+2009-12-18 Joel E. Denny <jdenny@clemson.edu>
+
+ lalr1.cc: don't discard non-existent lookahead on syntax error.
+ * data/lalr1.cc (parser::parse): Check yyempty first.
+ * tests/c++.at (Syntax error discarding no lookahead): New test
+ group.
+
+2009-12-17 Joel E. Denny <jdenny@clemson.edu>
+
+ Code cleanup.
+ * src/symtab.c, src/symtab.h (symbol_class_get_string): Remove
+ function, which is no longer used.
+
+2009-12-16 Joel E. Denny <jdenny@clemson.edu>
+
+ Add gcc's -Wundef to test suite and fix another warning from it.
+ * NEWS (2.4.2): Update description of -Wundef fix.
+ * configure.ac (WARN_CXXFLAGS_TEST): New substitution.
+ (WARN_CFLAGS_TEST): New substitution.
+ * data/glr.c: Avoid warning about __STRICT_ANSI__.
+ * tests/atlocal.in (CFLAGS): Use WARN_CFLAGS_TEST instead of
+ WARN_CFLAGS.
+ (NO_WERROR_CFLAGS): Likewise.
+ (CXXFLAGS): Use WARN_CXXFLAGS_TEST instead of WARN_CXXFLAGS.
+
+2009-12-16 Joel E. Denny <jdenny@clemson.edu>
+
+ * data/yacc.c: Reformat m4 a little.
+
+2009-12-16 Joel E. Denny <jdenny@clemson.edu>
+
+ Document gcc -Wundef fix.
+ * NEWS (2.4.2): Here.
+ * THANKS (Jonathan Nieder): Add.
+
+2009-12-15 Jonathan Nieder <jrnieder@gmail.com> (tiny change)
+
+ Simplify y.tab.c when location tracking is disabled.
+ * data/yacc.c: Do not check YYLTYPE_IS_TRIVIAL if location
+ tracking is not enabled. Instead, unconditionally define
+ YY_LOCATION_PRINT as a no-op for backward compatibility.
+
+2009-12-15 Jonathan Nieder <jrnieder@gmail.com> (tiny change)
+
+ Avoid warnings from gcc -Wundef y.tab.c.
+ * data/glr.c: Check if YYENABLE_NLS and YYLTYPE_IS_TRIVIAL are
+ defined before using them.
+ * data/lalr1.cc: Likewise.
+ * data/yacc.c: Likewise.
+
+2009-12-15 Joel E. Denny <jdenny@clemson.edu>
+
+ autoconf: update to latest for fix of M4 detection.
+ Reported by Eric Blake.
+ * submodules/autoconf: Update.
+
+2009-12-15 Joel E. Denny <jdenny@clemson.edu>
+
+ portability: use -DGNULIB_POSIXCHECK.
+ Reported by Eric Blake. See discussions at
+ <http://lists.gnu.org/archive/html/bug-bison/2009-09/msg00008.html>
+ and
+ <http://lists.gnu.org/archive/html/bug-gnulib/2009-10/msg00108.html>.
+ * HACKING (Release checks): Suggest -DGNULIB_POSIXCHECK.
+ * bootstrap.conf (gnulib_modules): Add all the printf modules
+ suggested by -DGNULIB_POSIXCHECK. Add realloc-posix as
+ suggested by -DGNULIB_POSIXCHECK for gnulib's own vasnprintf.c.
+ (excluded_files): Remove m4/printf-posix.m4.
+ * tests/atlocal.in (LIBS): As for LDADD in src/local.mk, add
+ lib/libbison.a so gnulib libraries can be linked.
+
+2009-12-15 Joel E. Denny <jdenny@clemson.edu>
+
+ gnulib: update for fix of fprintf-posix, which we'll use soon.
+ * etc/prefix-gnulib-mk (prefix): Adjust regex for make file
+ targets so that gnulib's new arg-nonnull.h and link-warning.h
+ are matched.
+ * gnulib: Update.
+
+2009-12-14 Joel E. Denny <jdenny@clemson.edu>
+
+ Enable assertion output and --disable-assert for configure.
+ * bootstrap.conf (gnulib_modules): Add assert module.
+ * src/system.h (aver): Define as assert, and summarize the
+ discussion on this issue.
+
+2009-12-14 Joel E. Denny <jdenny@clemson.edu>
+
+ Expand GLR acronym in summary of Bison.
+ Based on discussion with Akim Demaille starting at
+ <http://lists.gnu.org/archive/html/bison-patches/2009-04/msg00087.html>.
+ * doc/bison.texinfo (Introduction): Here.
+ * src/getargs.c (usage): Here.
+
+2009-10-03 Alex Rozenman <rozenman@gmail.com>
+
+ Document named references.
+ * doc/bison.texinfo (Actions): Add new example and xref to
+ Using Named References node.
+ (Using Named References): New node.
+
+2009-10-16 Joel E. Denny <jdenny@clemson.edu>
+
+ cleanup.
+ * src/Sbitset.c (Sbitset__new_on_obstack): Use Sbitset instead
+ of char*.
+ (Sbitset__isEmpty): Use Sbitset instead of char*.
+ * src/Sbitset.h (Sbitset): Make it a pointer to unsigned char
+ instead of char. This helps to avoid casting errors.
+ (Sbitset__or): Use Sbitset instead of char*.
+
+2009-10-16 Joel E. Denny <jdenny@clemson.edu>
+
+ portability: don't assume 8-bit bytes.
+ That is, use CHAR_BIT and UCHAR_MAX instead of 8 and 0xff.
+ * src/Sbitset.h (Sbitset__nbytes): Here.
+ (Sbitset__byteAddress): Here.
+ (Sbitset__bit_mask): Here.
+ (Sbitset__last_byte_mask): Here.
+ (Sbitset__ones): Here.
+ (SBITSET__FOR_EACH): Here.
+
+2009-10-11 Joel E. Denny <jdenny@clemson.edu>
+
+ portability: use va_start and va_end in the same function.
+ * src/complain.c (error_message): Move va_end from here...
+ (ERROR_MESSAGE): ... to here.
+
+2009-10-08 Joel E. Denny <jdenny@clemson.edu>
+
+ * data/bison.m4: Update comments for rename to muscle-tab.h.
+
+2009-10-07 Joel E. Denny <jdenny@clemson.edu>
+
+ Minor code cleanup.
+ * src/muscle-tab.c (MUSCLE_USER_NAME_CONVERT): Remove macro and
+ replace all uses with UNIQSTR_CONCAT.
+ * src/uniqstr.c (uniqstr_vsprintf): New function.
+ * src/uniqstr.h (uniqstr_vsprintf): Add prototype.
+ (UNIQSTR_CONCAT, UNIQSTR_GEN_FORMAT, UNIQSTR_GEN_FORMAT_): New
+ macros.
+
+2009-10-06 Joel E. Denny <jdenny@clemson.edu>
+
+ * TODO (Complaint submessage indentation): New.
+
+2009-10-04 Joel E. Denny <jdenny@clemson.edu>
+
+ Minor code cleanup.
+ * src/parse-gram.y: Clean up sorting of declarations.
+ Use types to simplify %printer declarations where possible.
+ Provide %printer for BRACKETED_ID and symbol.prec.
+ * src/symtab.c: Whitespace change.
+
+2009-10-04 Joel E. Denny <jdenny@clemson.edu>
+
+ tests: skip tests of file names that platform does not support.
+ Reported by Michael Raskin at
+ <http://lists.gnu.org/archive/html/bug-bison/2009-09/msg00001.html>.
+ * THANKS (Michael Raskin): Add.
+ * tests/output.at (AT_CHECK_OUTPUT_FILE_NAME): Fix. Cygwin used
+ to fail at least for file names containing ":" or "\".
+
+2009-09-23 Joel E. Denny <jdenny@clemson.edu>
+
+ yysyntax_error: avoid duplicate lookahead collection.
+ Except when memory reallocation is required, this change
+ eliminates the need to invoke yysyntax_error twice and thus to
+ repeat the collection of lookaheads. It also prepares for
+ future extensions that will make those repetitions more
+ expensive and that will require additional memory management in
+ yysyntax_error. Finally, it fixes an obscure bug already
+ exercised in the test suite.
+ * data/yacc.c (yysyntax_error): Add arguments for message
+ buffer variables stored in the parser. Instead of size, return
+ status similar to yyparse status but indicating success of
+ message creation. Other than the actual reallocation of the
+ message buffer, import and clean up memory management code
+ from...
+ (yyparse, yypush_parse): ... here.
+ * tests/regression.at (parse.error=verbose overflow): No longer
+ an expected failure.
+
+2009-09-23 Joel E. Denny <jdenny@clemson.edu>
+
+ yysyntax_error: test memory management more.
+ * tests/atlocal.in (NO_WERROR_CFLAGS): New cpp macro.
+ * tests/regression.at (parse.error=verbose and
+ YYSTACK_USE_ALLOCA): New test group.
+ (parse.error=verbose overflow): New test group that reveals an
+ obscure bug. Expected fail for now.
+
+2009-10-04 Joel E. Denny <jdenny@clemson.edu>
+
+ benchmarks: use %debug consistently among grammars.
+ * etc/bench.pl.in (generate_grammar_triangular): Do not activate
+ %debug by default. It can affect the timings even if yydebug=0.
+ (generate_grammar_calc): For consistency with other grammars,
+ use YYDEBUG environment variable to set yydebug.
+
+2009-10-03 Joel E. Denny <jdenny@clemson.edu>
+
+ Remove dead code.
+ * src/symtab.c (symbol_pack): Here because every symbol's number
+ is always defined by this time.
+
+2009-10-03 Alex Rozenman <rozenman@gmail.com>
+
+ Add additional space after periods in NEWS.
+ * NEWS (2.5): here.
+
+2009-09-29 Joel E. Denny <jdenny@clemson.edu>
+
+ Use the correct conversion specifier for size_t.
+ Reported by Jim Meyering.
+ * src/Sbitset.h (SBITSET__INDEX__CONVERSION_SPEC): New, "zu"
+ because Sbitset__Index is size_t.
+ * src/Sbitset.c (Sbitset__fprint): Use it instead of %d.
+
+2009-09-27 Joel E. Denny <jdenny@clemson.edu>
+
+ tests: don't abuse AT_BISON_CHECK.
+ * tests/regression.at (parse-gram.y: LALR = IELR): Move
+ additional shell commands outside of AT_BISON_CHECK.
+
+2009-09-26 Joel E. Denny <jdenny@clemson.edu>
+
+ tests: check that parse-gram.y's IELR and LALR are identical.
+ * tests/atlocal.in (abs_top_srcdir): New shell variable.
+ * tests/regression.at (parse-gram.y: LALR = IELR): New test
+ group.
+
+2009-09-19 Alex Rozenman <rozenman@gmail.com>
+
+ Keep sub-messages aligned. Fix strings for translation.
+ * src/location.h (location_print): Add return value.
+ * src/location.c (location_print): Return number of printed
+ characters.
+ * src/complain.h (complain_at_indent, warn_at_indent): Prototype
+ new functions.
+ * src/complain.cpp (indent_ptr): New static variable.
+ (error_message, complain_at_indent, warn_at_indent): Implement
+ the alignment mechanism.
+ * src/scan-code.l (parse_ref, show_sub_messages): Fix strings
+ for translations. Use new alignment mechanism.
+ * tests/named-ref.at: Adjust test-cases.
+ * NEWS (2.5): Add an announcement about named references.
+
+2009-09-17 Akim Demaille <demaille@gostai.com>
+
+ doc: fixes.
+ * doc/bison.texinfo: here.
+ Reported by Alex Rozenman.
+
+2009-09-16 Akim Demaille <demaille@gostai.com>
+
+ doc: lalr1.cc and variants.
+ * doc/bison.texinfo (Decl Summary): Document the "lex_symbol" and
+ "variant" %define variables.
+ (C++ Semantic Values): Split into...
+ (C++ Unions, C++ Variants): these.
+ The latter is new.
+ (C++ Parser Interface): Fix type names.
+ Document parser::syntax_error.
+ Document the fact that locations are not mandatory.
+ (C++ Scanner Interface): Split into...
+ (Split Symbols, Complete Symbols): these.
+ The later is new.
+ (Calc++ Parsing Driver): Use variants.
+ Add more comments.
+ Adjust style.
+ (Calc++ Parser): Declare all the tokens, no
+ longer accept raw characters.
+ Remove %union.
+ Adjust types and printers.
+ Remove destructors.
+ (Calc++ Scanner): Use make_<SYMBOL> functions.
+ Use strerror in error message.
+
+2009-09-16 Akim Demaille <demaille@gostai.com>
+
+ doc: spell checking.
+ * doc/bison.texinfo: here.
+
+2009-09-16 Akim Demaille <demaille@gostai.com>
+
+ doc: comment changes.
+ * doc/bison.texinfo: Comment changes.
+
+2009-09-16 Akim Demaille <demaille@gostai.com>
+
+ lalr1.cc: factor the yytranslate_ invocation in make_SYMBOLS.
+ * data/c++.m4, data/lalr1.cc (parser::symbol_type): Change the
+ constructor to take a token_type instead of the (internal) symbol
+ number.
+ Call yytranslate_.
+ * data/variant.hh (b4_symbol_constructor_define_): Therefore,
+ don't call yytranslate_ here.
+
+2009-09-16 Akim Demaille <demaille@gostai.com>
+
+ TODO: statistics.
+ * TODO (Figures): New.
+
+2009-09-13 Joel E. Denny <jdenny@clemson.edu>
+
+ tests: clean up push.at test group titles.
+ * tests/push.at: Remove "Push Parsing: " from test group titles
+ because these are already under the banner "Push Parsing Tests".
+
+2009-09-12 Alex Rozenman <rozenman@gmail.com>
+
+ Provide an additional sub-message for clarity.
+ Add "symbol not found in production" error message when
+ an "invalid reference" is detected in named references
+ resolution.
+ * src/scan-code.l: Update "invalid reference" case.
+ * tests/named-ref.at: Adjust test-cases.
+
+2009-09-10 Joel E. Denny <jdenny@clemson.edu>
+
+ Clean up yacc.c a little.
+ * data/yacc.c: Clean up M4 for readability, and make output
+ whitespace more consistent. For the main parse function
+ comment, instead of saying "yyparse or yypush_parse", say either
+ "yyparse" or "yypush_parse" depending on which it actually is.
+
+2009-09-10 Joel E. Denny <jdenny@clemson.edu>
+
+ Fix --enable-gcc-warnings.
+ * src/parse-gram.y (%printer <param>): Handle param_none.
+
+2009-09-09 Akim Demaille <demaille@gostai.com>
+
+ lalr1.cc: syntax_error as exceptions.
+ It is common to use sort of factories in the user actions. These
+ factories may check some "syntactic" constraints that are not
+ enforced by the grammar itself. This is possible using YYERROR
+ within the action itself. Provide the user with a means to throw
+ a syntax_error exception.
+
+ * data/c++.m4 (b4_public_types_declare, b4_public_types_define):
+ Declare and define yy::parser::syntax_error.
+ * data/lalr1.cc: Include stdexcept.
+ (yy::parser::parse): Wrap the user action within a try/catch.
+ * data/glr.cc: Include stdexcept.
+
+2009-09-09 Akim Demaille <demaille@gostai.com>
+
+ lalr1.cc: add missing "inline".
+ * data/c++.m4 (b4_public_types_define): Add missing inline to
+ implementations provided in headers.
+
+2009-09-09 Akim Demaille <demaille@gostai.com>
+
+ %param: documentation.
+ * NEWS (2.6): Document %param, %lex-param, and %parse-param
+ changes.
+ * doc/bison.texinfo: Document that %lex-param and %parse-param
+ are n-ary.
+ Changes some examples to demonstrate it.
+ (Calc++ Parser): Use %param.
+
+2009-09-09 Akim Demaille <demaille@gostai.com>
+
+ Regen.
+
+2009-09-09 Akim Demaille <demaille@gostai.com>
+
+ style changes.
+ * src/parse-gram.y (add_param): Scope changes.
+
+2009-09-09 Akim Demaille <demaille@gostai.com>
+
+ %parse: support several arguments.
+ * src/parse-gram.y (current_param): New.
+ (param_type): Add param_none.
+ (params): New nonterminal.
+ Use it.
+
+2009-09-09 Akim Demaille <demaille@gostai.com>
+
+ Regen.
+
+2009-09-09 Akim Demaille <demaille@gostai.com>
+
+ %param.
+ Provide a means to factor lex-param and parse-param common
+ declarations.
+
+ * src/parse-gram.y (param_type): New.
+ Define a %printer for it.
+ (add_param): Use it.
+ (%parse-param, %lex-param): Merge into...
+ (%parse): this new token.
+ Adjust the grammar to use it.
+ * src/scan-gram.l (RETURN_VALUE): New.
+ (RETURN_PERCENT_FLAG): Use it.
+ (RETURN_PERCENT_PARAM): New.
+ Use it to support %parse-param, %lex-param and %param.
+
+2009-09-03 Joel E. Denny <jdenny@clemson.edu>
+
+ Use aver not assert.
+ * src/output.c: Don't include assert.h.
+ (output_skeleton): Use aver not assert.
+ * src/system.h (aver): In documentation of why, add links to
+ Paul Eggert's explanations in the mailing lists.
+
+2009-09-05 Alex Rozenman <rozenman@gmail.com>
+
+ Use "Unresolved reference" error message when no symbols were found
+ in a symbolic reference resolution. Remove .expr and -expr from
+ the shown reference when the reference is unresolved.
+ * src/scan-code.l: Change the error message, adjust location columns,
+ rename variable "exact_mode" to "explicit_bracketing".
+ * tests/named-ref.at: Adjust existing tests and add a new one.
+
+2009-09-04 Akim Demaille <demaille@gostai.com>
+
+ Adjust synclines in src/parse-gram.[ch].
+ * tests/bison.in: Do some magic (including working around issues
+ with ylwrap) when this wrapper is used to compile
+ src/parse-gram.y.
+
+2009-09-03 Joel E. Denny <jdenny@clemson.edu>
+
+ Complain about unused %define variables and %code qualifiers.
+ * NEWS (2.5): Document.
+ * data/bison.m4 (b4_check_user_names): Complain instead of warn.
+ * doc/bison.texinfo (Decl Summary): Document complaint, and
+ improve %define documentation a little otherwise.
+ * tests/input.at (Reject unused %code qualifiers): Update.
+ (%define errors): Update.
+ (%define, --define, --force-define): Update.
+ (%define backward compatibility): Update.
+ (Unused %define api.pure): Update.
+ * tests/push.at (Push Parsing: Unsupported Skeletons): Update.
+
+2009-09-03 Joel E. Denny <jdenny@clemson.edu>
+
+ Don't suppress warnings about unused parse.error.
+ * data/bison.m4 (b4_error_verbose_flag): Don't examine value of
+ %define variable parse.error unless b4_error_verbose_flag is
+ actually expanded in a skeleton.
+
+2009-09-03 Akim Demaille <demaille@gostai.com>
+
+ * NEWS (2.4.2): Add "Internationalization" item.
+
+2009-09-03 Akim Demaille <demaille@gostai.com>
+
+ bootstrap: fix/improve find_tool.
+ * bootstrap (find_tool): Improve error messages.
+ Fix typo about find_tool_names.
+
+2009-08-29 Joel E. Denny <jdenny@clemson.edu>
+
+ Fix gcc 3.4.4 shadowing warning reported by Eric Blake.
+ See
+ <http://lists.gnu.org/archive/html/bison-patches/2009-08/msg00093.html>.
+ * src/scan-code.h (code_props_rule_action_init): Rename
+ named_ref arg to name so it doesn't shadow named_ref type. This
+ makes it consistent with the function definition in scan-code.l
+ anyway.
+
+2009-08-28 Joel E. Denny <jdenny@clemson.edu>
+
+ %define: accept unquoted values.
+ * NEWS (2.5): Group all %define changes together, and document
+ this one. Remove quotes in IELR and canonical LR entry.
+ * doc/bison.texinfo: Remove quotes in most examples throughout.
+ (Decl Summary): Update %define documentation.
+ (Table of Symbols): Likewise.
+ * src/ielr.c (LrType): Update documentation.
+ * src/parse-gram.y (content.opt): Add production for ID.
+ * tests/actions.at: Remove quotes in most tests.
+ * tests/calc.at: Likewise.
+ * tests/existing.at: Likewise.
+ * tests/input.at: Likewise.
+ * tests/local.at: Likewise.
+ * tests/push.at: Likewise.
+ * tests/reduce.at: Likewise.
+ * tests/torture.at: Likewise.
+
+2009-08-28 Joel E. Denny <jdenny@clemson.edu>
+
+ %define lr.type: make values lowercase IDs.
+ That is, "LALR" => "lalr", "IELR" => "ielr", and
+ "canonical LR" => "canonical-lr".
+ * NEWS (2.5): Update documentation.
+ * doc/bison.texinfo (Decl Summary): Likewise.
+ * src/ielr.c (ielr): Use new values.
+ * src/ielr.h (ielr): Update documentation.
+ * src/reader.c (prepare_percent_define_front_end_variables): Use
+ and validate new values.
+ * tests/existing.at (AT_TEST_EXISTING_GRAMMAR): Update test
+ grammars.
+ * tests/reduce.at (AT_TEST_LR_TYPE): Likewise.
+
+2009-08-27 Eric Blake <ebb9@byu.net>
+
+ scan-gram: avoid portability trap with ctype usage.
+ * src/scan-gram.l (<SC_ESCAPED_STRING,SC_ESCAPED_CHARACTER>):
+ Avoid compiler warning.
+
+2009-08-27 Joel E. Denny <jdenny@clemson.edu>
+
+ tests: use perl for printing special sequences to files.
+ And skip tests if perl is not available. This is better than
+ playing tricks with shell portability. Suggested by Akim
+ Demaille.
+ * tests/input.at (Bad character literals): Use it here for
+ omitting final newlines.
+ (Bad escapes in literals): Use it here for special characters.
+
+2009-08-26 Joel E. Denny <jdenny@clemson.edu>
+
+ tests: show a use of %define lr.default-reductions "consistent"
+ * tests/conflicts.at (%nonassoc and eof): Extend to test that it
+ prevents the omission of expected tokens for %error-verbose.
+
+2009-08-26 Akim Demaille <demaille@gostai.com>
+
+ tests: portability fix.
+ * tests/input.at (Bad escapes in literals): Don't expect "echo
+ '\0'" to output \ then 0.
+
+2009-08-26 Joel E. Denny <jdenny@clemson.edu>
+
+ Actually handle the yytable zero value correctly this time.
+ * data/bison.m4 (b4_integral_parser_tables_map): Don't mention
+ zero values in the YYTABLE comments.
+ * data/glr.c (yytable_value_is_error): Don't check for zero
+ value.
+ * data/lalr1.cc (yy_table_value_is_error_): Likewise.
+ * data/yacc.c (yytable_value_is_error): Likewise.
+ * data/lalr1.java (yy_table_value_is_error_): Likewise.
+ (yysyntax_error): Fix typo in code: use yytable_ not yycheck_.
+ * src/tables.h: In header comments, explain why it's useless to
+ check for a zero value in yytable.
+
+2009-08-25 Joel E. Denny <jdenny@clemson.edu>
+
+ More fixes related to last two patches.
+ * data/bison.m4 (b4_integral_parser_tables_map): Fix YYTABLE
+ comments: zero indicates syntax error not default action.
+ * data/c.m4 (b4_table_value_equals): Comment that YYID must be
+ defined.
+ * data/glr.c (yyis_pact_ninf): Rename to...
+ (yypact_value_is_default): ... this.
+ (yyisDefaultedState): Update for rename.
+ (yyis_table_ninf): Rename to...
+ (yytable_value_is_error): ... this, and check for value zero
+ besides just YYTABLE_NINF.
+ (yygetLRActions): Check for default value from yypact. It
+ appears that this check is always performed before this function
+ is invoked, and so adding the check here is probably redundant.
+ However, the code may evolve after this subtlety is forgotten.
+ Also, update for rename to yytable_value_is_error. Because that
+ macro now checks for zero, a different but equivalent branch of
+ the if-then-else here is evaluated.
+ (yyreportSyntaxError): Update for rename to
+ yytable_value_is_error. The zero condition was mishandled
+ before.
+ (yyrecoverSyntaxError): Update for renames. No behavioral
+ changes.
+ * data/lalr1.cc, data/lalr1.java (yy_pact_value_is_default_):
+ New function.
+ (yy_table_value_is_error_): New function.
+ (parse): Use new functions where possible. No behavioral
+ changes.
+ (yysyntax_error_, yysyntax_error): Use yy_table_value_is_error_.
+ The zero condition was mishandled before.
+ * data/yacc.c (yyis_pact_ninf): Rename to...
+ (yypact_value_is_default): ... this.
+ (yyis_table_ninf): Rename to...
+ (yytable_value_is_error): ... this, and check for value zero
+ besides just YYTABLE_NINF.
+ (yysyntax_error): Update for rename to yytable_value_is_error.
+ The zero condition was mishandled before.
+ (yyparse): Update for renames. No behavioral changes.
+ * src/tables.h: Improve comments about yypact, yytable, etc.
+ more. Most importantly, say yytable value of zero means syntax
+ error not default action.
+
+2009-08-25 Joel E. Denny <jdenny@clemson.edu>
+
+ Fix %error-verbose for conflicts resolved by %nonassoc.
+ * NEWS (2.5): Document.
+ * data/glr.c (yyreportSyntaxError): Fix this by checking
+ yyis_table_ninf.
+ * data/yacc.c (yysyntax_error): Likewise.
+ * data/lalr1.cc (yysyntax_error_): Fix this by checking
+ yytable_ninf_.
+ * data/lalr1.java (yysyntax_error): Likewise.
+ * tests/conflicts.at (%nonassoc and eof): Update expected output
+ and remove FIXME.
+
+2009-08-25 Joel E. Denny <jdenny@clemson.edu>
+
+ Some code and documentation improvements.
+ * data/c.m4 (b4_table_value_equals): New macro to capture
+ some repeated code.
+ * data/glr.c (yyis_pact_ninf): Use it here.
+ (yyis_table_ninf): Likewise.
+ (yyreportSyntaxError): Improve internal comments.
+ * data/yacc.c (yyis_pact_ninf): New macro copied from glr.c.
+ Use it everywhere possible.
+ (yyis_table_ninf): Likewise.
+ (yysyntax_error): Improve internal comments.
+ * data/lalr1.cc (yysyntax_error_): Likewise.
+ * data/lalr1.java (yysyntax_error): Likewise.
+ * src/tables.h: Improve comments about yypact, yytable, etc.
+
+2009-08-21 Joel E. Denny <jdenny@clemson.edu>
+
+ Use locale when quoting.
+ * src/scan-gram.l (SC_ESCAPED_STRING, SC_ESCAPED_CHARACTER): Use
+ quote rather than implementing quoting here.
+
+2009-08-20 Eric Blake <ebb9@byu.net>
+
+ Make previous patch more robust.
+ * src/output.c (ARRAY_CARDINALITY): New macro, copied from
+ argmatch.h.
+ (output_skeleton): Use it.
+ Suggested by Akim Demaille.
+
+ Import latest m4/m4.m4.
+ * submodules/autoconf: Update to autoconf 2.64.
+ * configure.ac (M4_GNU_OPTION): New define.
+ * src/output.c (output_skeleton): Use it to resolve FIXME.
+ * NEWS: Mention this.
+
+2009-08-19 Joel E. Denny <jdenny@clemson.edu>
+
+ Fix complaints about escape sequences.
+ Discussed starting at
+ <http://lists.gnu.org/archive/html/bison-patches/2009-08/msg00036.html>.
+ * src/scan-gram.l (SC_ESCAPED_STRING, SC_ESCAPED_CHARACTER):
+ For a \0 and similar escape sequences meaning the null
+ character, report an invalid escape sequence instead of an
+ invalid null character because the latter does not actually
+ appear in the user's input.
+ In all escape sequence complaints, don't escape the initial
+ backslash, and don't quote when the sequence appears at the end
+ of the complaint line unless there's whitespace that quotearg
+ won't escape.
+ Consistently say "invalid" not "unrecognized".
+ Consistently prefer "empty character literal" over "extra
+ characters in character literal" warning for invalid escape
+ sequences; that is, consistently discard those sequences.
+ * tests/input.at (Bad escapes in literals): New.
+
+2009-08-19 Akim Demaille <demaille@gostai.com>
+
+ doc: fixes.
+ * doc/bison.texinfo: Fix minor Texinfo errors.
+
+2009-08-19 Akim Demaille <demaille@gostai.com>
+
+ tests: distcc compliance.
+ * tests/synclines.at (AT_SYNCLINES_COMPILE): Discard distcc's
+ error messages from the output.
+
+2009-08-19 Akim Demaille <demaille@gostai.com>
+
+ variables: simplify the upgrade of namespace into api.namespace.
+
+ This patch simplifies "variables: rename namespace as
+ api.namespace", commit 67501061076ba46355cfd9f9361c7eed861b389c.
+ Suggested by Joel E. Denny in
+ http://lists.gnu.org/archive/html/bison-patches/2009-07/msg00006.html
+
+ * src/muscle-tab.c (muscle_percent_variable_update): New.
+ (muscle_percent_define_insert): Use it in replacement of the
+ previous tr invocation.
+ Remove variable_tr, no longer needed.
+ * data/bison.m4 (b4_percent_define_copy_, b4_percent_define_copy):
+ Remove.
+ * data/c++.m4: No longer handle namespace -> api.namespace.
+ * tests/input.at (%define backward compatibility): Check that
+ namespace is treated as api.namespace.
+
+2009-08-19 Akim Demaille <demaille@gostai.com>
+
+ doc: %initial-action to initialize yylloc.
+ Reported by Bill Allombert.
+ * doc/bison.texinfo: Set fill-column to 76.
+ (Location Type): Document the use of %initial-action to initialize
+ yylloc.
+
+2009-08-19 Akim Demaille <demaille@gostai.com>
+
+ lalr1.cc: use state_type.
+ * data/lalr1.cc (yysyntax_error_): Use state_type.
+ Move argument names into yy*.
+
+2009-08-19 Akim Demaille <demaille@gostai.com>
+
+ lalr1.cc: get rid of yyparse's yystate.
+ yystate and yystack_[0].state are equal, keep only the latter.
+ The former was also used as a temporary variable to compute the
+ post-reduction state. Move this computation into an auxiliary
+ function.
+
+ * data/glr.c (yyLRgotoState): Fuse variable definition and first
+ assignment.
+ * data/lalr1.cc (yy_lr_goto_state_): New.
+ (yyparse): Use it.
+ Replace remaining uses of yystate by yystate_[0].state.
+ Remove the former.
+
+2009-08-19 Akim Demaille <demaille@gostai.com>
+
+ lalr1.cc: destroy $$ when YYERROR is called.
+ * data/lalr1.cc (yyreduce): Compute the resulting state before
+ running the user action so that yylhs is a valid symbol.
+ (yyerrorlab): Since yylhs is complete (it knows its type), we can
+ simply call yy_destroy_ to destroy $$ on YYERROR invocations.
+ * tests/c++.at (AT_CHECK_VARIANTS): Test YYERROR with variants.
+
+2009-08-18 Joel E. Denny <jdenny@clemson.edu>
+
+ maint: update for gnulib's recent update-copyright changes
+ * gnulib: Update.
+ * .x-update-copyright (COPYING): Add as it's no longer implied
+ when .x-update-copyright is present.
+ * cfg.mk (update-copyright-local): Remove, now ignored.
+ (update-copyright): Declare update-b4-copyright as a dependency.
+
+2009-08-17 Akim Demaille <demaille@gostai.com>
+
+ build: require gettext 0.17.
+
+ Suggested by Bruno Haible.
+ http://lists.gnu.org/archive/html/bug-bison/2009-08/msg00009.html
+ * configure.ac: require gettext 0.17 to ensure compatibility with
+ gnulib.
+
+2009-08-17 Akim Demaille <demaille@gostai.com>
+
+ build: lower gettext requirements.
+
+ Bison was uselessly requiring the formatstring macros from
+ gettext, which resulted in mo files not being installed on systems
+ that perfectly supported Bison mo files. Lower the requirement.
+ http://lists.gnu.org/archive/html/bug-bison/2009-08/msg00006.html
+
+ * configure.ac: Require need-ngettext instead of
+ need-formatstring-macros.
+ Reported by Martin Jabocs.
+ Suggested by Bruno Haible.
+ * INSTALL: Restructure.
+ (Internationalization): New.
+
+2009-08-14 Joel E. Denny <jdenny@clemson.edu>
+
+ maint: fix use of copyright year intervals.
+ * gnulib: Update.
+ * bootstrap.conf (gnulib_modules): Update getopt to getopt-gnu
+ as now recommended in gnulib/NEWS.
+ * build-aux/update-b4-copyright: Fix.
+ * cfg.mk (update-copyright-env): Configure update-copyright.
+
+2009-08-13 Joel E. Denny <jdenny@clemson.edu>
+
+ Make it easier to write deterministic tests.
+ Continues Akim's work from his 2009-06-10 commits.
+ * src/reader.c (check_and_convert_grammar): Don't add any
+ symbols after the first symbols_do invocation.
+ * src/symtab.c (symbols_sorted): New static global.
+ (user_token_number_redeclaration): Update comments.
+ (symbol_from_uniqstr): If a new symbol is being created, assert
+ that symbols_sorted hasn't been allocated yet.
+ (symbols_free): Free symbols_sorted.
+ (symbols_cmp, symbols_cmp_qsort): New functions.
+ (symbols_do): Sort symbol_table into symbols_sorted on first
+ invocation.
+ * tests/input.at (Numbered tokens): Recombine tests now that the
+ output should be deterministic across multiple numbers.
+
+2009-08-12 Akim Demaille <demaille@gostai.com>
+
+ tests: GCC 4.5 compliance.
+ * tests/synclines.at (AT_SYNCLINES_COMPILE): Adjust to GCC 4.5's
+ messages about #error.
+
+2009-08-12 Akim Demaille <demaille@gostai.com>
+
+ build: fix the generation of the documentation.
+ Some of our targets use "bison --help", but they can't depend on
+ "bison" itself (to avoid additional requirements on the user), so
+ they used to call "make src/bison" in the commands. Then
+ concurrent builds may fail: one make might be aiming one of its
+ jobs at compiling src/bison, and another job at generating the man
+ page. If the latter is faster than the former, then we have two
+ makes that concurrently try to compile src/bison.
+
+ This might also be a more convincing explanation for the failure
+ described in the patch "build: fix paths".
+
+ * Makefile.am (SUFFIXES): Initialize.
+ * build-aux/move-if-change: New, symlink to gnulib's.
+ * build-aux/local.mk: Ship it.
+ * doc/common.x: Remove, merged into...
+ * doc/bison.x: here.
+ * doc/local.mk (doc/bison.help): New.
+ ($(CROSS_OPTIONS_TEXI)): Depend on it.
+ Use src/bison.
+ (.x.1): Replace with...
+ (doc/bison.1): this explicit, simpler, target.
+ (common_dep): Remove, inlined where appropriate.
+ (SUFFIXES, PREPATH): Remove, unused.
+
+2009-08-12 Akim Demaille <demaille@gostai.com>
+
+ gnulib: improve prefixing.
+ * configure.ac (gl_PREFIXED_LIBOBJS): Don't rename it, rather,
+ change the value of...
+ (gl_LIBOBJS): this.
+ Adjust more variables.
+ * etc/prefix-gnulib-mk (prefix_assignment): Don't rename
+ gl_LIBOBJS.
+ (prefix): Also transform rules whose targets have slashes.
+ Use $prefix liberally.
+ Map @MKDIR_P@ to $(MKDIR_P).
+ Prefix directories that are mkdir'd.
+
+2009-08-12 Akim Demaille <demaille@gostai.com>
+
+ build: fix paths.
+ When using $(top_builddir) inconsistently, Make (including GNU
+ Make) is sometimes confused. As a result it may want to build
+ lib/libbison.la and $(top_builddir)/lib/libbison.la (the same
+ file, different names) concurrently, which, amusingly enough,
+ might end with:
+
+ ranlib lib/libbison.a
+ ranlib lib/libbison.a
+ make[2]: *** [lib/libbison.a] Segmentation fault
+
+ on OS X.
+
+ * doc/local.mk, src/local.mk: Do not use $(top_builddir) when not
+ needed.
+
+2009-08-12 Akim Demaille <demaille@gostai.com>
+
+ distcheck: fix.
+
+ * examples/calc++/Makefile.am: (EXTRA_DIST): Ship calc.stamp.
+
+2009-08-10 Joel E. Denny <jdenny@clemson.edu>
+
+ * tests/local.mk (TESTSUITE_AT): Add named-refs.at.
+
+2009-08-10 Joel E. Denny <jdenny@clemson.edu>
+
+ Miscellaneous code readability improvements.
+
+ * src/reader.c (reader): Move %define front-end variable
+ defaults and checking into...
+ (prepare_percent_define_front_end_variables): ... this new
+ function.
+
+ * src/scan-gram.l (INITIAL): For consistency with string
+ literals, don't store open quote on character literal. It's
+ discarded before returning anyway.
+ (SC_ESCAPED_CHARACTER): Similarly, don't store close quote.
+ Make length test more readable, and make the character stored
+ for an empty literal more obvious while consistent with the
+ previous behavior.
+
+ * src/symtab.c, src/symtab.h: Rename USER_NUMBER_ALIAS to
+ USER_NUMBER_HAS_STRING_ALIAS throughout.
+ * src/symtab.c (symbol_make_alias): Remove comment from symtab.c
+ that is repeated in symtab.h. Improve argument names to make it
+ clear which side of the symbol-string alias pair is which.
+ (symbol_check_alias_consistency): Improve local variable names
+ for the same purpose.
+ * src/symtab.h (struct symbol): Make comments about aliases
+ clearer.
+ (symbol_make_alias): Improve comments and argument name.
+ * src/output.c (token_definitions_output): Update for rename to
+ USER_NUMBER_HAS_STRING_ALIAS and improve comments about aliases.
+
+2009-08-08 Alex Rozenman <rozenman@gmail.com>
+
+ Convert "misleading reference" messages to warnings.
+ * src/scan-code.l: New function 'show_sub_messages', more
+ factoring.
+ * tests/named-ref.at: Adjust tests.
+
+2009-08-06 Joel E. Denny <jdenny@clemson.edu>
+
+ maint: run "make update-copyright"
+
+2009-08-06 Joel E. Denny <jdenny@clemson.edu>
+
+ maint: make update-b4-copyright easier to use
+ * build-aux/update-b4-copyright: In warnings, report line
+ numbers rather than character positions.
+ * cfg.mk (update-copyright-local): Set to update-b4-copyright so
+ that update-copyright runs it.
+ * gnulib: Update.
+
+2009-08-05 Joel E. Denny <jdenny@clemson.edu>
+
+ maint: clean up update-b4-copyright code
+ * build-aux/update-b4-copyright: Do not accept 2-digit
+ UPDATE_COPYRIGHT_YEAR, which was not handled correctly.
+ Don't accept a `[' in a b4_copyright argument.
+ Format code more consistently.
+ Don't assume b4*copyright never occurs.
+
+2009-08-04 Joel E. Denny <jdenny@clemson.edu>
+
+ maint: automate b4_copyright updates.
+ * Makefile.am (update-b4-copyright): New target rule.
+ * build-aux/local.mk (EXTRA_DIST): Add update-b4-copyright.
+ * build-aux/update-b4-copyright: New.
+ * data/yacc.c: Remove stray characters around b4_copyright
+ invocations.
+
+2009-08-04 Joel E. Denny <jdenny@clemson.edu>
+
+ maint: automate annual package-wide copyright-year update.
+ * .x-update-copyright: New.
+ * Makefile.am (EXTRA_DIST): Remove maint.mk.
+ * bootstrap.conf (gnulib_modules): Add maintainer-makefile and
+ update-copyright. Remove gnumakefile, which is implied by
+ maintainer-makefile.
+ * cfg.mk (bootstrap-tools): Copy from old maint.mk.
+ * gnulib: Update.
+ * maint.mk: Remove, now copied from gnulib.
+ * examples/extexi: Add missing "(C)" in copyright statement so
+ update-copyright can recognize it.
+ * src/LR0.h: Likewise.
+ * src/print.h: Likewise.
+ * src/print_graph.h: Likewise.
+ * src/gram.c: Add missing comma in copyright statement.
+ * src/gram.h: Likewise.
+
+2009-08-04 Joel E. Denny <jdenny@clemson.edu>
+
+ Fix "make distcheck".
+ * examples/calc++/Makefile.am: Say $(srcdir)/calc.stamp instead
+ of just calc.stamp.
+
+2009-08-01 Joel E. Denny <jdenny@clemson.edu>
+
+ Pacify "gcc -Wunused" for the input function from Flex.
+ Reported by Alex Rozenman. This warning shows up with gcc-4.3.0
+ and later.
+ * src/scan-code.l: Add "%option noinput", which I cannot find in
+ the Flex manual, but which Flex has supported since at least as
+ far back as 2.5.4. However, if any of our developers still use
+ Flex 2.5.4, they'll need to stop configuring with
+ --enable-gcc-warnings because "%option noinput" didn't work
+ correctly until Flex 2.5.6.
+ * src/scan-gram.l: Likewise.
+ * src/scan-skel.l: Likewise.
+
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