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Revamp regular expressions so that " and '
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--- a/ChangeLog
+++ b/ChangeLog
-2002-11-04  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>
+2002-11-12  Albert Chin-A-Young <china@thewrittenword.com>
 
-       * src/tables.c (matching_state): Don't allow states to match if 
+       * 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/pipermail/bison-patches/2002-November/001329.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/pipermail/bug-bison/2002-November/001815.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.
 
        * 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.