Adjust.

2001-11-12  Akim Demaille  <akim@epita.fr>

        * src/conflicts.c (count_sr_conflicts, count_rr_conflicts): Return
        the result instead of using...
        (src_total, rrc_total, src_count, rrc_count): Remove.
        (any_conflicts): Remove.
        (print_conflicts): Split into...
        (conflicts_print, conflicts_output): New.
        * src/conflicts.h: Adjust.
        * src/main.c (main): Invoke both conflicts_output and conflicts_print.
        * src/print.c (print_grammar): Issue `\n' between two rules.
        * tests/regression.at (Conflicts): New.
        Reported by Tom Lane.

2001-11-12  Akim Demaille  <akim@epita.fr>

        * tests/regression.at (Invalid input): Remove, duplicate with
        ``Invalid input: 1''.

2001-11-12  Akim Demaille  <akim@epita.fr>

        * tests/torture.at (AT_DATA_STACK_TORTURE)
        (Exploding the Stack Size with Alloca)
        (Exploding the Stack Size with Malloc): New.

2001-11-12  Akim Demaille  <akim@epita.fr>

        * src/bison.simple (YYSTACK_REALLOC): New.
        (yyparse) [!yyoverflow]: Use it and free the old stack.
        Reported by Per Allansson.

2001-11-12  Pascal Bart  <pascal.bart@epita.fr>

        * src/bison.simple: Define type yystype instead of YYSTYPE, and
        define CPP macro, which substitute YYSTYPE by yystype.
        * src/reader.c (parse_union_decl): Output yystype/YYSTYPE as we do
        with yyltype/YYLTYPE.  This allows inclusion of the generated
        header within the parser if the compiler, such as GGC, accepts
        multiple equivalent #defines.
        From Akim.

2001-11-05  Akim Demaille  <akim@epita.fr>

        * src/reader.c (symbols_output): New, extracted from...
        (packsymbols): here.
        (reader): Adjust.

2001-11-05  Akim Demaille  <akim@epita.fr>

        * src/lex.c (parse_percent_token): s/quotearg/quote/.

2001-11-05  Akim Demaille  <akim@epita.fr>

        * tests/regression.at (AT_TEST_CPP_GUARD_H): Adjust the clean up
        pattern.

2001-11-05  Akim Demaille  <akim@epita.fr>

        * src/options.h (struct option_table_struct): set_flags is void*.
        * src/options.c (longopts): Support `--output' and `%output'.
        (usage): Adjust.
        * src/lex.h (tok_setopt): Remove, replaced with...
        (tok_intopt, tok_stropt): these new guys.
        * src/lex.c (getopt.h): Not needed.
        (token_buffer, unlexed_token_buffer): Not const.
        (percent_table): Promote `-' over `_' in directive names.
        Active `%name-prefix', `file-prefix', and `output'.
        (parse_percent_token): Accept possible arguments to directives.
        Promote `-' over `_' in directive names.

2001-11-04  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo (Decl Summary): Split the list into
        `directives for grammars' and `directives for bison'.
        Sort'em.
        Add description of `%name-prefix', `file-prefix', and `output'.
        Promote `-' over `_' in directive names.
        (Bison Options): s/%locactions/%locations/.  Nice Freudian slip.
        Simplify the description of `--name-prefix'.
        Promote `-' over `_' in directive names.
        Promote `--output' over `--output-file'.
        Fix the description of `--defines'.
        * tests/output.at: Exercise %file-prefix and %output.

2001-11-02  Akim Demaille  <akim@epita.fr>

        * doc/refcard.tex: Update.

2001-11-02  Akim Demaille  <akim@epita.fr>

        * src/symtab.h (SUNDEF): New.
        * src/symtab.c (bucket_new): Init user_token_number to SUNDEF to
        stand for `uninitialized', instead of 0.
        * src/reader.c (packsymbols, parse_thong_decl): Adjust.
        * src/lex.c (lex): Adjust.

        * tests/calc.at (_AT_DATA_CALC_Y): Declare a token for EOF.
        Number it 0.
        Let yylex return it instead of a plain 0.
        Reported by Dick Streefland.

2001-11-02  Akim Demaille  <akim@epita.fr>

        * tests/regression.at (Mixing %token styles): New test.

2001-11-02  Akim Demaille  <akim@epita.fr>

        * src/reader.c (parse_thong_decl): Formatting changes.
        (token_translations_init): New, extracted from...
        (packsymbols): Here.
        Adjust.

2001-11-01  Akim Demaille  <akim@epita.fr>

        * tests/regression.at (AT_TEST_CPP_GUARD_H): New.
        Check that `9foo.y' produces correct cpp guards.
        * src/files.c (compute_header_macro): Prepend `BISON_' to CPP
        guards.
        Reported by Wwp.

2001-11-01  Akim Demaille  <akim@epita.fr>

        * tests/regression.at (Invalid input: 2): New.
        * src/lex.c (unlexed_token_buffer): New.
        (lex, unlex): Adjust: when unlexing, be sure to save token_buffer
        too.
        Reported by Wwp.

2001-11-01  Akim Demaille  <akim@epita.fr>

        * tests/calc.at: Catch up with 1.30.
        * configure.in: Bump to 1.49a.
        Adjust to newer Autotest.

2001-10-19  Pascal Bart  <pascal.bart@epita.fr>

        * src/conflicts.c: Move global variables rrc_total and src_total ...
        (print_conflicts): here.
        * src/output.c (output): Free global variable user_toknums.
        * src/lex.c (token_obstack): Become static.

2001-10-18  Akim Demaille  <akim@epita.fr>

        * tests/atlocal.in (GCC): Add.
        * tests/calc.at: s/m4_match/m4_bmatch/.
        s/m4_patsubst/m4_bpatsubst/.
        (AT_CHECK_CALC): Check the compiler's stderr only if it's GCC.
        * configure.in: AC_SUBST(GCC).

2001-10-14  Marc Autret  <autret_m@epita.fr>

        * src/options.c (create_long_option_table): Fix.

2001-10-10  Akim Demaille  <akim@epita.fr>

        * src/bison.simple: Be sure to set YYSTACK_USE_ALLOCA.

2001-10-04  Akim Demaille  <akim@epita.fr>

        * src/reader.c (parse_union_decl): Push the caracters in
        union_obstack, not attrs_obstack.

2001-10-04  Akim Demaille  <akim@epita.fr>

        Merge in the branch 1.29.

        * src/reader.c (packsymbols): Use a temporary obstack for
        `%%tokendef', since output_stack is already used elsewhere.

        2001-10-02  Akim Demaille  <akim@epita.fr>

        Bump 1.29d.

        2001-10-02  Akim Demaille  <akim@epita.fr>

        Version 1.29c.

        2001-10-02  Akim Demaille  <akim@epita.fr>

        * tests/regression.at (Invalid CPP headers): New.
        From Alexander Belopolsky.
        * src/files.c (compute_header_macro): Map non alnum chars to `_'.

        2001-10-02  Akim Demaille  <akim@epita.fr>

        * tests/regression.at (Invalid input): New.
        * src/lex.c (lex): Be sure to set `token_buffer' in any case.
        Reported by Shura.

        2001-10-02  Akim Demaille  <akim@epita.fr>

        * tests/calc.at: Now that --debug works, the tests must be adjusted.

        2001-10-02  Akim Demaille  <akim@epita.fr>

        * src/output.c (output_parser): Assert `skeleton'.
        * src/files.c (skeleton_find): Look harder for skeletons on DOSish
        systems.
        From Shura.

        2001-10-01  Marc Autret  <autret_m@epita.fr>

        * src/lex.h: Echo modifications.
        * src/lex.c (unlex): Parameter is now token_t.
        From Hans Aberg.

        2001-10-01  Marc Autret  <autret_m@epita.fr>

        * src/main.c: Include lex.h.
        From Hans Aberg.

        2001-09-29  Akim Demaille  <akim@epita.fr>

        * src/getargs.c (longopts): `--debug' is `-t', not `-d'.

        2001-09-28  Akim Demaille  <akim@epita.fr>

        * tests/testsuite.at: Update to newer Autotest.
        * tests/Makefile.am (EXTRA_DIST): bison is not to be shipped.

        2001-09-27  Akim Demaille  <akim@epita.fr>

        Position independent wrapper.

        * tests/bison: Remove.
        * tests/bison.in: New.
        * configure.in: Adjust.

        2001-09-27  Paul Eggert  <eggert@twinsun.com>

        Port quotearg fixes from tar 1.13.24.

        * lib/quotearg.c: BSD/OS 4.1 wchar.h requires FILE and struct
        tm to be declared.
        (HAVE_MBSINIT): Undef if !HAVE_MBRTOWC.
        (mbsinit): Define to 1 if !defined mbsinit && !HAVE_MBSINIT.

        * m4/Makefile.am (EXTRA_DIST): Add mbrtowc.m4.
        * m4/mbrtowc.m4: New file.
        * m4/prereq.m4 (jm_PREREQ_QUOTEARG): Check for mbsinit and stddef.h.
        Use jm_FUNC_MBRTOWC instead of AC_CHECK_FUNCS(mbrtowc).

        2001-09-27  Akim Demaille  <akim@epita.fr>

        Bump to 1.29c.

        2001-09-27  Akim Demaille  <akim@epita.fr>

        Version 1.29b.

        2001-09-25  Akim Demaille  <akim@epita.fr>

        * src/system.h: Include `xalloc.h'.
        Remove it from the C files.
        * src/files.c (output_files): Free the obstacks.
        * src/lex.c (init_lex): Rename as...
        (lex_init): this.
        (lex_free): New.
        * src/main.c (main): Use it.

        2001-09-24  Marc Autret  <autret_m@epita.fr>

        * src/vcg.c (open_edge, close_edge, open_node, close_node): Change
        to output informations in fout (FILE*).
        (open_graph, close_graph): Likewise.
        (output_graph, output_edge, output_node): Likewise.
        * src/vcg.h: Update function prototypes.
        * src/print_graph.c (print_graph): Open output graph file.
        (print_actions): Adjust.
        * src/files.h: Remove extern declaration.
        * src/files.c: Remove graph_obstack declaration.
        (open_files): Remove graph_obstack initialization.
        (output_files): Remove graph_obstack saving.

        2001-09-24  Marc Autret  <autret_m@epita.fr>

        * src/files.c (compute_output_file_names): Fix.

        2001-09-24  Marc Autret  <autret_m@epita.fr>,
                    Akim Demaille  <akim@epita.fr>

        * src/reader.c (reader): Remove call to free_symtab ().
        * src/main.c (main): Call it here.
        Include symtab.h.
        * src/conflicts.c (initialize_conflicts): Rename as...
        (solve_conflicts): this.
        * src/print.c (print_core, print_actions, print_state)
        (print_grammar): Dump to a file instead a `output_obstack'.
        (print_results): Dump `output_obstack', and then proceed with the
        FILE *.
        * src/files.c (compute_output_file_names, close_files): New.
        (output_files): Adjust.
        * src/main.c (main): Adjust.

        2001-09-23  Marc Autret  <autret_m@epita.fr>

        * src/files.c (compute_header_macro): Computes header macro name
        from spec_defines_file when given.

        2001-09-23  Marc Autret  <autret_m@epita.fr>

        * src/files.c (output_files): Add default extensions.

        2001-09-22  Akim Demaille  <akim@epita.fr>

        * src/conflicts.c (finalize_conflicts): Rename as...
        (free_conflicts): this.

        2001-09-22  Akim Demaille  <akim@epita.fr>

        * src/gram.c (gram_free): Rename back as...
        (dummy): this.
        (output_token_translations): Free `token_translations'.
        * src/symtab.c (free_symtab): Free the tag field.

        2001-09-22  Akim Demaille  <akim@epita.fr>

        Remove `translations' as it is always set to true.

        * src/gram.h: Adjust.
        * src/reader.c (packsymbols, parse_token_decl): Adjust
        * src/print.c (print_grammar): Adjust.
        * src/output.c (output_token_translations): Adjust.
        * src/lex.c (lex): Adjust.
        * src/gram.c: Be sure the set pointers to NULL.
        (dummy): Rename as...
        (gram_free): this.

        2001-09-22  Akim Demaille  <akim@epita.fr>

        * configure.in: Invoke AM_LIB_DMALLOC.
        * src/system.h: Use dmalloc.
        * src/LR0.c: Be sure to have pointers initialized to NULL.
        (allocate_itemsets): Allocate kernel_items only if needed.

        2001-09-22  Akim Demaille  <akim@epita.fr>

        * configure.in: Bump to 1.29b.
        * tests/Makefile.am (DISTCLEANFILES): Add package.m4.
        * tests/calc.at (_AT_DATA_CALC_Y): #undef malloc so that we don't
        need xmalloc.c in calc.y.
        From Pascal Bart.

        2001-09-21  Akim Demaille  <akim@epita.fr>

        Version 1.29a.
        * Makefile.maint, config/config.guess, config/config.sub,
        * config/missing: Update from masters.
        * tests/Makefile.am ($(srcdir)/$(TESTSUITE)): No longer depend
        upon package.m4.
        * configure.in (ALL_LINGUAS): Add `tr'.

        2001-09-21  Akim Demaille  <akim@epita.fr>

        * tests/Makefile.am (package.m4): Move to...
        ($(srcdir)/$(TESTSUITE)): here.

        2001-09-20  Akim Demaille  <akim@epita.fr>

        * src/complain.c: No longer try to be standalone: use system.h.
        Don't assume __STDC__ is defined to 1. Just test if it is defined.
        * src/complain.h: Likewise.
        * src/reduce.c (useless_nonterminals, inaccessable_symbols):
        Remove the unused variable `n'.
        From Albert Chin-A-Young.

        2001-09-18  Marc Autret  <autret_m@epita.fr>

        * doc/bison.1: Update.
        * doc/bison.texinfo (Bison Options): Update --defines and --graph
        descriptions.
        (Option Cross Key): Update.
        Add --graph.

        2001-09-18  Marc Autret  <autret_m@epita.fr>

        * tests/regression.at: New test (comment in %union).

        2001-09-18  Marc Autret  <autret_m@epita.fr>

        * src/reader.c (parse_union_decl): Do not output '/'. Let copy_comment
        do that.
        Reported by Keith Browne.

        2001-09-18  Marc Autret  <autret_m@epita.fr>

        * tests/output.at: Add tests for --defines and --graph.

        2001-09-18  Marc Autret  <autret_m@epita.fr>

        * tests/output.at: Removes tests of %{header,src}_extension features.

        2001-09-18  Akim Demaille  <akim@epita.fr>

        * tests/Makefile.am (package.m4): New.
        * tests/calc.at (_AT_CHECK_CALC): Just run `calc input'.
        (_AT_CHECK_CALC_ERROR): Likewise.
        Factor the `, ' part of verbose error messages.

        2001-09-18  Marc Autret  <autret_m@epita.fr>

        * src/getargs.c (longopts): Declare --defines and --graph as options
        with optional arguments.
        * src/files.h: Add extern declarations.
        * src/files.c (spec_graph_file, spec_defines_file): New.
        (output_files): Update.
        Remove CPP-outed code.

        2001-09-18  Marc Autret  <autret_m@epita.fr>

        Turn off %{source,header}_extension feature.

        * src/files.c (compute_exts_from_gf): Update.
        (compute_exts_from_src): Update.
        (output_files): CPP-out useless code.
        * src/files.h: Remove {header,source}_extension extern declarations.
        * src/reader.c (parse_dquoted_param): CPP-out.
        (parse_header_extension_decl): Remove.
        (parse_source_extension_decl): Remove.
        (read_declarations): Remove cases tok_{hdrext,srcext}.
        * src/lex.c (percent_table): Remove {header,source}_extension entries.
        * src/lex.h (token_t): Remove tok_hdrext and tok_srcext.

        2001-09-10  Akim Demaille  <akim@epita.fr>

        * tests/output.at (AT_CHECK_BISON_FLAGS, AT_CHECK_BISON_PERCENT):
        (AT_CHECK_BISON_PERCENT_FLAGS): Merge into...
        (AT_CHECK_OUTPUT): this.
        Merely check ls' exit status, its output is useless.

        2001-09-10  Akim Demaille  <akim@epita.fr>

        * tests/calc.at: Use m4_match.
        (_AT_DATA_CALC_Y): Check `yyin != NULL', not `stdin != NULL'.

        2001-09-10  Marc Autret  <autret_m@epita.fr>,
                    Akim Demaille  <akim@epita.fr>

        * src/vcg.h (graph_s): color, textcolor, bordercolor are now
        enum color_e.
        * src/print_graph.c (print_graph): Initalize graph.layoutalgorithm
        to `normal'.
        * src/reader.c (parse_token_decl): Initialize token with tok_eof.
        * src/lex.h: Adjust prototype.
        (token_t): Add `tok_undef'.
        * src/lex.c (struct percent_table_struct): Retval is now a token_t.
        (parse_percent_token): Now returns token_t.
        Add default statement in switch.
        (lex): Separate `c' as an input variable, from the token_t result
        part.
        (unlexed): Is a token_t.

        2001-09-10  Akim Demaille  <akim@epita.fr>

        * configure.in: Bump to 1.29a.

        2001-09-07  Akim Demaille  <akim@epita.fr>

        Version 1.29.

        2001-08-30  Akim Demaille  <akim@epita.fr>

        * tests/atgeneral.m4, tests/atconfig.in, tests/suite.at: Remove.
        * m4/atconfig.m4: Remove.
        * tests/testsuite.at, tests/atlocal.in, tests/output.at,
        * tests/bison: New.
        * tests/regression.at, tests/calc.at: Use m4_define, AT_BANNER,
        m4_if, m4_patsubst, and m4_regexp.
        * tests/calc.at (_AT_CHECK_CALC, _AT_CHECK_CALC_ERROR): Use an
        `input' file instead of echo.

        2001-08-29  Akim Demaille  <akim@epita.fr>

        Bump to 1.28e.

        2001-08-29  Akim Demaille  <akim@epita.fr>

        Version 1.28d.

        2001-08-29  Paul Eggert  <eggert@twinsun.com>

        * src/bison.simple (yyparse): Don't take the address of an
        item before the start of an array, as that doesn't conform to
        the C Standard.

        2001-08-29  Robert Anisko  <anisko_r@epita.fr>

        * doc/bison.texinfo (Location Tracking Calc): New node.

        2001-08-29  Paul Eggert  <eggert@twinsun.com>

        * src/output.c (output): Do not define const, as this now
        causes more problems than it cures.

        2001-08-29  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo: Modernize `@node' and `@top' use: just name
        the nodes.
        Be sure to tag the `detailmenu'.

        2001-08-29  Akim Demaille  <akim@epita.fr>

        * Makefile.maint (do-po-update): Wget refuses to overwrite files:
        download in a tmp dir.

        2001-08-28  Marc Autret  <autret_m@epita.fr>

        * config/depcomp: New file.

        2001-08-28  Marc Autret  <autret_m@epita.fr>

        * doc/bison.1 (mandoc): Adjust.
        From Juan Manuel Guerrero.

        2001-08-28  Marc Autret  <autret_m@epita.fr>

        * src/print_graph.c (print_state): Fix.

        2001-08-27  Marc Autret  <autret_m@epita.fr>

        * src/vcg.h (classname_s, infoname_s, node_s): Constify the
        char * members.
        Echo modifications to the functions prototypes.
        * src/vcg.c (add_classname, add_infoname): Adjust arguments.

        2001-08-27  Marc Autret  <autret_m@epita.fr>

        * src/vcg.c: Include `xalloc.h'.
        (add_colorentry): New.
        (add_classname): New.
        (add_infoname): New.
        * src/vcg.h: Add new prototypes.

        2001-08-27  Akim Demaille  <akim@epita.fr>

        * Makefile.maint: Sync. again with CVS Autoconf.

        2001-08-27  Akim Demaille  <akim@epita.fr>

        * Makefile.maint: Formatting changes.
        (po-update, cvs-update, update): New targets.
        (AMTAR): Remove.

        2001-08-27  Akim Demaille  <akim@epita.fr>

        * Makefile.am (AUTOMAKE_OPTIONS): 1.5.
        * Makefile.maint: Sync. with CVS Autoconf.

        2001-08-27  Marc Autret  <autret_m@epita.fr>

        * src/vcg.h (struct infoname_s): New.
        (struct colorentry_s): New.
        (graph_s): New fields {vertical,horizontal}_order in structure.
        Add `infoname' field.
        Add `colorentry' field;
        * src/vcg_defaults.h (G_VERTICAL_ORDER): New.
        (G_HORIZONTAL_ORDER): New.
        (G_INFONAME): New.
        (G_COLORENTRY): New.
        * src/vcg.c (output_graph): Add output of {vertical,horizontal}_order.
        Add output of `infoname'.
        Add output of `colorentry'.

        2001-08-27  Marc Autret  <autret_m@epita.fr>

        * src/reader.c (parse_dquoted_param): Rename variable `index' to `i'.
        This one shadowed a global parameter.

        2001-08-24  Marc Autret  <autret_m@epita.fr>

        * src/print_graph.c (node_output_size): Declared POSIX `size_t' type,
        instead of `unsigned'.
        (print_state): Do not call obstack_object_size () in obstack_grow ()
        to avoid macro variables shadowing.

        2001-08-23  Marc Autret  <autret_m@epita.fr>

        * src/lex.c (percent_table): Typo: s/naem/name/.
        Add graph option.
        Normalize new options declarations.

        2001-08-20  Pascal Bart  <pascal.bart@epita.fr>

        * tests/suite.at: Exercise %header_extension and %source_extension.

        2001-08-16  Marc Autret  <autret_m@epita.fr>

        * src/reader.c (parse_dquoted_param): New.
        (parse_header_extension_decl): Use it.
        (parse_source_extension_decl): Likewise.

        2001-08-16  Marc Autret  <autret_m@epita.fr>

        * src/vcg.c: Remove includes of `complain.h' and `xalloc.h'.
        (get_xxxx_str): Use assert () instead of complain ().
        Remove return invokations in default cases.
        (get_decision_str): Modify default behaviour. Remove second argument.
        Echo modifications on calls.
        (output_graph): Fix.

        2001-08-16  Marc Autret  <autret_m@epita.fr>

        * src/getargs.c (usage): Update with ``-g, --graph''.

        2001-08-16  Marc Autret  <autret_m@epita.fr>

        * doc/bison.texinfo (Bison Options): Add items `-g', `--graph'.
        (Option Cross Key): Likewise.
        * doc/bison.1: Update.

2001-09-25  Pascal Bart  <pascal.bart@epita.fr>

        * src/output.c (output_master_parser): Don't finish action_obstack.
        (output_parser): Don't care about the muscle action, here.
        (prepare): Copy the action_obstack in the action muscle.
        (output): Free action_obstack.

2001-09-23  Pascal Bart  <pascal.bart@epita.fr>

        * src/reader.c (parse_union_decl): Add new obstack union_obstack.  Which
        will contain `%union' declaration.
        (parse_union_decl): Delete #line directive output.
        (parse_union_decl): Substitute /attrs_obstack/union_obstack for all
        informations about %union.
        (parse_union_decl): Copy the union_obstack in the muscle stype.
        * src/bison.simple: Add new #line directive.
        Add typdef %%stype YYSTYPE.

2001-09-23  Pascal Bart  <pascal.bart@epita.fr>

        * src/bison.simple: Add new `#line' directive.

2001-09-22  Pascal Bart  <pascal.bart@epita.fr>

        * src/bison.simple: New `#line' directive.
        * src/output.c (output_parser): Support new dynamic muscle input_line.

2001-09-22  Marc Autret  <autret_m@epita.fr>

        * src/output.c (output_master_parser): New.
        (output_parser): Be more re-entrant.

2001-09-21  Marc Autret  <autret_m@epita.fr>

        * src/reader.c (copy_definition, parse_union_decl): Update and use
        `linef' muscle.
        (copy_action): Likewise.
        Use obstack_1grow ().
        * src/muscle_tab.c (muscle_init): Add muscle `linef'.

2001-09-21  Marc Autret  <autret_m@epita.fr>

        * src/options.c (option_table): Adjust.
        * src/lex.c (parse_percent_token): Fix.

2001-09-20  Pascal Bart  <pascal.bart@epita.fr>

        * src/options.c (symtab.h): Include it, need by lex.h.

2001-09-20  Pascal Bart  <pascal.bart@epita.fr>

        * src/lex.c (parse_percent_token): Change type of variable `tx', which
        is now an option_table_struct*.
        (option_strcmp): New function option_strcmp.
        (parse_percent_token): Call option_strcmp.
        * src/getargs.c (xalloc.h, options.h): Include it.
        (getargs): Call create_long_option_table.
        (getargs): Free longopts at the end of the function.
        (shortopts): Move in options.c.
        * src/options.c (create_long_option_table): New function.  Convert
        information from option_table to option structure.
        * src/reader.c (options.h): Include it.

        * src/Makefile.am: Adjust.
        * src/options.c (option_table): Create from longopts and percent_table.
        * src/getargs.c (longopts): Delete.
        * src/lex.c (struct percent_table_struct): Delete.
        (percent_table): Delete.
        (options.h): Include it.
        * src/options.c: Create.
        * src/options.h: Create.
        Declare enum opt_access_e.
        Define struct option_table_struct.

2001-09-20  Marc Autret  <autret_m@epita.fr>

        * doc/bison.texinfo: Adjust terminologies about prologue and epilogue
        sections of Bison.

2001-09-19  Pascal Bart  <pascal.bart@epita.fr>

        * src/bison.simple: s/%%filename/%%skeleton.
        * src/muscle_tab.c (getargs.h): Include it.
        (muscle_init): Insert new muscle skeleton.

2001-09-18  Pascal Bart  <pascal.bart@epita.fr>

        * src/output.c (output_parser): Delete unused variable actions_dumped.

2001-09-07  Pascal Bart  <pascal.bart@epita.fr>

        * src/output.c (output): Delete call to reader_output_yylsp.
        * src/reader.c (reader): Likewise.
        * src/reader.h: Delete declaration of reader_output_yylsp.

2001-09-02  Marc Autret  <autret_m@epita.fr>

        * src/reader.c: Include muscle_tab.h.
        (parse_union_decl): Update.
        (parse_macro_decl): Rename parse_muscle_decl.
        Update to use renamed functions and variable.
        (read_declarations, copy_action, read_additionnal_code, : Updated
        with correct variables and functions names.
        (packsymbols, reader): Likewise.

        * src/reader.h (muscle_obstack): Extern declaration update.

        * src/output.c: Include muscle_tab.h
        In all functions using macro_insert, change by using muscle_insert ().
        (macro_obstack): Rename muscle_obstack.
        Echo modifications in the whole file.
        (MACRO_INSERT_INT): Rename MUSCLE_INSERT_INT.
        (MACRO_INSERT_STRING): Rename MUSCLE_INSERT_STRING.
        (MACRO_INSERT_PREFIX): Rename MUSCLE_INSERT_PREFIX.

        * src/muscle_tab.h: Update double inclusion macros.
        (macro_entry_s): Rename muscle_entry_s.
        Update prototypes.

        * src/muscle_tab.c: Include muscle_tab.h.
        Rename macro_tabble to muscle_table.
        (mhash1, mhash2, mcmp): Use muscle_entry.
        (macro_init): Rename muscle_init. Update.
        (macro_insert): Rename muscle_insert. Update.
        (macro_find): Rename muscle_find. Update.

        * src/main.c: Include muscle_tab.h.
        (main): Call muscle_init ().
        * src/Makefile.am (bison_SOURCES): Echo modifications.

2001-09-02  Marc Autret  <autret_m@epita.fr>

        Now the files macro_tab.[ch] are named muscle_tab.[ch].

        * src/muscle_tab.c, src/muscle_tab.h: Add files.

2001-09-02  Marc Autret  <autret_m@epita.fr>

        * src/macrotab.c, src/macrotab.h: Remove.

2001-09-01  Pascal Bart  <pascal.bart@epita.fr>

        * src/reader.c (copy_guard): Use muscle to specify the `#line'
        filename.

2001-09-01  Marc Autret  <autret_m@epita.fr>

        * tests/calc.at (exp): Now, YYERROR_VERBOSE need to be set
        to an explicit value to activate the feature. We do it here.

2001-08-31  Pascal Bart  <pascal.bart@epita.fr>

        * src/output.c (prepare): Delete the `filename' muscule insertion.
        * src/reader.c (copy_action): Use `filename' muscule with `#line'.
        (parse_union_decl): Likewise.
        * src/macrotab.c (macro_init): Initialize filename by infile.

2001-08-31  Marc Autret  <autret_m@epita.fr>

        * src/bison.simple (YYLSP_NEEDED): New definition.
        * src/output.c (prepare): Add macro insertion of `locations_flag'

2001-08-31  Pascal Bart  <pascal.bart@epita.fr>

        * src/output.c (prepare): Delete insertion of previous muscles,
        and insert the `prefix' muscles.
        * src/macrotab.c (macro_init): Likewise.
        (macro_init): Initialization prefix directive by `yy'.
        * src/bison.simple: Substitute all %%yylex, %%yychar, %%yylval,
        %%yydebug, %%yyerror, %%yynerrs and %%yyparse by yylex, yychar,
        yylval, yydebug, yyerror, yynerrs and yyparse.
        New directive `#define' to substitute yydebug, ... with option
        name_prefix.

2001-08-31  Pascal Bart  <pascal.bart@epita.fr>

        * src/main.c (main): Standardize.
        * src/output.c (output_table_data, output_parser): Likewise.
        * src/macrotab.h, src/macrotab.c, src/bison.simple: Likewise.

2001-08-31  Pascal Bart  <pascal.bart@epita.fr>, Marc Autret  <autret_m@epita.fr>

        * src/reader.c (read_additionnal_code): Rename %%user_code to
        %%epilogue.
        * src/output.c (output): Rename %%declarations to %%prologue.
        * src/bison.simple: Echo modifications.

2001-08-31  Marc Autret  <autret_m@epita.fr>

        * src/reader.c (readgram): CleanUp.
        (output_token_defines): Likewise.
        (packsymbols): Likewise.
        (reader): Likewise.
        * src/output.c (output): CPP-out useless code.

2001-08-31  Pascal Bart  <pascal.bart@epita.fr>

        * src/reader.c (reader): Delete obsolete call to function
        output_trailers and output_headers.
        * src/output.h: Remove obsolete functions prototypes of output_headers
        and output_trailers.

2001-08-30  Pascal Bart  <pascal.bart@epita.fr>

        * src/main.c: Include macrotab.h.
        * src/macrotab.h (macro_entry_s): Constify fields.
        Adjust functions prototypes.
        * src/macrotab.c (macro_insert): Constify key and value.
        (macro_find): Constify key.
        (macro_insert): Include 'xalloc.h'
        (macro_insert): Use XMALLOC.
        (macro_find): Constify return value.
        * src/output.c (output_table_data): Rename table to table_data.
        (output_parser): Constify macro_key, macro_value.

2001-08-30  Marc Autret  <autret_m@epita.fr>

        * src/reader.c (parse_skel_decl): New.
        (read_declarations): Add case `tok_skel', call parse_skel_decl ().
        * src/lex.h (token_t): New token `tok_skel'.
        * src/lex.c (percent_table): Add skeleton option entry.
        Standardize.

2001-08-29  Marc Autret  <autret_m@epita.fr>

        * src/bison.simple: Add %%user_code directive at the end.
        * src/reader.c (read_additionnal_code): New.
        (reader): Use it.
        * src/output.c (output_program): Remove.
        (output): Update.

2001-08-28  Marc Autret  <autret_m@epita.fr>

        * src/output.c (output_actions): Clean up.
        (output_gram): CPP-out useless code.
        * src/reader.c (reader): Clean up, CPP-out useless code.

2001-08-28  Pascal Bart  <pascal.bart@epita.fr>

        * src/output.c (output): Copy attrs_obstack in the '%%definitions'
        directive.
        * src/bison.simple: Add `%%definitions'.

2001-08-28  Marc Autret  <autret_m@epita.fr>

        * config/depcomp: New file.

2001-08-27  Paul Eggert  <eggert@twinsun.com>

        * src/bison.simple (yyparse): Don't take the address of an
        item before the start of an array, as that doesn't conform to
        the C Standard.

2001-08-27  Robert Anisko  <robert.anisko@epita.fr>

        * src/output.c (output): Remove the initialization of the macro
        obstack.  It was done too late here.

        * src/reader.c (parse_macro_decl): Fix.  Use of the macro obstack was
        completely wrong.
        (reader): Initialize the macro obstack here, since we need it to grow
        '%define' directives.

        * src/reader.h: Declare the macro obstack as extern.

2001-08-27  Robert Anisko  <robert.anisko@epita.fr>

        * src/output.c (output_parser): Fix.  Store single '%' characters in
        the output obstack instead of throwing them away.

2001-08-27  Akim Demaille  <akim@epita.fr>

        * Makefile.am (AUTOMAKE_OPTIONS): 1.5.

2001-08-25  Robert Anisko  <robert.anisko@epita.fr>

        * lib/Makefile.am: Adjust.

2001-08-25  Robert Anisko  <robert.anisko@epita.fr>

        * src/bison.simple: Update and add '%%' directives.

2001-08-25  Robert Anisko  <robert.anisko@epita.fr>

        * src/reader.c (reader): Remove calls to 'output_headers' and
        'output_trailers'. Remove some C output.
        (readgram): Disable a piece of code that was writing a default
        definition for 'YYSTYPE'.
        (reader_output_yylsp): Remove.
        (packsymbols): Output token defintions to a macro.
        (copy_definition): Disable C output.

        * src/reader.c (parse_macro_decl): New function used to parse macro
        declarations.
        (copy_string2): Put the body of copy_string into this new function.
        Add a parameter to let the caller choose whether he wants to copy the
        string delimiters or not.
        (copy_string): Be a simple call to copy_string2 with the last argument
        bound to true.
        (read_declarations): Add case for macro definition.
        (copy_identifier): New.
        (parse_macro_decl): Read macro identifiers using copy_identifier
        rather than lex.

2001-08-25  Robert Anisko  <robert.anisko@epita.fr>

        * src/output.c (prepare): Add prefixed names.
        (output_parser): Output semantic actions.
        (output_parser): Fix bug on '%%line' directives.

        * src/output.c (output_headers): Remove. The C code printed by this
        function should now be in the skeletons.
        (output_trailers): Remove.
        (output): Disable call to 'reader_output_yylsp'.
        (output_rule_data): Do not output tables to the table obstack.

        * src/output.c: Remove some C dedicated output.
        Improve the use of macro and output obstacks.
        (output_defines): Remove.

        * src/output.c (output_token_translations): Associate 'translate'
        table with a macro. No output to the table obstack.
        (output_gram): Same for 'rhs' and 'prhs'.
        (output_stos): Same for 'stos'.
        (output_rule_data): Same for 'r1' and 'r2'.
        (token_actions): Same for 'defact'.
        (goto_actions): Same for 'defgoto'.
        (output_base): Same for 'pact' and 'pgoto'.
        (output_table): Same for 'table'.
        (output_check): Same for 'check'.

        * src/output.c (output_table_data): New function.
        (output_short_table): Remove.
        (output_short_or_char_table): Remove.

        * src/output.c (output_parser): Replace most of the skeleton copy code
        with something new. Skeletons are now processed character by character
        rather than line by line, and Bison looks for '%%' macros. This is the
        first step in making Bison's output process (a lot) more flexible.
        (output_parser): Use the macro table.

2001-08-25  Robert Anisko  <robert.anisko@epita.fr>

        * src/main.c (main): Initialize the macro table.

2001-08-25  Robert Anisko  <robert.anisko@epita.fr>

        * src/lex.c (percent_table): Add tok_define.
        * src/lex.h: Add tok_define.

2001-08-25  Robert Anisko  <robert.anisko@epita.fr>

        * src/macrotab.c: New file.
        * src/macrotab.h: New file.
        * src/Makefile.am: Update.

2001-08-25  Robert Anisko  <robert.anisko@epita.fr>

        * lib/hash.c: New file.
        * lib/hash.h: New file.
        * lib/Makefile.am: Update.

2001-08-15  Akim Demaille  <akim@epita.fr>

        Version 1.28c.

2001-08-15  Marc Autret  <autret_m@epita.fr>

        * src/reader.c (readgram): Indent output macro YYSTYPE.
        (packsymbols): Likewise.
        (output_token_defines): Likewise.
        * src/files.c: Standardize.
        (compute_header_macro): New.
        (defines_obstack_save): New. Use compute_header_macro.
        (output_files): Update. Use defines_obstack_save.

2001-08-15  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo (Table of Symbols): Document
        YYSTACK_USE_ALLOCA.

2001-08-15  Akim Demaille  <akim@epita.fr>

        * missing: Update from CVS Automake.
        * config/config.guess, config/config.sub, config/texinfo.tex:
        Update from gnu.org.

2001-08-15  Akim Demaille  <akim@epita.fr>

        * Makefile.maint: Sync with CVS Autoconf.

2001-08-14  Pascal Bart  <pascal.bart@epita.fr>

        * doc/bison.texinfo: Include GNU Free Documentation License from
        `fdl.texi'.
        * doc/fdl.texi: Add to package.

2001-08-14  Marc Autret  <autret_m@epita.fr>

        Turn on %{source,header}_extension features.

        * src/lex.c (percent_table): Un-CPP out header_extension and
        source_extension.
        * src/files.c (compute_exts_from_gf): Compare pointers with NULL.
        (compute_exts_from_src): Remove conditions. It restores priorities
        between options.

2001-08-14  Marc Autret  <autret_m@epita.fr>

        * src/files.c (compute_base_names): Add extensions computing when
        `--file-prefix' used.
        Standardize function calls.

2001-08-13  Marc Autret  <autret_m@epita.fr>

        * src/bison.simple (YYSTACK_USE_ALLOCA): Changed to allow users
        defining it (defined but null disables alloca).

2001-08-13  Marc Autret  <autret_m@epita.fr>

        * src/bison.simple (_yy_memcpy): CPP reformat.

2001-08-13  Pascal Bart  <pascal.bart@epita.fr>

        * tests/atconfig.in (CPPFLAGS): Fix.

2001-08-10  Pascal Bart  <pascal.bart@epita.fr>

        * doc/bison.texinfo: Include GNU General Public License from
        `gpl.texi'.
        * doc/gpl.texi: Add to package.

2001-08-10  Marc Autret  <autret_m@epita.fr>

        * src/print_graph.h: Fix.
        * src/reader.c (read_declarations): Use parse_header_extension_decl ().

2001-08-10  Akim Demaille  <akim@epita.fr>

        * src/system.h: Provide default declarations for stpcpy, strndup,
        and strnlen.

2001-08-10  Robert Anisko  <anisko_r@epita.fr>

        * doc/bison.texinfo (Locations): Update @$ stuff.

2001-08-09  Robert Anisko  <anisko_r@epita.fr>

        * src/bison.simple (YYLLOC_DEFAULT): Update.
        (yyparse): Adjust.

2001-08-08  Marc Autret  <autret_m@epita.fr>

        * doc/bison.texinfo: Change @samp{$<@dots{}>} to
        @samp{$<@dots{}>@var{n}} in Section Actions in Mid-Rule.
        Reported by Fabrice Bauzac.

2001-08-08  Marc Autret  <autret_m@epita.fr>

        * src/vcg_default.h: Use NULL instead of 0 to initialize pointers.
        * src/vcg.c (output_node): Fix.
        * src/vcg.h: Cleanup.
        * src/print_graph.c: Add comments.
        (node_output_size): New global variable. Simplify the formatting of
        the VCG graph output.
        (print_actions): Unused code is now used. It notifies the final state
        and no action states in the VCG graph. It also give the reduce actions.
        The `shift and goto' edges are red and the `go to state' edges are
        blue.
        Get the current node name and node_obstack by argument.
        (node_obstack): New variable.
        (print_state): Manage node_obstack.
        (print_core): Use node_obstack given by argument.
        A node is not only computed here but in print_actions also.
        (print_graph): CPP out useless code instead of commenting it.

2001-08-07  Pascal Bart  <pascal.bart@epita.fr>

        * tests/atconfig.in (CPPFLAGS): Fix.

2001-08-07  Akim Demaille  <akim@epita.fr>

        * src/print_graph.c (quote): New.
        (print_core): Use it.

2001-08-06  Akim Demaille  <akim@epita.fr>, Marc Autret  <autret_m@epita.fr>

        * src/vcg.c (complain.h): Include it.
        Unepitaize `return' invocations.
        [NDEBUG] (main): Remove.
        * src/vcg.h (node_t, edge_t, graph_t): Constify the char * members.
        * src/files.c (open_files): Initialize graph_obstack.
        * src/print_graph.c (print_actions): CPP out useless code.
        (print_core): Don't output the last `\n' in labels.
        Use `quote'.
        * src/files.c (output_files): Output the VCG file.
        * src/main.c (main): Invoke print_graph ();

2001-08-06  Marc Autret  <autret_m@epita.fr>

        Automaton VCG graph output.
        Using option ``-g'' or long option ``--graph'', you can generate
        a gram_filename.vcg file containing a VCG description of the LALR (1)
        automaton of your grammar.

        * src/main.c: Call to print_graph() function.
        * src/getargs.h: Update.
        * src/getargs.c (options): Update to catch `-g' and `--graph' options.
        (graph_flag): New flag.
        (longopts): Update.
        (getargs): Add case `g'.
        * src/files.c (graph_obstack): New obstack struct.
        (open_files): Initialize new obstack.
        (output_files): Saves graph_obstack if required.
        * src/files.h (graph_obstack): New extern declaration.
        * src/Makefile.am: Add new source files.

2001-08-06  Marc Autret  <autret_m@epita.fr>

        * src/print_graph.c, src/print_graph.h (graph): New.
        * src/vcg.h: New file.
        * src/vcg.c: New file, VCG graph handling.

2001-08-06  Marc Autret  <autret_m@epita.fr>

        Add of %source_extension and %header_extension which specify
        the source or/and the header output file extension.

        * src/files.c (compute_base_names): Remove initialisation of
        src_extension and header_extension.
        (compute_exts_from_gf): Update.
        (compute_exts_from_src): Update.
        (output_files): Update.
        * src/reader.c (parse_header_extension_decl): New.
        (parse_source_extension_decl): New.
        (read_declarations): New case statements for the new tokens.
        * src/lex.c (percent_table): Add entries for %source_extension
        and %header_extension.
        * src/lex.h (token_e): New tokens tok_hdrext and tok_srcext.

2001-08-06  Marc Autret  <autret_m@epita.fr>

        * configure.in: Bump to 1.28c.
        * doc/bison.texinfo: Texinfo thingies.

2001-08-04  Pascal Bart  <pascal.bart@epita.fr>

        * tests/atconfig.in (CPPFLAGS): Add.
        * tests/calc.at (AT_CHECK): Use CPPFLAGS.

2001-08-03  Akim Demaille  <akim@epita.fr>

        Version 1.28b.

2001-08-03  Akim Demaille  <akim@epita.fr>

        * tests/Makefile.am (check-local): Ship testsuite.
        * tests/calc.at (_AT_DATA_CALC_Y): Prototype all the functions.
        Include `string.h'.

2001-08-03  Akim Demaille  <akim@epita.fr>

        * configure.in: Try using -Wformat when compiling.

2001-08-03  Akim Demaille  <akim@epita.fr>

        * configure.in: Bump to 1.28b.

2001-08-03  Akim Demaille  <akim@epita.fr>

        * src/complain.c: Adjust strerror_r portability issues.

2001-08-03  Akim Demaille  <akim@epita.fr>

        Version 1.28a.

2001-08-03  Akim Demaille  <akim@epita.fr>

        * src/getargs.c, src/getarg.h (skeleton)): Constify.
        * src/lex.c (literalchar): Avoid name clashes on `buf'.
        * src/getargs.c: Include complain.h.
        * src/files.c, src/files.h (skeleton_find): Avoid name clashes.
        * lib/quotearg.c, lib/quotearg.h: Update from fileutils 4.1.

2001-08-03  Akim Demaille  <akim@epita.fr>

        * src/reader.c (readgram): Display hidden chars in error messages.

2001-08-03  Akim Demaille  <akim@epita.fr>

        Update to gettext 0.10.39.

2001-08-03  Akim Demaille  <akim@epita.fr>

        * lib/strspn.c: New.

2001-08-01  Marc Autret  <autret_m@epita.fr>

        * doc/bison.texinfo: Update.
        * doc/bison.1 (mandoc): Update.
        * src/system.h (EXT_GUARD_C, EXT_STYPE_H): Remove .c and .h.
        * src/files.c: Support output files extensions computing.
        (src_extension): New static variable.
        (header_extension): New static variable.
        (tr): New function.
        (get_extension_index): New function, gets the index of an extension
        filename in a string.
        (compute_exts_from_gf): New function, computes extensions from the
        grammar file extension.
        (compute_exts_from_src): New functions, computes extensions from the
        C source file extension, file given by ``-o'' option.
        (compute_base_names): Update.
        (output_files): Update.

2001-08-01  Robert Anisko  <anisko_r@epita.fr>

        * doc/bison.texi: Document @$.
        (Locations): New section.

2001-07-18  Akim Demaille  <akim@epita.fr>

        * Makefile.maint, GNUmakefile: New, from Autoconf 2.52.
        * config/prev-version.txt, config/move-if-change: New.
        * Makefile.am: Adjust.

2001-07-08  Pascal Bart  <pascal.bart@epita.fr>

        * src/bison.simple (yyparse): Suppress warning `comparaison
        between signed and unsigned'.

2001-07-05  Pascal Bart  <pascal.bart@epita.fr>

        * src/getargs.h (raw_flag): Remove.
        * src/getargs.c: Die on `-r'/`--raw'.
        * src/lex.c (parse_percent_token): Die on `%raw'.
        * src/reader.c (output_token_defines): Suppress call to `raw_flag'.
        * tests/calc.at: Suppress test with option `--raw'.

2001-07-14  Akim Demaille  <akim@epita.fr>

        * config/: New.
        * configure.in: Require Autoconf 2.50.
        Update to gettext 0.10.38.

2001-03-16  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo: ANSIfy the examples.

2001-03-16  Akim Demaille  <akim@epita.fr>

        * getargs.c (skeleton): New variable.
        (longopts): --skeleton is a new option.
        (shortopts, getargs): -S is a new option.
        * getargs.h: Declare skeleton.
        * output.c (output_parser): Use it.

2001-03-16  Akim Demaille  <akim@epita.fr>

        * m4/strerror_r.m4: New.
        * m4/error.m4: Run AC_FUNC_STRERROR_R.
        * lib/error.h, lib/error.c: Update.

2001-03-16  Akim Demaille  <akim@epita.fr>

        * src/getargs.c (longopts): Clean up.

2001-02-21  Akim Demaille  <akim@epita.fr>

        * src/reader.c (gensym): `gensym_count' is your own.
        Use a static buf to create the symbol name, as token_buffer is no
        longer a buffer.

2001-02-08  Akim Demaille  <akim@epita.fr>

        * src/conflicts.c (conflict_report): Be sure not to append to res
        between two calls, which could happen if both first sprintf were
        skipped, but not the first cp += strlen.

2001-02-08  Akim Demaille  <akim@epita.fr>

        * lib/memchr.c, lib/stpcpy.c, lib/strndup.c, lib/strnlen.c:
        New, from fileutils 4.0.37.
        * configure.in: Require Autoconf 2.49c.  I took some time before
        making this decision.  This is the only way out for portability
        issues in Bison, it would mean way too much duplicate effort to
        import in Bison features implemented in 2.49c since 2.13.
        AC_REPLACE_FUNCS and AC_CHECK_DECLS the functions above.

2001-02-02  Akim Demaille  <akim@epita.fr>

        * lib/malloc.c, lib/realloc.c: New, from the fileutils 4.0.37.
        * lib/xalloc.h, lib/xmalloc.c: Update.

2001-01-19  Akim Demaille  <akim@epita.fr>

        Get rid of the ad hoc handling of token_buffer in the scanner: use
        the obstacks.

        * src/lex.c (token_obstack): New.
        (init_lex): Initialize it.  No longer call...
        (grow_token_buffer): this.  Remove it.
        Adjust all the places which used it to use the obstack.

2001-01-19  Akim Demaille  <akim@epita.fr>

        * src/lex.h: Rename all the tokens:
        s/\bENDFILE\b/tok_eof/g;
        s/\bIDENTIFIER\b/tok_identifier/g;
        etc.
        Let them be enums, not #define, to ease debugging.
        Adjust all the code.

2001-01-18  Akim Demaille  <akim@epita.fr>

        * src/lex.h (MAXTOKEN, maxtoken, grow_token_buffer): Remove, private.
        * src/lex.c (maxtoken, grow_token_buffer): Static.

2001-01-18  Akim Demaille  <akim@epita.fr>

        Since we now use obstacks, more % directives can be enabled.

        * src/lex.c (percent_table): Also accept `%yacc',
        `%fixed_output_files', `%defines', `%no_parser', `%verbose', and
        `%debug'.
        Handle the actions for `%semantic_parser' and `%pure_parser' here,
        instead of returning a token.
        * src/lex.h (SEMANTIC_PARSER, PURE_PARSER): Remove, unused.
        * src/reader.c (read_declarations): Adjust.
        * src/files.c (open_files): Don't call `compute_base_names', don't
        compute `attrsfile' since they depend upon data which might be
        *in* the input file now.
        (output_files): Do it here.
        * src/output.c (output_headers): Document the fact that this patch
        introduces a guaranteed SEGV for semantic parsers.
        * doc/bison.texinfo: Document them.
        * tests/suite.at: Exercise these %options.

2000-12-20  Akim Demaille  <akim@epita.fr>

        Also handle the output file (--verbose) with obstacks.

        * files.c (foutput): Remove.
        (output_obstack): New.
        Adjust all dependencies.
        * src/conflicts.c: Return a string.
        * src/system.h (obstack_grow_string): Rename as...
        (obstack_sgrow): this.  Be ready to work with non literals.
        (obstack_fgrow4): New.

2000-12-20  Akim Demaille  <akim@epita.fr>

        * src/files.c (open_files): Fix the computation of short_base_name
        in the case of `-o foo.tab.c'.

2000-12-20  Akim Demaille  <akim@epita.fr>

        * src/reader.c (copy_string, copy_comment, copy_comment2, copy_at)
        (copy_dollar): Now that everything uses obstacks, get rid of the
        FILE * parameters.

2000-12-20  Akim Demaille  <akim@epita.fr>

        * src/files.c (open_files): Actually the `.output' file is based
        on the short_base_name, not base_name.
        * tests/suite.at (Checking output file names): Adjust.

2000-12-20  Akim Demaille  <akim@epita.fr>

        * src/bison.s1: Remove, we now use directly...
        * src/bison.simple: this.
        * src/Makefile.am: Use pkgdata instead of data.

2000-12-20  Akim Demaille  <akim@epita.fr>

        * src/files.c (guard_obstack): New.
        (open_files): Initialize it.
        (output_files): Dump it...
        * src/files.h: Export it.
        * src/reader.c (copy_guard): Use it.

2000-12-19  Akim Demaille  <akim@epita.fr>

        * src/files.c (outfile, defsfile, actfile): Removed as global
        vars.
        (open_files): Don't compute them.
        (output_files): Adjust.
        (base_name, short_base_name): Be global.
        Adjust dependencies.

2000-12-19  Akim Demaille  <akim@epita.fr>

        * src/files.c (strsuffix): New.
        (stringappend): Be just like strcat but allocate.
        (base_names): Eve out from open_files.
        Try to simplify the rather hairy computation of base_name and
        short_base_name.
        (open_files): Use it.
        * tests/suite.at (Checking output file names): New test.

2000-12-19  Akim Demaille  <akim@epita.fr>

        * src/system.h (obstack_grow_literal_string): Rename as...
        (obstack_grow_string): this.
        * src/output.c (output_parser): Recognize `%% actions' instead of
        `$'.
        * src/bison.s1: s/$/%% actions/.
        * src/bison.hairy: Likewise.

2000-12-19  Akim Demaille  <akim@epita.fr>

        * src/output.c (output_parser): Compute the `#line' lines when
        there are.
        * src/Makefile.am (bison.simple): Be a simple copy of bison.s1.
        Suggested by Hans Aberg.

2000-12-19  Akim Demaille  <akim@epita.fr>

        Let the handling of the skeleton files be local to the procedures
        that use it.

        * src/files.c (xfopen, xfclose, skeleton_find, guardfile): No
        longer static.
        (fparser, open_extra_files): Remove.
        (open_files, output_files): Don't take care of fparser.
        * src/files.h: Adjust.
        * src/output.c (output_parser): Open and close the file to the
        skeleton.
        * src/reader.c (read_declarations): When %semantic_parser, open
        fguard.

2000-12-19  Akim Demaille  <akim@epita.fr>

        * src/file.h (BISON_SIMPLE, BISON_HAIRY): Move from here...
        * src/system.h (BISON_SIMPLE, BISON_HAIRY): ... to here.

2000-12-19  Akim Demaille  <akim@epita.fr>

        * src/files.c (open_files): Yipee!  We no longer need all the code
        looking for `/tmp' since we have no tmp file.

2000-12-19  Akim Demaille  <akim@epita.fr>

        * src/system.h (EXT_TAB, EXT_OUTPUT, EXT_STYPE_H, EXT_GUARD_C):
        New macros.
        * src/files.c (open_files): Less dependency on MSDOS etc.

2000-12-14  Akim Demaille  <akim@epita.fr>

        * src/bison.s1 (YYLLOC_DEFAULT): New macro.
        Provide a default definition.
        Use it when executing the default @ action.
        * src/reader.c (reader_output_yylsp): No longer include
        `timestamp' and `text' in the default YYLTYPE.

2000-12-12  Akim Demaille  <akim@epita.fr>

        * src/reader.c (copy_definition, parse_union_decl, copy_action)
        (copy_guard): Quote the file names.
        Reported by Laurent Mascherpa.

2000-12-12  Akim Demaille  <akim@epita.fr>

        * src/output.c (output_headers, output_program, output): Be sure
        to escape special characters when outputting filenames.
        (ACTSTR_PROLOGUE, ACTSTR_EPILOGUE): Remove.
        (output_headers): Don't depend on them, Use ACTSTR.

2000-11-17  Akim Demaille  <akim@epita.fr>

        * lib/obstack.h: Formatting changes.
        (obstack_grow, obstack_grow0): Don't cast WHERE at all: it
        prevents type checking.
        (obstack_ptr_grow, obstack_ptr_grow_fast): When assigning, don't
        cast the value to (void *): assigning a `foo *' to a `void *'
        variable is valid.
        (obstack_int_grow, obstack_int_grow_fast): Don't cast AINT to int.
        * src/reader.c (parse_union_decl): Typo: use obstack_1grow to
        append characters.

2000-11-17  Akim Demaille  <akim@epita.fr>

        * tests/Makefile.am (suite.m4, regression.m4, calc.m4): Rename
        as...
        (suite.m4, regression.m4, calc.m4): these.
        * tests/atgeneral.m4: Update from CVS Autoconf.

2000-11-17  Akim Demaille  <akim@epita.fr>

        * tests/regression.m4 (%union and --defines): New test,
        demonstrating a current bug in the obstack implementation.

2000-11-17  Akim Demaille  <akim@epita.fr>

        * src/bison.s1 (_YY_DECL_VARIABLES, YY_DECL_VARIABLES): New
        macros.
        Use them to declare the variables which are global or local to
        `yyparse'.

2000-11-17  Akim Demaille  <akim@epita.fr>

        * acconfig.h: Remove, no longer used.

2000-11-07  Akim Demaille  <akim@epita.fr>

        * src: s/Copyright (C)/Copyright/g.

2000-11-07  Akim Demaille  <akim@epita.fr>

        * src/reader.c (reader): #define YYLSP_NEEDED to 1 instead of just
        defining.
        * src/bison.s1: s/#ifdef YYLSP_NEEDED/#if YYLSP_NEEDED/.

2000-11-07  Akim Demaille  <akim@epita.fr>

        * src/bison.s1 (YYLEX): Use #if instead of #ifdef.
        Merge in a single CPP if/else.

2000-11-07  Akim Demaille  <akim@epita.fr>

        * src/output.c (output): Remove useless variables.
        * lib/obstack.c (obstack_grow, obstack_grow0): Rename the second
        argument `data' for consistency with the prototypes.
        Qualify it `const'.
        (obstack_copy, obstack_copy0): Rename the second argument as
        `address' for consistency.  Qualify it `const'.
        * lib/obstack.h (obstack_copy, obstack_copy0, obstack_grow)
        (obstack_grow0, obstack_ptr_grow, obstack_ptr_grow_fast): Qualify
        `const' their input argument (`data' or `address').
        Adjust the corresponding macros to include `const' in casts.

2000-11-03  Akim Demaille  <akim@epita.fr>

        * src/Makefile.am (INCLUDES): s/PFILE/BISON_SIMPLE/.
        s/PFILE1/BISON_HAIRY/.
        Adjust dependencies.

2000-11-03  Akim Demaille  <akim@epita.fr>

        For some reason, this was not applied.

        * src/files.c [VMS]: No longer include `ssdef.h', no longer define
        `unlink': it's no longer used.

2000-11-03  Akim Demaille  <akim@epita.fr>

        * src/files.c (skeleton_find): New function, eved out of...
        (open_files, open_extra_files): here.

2000-11-03  Akim Demaille  <akim@epita.fr>

        Don't use `atexit'.

        * src/files.c (obstack_save): New function.
        (done): Rename as...
        (output_files): this.
        Use `obstack_save'.
        * src/main.c (main): Don't use `atexit' to register `done', since
        it no longer has to remove tmp files, just call `output_files'
        when there are no errors.

2000-11-02  Akim Demaille  <akim@epita.fr>

        * src/files.c [VMS]: No longer include `ssdef.h', no longer define
        `unlink': it's no longer used.
        * src/files.h: Formatting changes.

2000-11-02  Akim Demaille  <akim@epita.fr>

        Remove the last uses of mktemp and unlink/delete.

        * src/files.c (fdefines, ftable): Removed.
        (defines_ostack, table_obstack): New.
        Adjust dependencies of the former into uses of the latter.
        * src/output.c (output_short_or_char_table, output_short_table):
        Convert to using obstacks.
        * src/reader.c (copy_comment2): Accept one FILE * and two
        obstacks.
        (output_token_defines, reader_output_yylsp): Use obstacks.
        * src/system.h (obstack_fgrow3): New.
        * po/POTFILES.in: Adjust.

2000-11-01  Akim Demaille  <akim@epita.fr>

        Change each use of `fattrs' into a use of `attrs_obstack'.

        * src/reader.c (copy_at): Typo: s/yylloc/yyloc/.
        * src/files.c (fattrs): Remove.
        (attrs_obstack): New.
        Adjust all dependencies.
        (done): If SEMANTIC_PARSER, dump attrs_obstack into attrsfile.

2000-11-01  Akim Demaille  <akim@epita.fr>

        Introduce obstacks.
        Change each use of `faction' into a use of `action_obstack'.

        * lib/obstack.h, lib/obstack.c: New files.
        * src/files.c (faction): Remove.
        (action_obstack): New.
        Adjust all dependencies.

2000-10-20  Akim Demaille  <akim@epita.fr>

        * lib/quote.h (PARAMS): New macro.  Use it.

2000-10-16  Akim Demaille  <akim@epita.fr>

        * src/output.c (output_short_or_char_table): New function.
        (output_short_table, output_token_translations): Use it.
        (goto_actions): Use output_short_table.

2000-10-16  Akim Demaille  <akim@epita.fr>

        * src/symtab.c (bucket_new): New function.
        (getsym): Use it.

        * src/output.c (output_short_table): New argument to display the
        comment associated with the table.
        Adjust dependencies.
        (output_gram): Use it.
        (output_rule_data): Nicer output layout for YYTNAME.

2000-10-16  Akim Demaille  <akim@epita.fr>

        * src/lex.c (read_typename): New function.
        (lex): Use it.
        * src/reader.c (copy_dollar): Likewise.

2000-10-16  Akim Demaille  <akim@epita.fr>

        * src/reader.c (copy_comment2): Expect the input stream to be on
        the `/' which is suspected to open a comment, instead of being
        called after `//' or `/*' was read.
        (copy_comment, copy_definition, parse_union_decl, copy_action)
        (copy_guard): Adjust.

2000-10-16  Akim Demaille  <akim@epita.fr>

        * src/reader.c (parse_expect_decl): Use `skip_white_space' and
        `read_signed_integer'.

2000-10-16  Akim Demaille  <akim@epita.fr>

        * src/reader.c (copy_dollar): New function.
        (copy_guard, copy_action): Use it.

2000-10-16  Akim Demaille  <akim@epita.fr>

        * lib/quote.h, lib/quote.c, lib/quotearg.h, lib/quotearg.c:
        * m4/prereq.m4, m4/c-bs-a.m4, m4/mbstate.m4:
        New files, from Fileutils 4.0.27.
        * src/main.c (printable_version): Remove.
        * src/lex.c, src/reader.c: Use `quote'.

2000-10-04  Akim Demaille  <akim@epita.fr>

        * lib/error.c, lib/error.h: New files, needed by xmalloc.c.

2000-10-04  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo: Various typos spotted by Neil Booth.

2000-10-04  Akim Demaille  <akim@epita.fr>

        When a literal string is used to define two different tokens,
        `bison -v' segfaults.
        Reported by Piotr Gackiewicz, and fixed by Neil Booth.

        * tests/regression.m4: New file.
        Include the core of the sample provided by Piotr Gackiewicz.
        * src/reader.c (parse_token_decl): Diagnose bad cases, and proceed
        properly.

2000-10-04  Akim Demaille  <akim@epita.fr>

        * src/reader.c (parse_expect_decl): Keep `count' within the size
        of `buffer'.
        From Neil Booth.

2000-10-02  Paul Eggert  <eggert@twinsun.com>

        * bison.s1 (yyparse): Assign the default value
        unconditionally, to avoid a GCC warning and make the parser a
        tad smaller.

2000-10-02  Akim Demaille  <akim@epita.fr>

        * src/getargs.c (getargs): Don't dump `--help' on unrecognized
        options.

2000-10-02  Akim Demaille  <akim@epita.fr>

        * src/derives.c, src/print.c, src/reduce.c: To ease the
        translation, move some `\n' out of the translated strings.

2000-10-02  Akim Demaille  <akim@epita.fr>

        The location tracking mechanism is precious for parse error
        messages.  Nevertheless, it is enabled only when `@n' is used in
        the grammar, which is a different issue (you can use it in error
        message, but not in the grammar per se).  Therefore, there should
        be another means to enable it.

        * src/getargs.c (getargs): Support `--locations'.
        (usage): Report it.
        * src/getargs.h (locationsflag): Export it.
        * src/lex.c (percent_table): Support `%locations'.
        * src/reader.c (yylsp_needed): Remove this variable, now replaced
        with `locationsflag'.
        * doc/bison.texinfo: Document `--locations' and `%locations'.
        Sort the options.
        * tests/calc.m4: Test it.

        For regularity of the names, replace each
        (nolineflag, toknumflag, rawtokenumflag, noparserflag): with...
        (no_lineflag, token_tableflag, rawflag, no_parserflag): this.
        In addition replace each `flag' with `_flag'.

2000-10-02  Akim Demaille  <akim@epita.fr>

        Also test parse error messages, including with YYERROR_VERBOSE.

        * tests/calc.m4 (calc.y): Add support for `exp = exp' (non
        associative).
        Use it to check the computations.
        Use it to check `nonassoc' is honored.
        (AT_DATA_CALC_Y): Equip `calc.y' with YYERROR_VERBOSE when passed
        `--yyerror-verbose'.
        (_AT_CHECK_CALC): Adjust to this option.
        (_AT_CHECK_CALC_ERROR): New macro to check parse error messages.

2000-10-02  Akim Demaille  <akim@epita.fr>

        Test also `--verbose', `--defines' and `--name-prefix'.  Testing
        the latter demonstrates a flaw in the handling of non debugging
        parsers introduced by myself on 2000-03-16: `#define yydebug 0'
        was used in order to simplify:

        #if YYDEBUG
        if (yydebug)
        {
        ...
        }
        #endif

        into

        if (yydebug)
        {
        ...
        }

        unfortunately this leads to a CPP conflict when
        `--name-prefix=foo' is used since it produces `#define yydebug
        foodebug'.

        * src/bison.s1 [!YYDEBUG]: Do not define yydebug.
        (YYDPRINTF): New macro.
        Spread its use.
        * tests/calc.m4 (AT_CHECK_CALC): Do require a title, build it from
        the bison options.
        Also test `--verbose', `--defines' and `--name-prefix'.

2000-10-02  Akim Demaille  <akim@epita.fr>

        Improve the readability of the produced parsers.

        * src/bison.s1: Formatting changes.
        Improve the comment related to the `$' mark.
        (yydefault): Don't fall through to `yyresume': `goto' there.
        * src/output.c (output_parser): When the `$' is met, skip the end
        of its line.
        New variable, `number_of_dollar_signs', to check there's exactly
        one `$' in the parser skeleton.

2000-10-02  Akim Demaille  <akim@epita.fr>

        * lib/xstrdup.c: New file, from the fileutils.
        * src/reader.c (parse_token_decl, get_type_name, parse_type_decl)
        (parse_assoc_decl, parse_thong_decl, get_type): Use `xstrdup'
        instead of strlen + xmalloc + strcpy.
        * src/symtab.c (copys): Remove, use xstrdup instead.

2000-10-02  Akim Demaille  <akim@epita.fr>

        * src/gram.h (associativity): New enum type which replaces the
        former CPP macros `RIGHT_ASSOC', `LEFT_ASSOC' and `NON_ASSOC' with
        `right_assoc', `left_assoc' and `non_assoc'.
        Adjust all dependencies.
        * src/reader.c: Formatting changes.
        (LTYPESTR): Don't define it, use it as a literal in
        `reader_output_yylsp'.
        * src/symtab.h (symbol_class): New enum type which replaces the
        former CPP macros `SUNKNOWN', `STOKEN and `SNTERM' with
        `sunknown', `stoken and `snterm'.

2000-10-02  Akim Demaille  <akim@epita.fr>

        * src/getargs.c (fixed_outfiles): Rename as...
        (yaccflag): for consistency and accuracy.
        Adjust dependencies.

2000-10-02  Akim Demaille  <akim@epita.fr>

        Use the more standard files `xalloc.h' and `xmalloc.c' instead of
        Bison's `allocate.c' and `alloc.h'.  This patch was surprisingly
        difficult and introduced a lot of core dump.  It turns out that
        Bison used an implementation of `xmalloc' based on `calloc', and
        at various places it does depend upon the initialization to 0.  I
        have not tried to isolate the pertinent places, and all the former
        calls to Bison's `xmalloc' are now using `XCALLOC'.  Someday,
        someone should address this issue.

        * src/allocate.c, src/alloc.h, m4/bison-decl.m4: Remove.
        * lib/xmalloc.c, lib/xalloc.h, m4/malloc.m4, m4/realloc.m4: New
        files.
        Adjust dependencies.
        * src/warshall.h: New file.
        Propagate.

2000-10-02  Akim Demaille  <akim@epita.fr>

        Various anti-`extern in *.c' changes.

        * src/system.h: Include `assert.h'.

2000-10-02  Akim Demaille  <akim@epita.fr>

        * src/state.h (nstates, final_state, first_state, first_shift)
        (first_reduction): Move their exportation from here...
        * src/LR0.h: to here.
        Adjust dependencies.
        * src/getargs.c (statisticsflag): New variable.
        Add support for `--statistics'.
        Adjust dependencies.

        Remove a lot of now useless `extern' statements in most files.

2000-10-02  Akim Demaille  <akim@epita.fr>

        * src/LR0.h: New file.
        Propagate its use.

2000-10-02  Akim Demaille  <akim@epita.fr>

        * src/print.h: New file.
        Propagate its use.
        * src/print.c: Formatting and ordering changes.
        (verbose, terse): Replace with...
        (print_results): this new function.
        Adjust dependencies.

2000-10-02  Akim Demaille  <akim@epita.fr>

        * src/conflicts.c (conflict_report): New function.
        (conflict_log, verbose_conflict_log): Replace with...
        (print_conflicts): this function.
        Adjust dependencies.
        * src/conflicts.h: New file.
        Propagate its inclusion.

2000-10-02  Akim Demaille  <akim@epita.fr>

        * src/nullable.h: New file.
        Propagate its inclusion.
        * src/nullable.c: Formatting changes.

2000-10-02  Akim Demaille  <akim@epita.fr>

        * src/reduce.h: New file.
        Propagate its inclusion.
        * src/reduce.c: Topological sort and other formatting changes.
        (bool, TRUE, FALSE): Move their definition to...
        * src/system.h: here.

2000-10-02  Akim Demaille  <akim@epita.fr>

        * src/files.c: Formatting changes.
        (tryopen, tryclose, openfiles): Rename as...
        (xfopen, xfclose, open_files): this.
        (stringappend): static.
        * src/files.h: Complete the list of exported symbols.
        Propagate its use.

2000-10-02  Akim Demaille  <akim@epita.fr>

        * src/reader.h: New file.
        Propagate its use instead of tedious list of `extern' and
        prototypes.
        * src/reader.c: Formatting changes, topological sort,
        s/register//.

2000-10-02  Akim Demaille  <akim@epita.fr>

        * src/lex.h: Prototype `lex.c' exported functions.
        * src/reader.c: Adjust.
        * src/lex.c: Formatting changes.
        (safegetc): Rename as...
        (xgetc): this.

2000-10-02  Akim Demaille  <akim@epita.fr>

        * src/lalr.h: New file.
        Propagate its inclusion instead of prototypes and `extern'.
        * src/lalr.c: Formatting changes, topological sorting etc.

2000-10-02  Akim Demaille  <akim@epita.fr>

        * src/output.c (token_actions): Introduce a temporary array,
        YYDEFACT, that makes it possible for this function to use
        output_short_table.

2000-10-02  Akim Demaille  <akim@epita.fr>

        `user_toknums' is output as a `short[]' in `output.c', while it is
        defined as a `int[]' in `reader.c'.  For consistency with the
        other output tables, `user_toknums' is now defined as a table of
        shorts.

        * src/reader.c (user_toknums): Be a short table instead of an int
        table.
        Adjust dependencies.

        Factor the short table outputs.

        * src/output.c (output_short_table): New function.
        * src/output.c (output_gram, output_stos, output_rule_data)
        (output_base, output_table, output_check):  Use it.

2000-10-02  Akim Demaille  <akim@epita.fr>

        * src/output.c (output): Topological sort of the functions, in
        order to get rid of the `static' prototypes.
        No longer use `register'.
        * src/output.h: New file.
        Propagate its inclusion in files explicitly prototyping functions
        from output.c.

2000-09-21  Akim Demaille  <akim@epita.fr>

        * src/atgeneral.m4: Update from Autoconf.

2000-09-21  Akim Demaille  <akim@epita.fr>

        * src/closure.h: New file.
        * src/closure.c: Formatting changes, topological sort over the
        functions, use of closure.h.
        (initialize_closure, finalize_closure):  Rename as...
        (new_closure, free_closure): these.  Adjust dependencies.
        * src/LR0.c: Formatting changes, topological sort, use of
        cloture.h.
        (initialize_states): Rename as...
        (new_states): this.
        * src/Makefile.am (noinst_HEADERS): Adjust.

2000-09-20  Akim Demaille  <akim@epita.fr>

        * src/acconfig.h: Don't protect config.h against multiple
        inclusion.
        Don't define PARAMS.
        * src/system.h: Define PARAMS.
        Remove some of the ad-hoc CPP magic for DOS, VMS etc.: this is the
        purpose of config.h.  system.h must not try to fix wrong
        definitions in config.h.

2000-09-20  Akim Demaille  <akim@epita.fr>

        * src/derives.h: New file.
        * src/main.c, src/derives.h: Use it.
        Formatting changes.
        * src/Makefile.am (noinst_HEADERS): Adjust.

2000-09-20  Akim Demaille  <akim@epita.fr>

        * tests/atgeneral.m4: Update from Autoconf.
        * tests/calc.m4 (_AT_DATA_CALC_Y, AT_DATA_CALC_Y, _AT_CHECK_CALC)
        (AT_CHECK_CALC): New macros.
        Use these macros to test bison with options `', `--raw',
        `--debug', `--yacc', `--yacc --debug'.

2000-09-19  Akim Demaille  <akim@epita.fr>

        * src/output.c: Formatting changes.
        * src/machine.h: Remove, leaving its contents in...
        * src/system.h: here.
        Include stdio.h.
        Adjust all dependencies on stdio.h and machine.h.
        * src/getargs.h: New file.
        Let all `extern' declarations about getargs.c be replaced with
        inclusion of `getargs.h'.
        * src/Makefile.am (noinst_HEADERS): Adjust.

        * tests/calc.m4 (yyin): Be initialized in main, not on the global
        scope.
        (yyerror): Returns void, not int.
        * doc/bison.texinfo: Formatting changes.

2000-09-19  Akim Demaille  <akim@epita.fr>

        * tests/calc.m4 (calc.y): Do not assign to stdin, as it's not
        portable.

2000-09-18  Akim Demaille  <akim@epita.fr>

        * configure.in: Append WARNING_CFLAGS to CFLAGS.
        * src/Makefile.am (INCLUDES): Don't.
        Be ready to fetch headers in lib/.

2000-09-18  Akim Demaille  <akim@epita.fr>

        * doc/bison.texinfo: Update the copyright.
        ANSIfy and GNUify the examples.
        Remove the old menu.

2000-09-18  Akim Demaille  <akim@epita.fr>

        First set of tests: use the `calc' example from the documentation.

        * src/bison.s1 (yyparse): Condition the code using `yytname' which
        is defined only when YYDEBUG is.
        * m4/atconfig.m4 (AT_CONFIG): Adjust to Autoconf 2.13.
        * src/files.c (tryopen, tryclose): Formatting changes.
        Move to the top and be static.
        * src/reader.c (read_signed_integer): Likewise.
        * tests/calc.m4: New file.
        * Makefile.am, suite.m4: Adjust.
        * m4/atconfig.m4: Set BISON_SIMPLE and BISON_HAIRY.

2000-09-18  Akim Demaille  <akim@epita.fr>

        Add support for an Autotest test suite for Bison.

        * m4/m4.m4, m4/atconfig.m4: New files.
        * m4/Makefile.am (EXTRA_DIST): Adjust.
        * tests/suite.m4, tests/Makefile.am, tests/atgeneral.m4: New
        files.
        * src/getargs.c: Display a more standard --version message.
        * src/reader.c (reader): Formatting changes.
        No longer depend upon VERSION_STRING.
        * configure.in: No longer use `dnl'.
        Set up the test suite and the new directory `tests/.
        (VERSION_STRING): Remove.

2000-04-14  Akim Demaille  <akim@epita.fr>

        * src/reader.c (copy_comment2): New function, same as former
        `copy_comment', but outputs into two FILE *.
        (copy_comment): Use it.
        (parse_union_decl): Use it.
        (get_type, parse_start_decl): Use the same `invalid' message.
        (parse_start_decl, parse_union_decl): Use the same `multiple'
        message.
        (parse_union_decl, copy_guard, copy_action): Use the same
        `unmatched' message.
        * m4/Makefile.am (EXTRA_DIST): Add `warning.m4'.

2000-03-31  Akim Demaille  <akim@epita.fr>

        * src/files.c (tryopen, tryclose): Move to the top.
        Be static.

2000-03-31  Akim Demaille  <akim@epita.fr>

        * src/main.c (main): Don't call `done', exit does it.

2000-03-31  Akim Demaille  <akim@epita.fr>

        * allocate.c: s/return (foo)/return foo/.
        * lalr.c: Likewise.
        * LR0.c: Likewise.
        * output.c: Likewise.
        * reader.c: Likewise.
        * symtab.c: Likewise.
        * vmsgetargs.c: Likewise.

2000-03-31  Akim Demaille  <akim@epita.fr>

        Clean up the error reporting functions.

        * src/report.c: New file.
        * src/report.h: Likewise.
        * src/Makefile.am: Adjust.
        * m4/error.m4: New file.
        * m4/Makefile.am: Adjust.
        * configure.in (jm_PREREQ_ERROR): Call it.
        * src/main.c (int_to_string, banner, fatal_banner, warn_banner):
        Remove.
        (fatal, fatals): Remove.  All callers use complain.c::fatal.
        (warn, warni, warns, warnss, warnss): Remove.  All callers use
        complain.c::complain.
        (toomany): Remove, use fatal instead.
        * src/files.c (done): No argument, use complain_message_count.
        * src/main.c (main): Register `done' to `atexit'.

        * src/getargs.c (usage): More `fputs', less `fprintf'.

2000-03-28  Akim Demaille  <akim@epita.fr>

        * lib/: New directory.
        * Makefile.am (SUBDIRS): Adjust.
        * configure.in: Adjust.
        (LIBOBJS): Although not used yet, AC_SUBST it, otherwise it's
        useless.
        * src/alloca.c: Moved to lib/.
        * src/getopt.c: Likewise.
        * src/getopt1.c: Likewise.
        * src/getopt.h: Likewise.
        * src/ansi2knr.c: Likewise.
        * src/ansi2knr.1: Likewise.
        * src/Makefile.am: Adjust.
        * lib/Makefile.am: New file.

2000-03-28  Akim Demaille  <akim@epita.fr>

        * src/getargs.c (usage): Refresh the help message.

2000-03-17  Akim Demaille  <akim@epita.fr>

        * src/getopt1.c: Updated from textutils 2.0e
        * src/getopt.c: Likewise.
        * src/getopt.h: Likewise.

2000-03-17  Akim Demaille  <akim@epita.fr>

        * src/Makefile.am (bison.simple): Fix the awk program: quote only
        the file name, not the whole `#line LINE FILE'.

2000-03-17  Akim Demaille  <akim@epita.fr>

        On syntax errors, report the token on which we choked.

        * src/bison.s1 (yyparse): In the label yyerrlab, when
        YYERROR_VERBOSE, add yychar in msg.

2000-03-17  Akim Demaille  <akim@epita.fr>

        * src/reader.c (copy_at): New function.
        (copy_guard): Use it.
        (copy_action): Use it.

2000-03-17  Akim Demaille  <akim@epita.fr>

        Be kind to translators, save some useless translations.

        * src/main.c (banner): New function.
        (fatal_banner): Use it.
        (warn_banner): Use it.

2000-03-17  Akim Demaille  <akim@epita.fr>

        * src/reader.c (copy_definition): Use copy_string and
        copy_comment.  Removed now unused `match', `ended',
        `cplus_comment'.
        (copy_comment, copy_string): Moved, to be visible from
        copy_definition.

2000-03-17  Akim Demaille  <akim@epita.fr>

        * src/reader.c (copy_string): Declare `static inline'.  No
        problems with inline, since it is checked by configure.
        (copy_comment): Likewise.

2000-03-17  Akim Demaille  <akim@epita.fr>

        * src/reader.c (packsymbols): Formatting changes.

2000-03-17  Akim Demaille  <akim@epita.fr>

        * src/reader.c (copy_comment): New function, factored out from:
        (copy_action): Use it.  Removed now unused `match', `ended',
        `cplus_comment'.
        (copy_guard): Likewise.

2000-03-17  Akim Demaille  <akim@epita.fr>

        * src/reader.c (copy_string): New function, factored out from:
        (copy_action): Use it.
        (copy_guard): Likewise.

2000-03-17  Akim Demaille  <akim@epita.fr>

        Change the handling of @s so that they behave exactly like $s.
        There is now a pseudo variable @$ (readble and writable), location
        of the lhs of the rule (by default ranging from the location of
        the first symbol of the rhs, to the location of the last symbol,
        or, if the rhs is empty, YYLLOC).

        * src/bison.s1 [YYLSP_NEEDED] (yyloc): New variable, twin of
        yyval.
        (yyparse): When providing a default semantic action, provide a
        default location action.
        (after the $): No longer change `*YYLSP', just stack YYLOC the
        same way you stack YYVAL.
        * src/reader.c (read_declarations): Use warns.
        (copy_guard, case '@'): Also recognize `@$', expanded as `YYLOC'.
        (copy_action, case '@'): Likewise.
        Use a standard error message, to save useless work from
        translators.

2000-03-17  Akim Demaille  <akim@epita.fr>

        * src/bison.s1: Formatting and cosmetics changes.
        * src/reader.c: Likewise.
        Update the Copyright notice.

2000-03-17  Akim Demaille  <akim@epita.fr>

        * src/bison.s1 (#line): All set to `#line' only, since the
        Makefile now handles them.

2000-03-16  Akim Demaille  <akim@epita.fr>

        * src/output.c (output_rule_data): Output the documentation of
        some of the tables.
        (Copyright notice): Update.
        Formatting changes.

2000-03-16  Akim Demaille  <akim@epita.fr>

        * src/bison.s1 [!YYDEBUG]: Define yydebug to 0.  This allows to
        remove most `#if YYDEBUG != 0', since `if (yydebug)' is enough.
        One `#if YYDEBUG' remains, since it uses variables which are
        defined only if `YYDEBUG != 0'.

2000-03-16  Akim Demaille  <akim@epita.fr>

        * src/bison.s1 (yyparse): Reorganize the definitions of the stacks
        and related variables so that the similarities are highlighted.

2000-03-16  Akim Demaille  <akim@epita.fr>

        * src/bison.s1: Properly indent CPP directives.

2000-03-16  Akim Demaille  <akim@epita.fr>

        * src/bison.s1: Properly indent the `alloca' CPP section.

2000-03-16  Akim Demaille  <akim@epita.fr>

        Do not hard code values of directories in `configure.in'.
        Update the `configure' tool chain.

        * configure.in (XPFILE, XPFILE1, LOCALEDIR): Remove, handled by
        src/makefile.am.
        (VERSION_STRING): Use the third arg of AC_DEFINE_UNQUOTED.
        (AC_OUTPUT): Add m4/Makefile.
        Bump to bison 1.28a, 1.29 has never been released.
        * acconfig.h (XPFILE, XPFILE1, LOCALEDIR): Remove, since they are
        handled via src/Makefile.am.
        (VERSION_STRING, PROTOTYPES, ENABLE_NLS, HAVE_CATGETS,
        HAVE_GETTEXT, HAVE_LC_MESSAGES, HAVE_STPCPY): Remove, handled by
        autoheader.
        * Makefile.am (SUBDIRS): Add m4.
        (ACLOCAL_AM_FLAGS): New variable.
        (AUTOMAKE_OPTIONS): Add check-news.
        * src/Makefile.am (bison.simple): Use awk to replace #line lines with
        the proper line number and file name.
        (DEFS): Propagate the location of bison library files and of the
        locale files.
        (INCLUDES): Added `-I ..' so that one can compile with srcdir !=
        builddir.
        * acinclude.m4: Remove, replaced by the directory m4.
        * m4/Makefile.am (EXTRA_DIST): New variable.
        * m4/gettext.m4: New file, from the fileutils.
        * m4/lcmessage.m4: Likewise
        * m4/progtest.m4: Likewise.
        * m4/bison-decl.m4: New file, extracted from former acinclude.m4.

2000-03-10  Akim Demaille  <akim@epita.fr>

        * src/closure.c:
        Formatting changes of various comments.
        Respect the GNU coding standards at various places.
        Don't use `_()' when no translation is needed.

1999-12-13  Jesse Thilo  <jthilo@gnu.org>

        * src/files.c:
        OS/2 honors TMPDIR environment variable.

1999-12-13  Jesse Thilo  <jthilo@gnu.org>

        * doc/bison.texinfo: Tweaked spelling and grammar.
        Updated ISBN.
        Removed reference to price of printed copy.
        Mention BISON_SIMPLE and BISON_HAIRY.

1999-12-13  Jesse Thilo  <jthilo@gnu.org>

        * configure.in, NEWS:
        Bison 1.29 released.

1999-10-27  Jesse Thilo  <jthilo@gnu.org>

        * doc/.cvsignore, doc/Makefile.am, doc/refcard.tex:
        Added reference card.

1999-07-26  Jesse Thilo  <jthilo@gnu.org>

        * po/ru.po: Added Russian translation.

1999-07-26  Jesse Thilo  <jthilo@gnu.org>

        * configure.in: Added Russian translation.

1999-07-06  Jesse Thilo  <jthilo@gnu.org>

        * configure.in, NEWS, README:
        Released version 1.28.

1999-06-14  Jesse Thilo  <jthilo@gnu.org>

        * src/system.h:
        Squashed redefinition warning on some systems.

        * src/getargs.c, src/Makefile.am, src/reader.c, src/version.c:
        Have configure build version string instead of relying on ANSI string
        concatentation.

1999-06-14  Jesse Thilo  <jthilo@gnu.org>

        * po/POTFILES.in: Got rid of version.c.

1999-06-14  Jesse Thilo  <jthilo@gnu.org>

        * acconfig.h, configure.in:
        Have configure build version string instead of relying on ANSI string
        concatentation.

1999-06-08  Jesse Thilo  <jthilo@gnu.org>

        * doc/bison.1:
        Dropped mention of `+' for long-named options.

1999-05-30  Jesse Thilo  <jthilo@gnu.org>

        * src/files.c: Added <unistd.h> for unlink().

        * src/Makefile.am, src/system.h:
        I18n fixes.

1999-05-30  Jesse Thilo  <jthilo@gnu.org>

        * README: Added a FAQ list.

        * configure.in, acconfig.h:
        I18n fixes.

1999-05-30  Jesse Thilo  <jthilo@gnu.org>

        * doc/FAQ, doc/Makefile.am:
        Added a FAQ list.

1999-05-19  Jesse Thilo  <jthilo@gnu.org>

        * src/alloc.h, src/symtab.h, src/version.c:
        Protected inclusion of "config.h" with HAVE_CONFIG_H.

1999-04-18  Jesse Thilo  <jthilo@gnu.org>

        * src/.cvsignore, src/Makefile.am:
        Reorganized: sources in `src', documentation in `doc'.

        * src/lex.c (literalchar):
        fixed the code for escaping double quotes (thanks
        Jonathan Czisny.)

1999-04-18  Jesse Thilo  <jthilo@gnu.org>

        * po/de.po, po/es.po, po/fr.po, po/nl.po, po/POTFILES.in:
        Adjusted paths to reflect directory reorganization.

1999-04-18  Jesse Thilo  <jthilo@gnu.org>

        * doc/.cvsignore, doc/Makefile.am:
        Reorganized: sources in `src', documentation in `doc'.

1999-04-18  Jesse Thilo  <jthilo@gnu.org>

        * configure.in:
        Updated AC_INIT file to reflect directory reorganization.

        * configure.in, .cvsignore, Makefile.am, POTFILES.in:
        Reorganized: sources in `src', documentation in `doc'.

1999-04-13  Jesse Thilo  <jthilo@gnu.org>

        * src/allocate.c:
        Don't declare calloc() and realloc() if not necessary.

1999-04-13  Jesse Thilo  <jthilo@gnu.org>

        * configure.in, acconfig.h, acinclude.m4:
        Don't declare calloc() and realloc() if not necessary.

1999-03-23  Jesse Thilo  <jthilo@gnu.org>

        * po/.cvsignore: Added i18n support.

1999-03-23  Jesse Thilo  <jthilo@gnu.org>

        * acconfig.h, configure.in, Makefile.am:
        Added i18n support.

1999-03-22  Jesse Thilo  <jthilo@gnu.org>

        * src/bison.s1: Fixed #line numbers.

1999-03-15  Jesse Thilo  <jthilo@gnu.org>

        * po/es.po, po/fr.po, po/nl.po, po/de.po:
        Added PO files from Translation Project.

1999-03-03  Jesse Thilo  <jthilo@gnu.org>

        * Makefile.am:
        Added support for non-ANSI compilers (ansi2knr).

1999-02-16  Jesse Thilo  <jthilo@gnu.org>

        * configure.in: Bumped version number to 1.27.

        * Makefile.am:
        Added `bison.simple' to list of files removed by `make distclean'.

1999-02-12  Jesse Thilo  <jthilo@gnu.org>

        * src/files.c, src/files.h:
        Defined locations of parser files in config.h instead of Makefile.

1999-02-12  Jesse Thilo  <jthilo@gnu.org>

        * acconfig.h, acinclude.m4, configure.in, Makefile.am:
        Defined locations of parser files in config.h instead of Makefile.

1999-02-09  Jesse Thilo  <jthilo@gnu.org>

        * Makefile.am:
        Removed inappropriate use of $< macro.

1999-02-05  Jesse Thilo  <jthilo@gnu.org>

        * po/Makefile.in.in, po/POTFILES.in:
        Add `po' directory skeleton.

1999-01-27  Jesse Thilo  <jthilo@gnu.org>

        * README: Document help-bison list.

        * configure.in: Add check for mkstemp().

1999-01-20  Jesse Thilo  <jthilo@gnu.org>

        * src/conflicts.c, src/LR0.c, src/output.c, src/reader.c:
        Hush a few compiler warnings.

        * src/files.c:
        Add tryclose(), which verifies that fclose was successful.
        Hush a couple of compiler warnings.

1999-01-20  Jesse Thilo  <jthilo@gnu.org>

        * Makefile.am, OChangeLog:
        ChangeLog is now automatically generated.  Include the old version as
        OChangeLog.

1999-01-14  Jesse Thilo  <jthilo@gnu.org>

        * src/gram.h, src/lalr.c, src/lex.c, src/lex.h, src/machine.h, src/main.c, src/nullable.c, src/output.c, src/print.c, src/reader.c, src/reduce.c, src/state.h, src/symtab.c, src/symtab.h, src/types.h, src/vmsgetargs.c, src/warshall.c, src/allocate.c, src/alloc.h, src/bison.s1, src/closure.c, src/conflicts.c, src/derives.c, src/files.c, src/files.h, src/getargs.c, src/gram.c, src/LR0.c:
        Update FSF address.

1999-01-14  Jesse Thilo  <jthilo@gnu.org>

        * doc/bison.texinfo: Fix formatting glitch.

        * doc/bison.texinfo: Update FSF address.

1999-01-14  Jesse Thilo  <jthilo@gnu.org>

        * acconfig.h: Update FSF address.

1999-01-08  Jesse Thilo  <jthilo@gnu.org>

        * src/system.h:
        Don't define PACKAGE here, since config.h defines it.

1998-12-30  Jesse Thilo  <jthilo@gnu.org>

        * src/reader.c: Update copyright date.

        * src/main.c:
        Ditch sprintf to statically-sized buffers in fatal/warn functions in
        favor of output directly to stderr (avoids buffer overruns).

        * src/reader.c: Some checks for premature EOF.

        * src/allocate.c, src/alloc.h, src/closure.c, src/conflicts.c, src/derives.c, src/getargs.c, src/gram.c, src/lalr.c, src/lex.c, src/LR0.c, src/main.c, src/nullable.c, src/output.c, src/print.c, src/reduce.c, src/symtab.c, src/symtab.h, src/warshall.c:
        Use prototypes if the compiler understands them.

        * src/files.c: Honor TMPDIR on Unix hosts.
        Use prototypes if the compiler understands them.

        * src/reader.c:
        Fix a couple of buffer overrun bugs.
        Use prototypes if the compiler understands them.

        * src/system.h: Include unistd.h and ctype.h.
        Use #ifdef instead of #if for NLS symbols.

1998-12-30  Jesse Thilo  <jthilo@gnu.org>

        * doc/bison.texinfo:
        Delete comment "consider using @set for edition number, etc..." since
        we now are doing so.

1998-12-30  Jesse Thilo  <jthilo@gnu.org>

        * configure.in:
        Use prototypes if the compiler understands them.

        * NEWS: Document 1.26 highlights.

        * Makefile.am: Require Automake 1.3 or later.

        * acconfig.h:
        Use prototypes if the compiler understands them.

1998-12-29  Jesse Thilo  <jthilo@gnu.org>

        * src/version.c:
        Use VERSION symbol from automake for version number.

1998-12-29  Jesse Thilo  <jthilo@gnu.org>

        * acconfig.h, configure.in, version.cin:
        Use VERSION symbol from automake for version number.

1998-11-28  Jesse Thilo  <jthilo@gnu.org>

        * Makefile.am:
        Distribute original version of simple parser (bison.s1), not built
        version (bison.simple).

1998-11-28  Jesse Thilo  <jthilo@gnu.org>

        * doc/bison.texinfo: Add info dir entry.

        * doc/bison.texinfo:
        Let automake put version number into documentation.

1998-11-26  Jesse Thilo  <jthilo@gnu.org>

        * src/bison.cld, src/build.com, src/vmshlp.mar:
        Add non-RCS files from /gd/gnu/bison.

1998-11-26  Jesse Thilo  <jthilo@gnu.org>

        * doc/bison.1:
        Document the BISON_HAIRY and BISON_SIMPLE variables.

1998-11-25  Jesse Thilo  <jthilo@gnu.org>

        * src/version.c: Build version.c automatically.

        * src/reader.c:
        Fix token numbering (used to start at 258, not 257).

        * src/system.h: Include config.h.

        * src/getargs.c: Update bug report address.

        * src/alloca.c, src/getopt1.c, src/getopt.c, src/getopt.h:
        Get latest copies of alloca.c, getopt.c, getopt.h, getopt1.c from gnu.org.

1998-11-25  Jesse Thilo  <jthilo@gnu.org>

        * Makefile.am:
        Rename bison.simple to bison.s1 (bison.simple is then built from bison.s1).

        * configure.in, version.cin:
        Build version.c automatically.

        * AUTHORS: Add AUTHORS file.

        * README: Update bug report address.

        * bison.simple:
        Rename bison.simple to bison.s1 (bison.simple is then built from bison.s1).

        * configure.in, Makefile.am, Makefile.in, stamp-h.in:
        Add automake stuff.

1998-11-25  Jesse Thilo  <jthilo@gnu.org>

        * doc/bison.texinfo: Clean up some formatting.

1998-05-05  Richard Stallman  <rms@gnu.org>

        * doc/bison.texinfo:
        Explain better why to make a pure parser.

1998-01-05  Richard Stallman  <rms@gnu.org>

        * src/files.c (openfiles):
        [_WIN32 && !__CYGWIN32__] Use TEMP or Temp to
        find a temporary directory, if possible.  Do not unlink files while
        they are open.

1997-08-25  Richard Stallman  <rms@gnu.org>

        * src/reader.c (stack_offset;):
        Change some warni to warns.

        * src/lex.c (literalchar): Use warns, not warni.

1997-06-28  Richard Stallman  <rms@gnu.org>

        * src/bison.s1: Add a Bison version comment.

        * src/main.c (fatal, warn, berror):
        Use program_name.

1997-06-28  Richard Stallman  <rms@gnu.org>

        * Makefile.in (bison_version): New variable.
        (dist): Use that variable.
        (bison.s1): Substitute the Bison version into bison.simple.

        * bison.simple: Add a Bison version comment.

1997-06-18  Richard Stallman  <rms@gnu.org>

        * src/main.c (fatal, warn, berror):
        Make error messages standard.
        (toomany): Improve error message text.

        * src/LR0.c, src/closure.c, src/conflicts.c, src/derives.c, src/files.c, src/lalr.c, src/lex.c, src/nullable.c, src/output.c, src/print.c, src/reader.c, src/reduce.c, src/symtab.c:
        new.h renamed to alloc.h.

1997-06-18  Richard Stallman  <rms@gnu.org>

        * Makefile.in: new.h renamed to alloc.h.

1997-05-24  Richard Stallman  <rms@gnu.org>

        * src/lex.c (literalchar):
        Fix the code for escaping \, " and '.

        (lex): Avoid trouble when there are many chars
        to discard in a char literal with just several chars in it.

1997-05-17  Richard Stallman  <rms@gnu.org>

        * src/bison.s1:
        Use malloc, if using alloca is troublesome.
        (YYSTACK_USE_ALLOCA): New flag macro.
        Define it for some systems and compilers.
        (YYSTACK_ALLOC): New macro.
        (yyparse): Use YYSTACK_ALLOC to allocate stack.
        If it was malloc'd, free it.

1997-05-17  Richard Stallman  <rms@gnu.org>

        * bison.simple:
        Use malloc, if using alloca is troublesome.
        (YYSTACK_USE_ALLOCA): New flag macro.
        Define it for some systems and compilers.
        (YYSTACK_ALLOC): New macro.
        (yyparse): Use YYSTACK_ALLOC to allocate stack.
        If it was malloc'd, free it.

1997-04-23  Richard Stallman  <rms@gnu.org>

        * src/bison.s1:
        (alloca) [__hpux]: Always define as __builtin_alloca.

1997-04-23  Richard Stallman  <rms@gnu.org>

        * bison.simple:
        (alloca) [__hpux]: Always define as __builtin_alloca.

1997-04-22  Richard Stallman  <rms@gnu.org>

        * src/bison.s1:
        [__hpux]: Include alloca.h (right for HPUX 10)
        instead of declaring alloca (right for HPUX 9).

        * src/bison.s1 (__yy_memcpy):
        Declare arg `count' as unsigned int.
        (yyparse): Cast third arg to __yy_memcpy to unsigned int.

1997-04-22  Richard Stallman  <rms@gnu.org>

        * bison.simple:
        [__hpux]: Include alloca.h (right for HPUX 10)
        instead of declaring alloca (right for HPUX 9).

        * bison.simple (__yy_memcpy):
        Declare arg `count' as unsigned int.
        (yyparse): Cast third arg to __yy_memcpy to unsigned int.

1997-01-03  Richard Stallman  <rms@gnu.org>

        * src/allocate.c: [__STDC__ or _MSC_VER]:
        Declare calloc and realloc to return void *.

1997-01-02  Richard Stallman  <rms@gnu.org>

        * src/system.h:
        [_MSC_VER]: Include stdlib.h and process.h.
        [_MSC_VER] (getpid): Define as macro--translate it to _getpid.

        * src/main.c (main): Return FAILURE as a value.
        (printable_version): Declare arg as int, not char.

1997-01-02  Richard Stallman  <rms@gnu.org>

        * Makefile.in (dist):
        Explicitly check for symlinks, and copy them.

1996-12-19  Richard Stallman  <rms@gnu.org>

        * src/files.c:
        [_MSC_VER] (XPFILE, XPFILE1): Define, if not already defined.

1996-12-18  Paul Eggert  <eggert@gnu.org>

        * src/bison.s1 (yyparse):
        If __GNUC__ and YYPARSE_PARAM are both defined,
        declare yyparse to have a void * argument.

1996-12-18  Paul Eggert  <eggert@gnu.org>

        * bison.simple (yyparse):
        If __GNUC__ and YYPARSE_PARAM are both defined,
        declare yyparse to have a void * argument.

1996-12-17  Richard Stallman  <rms@gnu.org>

        * src/reduce.c (nbits): Add some casts.

1996-08-12  Richard Stallman  <rms@gnu.org>

        * src/bison.s1: Test _MSDOS as well as _MSDOS_.

1996-08-12  Richard Stallman  <rms@gnu.org>

        * bison.simple: Test _MSDOS as well as _MSDOS_.

1996-07-31  Richard Stallman  <rms@gnu.org>

        * src/bison.s1:
        [__sun && __i386]: Include alloca.h.

1996-07-31  Richard Stallman  <rms@gnu.org>

        * bison.simple:
        [__sun && __i386]: Include alloca.h.

1996-07-30  Richard Stallman  <rms@gnu.org>

        * src/bison.s1: Comment change.

        * src/bison.s1: Test _MSDOS_, not MSDOS.

1996-07-30  Richard Stallman  <rms@gnu.org>

        * bison.simple: Comment change.

        * bison.simple: Test _MSDOS_, not MSDOS.

1996-06-01  Richard Stallman  <rms@gnu.org>

        * src/reduce.c, src/reader.c, src/print.c, src/output.c, src/nullable.c, src/lex.c, src/lalr.c, src/getargs.c, src/derives.c, src/conflicts.c, src/closure.c, src/allocate.c:
        Insert `_' macro around many string constants.

        * src/main.c:
        Insert `_' macro around many string constants.

        (main): Call setlocale, bindtextdomain and textdomain.

        * src/system.h: [HAVE_LOCALE_H]: Include locale.h.
        [! HAVE_LOCALE_H] (setlocale): Define as no-op.
        [ENABLE_NLS]: Include libintl.h.
        [ENABLE_NLS] (gettext): Define.
        [! ENABLE_NLS] (bintextdomain, textdomain, _): Consolation definitions.
        (N_, PACKAGE, LOCALEDIR): New macros.

1996-06-01  Richard Stallman  <rms@gnu.org>

        * POTFILES.in: New file.

        * Makefile.in (allocate.o):
        Define target explicitly.

        * Makefile.in (CFLAGS): Set to @CFLAGS@.
        (LDFLAGS): Set to @LDFLAGS@.
        (configure): Run autoconf only if preceding `cd' succeeds.
        (bison.s1): Redirect output to temporary file then move the
        temporary to the target, rather than redirecting directly to bison.s1.
        (clean): Remove config.status and config.log.
        (distclean): Don't remove config.status here.

1996-05-12  Richard Stallman  <rms@gnu.org>

        * src/bison.s1:
        (__yy_memcpy) [__cplusplus]: Reorder declarations of variables f and t.

1996-05-12  Richard Stallman  <rms@gnu.org>

        * bison.simple:
        (__yy_memcpy) [__cplusplus]: Reorder declarations of variables f and t.

1996-05-11  Richard Stallman  <rms@gnu.org>

        * src/bison.s1 (__yy_memcpy):
        Really reorder the args, as was supposedly done on Feb 14 1995.
        (yyparse): Calls changed accordingly.

1996-05-11  Richard Stallman  <rms@gnu.org>

        * Makefile.in (dist): Don't use $(srcdir).

        * bison.simple (__yy_memcpy):
        Really reorder the args, as was supposedly done on Feb 14 1995.
        (yyparse): Calls changed accordingly.

1996-01-27  Richard Stallman  <rms@gnu.org>

        * src/output.c (output_rule_data):
        Test YYERROR_VERBOSE in the conditional
        around the definition of ttyname.

1995-12-29  Richard Stallman  <rms@gnu.org>

        * src/bison.s1:
        Fix line numbers in #line commands.

1995-12-29  Richard Stallman  <rms@gnu.org>

        * bison.simple:
        Fix line numbers in #line commands.

1995-12-27  Richard Stallman  <rms@gnu.org>

        * src/bison.s1 (YYPARSE_PARAM_DECL):
        In C++, make it always null.
        (YYPARSE_PARAM_ARG): New macro.
        (yyparse): Use YYPARSE_PARAM_ARG.

1995-12-27  Richard Stallman  <rms@gnu.org>

        * bison.simple (YYPARSE_PARAM_DECL):
        In C++, make it always null.
        (YYPARSE_PARAM_ARG): New macro.
        (yyparse): Use YYPARSE_PARAM_ARG.

1995-11-29  Richard Stallman  <rms@gnu.org>

        * doc/bison.texinfo:
        Describe literal string tokens, %raw, %no_lines, %token_table.

1995-11-29  Daniel Hagerty  <hag@gnu.org>

        * doc/bison.texinfo: Fixed update date

1995-10-16  Richard Stallman  <rms@gnu.org>

        * src/version.c: Version 1.25.

1995-10-16  Richard Stallman  <rms@gnu.org>

        * NEWS: *** empty log message ***

1995-10-16  Richard Stallman  <rms@gnu.org>

        * doc/bison.1, doc/bison.rnh:
        Add new options.

1995-10-15  Richard Stallman  <rms@gnu.org>

        * src/vmsgetargs.c, src/getargs.c:
        Added -n, -k, and -raw switches.
        (noparserflag, toknumflag, rawtoknumflag): New variables.

        * src/symtab.h (SALIAS):
        New #define for adding aliases to %token.
        (struct bucket): Added `alias' field.

        * src/reduce.c (reduce_grammar):
        Revise error message.
        (print_notices): Remove final `.' from error message.

        * src/reader.c (reader_output_yylsp):
        New function.
        (readgram): Use `#if 0' around code that accepted %command
        inside grammar rules:  The documentation doesn't allow it,
        and it will fail since the %command processors scan for the next %.
        (parse_token_decl):  Extended the %token
        declaration to allow a multi-character symbol as an alias.
        (parse_thong_decl): New function.
        (read_declarations): Added %thong declarations.
        (read_declarations): Handle NOOP to deal with allowing
        % declarations as another means to specify the flags.
        (readgram): Allow %prec prior to semantics embedded in a rule.
        (skip_to_char, read_declarations, copy_definition)
        (parse_token_decl, parse_start_decl, parse_type_decl)
        (parse_assoc_decl, parse_union_decl, parse_expect_decl)
        (get_type_name, copy_guard, copy_action, readgram)
        (get_type, packsymbols):  Revised most error messages.
        Changed `fatal' to `warnxxx' to avoid aborting for error.
        Revised and use multiple warnxxx functions to avoid using VARARGS1.
        (read_declarations): Improve the error message for
        an invalid character.  Do not abort.
        (read_declarations, copy_guard, copy_action): Use
        printable_version to avoid unprintable characters in printed output.
        (parse_expect_decl): Error if argument to %expect exceeds 10 digits.
        (parse_token_decl, parse_assoc_decl, parse_type_decl, get_type):
        Allow the type of a non-terminal can be given
        more than once, as long as all specifications give the same type.

        * src/output.c:
        (output_headers, output_trailers, output, output_gram)
        (output_rule_data): Implement noparserflag variable.
        Implement toknumflag variable.
        (output): Call reader_output_yylsp to output LTYPESTR.

        * src/main.c (main):
         If reader sees an error, don't process the grammar.
        (fatals): Updated to not use VARARGS1.
        (printable_version, int_to_string, warn, warni, warns, warnss)
        (warnsss): New error reporting functions.  Avoid abort for error.

        * src/lex.h:
        Added THONG and NOOP for alias processing.
        Added SETOPT for the new code that allows setting options with %flags.

        * src/lex.c:
        Include getopt.h.  Add some extern decls.
        (safegetc): New function to deal with EOF gracefully.
        (literalchar); new function to deal with reading \ escapes.
        (lex): Use literalchar.
        (lex): Implemented "..." tokens.
        (literalchar, lex, parse_percent_token): Made tokenbuffer
        always contain the token.  This includes growing the token
        buffer while reading an integer.
        (parse_percent_token): Replaced if-else statement with percent_table.
        (parse_percent_token): Added % declarations as another
        way to specify the flags -n, -l, and -r.  Also added hooks for
        -d, -k, -y, -v, -t, -p, -b, -o, but implementation requires
        major changes to files.c.
        (lex) Retain in the incoming stream a character following
        an incorrect '/'.
        (skip_white_space, lex):  Revised most error messages
        and changed fatal to warn to avoid aborting.
        (percent_table):  Added %thong declarations.

        * src/gram.h: Comment changes.

        * src/files.c (openfiles, open_extra_files, done):
         Add faction flag
        and actfile file.  Handle noparserflag.  Both for -n switch.

        * src/conflicts.c (resolve_sr_conflict):
        Remove use of alloca.

1995-06-01  Jim Meyering  <meyering@gnu.org>

        * doc/bison.texinfo: *** empty log message ***

1995-05-06  Richard Stallman  <rms@gnu.org>

        * src/bison.s1: Comment change.

1995-05-06  Richard Stallman  <rms@gnu.org>

        * bison.simple: Comment change.

1995-05-03  Richard Stallman  <rms@gnu.org>

        * src/version.c: Version now 1.24.

        * src/bison.s1: Change distribution terms.

        * src/version.c: Version now 1.23.

1995-05-03  Richard Stallman  <rms@gnu.org>

        * doc/bison.texinfo:
        Rewrite "Conditions for Using Bison".
        Update version to 1.24.

1995-05-03  Richard Stallman  <rms@gnu.org>

        * bison.simple: Change distribution terms.

1995-02-23  Richard Stallman  <rms@gnu.org>

        * src/files.c: Test __VMS_POSIX as well as VMS.

1995-02-14  Jim Meyering  <meyering@gnu.org>

        * src/bison.s1 (__yy_memcpy):
        Renamed from __yy_bcopy to avoid
        confusion.  Reverse FROM and TO arguments to be consistent with
        those of memcpy.

1995-02-14  Jim Meyering  <meyering@gnu.org>

        * bison.simple (__yy_memcpy):
        Renamed from __yy_bcopy to avoid
        confusion.  Reverse FROM and TO arguments to be consistent with
        those of memcpy.

1994-11-10  David J. MacKenzie  <djm@gnu.org>

        * NEWS: reformat

        * NEWS: New file.

        * Makefile.in (DISTFILES): Include NEWS.

        * Makefile.in (DISTFILES):
        Include install-sh, not install.sh.

        * configure.in: Update to Autoconf v2 macro names.

1994-10-05  David J. MacKenzie  <djm@gnu.org>

        * Makefile.in: fix typo

        * Makefile.in (prefix, exec_prefix):
        Let configure set them.

1994-09-28  David J. MacKenzie  <djm@gnu.org>

        * Makefile.in: Set datadir to $(prefix)/share.

1994-09-15  Richard Stallman  <rms@gnu.org>

        * src/bison.s1:
        Update copyright notice and GPL version.

1994-09-15  Richard Stallman  <rms@gnu.org>

        * bison.simple:
        Update copyright notice and GPL version.

1994-07-12  Richard Stallman  <rms@gnu.org>

        * src/reduce.c, src/reader.c:
        entered into RCS

1994-05-05  David J. MacKenzie  <djm@gnu.org>

        * Makefile.in: entered into RCS

1994-03-26  Richard Stallman  <rms@gnu.org>

        * src/bison.s1: entered into RCS

1994-03-26  Richard Stallman  <rms@gnu.org>

        * bison.simple: entered into RCS

1994-03-25  Richard Stallman  <rms@gnu.org>

        * src/main.c: entered into RCS

1994-03-24  Richard Stallman  <rms@gnu.org>

        * src/conflicts.c: entered into RCS

1994-01-02  Richard Stallman  <rms@gnu.org>

        * Makefile.in: *** empty log message ***

1993-11-21  Richard Stallman  <rms@gnu.org>

        * src/bison.s1: *** empty log message ***

1993-11-21  Richard Stallman  <rms@gnu.org>

        * doc/bison.texinfo: entered into RCS

        * doc/bison.texinfo: *** empty log message ***

1993-11-21  Richard Stallman  <rms@gnu.org>

        * bison.simple: *** empty log message ***

1993-10-25  David J. MacKenzie  <djm@gnu.org>

        * doc/bison.texinfo: *** empty log message ***

1993-10-19  Richard Stallman  <rms@gnu.org>

        * src/bison.s1: *** empty log message ***

1993-10-19  Richard Stallman  <rms@gnu.org>

        * bison.simple: *** empty log message ***

1993-10-14  Richard Stallman  <rms@gnu.org>

        * src/bison.s1: *** empty log message ***

1993-10-14  Richard Stallman  <rms@gnu.org>

        * bison.simple: *** empty log message ***

1993-09-14  David J. MacKenzie  <djm@gnu.org>

        * doc/bison.texinfo: *** empty log message ***

1993-09-13  Noah Friedman  <friedman@gnu.org>

        * Makefile.in: *** empty log message ***

1993-09-10  Richard Stallman  <rms@gnu.org>

        * src/conflicts.c: *** empty log message ***

        * src/system.h: entered into RCS

1993-09-10  Richard Stallman  <rms@gnu.org>

        * doc/bison.1: entered into RCS

1993-09-06  Noah Friedman  <friedman@gnu.org>

        * src/version.c: entered into RCS

1993-09-06  Noah Friedman  <friedman@gnu.org>

        * Makefile.in: *** empty log message ***

1993-07-30  David J. MacKenzie  <djm@gnu.org>

        * Makefile.in: *** empty log message ***

1993-07-24  Richard Stallman  <rms@gnu.org>

        * src/bison.s1: *** empty log message ***

1993-07-24  Richard Stallman  <rms@gnu.org>

        * bison.simple: *** empty log message ***

1993-07-08  David J. MacKenzie  <djm@gnu.org>

        * Makefile.in: *** empty log message ***

1993-07-04  Richard Stallman  <rms@gnu.org>

        * src/bison.s1: *** empty log message ***

1993-07-04  Richard Stallman  <rms@gnu.org>

        * bison.simple: *** empty log message ***

1993-06-26  David J. MacKenzie  <djm@gnu.org>

        * src/getargs.c: entered into RCS

1993-06-26  David J. MacKenzie  <djm@gnu.org>

        * doc/bison.texinfo: *** empty log message ***

        * doc/bison.1: New file.

1993-06-25  Richard Stallman  <rms@gnu.org>

        * src/getargs.c: New file.

1993-06-16  Richard Stallman  <rms@gnu.org>

        * src/bison.s1: *** empty log message ***

1993-06-16  Richard Stallman  <rms@gnu.org>

        * bison.simple: *** empty log message ***

1993-06-03  Richard Stallman  <rms@gnu.org>

        * src/bison.s1: New file.

1993-06-03  Richard Stallman  <rms@gnu.org>

        * doc/bison.texinfo: *** empty log message ***

1993-06-03  Richard Stallman  <rms@gnu.org>

        * bison.simple: New file.

1993-05-19  Richard Stallman  <rms@gnu.org>

        * doc/bison.texinfo: New file.

1993-05-07  Noah Friedman  <friedman@gnu.org>

        * Makefile.in: *** empty log message ***

1993-04-28  Noah Friedman  <friedman@gnu.org>

        * src/reader.c: *** empty log message ***

1993-04-23  Noah Friedman  <friedman@gnu.org>

        * src/alloc.h: entered into RCS

1993-04-20  David J. MacKenzie  <djm@gnu.org>

        * src/version.c: *** empty log message ***

        * src/files.c, src/allocate.c:
        entered into RCS

        * src/reader.c: *** empty log message ***

        * src/lex.c: entered into RCS

        * src/conflicts.c: New file.

        * src/symtab.c: entered into RCS

        * src/alloc.h: New file.

        * src/LR0.c: entered into RCS

1993-04-18  Noah Friedman  <friedman@gnu.org>

        * src/reader.c: New file.

        * src/version.c: *** empty log message ***

1993-04-18  Noah Friedman  <friedman@gnu.org>

        * Makefile.in: *** empty log message ***

1993-04-17  Noah Friedman  <friedman@gnu.org>

        * Makefile.in: *** empty log message ***

1993-04-15  Richard Stallman  <rms@gnu.org>

        * src/main.c, src/files.c:
        New file.

1993-04-15  Noah Friedman  <friedman@gnu.org>

        * configure.in: entered into RCS

        * configure.in: *** empty log message ***

        * configure.in: New file.

1993-04-14  Richard Stallman  <rms@gnu.org>

        * Makefile.in: New file.

1993-04-13  Richard Stallman  <rms@gnu.org>

        * src/version.c: New file.

1993-03-25  Richard Stallman  <rms@gnu.org>

        * src/output.c: entered into RCS

1992-09-25  Richard Stallman  <rms@gnu.org>

        * configure.bat: entered into RCS

1992-06-22  Richard Stallman  <rms@gnu.org>

        * src/vmsgetargs.c: entered into RCS

1992-06-22  Richard Stallman  <rms@gnu.org>

        * doc/bison.rnh: entered into RCS

1992-04-20  David J. MacKenzie  <djm@gnu.org>

        * README: entered into RCS

1992-01-22  Richard Stallman  <rms@gnu.org>

        * src/machine.h: entered into RCS

1991-12-21  Richard Stallman  <rms@gnu.org>

        * src/lalr.c, src/closure.c:
        entered into RCS

1991-12-20  Richard Stallman  <rms@gnu.org>

        * src/state.h: entered into RCS

1991-12-18  Richard Stallman  <rms@gnu.org>

        * src/print.c, src/nullable.c, src/derives.c:
        entered into RCS

1991-11-03  David J. MacKenzie  <djm@gnu.org>

        * src/warshall.c, src/types.h, src/symtab.h, src/lex.h, src/gram.c, src/gram.h, src/files.h:
        entered into RCS

1988-09-09  Richard Stallman  <rms@gnu.org>

        * src/bison.hairy: entered into RCS

1987-12-16  Richard Stallman  <rms@gnu.org>

        * REFERENCES: entered into RCS

-----

Copyright (C) 1987, 1988, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
1998, 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.

This file is part of Bison, the GNU Compiler Compiler.

Bison is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

Bison is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Bison; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.