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path: root/gnuwin32/contrib/bison/2.4.1/bison-2.4.1-src/ChangeLog
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2008-12-11  Joel E. Denny  <jdenny@ces.clemson.edu>

	Version 2.4.1.
	* NEWS: Set version and date.
	* lib/Makefile.am: Update copyright year.
	* tests/atlocal.in: Update copyright year.

2008-12-11  Joel E. Denny  <jdenny@ces.clemson.edu>

	Semicolon feature removal is not about future language support.
	* NEWS: The semicolon feature is no longer active for newer languages,
	so don't claim that it causes trouble for them.

2008-12-11  Joel E. Denny  <jdenny@ces.clemson.edu>

	* gnulib: Update submodule to HEAD.

2008-12-09  Akim Demaille  <demaille@gostai.com>

	Update data/README.
	* data/README: Document glr.cc, lalr1.java, m4sugar and xslt.

2008-12-05  Eric Blake  <ebb9@byu.net>

	Build testsuite with newer autoconf.
	* tests/output.at (m4_expand): Don't override in newer autoconf,
	where the underlying implementation changed.
	* tests/cxx-type.at (_AT_RESOLVED_GLR_OUTPUT)
	(_AT_RESOLVED_GLR_OUTPUT_WITH_LOC, _AT_AMBIG_GLR_OUTPUT)
	(_AT_AMBIG_GLR_OUTPUT_WITH_LOC, _AT_GLR_STDERR)
	(_AT_VERBOSE_GLR_STDERR): Expand to double-quoted strings,
	since some of them contain unbalanced ')'.

2008-11-19  Joel E. Denny  <jdenny@ces.clemson.edu>

	* NEWS: Clarify a little.

2008-11-19  Joel E. Denny  <jdenny@ces.clemson.edu>

	* NEWS: Update for recent changes.

2008-11-18  Joel E. Denny  <jdenny@ces.clemson.edu>

	Fix unexpanded macros in GLR defines file.
	Reported by Csaba Raduly at
	<http://lists.gnu.org/archive/html/bug-bison/2008-11/msg00048.html>.
	* THANKS (Csaba Raduly): Add.
	* data/glr.c: Fix overquoting on b4_prefix for yylval and yylloc.
	* tests/calc.at (_AT_DATA_CALC_Y): If %defines is specified, generate
	lexer in a separate module that includes the defines file.
	(AT_CHECK_CALC): Use AT_FULL_COMPILE and request compilation of lexer
	source.
	* tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Push AT_DEFINES_IF.
	Adjust AT_LOC and AT_VAL to use AT_NAME_PREFIX.
	(AT_BISON_OPTION_POPDEFS): Pop AT_DEFINES_IF.
	(AT_DATA_SOURCE_PROLOGUE): New.
	(AT_DATA_GRAMMAR_PROLOGUE): Use AT_DATA_SOURCE_PROLOGUE.
	(AT_DATA_SOURCE): New.
	(AT_FULL_COMPILE): New, copied from master branch and extended to
	support an additional source file.

2008-11-17  Joel E. Denny  <jdenny@ces.clemson.edu>

	Don't let maintainer-*-check targets force a version update.
	* cfg.mk (_is-dist-target): Implement.  maintainer-check* was already
	handled.

2008-11-17  Di-an Jan  <dianj@freeshell.org>

	* doc/bison.texinfo: Synchronize ``Detail Node Listing''.
	Align menus.  Adjust word wrapping.  Use node names for menu names.
	(Examples): Don't abbreviate node names.
	(LocalWords): Remove abbreviations.
	(Copying): Make description a sentence.
	(Java Action Features): Remove period to match the rest of menu.

2008-11-11  Paolo Bonzini  <bonzini@gnu.org>

	* bootstrap.conf: Replace m4/warning.m4 with warnings module.
	* configure.ac: Adjust usage.
	* lib/Makefile.am: Replace $(WARNING_CFLAGS) with $(WARN_CFLAGS).
	* src/Makefile.am: Replace $(WARNING_CFLAGS) with $(WARN_CFLAGS).
	* tests/atlocal.in: Replace $(WARNING_*FLAGS) with $(WARN_*FLAGS).

2008-11-07  Joel E. Denny  <jdenny@ces.clemson.edu>

	Don't add a semicolon to actions for %skeleton or %language.
	It breaks Java test cases as reported by Akim Demaille.
	* src/scan-code.l: Implement.

2008-11-07  Joel E. Denny  <jdenny@ces.clemson.edu>

	Clean up %skeleton and %language priority implementation.
	* src/getargs.c (skeleton_prio): Use default_prio rather than 2, and
	remove static qualifier because others will soon need to see it.
	(language_prio): Likewise.
	(getargs): Use command_line_prio rather than 0.
	* src/getargs.h (command_line_prio, grammar_prio, default_prio): New
	enum fields.
	(skeleton_prio): Extern it.
	(language_prio): Extern it.
	* src/parse-gram.y: Use grammar_prio rather than 1.

2008-11-04  Akim Demaille  <demaille@gostai.com>

	* NEWS: Mention the trailing semicolon in action.

2008-11-04  Akim Demaille  <demaille@gostai.com>

	Reformat NEWS.
	* NEWS: Use more outline-mode markup.
	Suggested by Jim Meyering.

2008-11-04  Joel E. Denny  <jdenny@ces.clemson.edu>

	Fix user actions without a trailing semicolon.
	Reported by Sergei Steshenko at
	<http://lists.gnu.org/archive/html/bug-bison/2008-11/msg00001.html>.
	* THANKS (Sergei Steshenko): Add.
	* src/scan-code.l (SC_RULE_ACTION): Fix it.
	* tests/regression.at (Fix user actions without a trailing semicolon):
	New test case.

2008-11-02  Joel E. Denny  <jdenny@ces.clemson.edu>

	Initiate further development.
	* NEWS: Create an empty section for new entries.
	* gnulib: Update submodule to HEAD.

2008-11-02  Joel E. Denny  <jdenny@ces.clemson.edu>

	* NEWS: Version 2.4.

2008-11-02  Joel E. Denny  <jdenny@ces.clemson.edu>

	Prepare for next release.
	* NEWS: Briefly mention changes since 2.3b.
	* README: Say GNU m4 1.4.6, which we've been requiring in release
	announcements already, not 1.4.3, which breaks the build.

2008-11-02  Joel E. Denny  <jdenny@ces.clemson.edu>

	Say %language is experimental.
	We're thinking of extending it's effect on output file naming.  See the
	thread at
	<http://lists.gnu.org/archive/html/bison-patches/2008-10/msg00003.html>.
	* NEWS: Say it's experimental.
	* doc/bison.texinfo (Decl Summary): Say it's experimental, and so don't
	recommend it over %skeleton for now.
	(Bison Options): Likewise.
	(C++ Bison Interface): Use %skeleton not %language.
	(Calc++ Parser): Use %skeleton not %language.
	* src/getargs.c (usage): Say it's experimental.

2008-11-01  Di-an Jan  <dianj@freeshell.org>
	    Paolo Bonzini  <bonzini@gnu.org>

	Support all Java parser class modifiers.
	* data/java.m4 (b4_percent_define_get3): New.
	(b4_final_if, b4_strictfp_if): New.
	* data/lalr1.java (final, strictfp, extends, implements): Support.
	* doc/bison.texinfo (final, strictfp, extends, implements): Add
	documentation.
	* tests/java.at (AT_CHECK_JAVA_MINIMAL): New.
	(AT_CHECK_JAVA_MINIMAL_W_LEXER): New.
	(AT_CHECK_JAVA_GREP): New.
	(Java parser class modifiers): New test.
	(Java parser class extends and implements): New test.

	Model exception propagation better with throws and lex_throws.
	* data/java.m4 (b4_list2): New.
	(throws): Change default.
	* data/lalr1.java (yyaction): Add throws.
	(parse): Add lex_throws in addition to throws.
	* doc/bison.texinfo (throws, lex_throws): Add documentation.
	* tests/java.at (Java throws specifications): New test.

	Improve documentation for Java parsers.
	* doc/bison.texinfo (Java Parsers): Add subsections.
	Don't quote first argument of %define.
	(Java Bison Interface): Document output files.  Move documentation
	of parser class and merge into Java Parser Interface.  Document
	features that error out.  Document directives with no effect.
	Move note about Javadoc higher.
	(Java Semantic Values): Explicitly mention stype.
	Document that generic types cannot be used.
	(Java Location Values): Use @deftypeivar.  Document constructors.
	Correct return value for toString.
	(Java Parser Interface): List undocumented constants/fields.
	Move documentation of fields added by %parse-param closer to list
	of members.  Document that token names are added as fields.
	Document constructors accurately.  Remove error method.
	(Java Scanner Interface): Move note on %pure-parser to Java Bison
	Interface.  Describe %code lexer and yylex accutately.
	Remove documentation that does not match the code.
	(Java Action Features): New.
	(Java Differences): Add reference.  Add item on semantic values.
	Add note about @{ ... @}.  Clarify %% epilogue placement.
	(Java Declarations Summary): New.

	Fix Java skeleton.
	* data/java.m4 (b4_prefix): Correct quoting for m4_define_default.
	(b4_remove_comma): Quote test argument.
	(b4_identification): Remove "bison" field.
	* tests/java.at (Java parser class and package names): New test.
	(Java %parse-param and %lex-param): New test.
	(Java stype, position_class and location_class): New test.

2008-10-31  Di-an Jan  <dianj@freeshell.org>

	* data/lalr1.jave: Update copyright years.
	(YYParser): Correct name of "generated from" file in Javadoc:
	use b4_file_name instead of @ofile@.
	(Location constructor): Correct Javadoc parameter name.
	(yylloc): Add missing opening m4 quote after b4_location_if.
	This removes a stray [ in the Javadoc of Lexer.getStartPos.
	(Lexer.yyerror): Fix incorrect m4 and Javadoc.
	(YYParser constructor): Correct Javadoc parameter name.

2008-10-30  Joel E. Denny  <jdenny@ces.clemson.edu>

	Always put auxiliary code files in the same dir as other output files.
	* src/files.c (compute_file_name_parts): When the user specifies
	--output but not --file-prefix, extract the directory prefix from the
	file prefix not from the grammar file name.  This affects the location
	of files like location.hh generated by the C++ skeleton.  The includes
	in the other output files require this fix.
	* tests/output.at (AT_CHECK_OUTPUT): Automatically create directories
	for expected output files.
	(Output files): Add a test for the above.

2008-10-29  Joel E. Denny  <jdenny@ces.clemson.edu>

	* gnulib: Update submodule to HEAD.

2008-10-28  Joel E. Denny  <jdenny@ces.clemson.edu>

	Update copyright year.
	* src/files.c: Here.

2008-10-28  Di-an Jan  <dianj@freeshell.org>  (tiny change)

	Don't overwrite the input file.
	* src/files.c (output_file_name_check): Fatal error if using input file
	for output.
	* tests/output.at: (AT_CHECK_CONFLICTING_OUTPUT): Add return status
	argument.
	(Conflicting output files): Add test.

2008-10-28  Akim Demaille  <demaille@gostai.com>

	Space changes.
	* data/lalr1.cc: Formatting changes.

2008-10-28  Akim Demaille  <demaille@gostai.com>

	Don't define debugging functions when !YYDEBUG.
	* data/lalr1.cc (debug_stream, set_debug_stream)
	(debug_level_type, debug_level, set_debug_level): Don't
	declare them when YYDEBUG is not defined.
	The implementation are already YYDEBUG-aware.

2008-10-28  Akim Demaille  <demaille@gostai.com>

	Prefer "continue" for empty loop bodies.
	* etc/bench.pl.in: Use "continue" instead of {}.

2008-10-28  Akim Demaille  <demaille@gostai.com>

	Space and comments changes.
	* data/c++.m4, data/glr.c, data/lalr1.cc: Copyright year changes.
	* data/c.m4, data/lalr1.cc: Space changes.

2008-10-28  Akim Demaille  <demaille@gostai.com>

	Make gnulib a submodule.
	* gnulib: New.
	* .gitmodules (gnulib): New.

2008-10-18  Joel E. Denny  <jdenny@ces.clemson.edu>

	Fix yyerror_range for user-defined location type in C++.  Reported by
	Georg Sauthoff at
	<http://lists.gnu.org/archive/html/bug-bison/2008-08/msg00008.html>.
	* data/lalr1.cc (parse): Change type of yyerror_range to location_type.
	* THANKS (Georg Sauthoff): Add.

2008-10-18  Joel E. Denny  <jdenny@ces.clemson.edu>

	Update several administrative files mainly to facilitate releasing.
	* HACKING (Administrivia): Make the git-merge-changelog notes more
	helpful.
	(Test suite): Don't say lalr1.cc is not exercised in the test suite.
	(Release Procedure): Update for git and add numerous details that were
	previously missing.
	* Makefile.am (EXTRA_DIST): Remove Makefile.cfg and Makefile.maint.
	* maint.mk (announcement): Don't list bison as a bootstrap tool so
	that announcements don't claim we bootstrapped with whatever bison
	happened to be in PATH.  Add flex as a bootstrap tool.
	* Makefile.maint: Remove, previously replaced by maint.mk.
	* Makefile.cfg: Remove, and migrate settings to...
	* cfg.mk: ... here for the sake of `make announcement'.
	* bootstrap.conf (gnulib_modules): Add announce-gen.
	* README: Say GNU Bison instead of just Bison.  Suggested by Karl
	Berry.

2008-10-08  Di-an Jan  <dianj@freeshell.org>  (tiny change)

	Small but important bugfixes for the Java skeleton.
	* data/lalr1.java (yyerror): Change Location to b4_location_type.
	(yy_symbol_print): Call toString on yyvaluep.

2008-08-29  Akim Demaille  <demaille@gostai.com>

	Clarify UPDATED use.
	* doc/bison.texinfo: It refers to the last edition of this file,
	not to the release date of Bison.
	Reported by Joel E. Denny.

2008-08-29  Akim Demaille  <demaille@gostai.com>

	* README: Update FAQ pointer.
	Reported by Joel E. Denny.

2008-08-27  Eric Blake  <ebb9@byu.net>

	Resync m4sugar from autoconf.
	* data/m4sugar/m4sugar.m4 (m4_defn, m4_popdef, m4_undefine)
	(m4_init): Adjust to latest m4.git changes.
	(m4_mapall_sep, _m4_list_cmp, m4_version_compare): Reduce side
	effects.
	* data/m4sugar/foreach.m4 (_m4_shiftn): Fix off-by-one bug.
	(_m4_list_cmp): Reduce side effects.

2008-08-27  Akim Demaille  <demaille@gostai.com>

	Check yyerrok in calc.at.
	* tests/calc.at (calc.y): Use yyerrok on "( error )".
	(AT_CHECK_CALC): Add a check that ensures that yyerrok works as
	expected.

2008-08-27  Akim Demaille  <demaille@gostai.com>

	Support yyerrok in lalr1.cc.
	YYBACKUP is still to import back into lalr1.cc.
	* data/lalr1.cc (yyerrork, yyclearin, YYRECOVERING): Define.

2008-08-26  Joel E. Denny  <jdenny@ces.clemson.edu>

	For maintainer-check*, don't recompile for a $(VERSION) update.
	* cfg.mk: New file.
	(_is-dist-target): Override the one in GNUmakefile.
	* Makefile.am (EXTRA_DIST): Add cfg.mk.

2008-08-26  Joel E. Denny  <jdenny@ces.clemson.edu>

	Update for recent change to gnulib.
	* src/parse-gram.y: Don't include strverscmp.h.  It comes from
	string.h now.

2008-08-15  Eric Blake  <ebb9@byu.net>

	Remaining m4sugar merge from autoconf.
	* data/m4sugar/m4sugar.m4: Copy entire file from autoconf.
	* data/m4sugar/foreach.m4: New file, copied from autoconf.
	* data/Makefile.am (dist_m4sugar_DATA): Distribute it.
	* src/output.c (output_skeleton): Tell m4 how to find it.

	Partial m4sugar merge from autoconf: m4_map.
	* data/m4sugar/m4sugar.m4 (m4_fst): Delete.
	(m4_map, m4_map_sep, _m4_map): Rewrite more efficiently.
	(m4_apply, _m4_apply, m4_mapall, m4_mapall_sep): New macros.
	* data/java.m4 (b4_token_enums): Use more efficient short-circuit
	for empty list.
	* data/c.m4 (b4_token_defines, b4_token_enums, b4_c_ansi_formals):
	Likewise.
	(b4_parse_param_for): Avoid m4_fst, now that autoconf no longer
	declares it.

2008-08-07  Joel E. Denny  <jdenny@ces.clemson.edu>

	Keep .version and PACKAGE_VERSION in sync.
	* Makefile.am ($(top_srcdir)/.version): Declare configure as a
	dependency, and add comments justifying this in more detail.  Discussed
	starting at
	<http://lists.gnu.org/archive/html/bison-patches/2008-07/msg00022.html>.

2008-08-06  Eric Blake  <ebb9@byu.net>

	Partial m4sugar merge from autoconf: m4_shiftn.
	* data/m4sugar/m4sugar.m4 (m4_shiftn): Faster implementation.
	(m4_shift2, m4_shift3): New macros.
	(m4_case, m4_bmatch, m4_bpatsubsts, m4_join): Adjust clients.
	* data/c.m4 (b4_c_function_def, b4_c_ansi_function_def)
	(b4_c_ansi_function_decl, b4_c_function_call): Likewise.
	* data/java.m4 (b4_remove_comma): Likewise.

	Partial m4sugar merge from autoconf: m4_wrap vs. m4 1.6.
	* data/m4sugar/m4sugar.m4 (m4_unquote, m4_wrap_lifo): New macros.
	(m4_wrap): Guarantee FIFO order, in spite of m4 1.6.
	(m4_init): Consolidate wrapped text into single m4_wrap.
	* data/bison.m4 (b4_check_user_names_wrap): Stick with LIFO order
	in wrapped text.

2008-08-05  Eric Blake  <ebb9@byu.net>

	Partial m4sugar merge from autoconf: builtins, version.m4.
	* data/m4sugar/m4sugar.m4 (changeword): Nuke.
	(m4_prepend): Remove, as it is unused and inherently quadratic,
	whereas m4_append is linear in newer m4.
	(m4_mkstemp): New builtin.
	(m4_symbols): Make rename conditional.
	(m4_version_prereq): Ensure fatal error if used in bison, which
	intentionally lacks version.m4.

	Fix comments in m4sugar.
	* data/m4sugar/m4sugar.m4: Comment changes, borrowed from autoconf.

2008-08-02  Joel E. Denny  <jdenny@ces.clemson.edu>

	Update for recent .gitignore fix in Gnulib.
	* bootstrap: Back out 2008-07-18 hack now that gnulib-tool creates
	anchored .gitignore entries.

2008-08-02  Joel E. Denny  <jdenny@ces.clemson.edu>

	Set gnu or gnits strictness.
	* configure.ac (AM_INIT_AUTOMAKE): Set gnu strictness during
	development and gnits strictness for releases.  Based on Eric Blake's
	suggestion at
	<http://lists.gnu.org/archive/html/bug-bison/2008-07/msg00019.html>.

2008-07-31  Paolo Bonzini  <bonzini@gnu.org>

	* NEWS: Clarify documentation of %language.

2008-07-31  Paolo Bonzini  <bonzini@gnu.org>

	Support usage of git-merge-changelog.
	* .gitattributes: New.
	* HACKING: Document usage of git-merge-changelog.
	* bootstrap: Install git-merge-changelog entries in .git/config
	if appropriate.

2008-07-27  Joel E. Denny  <jdenny@ces.clemson.edu>

	Remove remaining dependence on CVS Id keyword.
	* ChangeLog: For the sake of people still using CVS, don't use dollars
	when mentioning Id.
	* data/xslt/bison.xsl: Remove Id from header comments, where it was
	unusual anyway.
	* data/xslt/xml2dot.xsl: Likewise.
	* data/xslt/xml2text.xsl: Likewise.
	* data/xslt/xml2xhtml.xsl: Likewise.
	* doc/Doxyfile.in (PROJECT_NUMBER): Don't use ID.
	* doc/Makefile.am (neutralize): Remove, no longer needed.
	(.x.1): Don't use neutralize.
	(edit): Don't substitute for ID.
	(Doxyfile): Don't define Id, and thus don't depend on ChangeLog.

2008-07-27  Joel E. Denny  <jdenny@ces.clemson.edu>

	Fix dependence on computed configure variables.
	* doc/Makefile.am (common_dep): Depend on $(top_srcdir)/configure not
	$(top_srcdir)/configure.ac so that changes to computed variables, such
	as PACKAGE_VERSION, are seen.
	* tests/Makefile.am ($(srcdir)/package.m4): Likewise.

2008-07-20  Joel E. Denny  <jdenny@ces.clemson.edu>

	Update copyright dates for recent changes.
	* Makefile.am: Here.
	* src/Makefile.am: Here.
	* src/reduce.c: Here.
	* tests/reduce.at: Here.

2008-07-18  Joel E. Denny  <jdenny@ces.clemson.edu>

	Use git-version-gen for version names between releases.
	* .cvsignore (.tarball-version, GNUmakefile, *~): Add.
	* .gitignore (/.tarball-version, /GNUmakefile, /*~): Add.
	* .prev-version: New.
	* .version.in: Remove.
	* ChangeLog: Remove the Id previously used for capturing the CVS
	revision.
	* GNUmakefile: Remove, now copied from Gnulib.
	* Makefile.am: Add code suggested by comments in
	build-aux/git-version-gen.
	(EXTRA_DIST): Remove GNUmakefile, handled by Gnulib.  Add maint.mk,
	.prev-version, and .version.
	* NEWS (2.3b+): Rename to...
	(?.?): ... this because we're dropping the "+" version naming scheme,
	but, in general, we still can't be sure of our next release name.
	* bootstrap: Add a quick hack to remove from .gitignore the
	GNUmakefile entry that gnulib adds.  We already have a /GNUmakefile
	entry.  This should really be fixed in gnulib instead.
	* bootstrap.conf (gnulib_modules): Add gnumakefile.
	* configure.ac (AC_INIT): Set version name by invoking
	build-aux/git-version-gen.
	(AC_CONFIG_FILES): Remove .version, now generated by
	build-aux/git-version-gen.
	* maint.mk: New, copied from coreutils.
	* doc/.cvsignore (bison.1): Add.
	* doc/.gitignore (/bison.1): Add.
	* doc/bison.1: Remove, generated.
	* src/.cvsignore (revision.c): Remove.
	* src/.gitignore (/revision.c): Remove.
	* src/Makefile.am (bison_SOURCES): Remove revision.c and revision.h.
	(BUILT_SOURCES): Remove revision.c.
	(revision.c): Remove.
	* src/getargs.c (version): Don't print revision after the VERSION.
	* src/revision.h: Remove.

2008-07-16  Joel E. Denny  <jdenny@ces.clemson.edu>

	Fix untranslatable composition of sentences.  Reported by Goran
	Uddeborg at
	<http://lists.gnu.org/archive/html/bug-bison/2008-06/msg00000.html>.
	* THANKS (Goran Uddeborg): Add.
	* src/reduce.c (reduce_print): Report the number of nonterminals and
	rules useless in the grammar in separate sentences.
	* tests/reduce.at (Useless Rules): Update output.
	(Reduced Automaton): Likewise.
	(Underivable Rules): Likewise.
	(Empty Language): Likewise.

2008-07-15  Joel E. Denny  <jdenny@ces.clemson.edu>

	Fix some .gitignore and .cvsignore problems.
	* bootstrap (insert_sorted_if_absent): Replace all uses with...
	(insert_vc_ignore): ... this new function, which prepends `/' to all
	.gitignore entries before passing them to insert_sorted_if_absent.
	* bootstrap.conf (vc_ignore): Set to '.cvsignore .gitignore' so that
	.cvsignore files are maintained even though Bison developers run
	bootstrap while using Git.
	* .cvsignore (*.patch *.log log patches applied): Remove, apparently
	unneeded by Bison.
	(gnulib): Add.
	* .gitignore (/*.patch *.log log patches applied): Remove, broken and
	unneeded.  Reported by Eric Blake.
	* lib/.gitignore (/*~): Add.
	* po/.cvsignore, runtime-po/.cvsignore: Sync with .gitignore.
	* examples/calc++/.gitignore (/calc++.exe): Add.  Reported by Eric
	Blake.
	* src/.gitignore (/bison.exe): Add.  Reported by Eric Blake.

2008-07-15  Joel E. Denny  <jdenny@ces.clemson.edu>

	Improve forward-compatibility with GNU M4.  Reported by Eric Blake at
	<http://lists.gnu.org/archive/html/bug-bison/2008-07/msg00000.html>.
	* bootstrap.conf (gnulib_modules): Add unsetenv.
	* lib/.gitignore, lib/.cvsignore (/unsetenv.c): Add.
	* m4/.gitignore, m4/.cvsignore (/environ.m4): Add.
	(/setenv.m4): Add.
	* src/output.c (output_skeleton): For the m4 invocation, pass -dV as
	the first argument because it may become position-dependent, and unset
	POSIXLY_CORRECT so Bison's skeletons have access to GNU M4 extensions.
	Add comments explaining these issues in more detail.

2008-07-14  Joel E. Denny  <jdenny@ces.clemson.edu>

	Add .gitignore everywhere based on .cvsignore.
	* .gitignore: New.
	* build-aux/.gitignore: New.
	* data/.gitignore: New.
	* doc/.gitignore: New.
	* etc/.gitignore: New.
	* examples/.gitignore: New.
	* examples/calc++/.gitignore: New.
	* lib/.gitignore: New.
	* m4/.gitignore: New.
	* po/.gitignore: New.
	* runtime-po/.gitignore: New.
	* src/.gitignore: New.
	* tests/.gitignore: New.

2008-05-27  Joel E. Denny  <jdenny@ces.clemson.edu>

	* NEWS (2.3b+): New section, empty for now.
	* configure.ac (AC_INIT): 2.3b -> 2.3b+.

2008-05-27  Joel E. Denny  <jdenny@ces.clemson.edu>

	* NEWS (2.3b): Update release date since there has been a delay in
	getting the announcements and tarballs out.

2008-05-23  Joel E. Denny  <jdenny@ces.clemson.edu>

	* NEWS: Version 2.3b.
	* configure.ac (AC_INIT): Likewise.
	(PACKAGE_COPYRIGHT_YEAR): Update to 2008.

2008-05-23  Joel E. Denny  <jdenny@ces.clemson.edu>

	* HACKING: Don't say don't mention HACKING in the ChangeLog.  We've
	been doing it for years.
	(Test suite): Mention maintainer-push-check and maintainer-xml-check.
	(Release Procedure): Add FIXME about make alpha being unmaintained.

2008-05-13  Joel E. Denny  <jdenny@ces.clemson.edu>

	* data/yacc.c: Reformat m4 a little for readability.
	* src/lalr.c (build_relations): Correct comment.

2008-05-12  Juan Manuel Guerrero  <juan.guerrero@gmx.de>

	DJGPP specific issue.
	* djgpp/config.sed: Fixes required to run configure scripts generated
	by autoconf 2.62.

2008-05-07  Joel E. Denny  <jdenny@ces.clemson.edu>

	* HACKING (Release Procedure): translation@iro.umontreal.ca is now
	coordinator@translationproject.org.

2008-05-06  Joel E. Denny  <jdenny@ces.clemson.edu>

	* THANKS: Add Eric Blake.

2008-04-23  Eric Blake  <ebb9@byu.net>

	Revert prior patch, by working around autoconf regression.
	* tests/output.at (m4_expand): Add workaround for autoconf 2.62.
	("Output file name: ("): Uncomment test.
	("Output file name: )"): Likewise.
	Based on an idea from Noah Misch.

2008-04-21  Joel E. Denny  <jdenny@ces.clemson.edu>

	Work-around an Autoconf 2.62 AT_SETUP bug that was not present in
	2.61.  Reported by Juan Manuel Guerrero at
	<http://lists.gnu.org/archive/html/bug-bison/2008-04/msg00011.html>.
	* tests/output.at ("Output file name: ("): Comment out test case for
	now.
	("Output file name: )"): Likewise.

2008-04-21  Joel E. Denny  <jdenny@ces.clemson.edu>

	* GNUmakefile: Update git-version-gen invocation so make dist
	succeeds.

2008-04-21  Joel E. Denny  <jdenny@ces.clemson.edu>

	Update to the current gnulib CVS repository, and fix trigraph handling
	in Bison.
	* bootstrap: Update gnulib CVS repository URL.
	(symlink_to_dir): Encapsulate the code that guarantees the destination
	directory exists into...
	(check_dst_dir): ... this new function, and...
	(cp_mark_as_generated): ... reuse it here so that bootstrap doesn't
	fail when copying files into lib/uniwidth/.
	* src/output.c (prepare_symbols): When writing yytname muscles, where
	symbol names will be encoded in C-string literals, tell quotearg to
	escape trigraphs.  This used to be the default in gnulib.
	* tests/regression.at (Token definitions): Because of the change in
	gnulib's quotearg behavior, string_as_id in parse-gram.y no longer
	escapes trigraphs in symbol names.  Thus, yytname no longer has
	trigraphs unnecessarily doubly escaped.  Update test case output.
	Extend test case to be sure Bison's own error messages will no longer
	have trigraphs in symbol names unnecessarily escaped once.

2008-04-20  Joel E. Denny  <jdenny@ces.clemson.edu>

	Fix make dist infinite loop reported by Juan Manuel Guerrero at
	<http://lists.gnu.org/archive/html/bug-bison/2008-01/msg00009.html>.
	* .cvsignore: Add .version.
	* .version.in: New.
	* bootstrap.conf (gnulib_modules): Add git-version-gen.
	* configure.ac (AC_CONFIG_FILES): Add .version.
	* build-aux/.cvsignore: Add git-version-gen.

2008-03-08  Joel E. Denny  <jdenny@ces.clemson.edu>

	* NEWS (2.3a+): Mention that -g now takes an argument.
	* doc/bison.texinfo (Bison Options): Reword -W entry a little for
	consistency.  Update the -g and -x entries now that they take
	arguments.  Use brackets to indicate optional arguments.
	* src/getargs.c (usage): Explain the relationship between arguments of
	long and short options more completely.  Document --defines and -d
	separately since the former takes an argument but, for POSIX Yacc, the
	latter does not.
	(short_options): Let -W take an optional argument like --warnings.
	(getargs): Sort cases.

2008-02-28  Akim Demaille  <demaille@gostai.com>

	* doc/bison.texinfo: Fix a few typos.

2008-02-28  Akim Demaille  <akim@epita.fr>

	* doc/bison.texinfo (Bison Options): Document -W.
	Based on Joel E. Denny's NEWS entry, and Automake's documentation.

2008-02-28  Akim Demaille  <akim@epita.fr>

	* src/getargs.c (short_options): Split and sort for readability.
	-g and -x take optional arguments, just like their long options.
	* build-aux/cross-options.pl: Use /x to make the regexp easier to
	understand.
	Fix the handling of $opt which resulted in all the argument to be
	considered as optional.

2008-02-22  Joel E. Denny  <jdenny@ces.clemson.edu>

	* NEWS (2.3a+): Don't say %language is experimental.  Mention Java and
	say its interface is experimental.
	* doc/bison.texinfo (Decl Summary): In the %language entry, mention
	Java.
	(Bison Options): In the -L and --language entry, mention Java.
	(Java Bison Interface): Say the interface is experimental.
	* src/getargs.c (usage): Mention -L and --language.

	* NEWS (2.3a+): Say the push parsing interface is experimental.
	* doc/bison.texinfo (Push Decl): Likewise.
	(Decl Summary): Likewise in the "%define api.push_pull" entry.
	(Push Parser Function): Likewise.
	(Pull Parser Function): Likewise.
	(Parser Create Function): Likewise.
	(Parser Delete Function): Likewise.
	(Table of Symbols): Likewise in the yypstate_delete, yypstate_new,
	yypull_parse, and yypush_parse entries.

	* NEWS (2.3a+): Mention XML support, and say the schema is
	experimental.
	* doc/bison.texinfo (Bison Options): Mention -x and --xml.
	* src/getargs.c (usage): Say the XML schema is experimental.

	* NEWS (2.3a+): Say option instead of flag.

2008-02-21  Wojciech Polak  <polak@gnu.org>

	* data/xslt/xml2xhtml.xsl (xsl:template match="/"): Change footer
	text.

2008-02-20  Joel E. Denny  <jdenny@ces.clemson.edu>

	Fix impure push parser compile error reported by Bob Rossi at
	<http://lists.gnu.org/archive/html/help-bison/2008-02/msg00023.html>.
	* data/yacc.c: Clean up whitespace in the output a little.
	(yypstate_allocated): Define for impure push parsers regardless of
	whether the pull interface is also requested.
	* tests/push.at (Push Parsing: Multiple impure instances): Extend to
	check impure push parsers without the pull interface.

	* data/yacc.c (yypstate_new): Don't try to invoke yyerror since
	yyerror takes arguments specified by %parse-param while yypstate_new
	does not.
	* doc/bison.texinfo (Parser Create Function): Document that
	yypstate_new returns 0 for multiple impure parser instances.
	* tests/push.at (Push Parsing: Multiple impure instances): Update
	expected stderr output.

2008-02-19  Joel E. Denny  <jdenny@ces.clemson.edu>

	* runtime-po/POTFILES.in (push.c): Remove.

2008-02-17  Joel E. Denny  <jdenny@ces.clemson.edu>

	* data/Makefile.am (dist_pkgdata_DATA): Remove push.c.
	* data/push.c: Rename to...
	* data/yacc.c: ... this, overwriting it.
	* etc/bench.pl.in (bench_grammar): `%pure-parser'-> `%define api.pure'.
	`%push-pull-parser' -> `%define api.push_pull "both"'.
	Remove old yacc.c tests, and update push.c tests to yacc.c.

2008-02-17  Joel E. Denny  <jdenny@ces.clemson.edu>

	* data/bison.m4 (b4_percent_code_get): Output %code block comments like
	`"%code top" blocks' instead of `%code "top" blocks'.
	* data/push.c: Import yacc.c changes from 2008-01-09 and 2007-08-03.
	Clean up whitespace in the output a little.

2008-02-16  Joel E. Denny  <jdenny@ces.clemson.edu>

	Fix documentation problems reported by Tim Josling at
	<http://lists.gnu.org/archive/html/bug-bison/2008-01/msg00013.html>.
	* NEWS (2.3a+): Mention removal of --no-parser, -n, and %no-parser.
	* doc/bison.texinfo (Token Decl): Token numbers are *nonnegative*
	integers.  Explain the effect of literal string aliases on error
	messages.  Copy token 0 documentation from the C++ skeleton
	documentation.

2008-02-16  Joel E. Denny  <jdenny@ces.clemson.edu>

	Accept a token number in a %left, %right, or %nonassoc for POSIX
	conformance.  Reported by Tim Josling at
	<http://lists.gnu.org/archive/html/bug-bison/2008-01/msg00010.html>.
	* NEWS (2.3a+): Mention.
	* doc/bison.texinfo (Precedence Decl): Describe how literal strings
	and code numbers are treated by precedence declarations.
	* src/parse-gram.y (precedence_declaration): Use symbols.prec instead
	of symbols.1.
	(symbols.prec): New, just like symbols.1 but uses symbol.prec instead
	of symbol.
	(symbol.prec): New, just like symbol but allows INT.
	* src/symtab.c (symbol_user_token_number_set): Remove an aver that no
	longer holds.
	* tests/regression.at (Token number in precedence declaration): New
	test case.

2008-02-06  Juan Manuel Guerrero  <juan.guerrero@gmx.de>

	DJGPP specific issues.
	* djgpp/config.bat: Add filenames that are not 8.3 clean and that must
	be changed.  Copyright timestamp adjusted.
	* djgpp/config.sed: Add filenames that are not 8.3 clean and that must
	be changed.  Copyright timestamp adjusted.
	* djgpp/config.site: Copyright timestamp adjusted.
	* djgpp/config_h.sed: Copyright timestamp adjusted.
	* djgpp/djunpack.bat: Copyright timestamp adjusted.
	* djgpp/fnchnage.lst: Add filenames that are not 8.3 clean to the
	filename translation list.
	* djgpp/subpipe.c (init_subpipe): Check the environment variables
	TMPDIR, TMP and TEMP, in that order, to determinate where the temp
	files shall be created.  Before trying to use the temp dir where the
	environment variable points to check that the dir really exists. If
	not default to the cwd as temp dir.  Copyright timestamp adjusted.
	* djgpp/subpipe.h: Copyright timestamp adjusted.
	* djgpp/testsuite.sed: Copyright timestamp adjusted.

2008-01-30  Paul Eggert  <eggert@cs.ucla.edu>

	* doc/bison.texinfo: Update Back-Cover text to reflect new GNU wording.

2008-01-09  Paul Eggert  <eggert@cs.ucla.edu>

	* data/yacc.c (yyparse): Correct the comment when locations aren't used.
	Problem reported by Claudio Saavedra in
	<http://lists.gnu.org/archive/html/bug-bison/2008-01/msg00003.html>.

2008-01-05  Wojciech Polak  <polak@gnu.org>

	* data/xslt/xml2xhtml.xsl (xsl:template match="/"): Precede an XHTML
	document's title with the input grammar file name.

2007-12-22  Joel E. Denny  <jdenny@ces.clemson.edu>

	Automate regression testing of the XML/XSLT implementation.  Discussed
	starting at
	<http://lists.gnu.org/archive/html/bison-patches/2007-11/msg00021.html>.
	* configure.ac (XSLTPROC): New substitution.
	* Makefile.am (maintainer-xml-check): New phony target invoking...
	* tests/Makefile.am (maintainer-xml-check): ... this new phony target
	invoking make maintainer-check with BISON_TEST_XML=1.
	* tests/atlocal.in (XSLTPROC): New.
	* tests/local.at (AT_BISON_CHECK): New macro to (1) instruct Valgrind
	not to report reachable memory when Bison is expected to have a
	non-zero exit status and (2) to compare XML/XSLT output with --graph
	and --report=all output for every working grammar when
	BISON_TEST_XML=1.
	(AT_BISON_CHECK_NO_XML): Likewise, but skip XML checks.
	(AT_BISON_CHECK_XML): New.
	(AT_QUELL_VALGRIND): New.
	* tests/testsuite.at (ORIGINAL_AT_CHECK): Remove this and...
	(AT_CHECK): ... don't redefine this since this was the old way to
	quell Valgrind.
	* tests/actions.at: Rewrite all AT_CHECK invocations for bison as
	AT_BISON_CHECK invocations.
	* tests/c++.at: Likewise.
	* tests/calc.at: Likewise.
	* tests/conflicts.at: Likewise.
	* tests/cxx-type.at: Likewise.
	* tests/existing.at: Likewise.
	* tests/glr-regression.at: Likewise.
	* tests/headers.at: Likewise.
	* tests/input.at: Likewise.
	* tests/java.at: Likewise.
	* tests/output.at: Likewise.
	* tests/push.at: Likewise.
	* tests/reduce.at: Likewise.
	* tests/regression.at: Likewise.
	* tests/sets.at: Likewise.
	* tests/skeletons.at: Likewise.
	* tests/synclines.at: Likewise.
	* tests/torture.at: Likewise.
	(Big triangle): Use AT_BISON_CHECK_NO_XML instead since this grammar
	tends to hang xsltproc.
	(Big horizontal): Likewise.

2007-12-08  Joel E. Denny  <jdenny@ces.clemson.edu>

	In XML output, remove redundant class attribute on symbol element.
	* data/xslt/bison.xsl (xsl:key name="bison:symbolByName"): New.
	* data/xslt/xml2xhtml.xsl (xsl:template match="symbol"): Use it to
	look up a symbol to determine whether it's a nonterminal or terminal.
	* src/gram.c (rule_rhs_print_xml): Remove class attribute.
	* src/state.c (state_rule_lookahead_tokens_print_xml): Likewise.

	Add prec/assoc information to XML output.
	* src/gram.c (grammar_rules_print_xml): For each rule that has a
	%prec, add a percent_prec attribute.
	* src/print-xml.c (print_grammar): For each terminal that has a
	precedence or associativity, add a prec or assoc attribute.
	(xml_indent): New.
	(xml_puts): Use xml_indent.
	(xml_printf): Use xml_indent.
	* src/print-xml.h (xml_indent): Prototype.

	* tests/existing.at (GNU pic Grammar): Fix a rule miscopied from
	<http://lists.gnu.org/archive/html/bug-bison/2003-04/msg00026.html>.

2007-12-08  Joel E. Denny  <jdenny@ces.clemson.edu>

	* data/xslt/bison.xsl (bison:ruleNumber): Rename to...
	(bison:ruleByNumber): ... this for clarity.
	* data/xslt/xml2dot.xsl (xsl:template match="item"): Update.
	* data/xslt/xml2text.xsl (xsl:template match="item"): Update.
	(xsl:template match="reduction"): Update.
	(xsl:template match="item"): Update.
	(xsl:template match="reduction"): Update.

	In the XML output, don't print the list of rules where symbols appear.
	Compute it in XSLT instead.  Discussed at
	<http://lists.gnu.org/archive/html/bison-patches/2007-09/msg00024.html>.
	* data/xslt/bison.xsl (bison:ruleByLhs): New.
	(bison:ruleByRhs): New.
	* data/xslt/xml2text.xsl (xsl:template match="terminal"): Use
	bison:ruleByRhs.
	(xsl:template match="terminal/rule"): Remove.
	(xsl:template match="nonterminal"): Use bison:ruleByLhs and
	bison:ruleByRhs.
	(xsl:template match="nonterminal/left/rule|nonterminal/right/rule"):
	Remove.
	* data/xslt/xml2xhtml.xsl (xsl:template match="terminal"): Use
	bison:ruleByRhs and mode="number-link" for rule template.
	(xsl:template match="terminal/rule"): Remove.
	(xsl:template match="nonterminal"): Use bison:ruleByLhs and
	bison:ruleByRhs and mode="number-link" for rule template.
	(xsl:template match="nonterminal/left/rule|nonterminal/right/rule"):
	Rewrite as...
	(xsl:template match="rule" mode="number-link"): ... this.
	* src/print-xml.c (print_grammar): Don't print the list of rules.

2007-12-01  Joel E. Denny  <jdenny@ces.clemson.edu>

	Don't let --report affect XML output; always print all information.
	Discussed at
	<http://lists.gnu.org/archive/html/bison-patches/2007-09/msg00020.html>.
	* src/conflicts.c (log_resolution): Implement.
	* src/print-xml.c (print_core): Implement.
	(print_state): Implement.
	(print_xml): Implement.

	* NEWS (2.3a+): Fix quotes.
	* src/parse-gram.y (prologue_declaration): For consistency with -v,
	don't let %verbose clear the list specified by --report.

2007-11-26  Akim Demaille  <akim@epita.fr>

	* data/Makefile.am (dist_pkgdata_DATA): Ship and install bison.xsl.

2007-11-24  Joel E. Denny  <jdenny@ces.clemson.edu>

	In the XML output, list useless and unused symbols and rules with the
	useful ones and add a "usefulness" attribute.  Discussed starting at
	<http://lists.gnu.org/archive/html/bison-patches/2007-09/msg00017.html>.
	* src/gram.c (grammar_rules_partial_print_xml): Remove.
	(grammar_rules_print_xml): Print all rules instead of just those
	useful in the grammar, and add a "usefulness" attribute.
	* src/gram.h (grammar_rules_partial_print_xml): Remove prototype.
	* src/print-xml.c (print_rules_useless_in_parser): Remove.
	(print_grammar): Print all nonterminals instead of just useful ones,
	and add a "usefulness" attribute to nonterminals and terminals.
	(print_xml): Don't print a separate "reductions" or
	"rules-useless-in-parser" element.
	* src/reduce.c (reduce_output): Use reduce_token_unused_in_grammar.
	(reduce_xml): Remove.
	(reduce_token_unused_in_grammar): New.
	(reduce_nonterminal_useless_in_grammar): New.
	* src/reduce.h (reduce_xml): Remove prototype.
	(reduce_token_unused_in_grammar): Add prototype.
	(reduce_nonterminal_useless_in_grammar): Add prototype.
	* data/xslt/xml2text.xsl: Update for XML changes.
	* data/xslt/xml2xhtml.xsl: Update for XML changes.
	* tests/reduce.at (Useless Terminals): Update output.
	(Useless Rules): Update output.
	(Reduced Automaton): Update output.

	Say "Terminals unused in grammar" instead of "Unused terminals".
	* NEWS (2.3a+): Update.
	* doc/bison.texinfo (Understanding): Update example output.
	* src/reduce.c (reduce_output): Implement.
	* data/xslt/xml2text.xsl: Implement.
	* data/xslt/xml2xhtml.xsl: Implement.

2007-11-18  Joel E. Denny  <jdenny@ces.clemson.edu>

	Accept --report-file=FILE to override the default `.output' filename.
	* NEWS (2.3a+): Mention.
	* doc/bison.texinfo (Bison Options): Add an entry.
	* src/files.c (compute_output_file_names): Don't override
	spec_verbose_file if already set.
	* src/getargs.c (usage): Document --report-file.
	(REPORT_FILE_OPTION): New anonymous enum member.
	(long_options): Add entry for it.
	(getargs): Add case for it setting spec_verbose_file.

	* build-aux/cross-options.pl: Don't record a short option just because
	there's an arg.
	* doc/.cvsignore: Add yacc.1.

2007-11-14  Akim Demaille  <akim@epita.fr>

	* doc/yacc.1.in: New.
	* configure.ac, doc/Makefile.am: Adjust.
	* configure.ac (PACKAGE_COPYRIGHT_YEAR): New substitution, and new
	config.h symbol.
	Use AC_SUBST for assignments too.
	* src/getargs.c (version): Use PACKAGE_COPYRIGHT_YEAR.

2007-11-10  Joel E. Denny  <jdenny@ces.clemson.edu>

	* src/gram.c: Remove comments that duplicate comments in gram.h.

	When reporting useless rules and nonterminals, say "useless in grammar"
	instead of "useless", and say "useless in parser" instead of "never
	reduced".  Discussed starting at
	<http://lists.gnu.org/archive/html/bison-patches/2007-10/msg00033.html>.
	* NEWS (2.3a+): Mention this change.
	* data/xslt/xml2text.xsl: Update output text and expected input XML
	element names to match changes below.
	* data/xslt/xml2xhtml.xsl: Likewise.
	(xsl:template match="bison-xml-report"): Add missing entry in Table of
	Contents: "Rules useless in parser due to conflicts".
	* doc/bison.texinfo (Decl Summary): Reword a little.
	(Understanding): Update example output for changes below.
	* src/gram.c: (rule_useful_p): Rename to...
	(rule_useful_in_grammar_p): ... this.
	(rule_useless_p): Rename to...
	(rule_useless_in_grammar_p): ... this.
	(rule_never_reduced_p): Rename to...
	(rule_useless_in_parser_p): ... this.
	(grammar_rules_print): Update for renames.
	(grammar_rules_print_xml): Update for renames.
	(grammar_rules_never_reduced_report): Rename to...
	(grammar_rules_useless_report): ... this since it is used for either
	kind of useless rule.
	* src/gram.h: Reword comments and update function names in prototypes.
	* src/main.c (main): Say "rule useless in parser due to conflicts".
	* src/print-xml.c (print_rules_never_reduced): Rename to...
	(print_rules_useless_in_parser): ... this, and rename output XML
	element "rules-never-reduced" to "rules-useless-in-parser".
	(print_xml): Update for rename.
	* src/print.c (print_results): Say "Rules useless in parser due to
	conflicts".
	* src/reduce.c (reduce_grammar_tables): Say "rule useless in grammar".
	(nonterminals_reduce): Say "nonterminal useless in grammar".
	(reduce_output): Say "Nonterminals useless in grammar".
	Say "Rules useless in grammar".
	(reduce_xml): Rename output XML element "useless" to
	"useless-in-grammar".
	(reduce_print): Don't report the count of grammatically useless rules
	as "rules never reduced" just because %yacc is specified.
	In the correct report of this count, say nonterminal(s) and rule(s)
	"useless in grammar".
	* tests/conflicts.at (S/R in initial): Update expected output.
	(Defaulted Conflicted Reduction): Likewise.
	(Unreachable States After Conflict Resolution): Likewise.
	* tests/existing.at (GNU pic Grammar): Likewise.
	* tests/reduce.at (Useless Nonterminals): Likewise.
	(Useless Rules): Likewise.
	(Reduced Automaton): Likewise.
	(Underivable Rules): Likewise.
	(Empty Language): Likewise.

2007-11-09  Joel E. Denny  <jdenny@ces.clemson.edu>

	* data/bison.m4 (b4_cat): Put a newline after the end delimiter of the
	here document and before the EOF so that BSD's implementation of Bourne
	shell doesn't parse the delimiter as part of the here document.
	* doc/.cvsignore: Add cross-options.texi.
	* src/getargs.c (usage): Add a blank line after the warning categories.

2007-11-08  Paolo Bonzini  <bonzini@gnu.org>

	* data/lalr1.java (Lexer): Remove usage of b4_pure_if.

2007-11-05  Akim Demaille  <akim@epita.fr>

	Remove Id: from bison.1.
	* doc/Makefile.am (remove_time_stamp): Include the sed invocation.
	(perl -0777 -pi -e 's/\.PP\nId): New.
	(.x.1): Use it to ignore the version control revision.

2007-11-05  Akim Demaille  <demaille@gostai.com>

	* build-aux/Makefile.am: Ship cross-options.pl.
	* doc/Makefile.am: Always refer to cross-options.texi with
	$(srcdir).
	(MAINTAINERCLEANFILES): Add it.

2007-11-04  Akim Demaille  <demaille@gostai.com>

	Generate the long/short option cross-table.
	* build-aux/cross-options.pl: New.
	* doc/Makefile.am (cross-options.texi): New.
	* doc/bison.texinfo: Use it.

2007-11-04  Akim Demaille  <demaille@gostai.com>

	Generate bison.1 using help2man.
	* doc/common.x, doc/bison.x: New.
	* doc/Makefile.am (bison.1, .x.1): New.
	The code is taken from autoconf-2.61/man/Makefile.am.
	* configure.ac: Look for help2man.

2007-11-04  Akim Demaille  <demaille@gostai.com>

	Complete --help.
	* src/getargs.c (usage): Document -W, make it clear that -d,
	-g and -x have optional arguments.

2007-11-04  Akim Demaille  <demaille@gostai.com>

	Find sha1sum when named gsha1sum.
	* bootstrap (find_tool): New.
	($SHA1SUM): New.

2007-10-28  Joel E. Denny  <jdenny@ces.clemson.edu>

	Deprecate %pure-parser and add `%define api.pure'.  Discussed starting
	at
	<http://lists.gnu.org/archive/html/bison-patches/2007-09/msg00006.html>.
	* NEWS (2.3a+): Mention.
	* data/bison.m4 (b4_pure_if): Don't define it here.
	* data/c.m4 (b4_identification): Depend on individual skeletons to
	define b4_pure_flag, b4_push_flag, or b4_pull_flag if they use the
	values of the %define variables api.pure or api.push_pull.  Define
	YYPURE, YYPUSH, and YYPULL accordingly.
	* data/glr.c: Define b4_pure_if based on `%define api.pure' unless
	glr.cc has already defined b4_pure_flag.
	* data/push.c: Define b4_pure_if based on `%define api.pure'.
	Remove YYPUSH and YYPULL since they're back in b4_identification again.
	* data/yacc.c: Define b4_pure_if based on `%define api.pure'.
	* doc/bison.texinfo (Pure Decl): Update.
	(Push Decl): Update.
	(Decl Summary): Add api.pure to %define entry.
	In %pure-parser entry, say it's deprecated and reference %define.
	(Pure Calling): Update.
	(Error Reporting): Update.
	(C++ Scanner Interface): Update.
	(How Can I Reset the Parser): Update.
	(Table of Symbols): In %pure-parser entry, say it's deprecated and
	reference %define.
	* src/getargs.c (pure_parser): Remove global variable.
	* src/getargs.h (pure_parser): Remove extern.
	* src/output.c (prepare): Don't define pure_flag muscle.
	* src/parse-gram.y (prologue_declaration): Implement %pure-parser as a
	wrapper around `%define api.pure'.
	* tests/calc.at (Simple LALR Calculator): Update.
	(Simple GLR Calculator): Update.
	* tests/cxx-type.at (GLR: Resolve ambiguity, pure, no locations):
	Update.
	(GLR: Resolve ambiguity, pure, locations): Update.
	(GLR: Merge conflicting parses, pure, no locations): Update.
	(GLR: Merge conflicting parses, pure, locations): Update.
	* tests/glr-regression.at (Uninitialized location when reporting
	ambiguity): Update
	* tests/input.at (Unused %define api.pure): New test case.
	* tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Update definition for
	AT_PURE_IF and AT_PURE_AND_LOC_IF.
	* tests/push.at (Push Parsing: Memory Leak for Early Deletion): Update.

2007-10-28  Joel E. Denny  <jdenny@ces.clemson.edu>

	%define push_pull -> %define api.push_pull.  Discussed starting at
	<http://lists.gnu.org/archive/html/bison-patches/2007-09/msg00005.html>.
	* data/push.c: Expect the new name.
	* data/yacc.c: Likewise.
	* doc/bison.texinfo (Push Decl): Update.
	(Decl Summary): Update %define entry.
	(Push Parser Function): Update.
	(Pull Parser Function): Update.
	(Parser Create Function): Update.
	(Parser Delete Function): Update.
	* tests/calc.at (Simple LALR Calculator): Update.
	* tests/input.at (%define enum variables): Update.
	* tests/push.at (Push Parsing: Memory Leak for Early Deletion): Update.
	(Push Parsing: Multiple impure instances): Update.
	(Push Parsing: Unsupported Skeletons): Update.
	* tests/torture.at (Exploding the Stack Size with Alloca): Update.
	(Exploding the Stack Size with Malloc): Update.

	* NEWS (2.3a+): Add an entry for the push parser, and clean up the
	other entries some.

2007-10-27  Joel E. Denny  <jdenny@ces.clemson.edu>

	For the XML output's terminal element, rename @number to @token-number,
	and add @symbol-number.  In the nonterminal element, rename @number to
	@symbol-number.  Discussed starting at
	<http://lists.gnu.org/archive/html/bison-patches/2007-10/msg00040.html>.
	* data/xslt/xml2text.xsl (xsl:template match="terminal"): Update for
	renames.
	(xsl:template match="nonterminal"): Likewise.
	* data/xslt/xml2xhtml.xsl (xsl:template match="terminal"): Likewise.
	(xsl:template match="nonterminal"): Likewise.
	* src/print-xml.c (print_grammar): Implement.

2007-10-21  Joel E. Denny  <jdenny@ces.clemson.edu>

	* data/xslt/xml2dot.xsl (xsl:template match="automaton/state"): After
	2007-10-11 change, the child elements here are items not rules.
	(xsl:template match="item"): New.
	(xsl:template match="rule"): Update for new reduced itemset.
	(xsl:template match="point"): Remove.
	(xsl:template match="empty"): For consistency with --graph, don't
	output "/* empty */".
	* data/xslt/xml2text.xsl (xsl:template match="terminal"): When invoking
	line-wrap, don't pass a negative value as first-line-length since this
	won't work with the following changes.
	(xsl:template name="line-wrap"): Simplify slightly.
	(xsl:template name="ws-search"): Eliminate recursion.
	* src/print_graph.c (print_core): Don't print a reduction's lookahead
	set next to an item whose dot is not at the end of the RHS even if it
	happens to be associated with the same rule.

2007-10-19  Joel E. Denny  <jdenny@ces.clemson.edu>

	Add %define lr.keep_unreachable_states.
	* NEWS (2.3a+): Mention it in the entry for unreachable state removal.
	* doc/bison.texinfo (Decl Summary): Mention it in the %define entry.
	* src/main.c (main): Implement it.
	* tests/conflicts.at (Unreachable States After Conflict Resolution):
	Extend to test it, and fix a typo.

2007-10-19  Joel E. Denny  <jdenny@ces.clemson.edu>

	* NEWS (2.3a+): Add entry for recent .output file lookahead set fix.
	* doc/bison.texinfo (Understanding): Remove a bogus lookahead set in
	the example .output text.
	* tests/regression.at (Extra lookahead sets in report): Improve wording
	of comments.

2007-10-17  Wojciech Polak  <polak@gnu.org>

	* src/print-xml.c (print_grammar): Renamed
	<terminal> and <nonterminal> attributes:
	"type" to "number" and "symbol" to "name".
	* data/xslt/xml2text.xsl (xsl:template match="terminal"):
	Use new attribute names.
	(xsl:template match="nonterminal"): Likewise.
	* data/xslt/xml2xhtml.xsl: Likewise.

2007-10-17  Joel E. Denny  <jdenny@ces.clemson.edu>

	* doc/bison.texinfo (Bison Options): Add entry for --print-datadir.
	(Option Cross Key): Likewise.

	* src/print-xml.c (print_core): Don't print a reduction's lookahead set
	next to an item whose dot is not at the end of the RHS even if it
	happens to be associated with the same rule.
	* src/print.c (print_core): Likewise.
	* tests/conflicts.at (Unresolved SR Conflicts): Update output.
	(Resolved SR Conflicts): Update output.
	* tests/regression.at (Extra lookahead sets in report): New test case.

2007-10-11  Wojciech Polak  <polak@gnu.org>

	* src/print-xml.c (print_core): Remove item set
	redundancy.
	* data/xslt/bison.xsl (bison:ruleNumber): New key.
	Improve processing time. Suggested by Joel E. Denny.
	* data/xslt/xml2dot.xsl (xsl:template name="escape"):
	Write xsl:param "required" attribute as comment.
	* data/xslt/xml2text.xsl (xsl:template match="item"): New.
	(xsl:template match="rule"): Support new reduced itemset.
	(xsl:template match="point"): Remove.
	* data/xslt/xml2xhtml.xsl: Likewise.

2007-10-09  Joel E. Denny  <jdenny@ces.clemson.edu>

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

2007-10-09  Joel E. Denny  <jdenny@ces.clemson.edu>

	Make xml2dot.xsl and --graph produce the same output.
	* data/xslt/xml2dot.xsl (xsl:template match="rule"): Use a `&#10;'
	instead of a `\n'.  That is, don't add escapes yet or they'll be doubly
	escaped later.
	(xsl:template name="output-node"): Use the new escape template instead
	of the string-replace template directly.
	(xsl:template name="output-edge"): Likewise.
	(xsl:template name="escape"): New, escapes backslashes and newlines in
	addition to quotation marks.
	* src/graphviz.c (start_graph, output_node, output_edge): Add
	whitespace to output for legibility.

	Make xml2text.xsl and --report produce the same output, and remove the
	XML "conflicts" element since a conflict summary is easily extracted
	from the automaton.
	* data/xslt/bison.xsl: New.
	(xsl:template match="state" mode="bison:count-conflicts): New.
	* data/xslt/xml2text.xsl: Import bison.xsl.
	(xsl:template match="bison-xml-report"): Instead of styling the
	"conflicts" element, style the "automaton" element with mode
	"conflicts".  Unlike the former, the latter lists S/R and R/R
	conflicts for a state on the same line.
	(xsl:template match="conflicts"): Remove.
	(xsl:template match="conflict"): Remove.
	(xsl:template match="terminal"): Line-wrap the list of rules in which
	the terminal is used.
	(xsl:template match="nonterminal"): Likewise for nonterminals.
	(xsl:template match="automaton" mode="conflicts"): New.
	(xsl:template match="state" mode="conflicts"): New.
	(xsl:template name="line-wrap"): New.
	(xsl:template name="ws-search"): New.
	* data/xslt/xml2xhtml.xsl: Import bison.xsl.
	(xsl:template match="bison-xml-report"): Instead of styling the
	"conflicts" element, style the "automaton" element with mode
	"conflicts."
	(xsl:template match="conflicts"): Remove.
	(xsl:template match="conflict"): Remove.
	(xsl:template match="automaton" mode="conflicts"): New.
	(xsl:template match="state" mode="conflicts): New.
	* src/conflicts.c (conflicts_output_xml): Remove.
	* src/conflicts.h (conflicts_output_xml): Remove prototype.
	* src/print-xml.c (print_xml): Don't invoke conflicts_output_xml.
	* src/print.c (print_grammar): Consistently wrap at the 66th column so
	the corresponding XSLT is easier.  Also, never wrap between a word and
	the comma that follows it.

2007-10-08  Joel E. Denny  <jdenny@ces.clemson.edu>

	Improve C++ namespace support.  Discussed starting at
	<http://lists.gnu.org/archive/html/help-bison/2007-09/msg00016.html>.
	* data/c++.m4: (b4_namespace_ref, b4_namespace_open,
	b4_namespace_close): New macros that interpret the %define variable
	"namespace" so its value can contain "::" to indicate nested
	namespaces.
	* data/glr.cc (b4_namespace): Don't define, and replace all uses with
	the above macros.
	* data/lalr1.cc (b4_namespace): Likewise.
	* data/location.cc (b4_namespace): Likewise.
	* doc/bison.texinfo (Decl Summary): Move `%define push_pull' entry
	inside a new table in the general %define entry.  Document `%define
	namespace' there as well.  Point the %name-prefix entry to it since it
	explains it more completely in the case of C++.
	(C++ Bison Interface): Mention `%define namespace' instead of
	%name-prefix.
	(Table of Symbols): Remove the `%define push_pull' entry.  The %define
	entry suffices.
	* tests/c++.at (Relative namespace references): New test case.
	(Absolute namespace references): New test case.
	(Syntactically invalid namespace references): New test case.
	* tests/input.at (C++ namespace reference errors): New test case.

2007-10-08  Joel E. Denny  <jdenny@ces.clemson.edu>

	Add syncline support and location accessor to internal %define
	interfaces.
	* data/bison.m4 (b4_percent_define_get_loc): New.
	(b4_percent_define_get_syncline): New.
	(b4_percent_define_flag_if): Use b4_percent_define_get_loc.
	(b4_percent_define_default): Record defining location as line 1 rather
	than 0 for the sake of synchronizing #line's, and define
	b4_percent_define_syncline(VARIABLE).
	(b4_percent_define_check_values): Use b4_percent_define_get_loc.
	* src/muscle_tab.c (muscle_syncline_grow): New.
	(muscle_code_grow): Use muscle_syncline_grow.
	(muscle_percent_define_insert): Use muscle_percent_define_get_loc, and
	define b4_percent_define_syncline(VARIABLE).
	(muscle_percent_define_get_loc): New.
	(muscle_percent_define_get_syncline): New.
	(muscle_percent_define_flag_if): Use muscle_percent_define_get_loc, and
	remove some unused variables.
	(muscle_percent_define_default): Record defining location as line 1
	rather than 0 for the sake of synchronizing #line's, and define
	b4_percent_define_syncline(VARIABLE).
	(muscle_percent_define_check_values): Use
	muscle_percent_define_get_loc.
	* src/muscle_tab.h (muscle_percent_define_get_loc): Prototype.
	(muscle_percent_define_get_syncline): Prototype.
	* tests/skeletons.at (%define Boolean variables: invalid skeleton
	defaults): Update output for location change.
	(Complaining during macro argument expansion): Extend to test
	b4_percent_define_get_loc and b4_percent_define_get_syncline errors.

2007-10-07  Joel E. Denny  <jdenny@ces.clemson.edu>

	Fix some error-reporting macro bugs.
	* data/bison.m4 (b4_cat): New.
	(b4_error, b4_error_at): Use b4_cat to send error directives directly
	to stdout so they don't become arguments to other macros.  Update
	comments and add examples.
	(b4_warn, b4_warn_at, b4_complain, b4_complain_at): Update comments and
	add examples.
	(b4_fatal, b4_fatal_at): Likewise, and invoke m4_exit(1) immediately
	after printing the error directive so that M4 doesn't report subsequent
	problems that are induced by this problem.
	* src/scan-skel.l: Recognize @` digraph outside of directive arguments
	instead of just in them.  Recognize @\n in both places.  Both expand to
	the empty string.  Needed by b4_cat.
	* tests/skeletons.at (Complaining during macro argument expansion):
	New test case.
	(Fatal errors make M4 exit immediately): New test case.

2007-10-04  Joel E. Denny  <jdenny@ces.clemson.edu>

	Implement --print-datadir.
	* src/getargs.c (usage): Mention.
	(PRINT_DATADIR_OPTION): New anonymous enum member.
	(long_options): Add entry for it.
	(getargs): Add case for it calling compute_pkgdatadir.
	* src/output.c (output_skeleton): Encapsulate data directory
	computation from here...
	(prepare): ... and from here...
	(compute_pkgdatadir): ... into this new function.
	* src/output.h (compute_pkgdatadir): Prototype.

2007-09-29  Joel E. Denny  <jdenny@ces.clemson.edu>

	* src/print-xml.c (escape_bufs): New static global variable
	replacing...
	(xml_escape_n): ... the static local variable buf here.
	(print_xml): Free memory for escape_bufs.
	* src/reduce.c (reduce_xml): XML-escape terminal symbol tags.

2007-09-25  Joel E. Denny  <jdenny@ces.clemson.edu>

	Replace `%push-parser' and `%push-pull-parser' with
	`%define push_pull "push"' and `%define push_pull "both"'.
	`%define push_pull "pull"' is the default.
	* doc/bison.texinfo (Push Decl, Push Parser Function,
	Pull Parser Function, Parser Create Function, Parser Delete Function):
	Update declarations.
	(Decl Summary, Table of Symbols): Replace %push-parser and
	%push-pull-parser entries with a %define push_pull entry.
	* data/bison.m4 (b4_percent_define_check_values): New macro.
	(b4_pull_if, b4_push_if, b4_use_push_for_pull_if): Move these
	definitions...
	* data/c.m4 (b4_identification): ... and the YYPUSH and YYPULL cpp
	definitions...
	* data/push.c: ... to here and compute them from the value of the
	%define variable push_pull.
	* data/c-skel.m4: Instead of choosing the push.c skeleton for push
	parsing requests here...
	* data/yacc.c: ... hack this to switch to push.c any time
	b4_use_push_pull_flag or the %define variable push_pull is set.  This
	will go away when we mv push.c yacc.c.
	* data/c++-skel.m4, data/glr.c, data/java-skel.m4: Don't report that
	push parsing is not supported since unused %define variables are
	reported anyway.
	* src/getargs.c, src/getargs.h (pull_parser, push_parser): Remove.
	* src/muscle_tab.h (muscle_percent_define_check_values): Update
	comments for consistency with b4_percent_define_check_values.
	* src/output.c (prepare): Don't insert b4_pull_flag and b4_push_flag
	muscles.
	* src/parse-gram.y (PERCENT_PUSH_PARSER, PERCENT_PUSH_PULL_PARSER):
	Remove.
	(prologue_declaration): Remove %push-parser and %push-pull-parser
	rules.
	* src/scan-gram.l (%push-parser, %push-pull-parser): Remove rules.
	* tests/calc.at: Update declarations.
	* tests/input.at (%define enum variables): New test case.
	* tests/push.at (Push Parsing: Memory Leak for Early Deletion): Update
	declaration.
	(Push Parsing: Multiple impure instances): Update declaration.
	(Push Parsing: Unsupported Skeletons): New test case.
	* tests/torture.at (Exploding the Stack Size with Alloca): Update
	declaration.
	(Exploding the Stack Size with Malloc): Update declaration.

2007-09-24  Wojciech Polak  <polak@gnu.org>

	Add XSLT transformations.

	* data/xslt/xml2dot.xsl: Transform XML into DOT.
	* data/xslt/xml2text.xsl: Transform XML into plain text.
	* data/xslt/xml2xhtml.xsl: Transform XML into XHTML.
	* data/Makefile.am (xsltdir): New variable.
	(dist_xslt_DATA): Add xslt/*.xsl files.

2007-09-23  Paul Eggert  <eggert@cs.ucla.edu>

	* src/conflicts.c (log_resolution): Fix indenting bugs I introduced.
	Problem reported by Wojciech Polak.
	* src/print-xml.c (xml_puts): Work even if LEVEL exceeds INT_MAX/2.
	(xml_printf): Undo change I made on 21 September; that is,
	indent 2 spaces, not 1.

2007-09-23  Joel E. Denny  <jdenny@ces.clemson.edu>

	Pacify ./configure --enable-gcc-warnings.
	* src/print-xml.c, src/print-xml.h (xml_puts): Make third argument
	`char const *' instead of `char *'.
	* src/state.c (state_rule_lookahead_tokens_print_xml): Remove unused
	local variable `sep'.

2007-09-21  Paul Eggert  <eggert@cs.ucla.edu>

	* src/gram.c (rule_rhs_print_xml): Now static, since it isn't used
	elsewhere.
	* src/print-xml.c: Prefer "const" after types; that's more consistent.
	(xml_printf): Indent just 1 space for level.
	(e_char, xlate_char): Remove.
	(xml_escape_string): Rewrite to avoid undefined behavior (used
	storage that was freed from the stack).
	(xml_escape_n): Don't bother checking for subscript error.

2007-09-21  Wojciech Polak  <polak@gnu.org>

	Add Bison XML Automaton Report.

	Add support for an -x option to generate an XML report.
	It is not documented yet.
	* src/print-xml.c: New file.
	* src/print-xml.h: Likewise.
	* lib/timevar.def (TV_XML): New var.
	* src/Makefile.am (bison_SOURCES): Add print-xml.c, print-xml.h.
	* src/conflicts.c: Include print-xml.h.
	(solved_conflicts_xml_obstack): New var.
	(log_resolution, conflicts_solve, conflicts_free):
	Add support for XML report.
	(conflicts_output_val): New function.
	* src/conflicts.h (conflicts_output_val): New decl.
	* src/files.c (spec_xml_file): New var.
	(compute_output_file_names, output_file_names_free): Add XML support.
	* src/files.h (spec_xml_file): New decl.
	* src/getargs.c (xml_flag): New var.
	(usage, short_options, long_options, getargs): Add XML support.
	* src/getargs.h (xml_flag): New decl.
	* src/gram.c: Include print-xml.h.
	(rule_lhs_print_xml, rule_rhs_print_xml):
	(grammar_rules_partial_print_xml, grammar_rules_print_xml):
	New functions.
	* src/gram.h: Declare external ones.
	* src/main.c: Include print-xml.h.
	(main): Add XML support.
	* src/reduce.c: Include print-xml.h.
	(reduce_xml): New function.
	* src/reduce.h: Declare it.
	* src/state.c: Include print-xml.h.
	(state_new): Add XML support.
	(state_rule_lookahead_tokens_print_xml): New function.
	* src/state.h: Declare it.
	(struct state): New member solved_conflicts_xml.
	* src/symtab.c (symbol_class_get_string): New function.
	* src/symtab.h: Declare it.

2007-09-21  Paul Eggert  <eggert@cs.ucla.edu>

	* GNUmakefile: Switch to coreutils's version.
	* bootstrap: Likewise.
	* Makefile.cfg: Adjust to new GNUmakefile.
	* README-hacking: Likewise.

	Import from gnulib:

	2006-08-18  Paul Eggert  <eggert@cs.ucla.edu>
		    Bruno Haible  <bruno@clisp.org>

	* m4/bison-i18n.m4 (BISON_I18N): Also handle the case where yacc exists
	and is a script that invokes bison. Tighten the code. Add comments.

2007-08-28  Joel E. Denny  <jdenny@ces.clemson.edu>

	Spell "boolean" as "Boolean".  Reported by Akim Demaille.
	* data/bison.m4 (b4_percent_define_flag_if): Fix complaint.
	* doc/bison.texinfo (Decl Summary): Fix.
	* src/muscle_tab.c (muscle_percent_define_flag_if): Fix complaint.
	* tests/input.at (Boolean %define variables): Update output.
	* tests/skeletons.at (%define boolean variables: invalid skeleton
	defaults): Rename to...
	(%define Boolean variables: invalid skeleton defaults): ... this and
	update output.

2007-08-17  Joel E. Denny  <jdenny@ces.clemson.edu>

	In impure push mode, don't allow more than one yypstate to be allocated
	since multiple impure parsers would corrupt yynerrs.
	* data/push.c (yypstate_allocated): New static global variable
	initialized to 0.
	(yypull_parse): If yypstate_new returns 0, don't report it as memory
	exhaustion if yypstate_allocated is 1, but still return 2.
	(yypstate_new): Invoke yyerror and return 0 if yypstate_allocated is
	already 1.  Otherwise, set it to 1.
	(yypstate_delete): Set it to 0.
	* tests/push.at (Push Parsing: Multiple impure instances): New test
	case.

2007-08-17  Bob Rossi  <bob@brasko.net>

	* doc/bison.texinfo (Push Decl): Document the push parser.
	(Table of Symbols): Ditto.
	(Pure Decl): Ditto.
	(Decl Summary): Ditto.
	(Multiple Parsers, Push Parser Function, Pull Parser Function,
	Parser Create Function, Parser Delete Function):
	Add new push parser symbols.
	(Table of Symbols): Document push-parser, push-pull-parser,
	yypush_parse, yypull_parse, yypstate_new and yypstate_delete.

2007-08-15  Paul Eggert  <eggert@cs.ucla.edu>

	Update to GPLv3.
	* doc/gpl-3.0.texi: New file.
	* doc/gpl.texi: Remove.
	* COPYING, GNUmakefile, HACKING, Makefile.am, Makefile.cfg:
	* Makefile.maint, NEWS, PACKAGING, README, README-alpha:
	* README-hacking, TODO, bootstrap, bootstrap.conf:
	* configure.ac, data/Makefile.am, data/README, data/bison.m4:
	* data/c++-skel.m4, data/c++.m4, data/c-skel.m4, data/c.m4:
	* data/glr.c, data/glr.cc, data/java-skel.m4, data/java.m4:
	* data/lalr1.cc, data/lalr1.java, data/location.cc:
	* data/push.c, data/yacc.c, data/m4sugar/m4sugar.m4:
	* djgpp/Makefile.maint, djgpp/README.in, djgpp/config.bat:
	* djgpp/config.sed, djgpp/config.site, djgpp/config_h.sed:
	* djgpp/djunpack.bat, djgpp/subpipe.c, djgpp/subpipe.h:
	* djgpp/testsuite.sed, doc/Makefile.am, doc/bison.texinfo:
	* doc/fdl.texi, doc/refcard.tex, etc/Makefile.am, etc/README:
	* etc/bench.pl.in, examples/Makefile.am, examples/extexi:
	* examples/calc++/Makefile.am, lib/Makefile.am, lib/abitset.c:
	* lib/abitset.h, lib/bbitset.h, lib/bitset.c, lib/bitset.h:
	* lib/bitset_stats.c, lib/bitset_stats.h, lib/bitsetv-print.c:
	* lib/bitsetv-print.h, lib/bitsetv.c, lib/bitsetv.h:
	* lib/ebitset.c, lib/ebitset.h, lib/get-errno.c:
	* lib/get-errno.h, lib/lbitset.c, lib/lbitset.h:
	* lib/libiberty.h, lib/main.c, lib/subpipe.c, lib/subpipe.h:
	* lib/timevar.c, lib/timevar.def, lib/timevar.h:
	* lib/vbitset.c, lib/vbitset.h, lib/yyerror.c:
	* m4/c-working.m4, m4/cxx.m4, m4/m4.m4, m4/subpipe.m4:
	* m4/timevar.m4, src/LR0.c, src/LR0.h, src/Makefile.am:
	* src/assoc.c, src/assoc.h, src/closure.c, src/closure.h:
	* src/complain.c, src/complain.h, src/conflicts.c:
	* src/conflicts.h, src/derives.c, src/derives.h, src/files.c:
	* src/files.h, src/flex-scanner.h, src/getargs.c:
	* src/getargs.h, src/gram.c, src/gram.h, src/graphviz.c:
	* src/lalr.c, src/lalr.h, src/location.c, src/location.h:
	* src/main.c, src/muscle_tab.c, src/muscle_tab.h:
	* src/nullable.c, src/nullable.h, src/output.c, src/output.h:
	* src/parse-gram.c, src/parse-gram.h, src/parse-gram.y:
	* src/print.c, src/print.h, src/print_graph.c:
	* src/print_graph.h, src/reader.c, src/reader.h, src/reduce.c:
	* src/reduce.h, src/relation.c, src/relation.h:
	* src/revision.h, src/scan-code.h, src/scan-code.l:
	* src/scan-gram.h, src/scan-gram.l, src/scan-skel.h:
	* src/scan-skel.l, src/state.c, src/state.h, src/symlist.c:
	* src/symlist.h, src/symtab.c, src/symtab.h, src/system.h:
	* src/tables.c, src/tables.h, src/uniqstr.c, src/uniqstr.h:
	* tests/Makefile.am, tests/actions.at, tests/c++.at:
	* tests/calc.at, tests/conflicts.at, tests/cxx-type.at:
	* tests/existing.at, tests/glr-regression.at:
	* tests/headers.at, tests/input.at, tests/java.at:
	* tests/local.at, tests/output.at, tests/push.at:
	* tests/reduce.at, tests/regression.at, tests/sets.at:
	* tests/skeletons.at, tests/synclines.at, tests/testsuite.at:
	* tests/torture.at:
	Update to GPLv3.

2007-08-11  Joel E. Denny  <jdenny@ces.clemson.edu>

	Get rid of broken %no-parser, -n, and --no-parser implementation and
	documentation.
	* TODO: Don't mention them.
	* doc/bison.1: Likewise.
	* doc/bison.texinfo (Decl Summary): Likewise.
	(Bison Options): Likewise.
	(Option Cross Key): Likewise.
	* src/getargs.c (no_parser_flag): Remove global variable.
	(usage): Don't print description of -n and --no-parser.
	(long_options): Remove --no-parser entry here.
	(getargs): Remove -n case in the switch here.
	* src/getargs.h (no_parser_flag): Remove extern.
	* tests/regression.at (Web2c Actions): Remove comment that mentions
	--no-parser.

2007-08-11  Joel E. Denny  <jdenny@ces.clemson.edu>

	* tests/push.at (Push Parsing: Memory Leak for Early Deletion): Do not
	name user variables starting with `yy'.  Just pass NULL instead of a
	dummy local &yylval to yypush_parse.
	* tests/torture.at (AT_DATA_STACK_TORTURE): Do not name user variables
	starting with `yy'.

2007-08-03  Joel E. Denny  <jdenny@ces.clemson.edu>

	* data/yacc.c (yyexhaustedlab): Define it when YYERROR_VERBOSE is
	true since it's then always used regardless of whether yyoverflow is
	defined.  Reported by Christian Burger at
	<http://lists.gnu.org/archive/html/bug-bison/2007-07/msg00031.html>.
	* THANKS: Add Christian Burger.

	* ChangeLog: For changes in doc/bison.texinfo, consistently reference
	node names: say "Decl Summary" not "Bison Declaration Summary".

2007-07-28  Joel E. Denny  <jdenny@ces.clemson.edu>

	* src/muscle_tab.c (muscle_percent_define_flag_if): In order to
	determine whether this function has already complained about an invalid
	value for a %define boolean variable, don't check whether Bison has
	ever examined the value.  As written, the check was a tautology.
	Instead, record and check for this complaint using a separate muscle.

2007-07-27  Joel E. Denny  <jdenny@ces.clemson.edu>

	Fix push parsing memory leak reported by Brandon Lucia at
	<http://lists.gnu.org/archive/html/bug-bison/2007-07/msg00032.html>.
	* THANKS: Add Brandon Lucia.
	* data/push.c (yypstate_delete): Free the stack if it was reallocated
	but the parse never completed and thus freed it.
	* tests/Makefile.am (TESTSUITE_AT): Add push.at.
	* tests/testsuite.at: Include push.at.
	* test/push.at: New.
	(Push Parsing: Memory Leak for Early Deletion): New test case.

2007-07-17  Joel E. Denny  <jdenny@ces.clemson.edu>

	Improve handling of multiple S/R conflicts in the same state and of S/R
	conflicts involving multiple reductions.
	* src/conflicts.c (resolve_sr_conflict): Don't assign the error action
	set for a state here or Bison will abort if it is reassigned on a
	later conflicted reduction in the same state.
	Similarly, don't finalize and assign the solved conflicts report here
	or it will be lost if it is reassigned on a later conflicted reduction
	in the same state.
	(set_conflicts): Instead, assign them both here after all S/R conflicts
	in the state have been fully examined.
	* src/print.c (shift_set): Rename to...
	(no_reduce_set): ... this.
	(print_reductions): Update for rename, and add %nonassoc error action
	tokens to no_reduce_set so that, when printing the first remaining
	reduction on an error action token, the reduction is enclosed in
	brackets.
	(print_results): Update for rename.
	* tests/conflicts.at (Solved conflicts report for multiple reductions
	in a state): New test case.
	(%nonassoc error actions for multiple reductions in a state): New test
	case.

	* src/main.c (main): Don't depend on C99 features.

2007-07-16  Joel E. Denny  <jdenny@ces.clemson.edu>

	* build-aux/.cvsignore: Add compile.
	* lib/.cvsignore: Add charset.alias, ref-add.sed, ref-del.sed, and
	uniwidth.

2007-07-10  Joel E. Denny  <jdenny@ces.clemson.edu>

	* bootstrap (slurp): Create target directories that don't exist.
	Specifically, we need lib/uniwidth/ because of recent Gnulib changes.

2007-07-09  Joel E. Denny  <jdenny@ces.clemson.edu>

	* LR0.c (new_itemsets): Fix wording in comments: say item index rather
	than item number.
	* closure.c (closure): Likewise.
	* state.h (reductions): Comment sorting of rules.
	(state): Comment sorting of items.

2007-07-02  Joel E. Denny  <jdenny@ces.clemson.edu>

	Fix C++ test cases after recent Gnulib changes.  Discussed starting at
	<http://lists.gnu.org/archive/html/bug-bison/2007-07/msg00000.html>.
	* examples/calc++/Makefile.am (DEFAULT_INCLUDES): Override Automake's
	definition in order to avoid Gnulib headers since we don't use config.h
	here.
	* tests/output.at (AT_CHECK_OUTPUT_FILE_NAME): Use AT_DATA_GRAMMAR
	rather than AT_DATA so that config.h is included.

2007-07-01  Joel E. Denny  <jdenny@ces.clemson.edu>

	* data/glr.c (yy_yypstack, yypstates, yypdumpstack): Use YYFPRINTF
	instead of fprintf.  Guard these functions with #if YYDEBUG instead of
	#ifdef YYDEBUG for consistency with all other uses of YYDEBUG in Bison
	and so that YYFPRINTF is guaranteed to be defined here.

2007-05-29  Joel E. Denny  <jdenny@ces.clemson.edu>

	* src/muscle_tab.c (muscle_percent_define_invalid_value): Replace
	with...
	(muscle_percent_define_check_values): ... this more helpful function.
	Again, it's not used yet, but it will be.
	* src/muscle_tab.h: Likewise.

	Improve some comments in parser table construction.
	* src/LR0.c (new_itemsets): Explain sorting of itemset and kernel_base.
	(generate_states): Don't mention ruleset, which is internal to closure.
	* src/closure.c (closure): Explain sorting of core and itemset, which
	is required for this function to behave correctly.
	* src/closure.h (closure): Mention sorting.

2007-05-28  Joel E. Denny  <jdenny@ces.clemson.edu>

	* src/lalr.c (state_lookahead_tokens_count): For code readability,
	move the check for disabled transitions to an aver since conflict
	resolution hasn't happened yet.

	* src/lalr.c (state_lookahead_tokens_count): Remove the check that
	labels a state as inconsistent just because it has error transitions.
	The original form of this check appeared in revision 1.1 of lalr.c,
	which was committed on 1991-12-21.  Now (at least), changing the
	consistency label on such a state appears to have no useful effect in
	any of the places it is examined, which I enumerate below.  The key
	point to understanding each item in this enumeration is that a state
	with an error transition is labelled consistent in the first place only
	if it has no rules, so the check cannot matter for states that have
	rules.  (1) Labelling a state as inconsistent will cause set_conflicts
	to try to identify its conflicts, and a state must have *rules* to have
	conflicts.  (2) Labelling a state as inconsistent will affect how
	action_row sets the default *rule* for the state.  (3) Labelling a
	state as inconsistent will cause build_relations to add lookback edges
	to *rules* in that state.
	* src/state.h (struct state): Word the comment for member consistent
	more carefully.

2007-05-27  Joel E. Denny  <jdenny@ces.clemson.edu>

	Don't depend on C99 features.
	* src/conflicts.c (conflicts_update_state_numbers): Fix for-loop.
	* src/lalr.c (lalr_update_state_numbers): Fix for-loop.
	* src/reader.c (check_and_convert_grammar): Fix for-loop.
	* src/state.c (state_mark_reachable_states): Fix for-loop.
	(state_remove_unreachable_states): Fix for-loop.

	Don't widen struct state with member reachable just to temporarily
	record reachability.  Instead, use a local bitset.
	* src/state.h (struct state): Remove member.
	* src/state.c (state_new): Don't initialize it.
	(state_mark_reachable_states): Rename to...
	(state_record_reachable_states): ... this, and use bitset.
	(state_remove_unreachable_states): Use bitset.

2007-05-26  Joel E. Denny  <jdenny@ces.clemson.edu>

	* src/Makefile.am (yacc): Quote target action commands properly so
	that the yacc script isn't corrupt.  Reported by Hans Aberg at
	<http://lists.gnu.org/archive/html/bug-bison/2007-05/msg00003.html>.

	* data/glr.c (yylval): As in yacc.c, don't extern in the header for
	the case of pure parsers.  Reported by Frans Englich at
	<http://lists.gnu.org/archive/html/help-bison/2007-05/msg00018.html>.
	* THANKS: Add Frans Englich.

	* NEWS (2.3a+): In the %code entry, reference section `Bison
	Declaration Summary' from the manual now since the %code summary has
	moved there.
	* doc/bison.texinfo (Prologue Alternatives): Mention that directives
	in the rules section must be terminated by semicolons.

2007-05-20  Joel E. Denny  <jdenny@ces.clemson.edu>

	Extend the front-end API for %define variables to more completely
	mirror the back-end.  This will be useful in the future.
	* data/bison.m4 (b4_percent_define_get, b4_percent_define_ifdef):
	Update comments to mention the new front-end counterparts of these
	macros.
	* src/muscle_tab.c (MUSCLE_COMMON_DECODE): New macro with common code
	for muscle_string_decode and muscle_location_decode.
	(muscle_string_decode): New static function.
	(muscle_location_decode): Use MUSCLE_COMMON_DECODE.
	(muscle_percent_define_get, muscle_percent_define_ifdef): New
	functions.
	(muscle_percent_define_flag_if): Use muscle_percent_define_ifdef and
	muscle_percent_define_get to mimic the b4_percent_define_flag_if
	implementation more closely.
	(muscle_percent_define_invalid_value): New function.
	* src/muscle_tab.h (muscle_percent_define_get,
	muscle_percent_define_ifdef, muscle_percent_define_invalid_value):
	Prototype.

2007-05-07  Joel E. Denny  <jdenny@ces.clemson.edu>

	* NEWS (2.3a+): Mention yesterday's state-removal change.
	(2.3a): Remove the %language entry, which was added after 2.3a.
	* src/LR0.c, src/closure.c, src/closure.h, src/conflicts.c,
	src/conflicts.h, src/lalr.c, src/lalr.h, src/print.c,
	src/print_graph.c, src/state.c, src/state.h, tests/conflicts.at,
	tests/existing.at: Update copyright date.

2007-05-06  Joel E. Denny  <jdenny@ces.clemson.edu>

	If conflict resolution makes states unreachable, remove those states,
	report rules that are then unused, and don't report conflicts in those
	states.
	* src/conflicts.c, src/conflicts.h (conflicts_update_state_numbers):
	New global function.
	* src/lalr.c, src/lalr.h (lalr_update_state_numbers): New global
	function.
	* src/main.c (main): After conflict resolution, remove the unreachable
	states and update all data structures that reference states by number.
	* src/state.c (state_new): Initialize each state's reachable member to
	false.
	(state_mark_reachable_states): New static function.
	(state_remove_unreachable_states): New global function.
	* src/state.h (struct state): Add member bool reachable.
	(state_remove_unreachable_states): Prototype.
	* tests/conflicts.at (Unreachable States After Conflict Resolution):
	New test case.
	* tests/existing.at (GNU pic Grammar): Update test case output now that
	an unused rule is discovered.

2007-05-06  Joel E. Denny  <jdenny@ces.clemson.edu>

	Minor code cleanup in parser table construction.
	* src/LR0.c (new_itemsets): Use item_number_is_symbol_number.
	(new_itemsets, save_reductions): Update for rename to nitemset.
	* src/closure.c (nritemset): Rename to...
	(nitemset): ... this since the "r" appears to meaningless and isn't
	used in the comments.
	(closure): Update for rename.
	* src/closure.h (nritemset): Update extern to...
	(nitemset): ... this.
	* src/lalr.c (LA): Fix a typo in comments.
	* src/print.c (print_core): Update for rename to nitemset.
	* src/print_graph.c (print_graph): Likewise.
	* src/state.h: Fix some typos in header comments.

2007-04-04  Paul Eggert  <eggert@cs.ucla.edu>

	* THANKS: Use ASCII for Sebastien Fricker's name.  Bison source
	still sticks to ASCII.  Sorry!

	* README-hacking: New file, taken mostly from coreutils, with changes
	for Bison.  Contains much of the contents of:
	* README-cvs: Remove.
	* bootstrap: Sync from gnulib.
	* build-aux/.cvsignore: Remove *.t, mkinstalldirs.
	* lib/.cvsignore: Add wchar.h, wctype.h.  Remove exit.h.

2007-03-10  Joel E. Denny  <jdenny@ces.clemson.edu>

	* doc/bison.texinfo (Destructor Decl): Fix typo reported by Sebastian
	Setzer.
	(Java Differences): Fix some typos.
	* THANKS: Add Sebastian Setzer.

2007-03-07  Paolo Bonzini  <bonzini@gnu.org>

	* data/java.m4 (b4_single_class_if): Remove.
	(b4_abstract_if): Look at "%define abstract".
	(b4_lexer_if): New.
	(b4_union_name): Rename...
	(b4_yystype): ... to this.  Map to "%define stype".
	(b4_rhs_value, b4_parse_param_decl, b4_lex_param_decl,
	b4_maybe_throws): Fix quoting.
	(b4_lex_param_call): Move below to keep b4_*_param_decl close.
	* data/lalr1.java (Lexer interface): Always define.
	(Lexer interface within parser class): Remove.
	(YYLexer class): New, used when "%code lexer" is present.
	(constructor): When "%code lexer" is used, pass %lex-param
	to the lexer constructor.
	(yylex, yyparse): Remove %lex-param from method invocations
	(YYStack, yyaction, yyparse): Rename b4_union_name to b4_yystype.

	* doc/bison.texinfo (Java Bison Interface): Mention "%define
	abstract".  Rename "%define union_name" to "%define stype".
	Rename method names according to previous patch.
	(Java Scanner Interface): Describe "%code lexer" instead of
	"%pure-parser" and "%define single_class".
	(Java Differences): Mention "%code lexer".

	* tests/java.at (_AT_DATA_JAVA_CALC_Y): Remove final argument.
	Include scanner here, using macros from tests/local.at.
	(AT_DATA_CALC_Y): Remove final argument.
	(_AT_CHECK_JAVA_CALC): Likewise.
	(AT_CHECK_JAVA_CALC): Likewise.  Test all four combinations
	of %locations and %error-verbose.
	(main): Test with and without %lex-param.
	* tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Push AT_LEXPARAM_IF.
	(AT_BISON_OPTION_POPDEFS): Pop it.

2007-03-07  Juan Manuel Guerrero  <juan.guerrero@gmx.de>

	DJGPP spefic issue.  Inhibit the use of disallowed characters for
	file name genertion on Win98, WinXP, etc.  These are |<>":?*\
	and concern testsuite case 46.
	* Makefile.am: djgpp/testsuite.sed added to EXTRA_DIST
	* djgpp/testsuite.sed: Inhibit the use of disallowed characters.
	* djgpp/config.bat: Inhibit the use of disallowed characters.

2007-03-02  Joel E. Denny  <jdenny@ces.clemson.edu>

	Miscellaneous %define and %code cleanup.
	* data/bison.m4 (b4_percent_define_flag_if): Correct comments on how
	values are interpreted.
	* doc/bison.texinfo (Decl Summary): Clean up and extend %define
	documentation a little more.
	* src/muscle_tab.c (MUSCLE_USER_NAME_CONVERT,
	muscle_percent_define_insert, muscle_percent_code_grow): New
	functions/macros.
	* src/muscle_tab.h (muscle_percent_define_insert,
	muscle_percent_code_grow): Prototype.
	* src/parse-gram.y (prologue_declaration): Use
	muscle_percent_define_insert and muscle_percent_code_grow when parsing
	%define and %code directives.

	Make it easy to share %define boolean variables between the front-end
	and back-end.  Though not used yet, this will be useful in the future.
	* data/bison.m4 (b4_check_user_names): Rewrite comments to talk about
	Bison uses of names rather than just skeleton uses of names.
	(b4_percent_define_get, b4_percent_define_ifdef): Rename
	b4_percent_define_skeleton_variables(VARIABLE) to
	b4_percent_define_bison_variables(VARIABLE).
	(b4_percent_code_get, b4_percent_code_ifdef): Rename
	b4_percent_code_skeleton_qualifiers(QUALIFIER) to
	b4_percent_code_bison_qualifiers(QUALIFIER).
	(b4_check_user_names_wrap): Update for renames.
	* src/muscle_tab.c, src/muscle_tab.h (muscle_percent_define_flag_if,
	muscle_percent_define_default): New functions mimicking
	b4_percent_define_flag_if and b4_percent_define_default.

	For %define variables, report locations for invalid values and
	redefinitions.
	* data/bison.m4 (b4_percent_define_flag_if): Read
	b4_percent_define_loc(VARIABLE) to report the location of an invalid
	value for VARIABLE.
	(b4_percent_define_default): Save a special location in
	b4_percent_define_loc(VARIABLE) in case the default value for VARIABLE
	must later be reported as invalid.
	* src/muscle_tab.c (muscle_location_grow, muscle_location_decode): New
	functions.
	(muscle_percent_define_insert): Record the location of VARIABLE in
	muscle percent_define_loc(VARIABLE), and use it to report the previous
	location for a redefinition.
	(muscle_percent_define_flag_if): Update like b4_percent_define_flag_if.
	(muscle_percent_define_default): Update like b4_percent_define_default.
	(muscle_grow_user_name_list): Rename to...
	(muscle_user_name_list_grow): ... this for consistency and use
	muscle_location_grow.
	* src/muscle_tab.h (muscle_location_grow): Prototype.
	* tests/input.at (%define errors): Update expected output.
	* tests/skeletons.at (%define boolean variables: invalid skeleton
	defaults): New test case.

2007-02-28  Joel E. Denny  <jdenny@ces.clemson.edu>

	* src/print.c (lookahead_set, state_default_rule): Remove.
	(print_reductions): Replace state_default_rule invocation with
	equivalent use of yydefact, which was computed in token_actions in
	tables.c.
	(print_results): Don't allocate lookahead_set.

2007-02-27  Paolo Bonzini  <bonzini@gnu.org>

	* data/lalr1.java: Prefix all private members with yy.

2007-02-24  Joel E. Denny  <jdenny@ces.clemson.edu>

	Use YYFPRINTF instead of fprintf where appropriate.  Reported by
	Sebastien Fricker at
	<http://lists.gnu.org/archive/html/bug-bison/2007-02/msg00035.html>.
	* THANKS: Add Sebastien Fricker.
	* data/glr.c, data/push.c, data/yacc.c (yy_reduce_print): Implement.
	* doc/bison.texinfo (Tracing): Make it clearer that YYFPRINTF must
	accept a variable number of arguments.

2007-02-19  Joel E. Denny  <jdenny@ces.clemson.edu>

	* bootstrap: Remove occurrences of .#bootmp from lib/Makefile.

2007-02-13  Juan Manuel Guerrero  <juan.guerrero@gmx.de>

	* djgpp/config.bat: Adjustments concerning the use of autoconf 2.61.
	* djgpp/config.sed: Adjustments concerning the use of autoconf 2.61.
	* djgpp/config.site: Adjustments concerning the use of autoconf 2.61.

2007-02-11  Paul Eggert  <eggert@cs.ucla.edu>

	Undo my 2007-02-07 change, switching back to the c-strcase module
	introduced in the 2007-02-03 change.  Bruno Haible reported that
	the 2007-02-07 change would be dangerous in Turkish if we add a
	language whose name contains "i", since "i" is not lowercase "I"
	in Turkish.
	* bootstrap.conf (gnulib_modules): Add c-strcase.  Remove strcase.
	* lib/.cvsignore: Add c-ctype.c, c-ctype.h, c-strcase.h,
	c-strcasecomp.c, c-strncasecmp.c.  Remove strcasecmp.c, strncasecmp.c.
	* m4/.cvsignore: Remove strcase.m4.
	* src/getargs.c: Revert 2007-02-07 change, as follows.
	Include c-strcase.h.
	(language_argmatch): Use c_strcasecmp rather than strcasecmp.

2007-02-11  Bruno Haible  <bruno@clisp.org>

	Enable the Java related testsuite tests when the only Java compiler
	found is a gcj < 4.3.  Discussed at
	<http://lists.gnu.org/archive/html/bug-bison/2007-02/msg00016.html>.
	* configure.ac (gt_JAVACOMP): Don't specify a target_version.

2007-02-11  Joel E. Denny  <jdenny@ces.clemson.edu>

	* data/Makefile.am: Update copyright date.
	* data/push.c (yypull_parse): Report memory exhaustion and return 2 if
	yypstate_new returns NULL.
	(yypstate_new): Return NULL if malloc does.
	* src/reader.c (packgram): Move translation of rule actions from the
	beginning of packgram to...
	(check_and_convert_grammar): ... here right before packgram is invoked
	so it's easier to write more complete comments, and remove redundant
	code.

2007-02-10  Joel E. Denny  <jdenny@ces.clemson.edu>

	As in semantic actions, make @$ in %initial-action, %destructor, and
	%printer imply %locations.
	* src/scan-code.l (SC_SYMBOL_ACTION): Set locations_flag = true when
	scanning @$.
	* tests/actions.at (AT_CHECK_ACTION_LOCATIONS): New macro supporting...
	(@$ in %initial-action implies %locations,
	@$ in %destructor implies %locations,
	@$ in %printer implies %locations): ... these new test cases.

2007-02-07  Paul Eggert  <eggert@cs.ucla.edu>

	Undo most of the 2007-02-03 change, switching to the strcase module
	now that gnulib strcase has been fixed.
	* bootstrap.conf (gnulib_modules): Remove c-strcase.  Add strcase.
	* lib/.cvsignore: Remove c-ctype.c, c-ctype.h, c-strcase.h,
	c-strcasecomp.c, c-strncasecmp.c.  Add strcasecmp.c, strncasecmp.c
	* m4/.cvsignore: Add strcase.m4.
	* src/getargs.c: Revert 2007-02-03 change, as follows.
	Don't include c-strcase.h.
	(language_argmatch): Use strcasecmp rather than c_strcasecmp.
	strcasecmp has "unspecified behavior" outside the POSIX locale,
	but it works fine in practice if at least one argument is ASCII,
	as is the case in Bison.

2007-02-07  Paolo Bonzini  <bonzini@gnu.org>

	* tests/java.at: Skip tests if only one of javac/java is present.
	Reported by Joel E. Denny.
	* tests/atlocal.in: Adjust copyright years.

2007-02-05  Paolo Bonzini  <bonzini@gnu.org>

	* data/lalr1.java (Stack): Work around old verifiers that disallow
	access to the private fields of an inner class, from the outer class.
	We can make Stack's fields public because user code doesn't have access
	to the instance of Stack used by parse().  Reported by Paul Eggert.

2007-02-03  Paul Eggert  <eggert@cs.ucla.edu>

	* .cvsignore: Add javacomp.sh, javaexec.sh.  Is this really
	the right spot for these files?
	* bootstrap.conf (gnulib_modules): Add c-strcase.
	* lib/.cvsignore: Add c-ctype.c c-ctype.h, c-strcasecomp.c,
	c-strncasecmp.c.
	* src/getargs.c: Include c-strcase.h.
	(language_argmatch): Use c_strcasecmp rather than strcasecmp,
	to avoid unspecified behavior.

2007-02-01  Joel E. Denny  <jdenny@ces.clemson.edu>

	* doc/bison.texinfo (Decl Summary): Correct typo.

2007-01-30  Paolo Bonzini  <bonzini@gnu.org>

	* data/bison.m4 (b4_percent_define_flag_if): Don't treat 0 as false.
	Complain if the value does not match empty, "true" or "false".
	* data/c++.m4: Adjust default definitions of %define variables.
	* data/java.m4: Adjust default definitions of %define variables.
	* doc/bison.texinfo (Decl Summary): Adjust the %define entry according
	to above behavior.
	* tests/input.at (Boolean %define variables): Test new behavior.

2007-01-29  Paolo Bonzini  <bonzini@gnu.org>

	* NEWS: Mention java.
	* TODO: Remove things that are done.
	* bootstrap.conf: Add javacomp-script and javaexec-script.
	* configure.ac: Invoke gt_JAVACOMP and gt_JAVAEXEC.

	* data/Makefile.am: Add new files.
	* data/java-skel.m4: New.
	* data/java.m4: New.
	* data/lalr1.java: New.

	* doc/bison.texinfo: Put "A Complete C++ Example" under
	C++ Parsers.  Add Java Parsers.  Put C++ Parsers and Java Parsers
	under Other Languages.

	* src/getargs.c (valid_languages): Add Java.
	* src/getargs.h (struct bison_language): Update size of string fields.

	* tests/Makefile.am: Add java.at.
	* tests/atlocal.in: Add CONF_JAVA and CONF_JAVAC.
	* tests/java.at: New.
	* tests/testsuite.at: Include it.

2007-01-28  Joel E. Denny  <jdenny@ces.clemson.edu>

	Clean up.
	* src/scan-skel.l (at_directive_perform): Add at_directive_argc and
	at_directive_argv arguments so these no longer have to be global
	variables.  Also, update the implementation for the following changes.
	(fail_for_at_directive_too_many_args,
	fail_for_at_directive_too_few_args): Add at_directive_name argument.
	(at_directive_name): Remove as at_directive_argv[0] will be used for
	this now.
	(AT_DIRECTIVE_ARGC_MAX): Increment to make space in at_directive_argv
	for the directive name.
	(at_directive_argc, at_directive_argv): Make these local within
	skel_lex instead of global.
	(INITIAL): Update directive start action for above changes.
	(SC_AT_DIRECTIVE_ARG): Rename to...
	(SC_AT_DIRECTIVE_ARGS): ... this, and update for above changes.
	(SC_AT_DIRECTIVE_SKIP_WS): Update.
	(scan_skel): Move yylex_destroy to...
	(skel_scanner_free): ... here.
	* tests/skeletons.at (installed skeleton file name): Rename to...
	(installed skeleton file names): ... this.

2007-01-27  Joel E. Denny  <jdenny@ces.clemson.edu>

	* ChangeLog: For changes in doc/bison.texinfo, consistently reference
	node names: say "Table of Symbols" not "Bison Symbols", and say "Decl
	Summary" not "Directives".
	* doc/bison.texinfo (Decl Summary, Calc++ Parser): Cross-reference the
	%code entry in "Decl Summary" rather than the one in "Table of Symbols"
	since the former is now the more complete one.
	(Prologue Alternatives): Likewise and do the same for %defines.
	(Table of Symbols): Add summary of %code, add summary of %define, and
	move full %code documentation to...
	(Decl Summary): ... here for consistency with other entries in these
	sections.
	Move %define entry in order to keep this list alphabetized.
	Reword %define entry a little to put less emphasis on the skeleton
	concept, which most users shouldn't have to think about.

2007-01-26  Paul Eggert  <eggert@cs.ucla.edu>

	Adjust to recent gnulib changes.
	* lib/.cvsignore: Remove stpcpy.h, strndup.h, strnlen.h.
	Add string.h, string_.h, unistd_.h, wchar_.h.
	* m4/.cvsignore: Add gnulib-common.m4, string_h.m4, wchar.m4.
	* src/system.h: Don't include <stpcpy.h>; this is now done by
	<string.h>.

2007-01-23  Paolo Bonzini  <bonzini@gnu.org>

	Simplify implementation of unqualified %code, implement macros for
	uniform treatment of boolean %define flags.  Document %define.
	* data/bison.m4 (b4_percent_define_ifdef, b4_percent_define_flag_if,
	b4_percent_code_ifdef): New.
	(b4_percent_code_get): Map unqualified %code to b4_percent_code().
	* data/c++.m4: Define default value for global_tokens_and_yystype.
	* data/glr.cc: Likewise.
	* data/location.cc: Use b4_percent_define_flag_if.

	* doc/bison.texinfo (Decl Summary): Document %define.

	* src/parse-gram.y (Unqualified %code): Change muscle name to
	b4_percent_code().
	(content.opt): Default to empty.

2007-01-17  Joel E. Denny  <jdenny@ces.clemson.edu>

	Implement support for relative and absolute skeleton file names.
	Discussed starting at
	<http://lists.gnu.org/archive/html/bison-patches/2006-12/msg00071.html>.
	* doc/bison.texinfo (Decl Summary): Document in %skeleton entry.
	(Bison Options): Document in --skeleton entry.
	* src/output.c (output_skeleton): Use strncpy rather than strcpy since
	full_skeleton can't necessarily hold all of pkgdatadir.
	If the specified skeleton file name contains a `/', don't prepend
	pkgdatadir.
	* src/parse-gram.y (prologue_declaration): If the specified skeleton
	file name contains a `/', prepend the grammar file directory.
	* tests/Makefile.am (TESTSUITE_AT): Add skeletons.at.
	* skeletons.at: New file.
	(relative skeleton file names): New test case.
	(installed skeleton file names): New test case.
	* tests/testsuite.at: Include skeletons.at.

	* bootstrap: Update copyright to 2007.

2007-01-17  Paolo Bonzini  <bonzini@gnu.org>

	* bootstrap: Remove occurrences of .#bootmp from the files.

2007-01-17  Akim Demaille  <akim@epita.fr>

	* doc/bison.texinfo (Calc++ Parser): Don't try to alias
	nonterminals.
	Use per-type %printer.

2007-01-17  Joel E. Denny  <jdenny@ces.clemson.edu>

	* NEWS, data/c++-skel.m4, data/c++.m4, data/c-skel.m4, data/c.m4,
	data/glr.c, data/glr.cc, data/lalr1.cc, data/location.cc,
	djgpp/config.site, src/files.c, src/files.h, src/main.c,
	src/muscle_tab.c, src/muscle_tab.h, src/parse-gram.y, src/reader.h,
	src/scan-skel.h, src/scan-skel.l, tests/actions.at, tests/calc.at,
	tests/glr-regression.at, tests/input.at, tests/local.at,
	tests/output.at, tests/torture.at: Update copyright to 2007.

2007-01-16  Akim Demaille  <akim@epita.fr>

	* doc/bison.texinfo (Calc++ Parsing Driver): Let "parse" return an
	error code.
	(Calc++ Scanner): Exit with failure if we can't open the input
	file.
	Accept "-" standing for stdin.
	(Calc++ Top Level): Print the result only if the parsing was
	successful.

2007-01-16  Akim Demaille  <akim@epita.fr>

	* data/lalr1.cc (yy_reduce_print_): Add a missing end-of-line.

2007-01-15  Paolo Bonzini  <bonzini@gnu.org>
	and Joel E. Denny  <jdenny@ces.clemson.edu>

	Clean up %define and %code implementation in M4 some.  Most
	importantly, rename all related macros to be in the b4_percent_define
	and b4_percent_code namespaces.  Also, complete support for `.' in
	%define variable names and %code qualifiers.
	* data/bison.m4 (b4_check_user_names): Check for special
	"SKELETON-NAMESPACE(name)" macros instead of using two nested
	m4_foreach loops.
	(b4_get_percent_define, b4_get_percent_code): Rename to...
	(b4_percent_define_get, b4_percent_code_get): ... these.
	Extend documentation with examples.
	For SKELETON-NAMESPACE (as documented for b4_check_user_names), use
	b4_percent_define_skeleton_variables and
	b4_percent_code_skeleton_qualifiers.
	Expect any value for the %define variable `foo' to be stored in the
	macro named `b4_percent_define(foo)'; expect any %code blocks for the
	qualifier `foo' to be stored in a macro named `b4_percent_code(foo)';
	expect any unqualified %code blocks to be stored in a macro named
	`b4_percent_code_unqualified'.
	Use m4_indir so that %define variable names and %code qualifiers can
	contain `.', which is allowed by the grammar parser.
	(b4_percent_define_default): New macro to set a default value for a
	%define variable.
	(m4_wrap): Update wrapped code, and fix some underquoting.
	(b4_check_user_names_wrap): Update and define outside the m4_wrap.
	Expect grammar uses of %define variables and %code qualifiers to be
	defined in b4_percent_define_user_variables and
	b4_percent_code_user_qualifiers.
	* data/c++.m4: Use b4_percent_define_default rather than
	m4_define_default.  Fix some underquoting.  Skeleton usage of %define
	variable define_location_comparison now implies skeleton usage of
	%define variable filename_type.
	* data/glr.c, data/glr.cc, data/lalr1.cc, data/location.cc,
	data/push.c, data/yacc.c: Update macro names.
	* src/parse-gram.y (prologue_declaration, grammar_declaration): Update
	muscle names.

2007-01-14  Juan Manuel Guerrero  <juan.guerrero@gmx.de>

	DJGPP specific issues.

	* djgpp/config.site: Set ac_cv_path_mkdir to a sane DJGPP specific
	default.  Set gl_cv_absolute_wctype_h to a sane DJGPP specific default.

2007-01-09  Joel E. Denny  <jdenny@ces.clemson.edu>

	* tests/glr-regression.at: Use AT_PARSER_CHECK rather than AT_CHECK to
	run parsers in all tests so that Valgrind is invoked during
	maintainer-check-valgrind.
	(Duplicate representation of merged trees): Free all semantic values.
	(Duplicated user destructor for lookahead): Likewise.

2007-01-09  Joel E. Denny  <jdenny@ces.clemson.edu>

	* tests/local.at (AT_PARSER_CHECK): Add a PRE argument to specify a
	command-line prefix.
	* tests/torture.at (Exploding the Stack Size with Alloca): Stderr is
	ignored, so use that PRE to set --log-fd=1 in VALGRIND_OPTS so we don't
	miss Valgrind messages.
	(Exploding the Stack Size with Malloc): Likewise.

2007-01-09  Joel E. Denny  <jdenny@ces.clemson.edu>

	Ignore YYSTACK_USE_ALLOCA for push parsers since the stacks can't be
	locals.  Reported by Juan Manuel Guerrero at
	<http://lists.gnu.org/archive/html/bug-bison/2007-01/msg00000.html>.
	* data/push.c: Enclose the #ifdef YYSTACK_USE_ALLOCA in b4_push_if.
	Fix some indentation also.
	* tests/torture.at (Exploding the Stack Size with Alloca): Add comment
	explaining this issue.

2007-01-09  Paolo Bonzini  <bonzini@gnu.org>
	and Joel E. Denny  <jdenny@ces.clemson.edu>

	Simplify union and prologue handling, and escape union and lex/parse
	params with digraphs.
	* data/bison.m4 (b4_pre_prologue, b4_post_prologue): Set their default
	values to the empty string since these are no longer guaranteed
	initialized by the front-end.
	* data/glr.c, data/glr.cc, data/lalr1.cc, data/push.c, data/yacc.c: Add
	braces around b4_user_stype since this is no longer done by the
	front-end.
	* src/files.c, src/files.h (pre_prologue_obstack,
	post_prologue_obstack): Remove.
	* src/muscle_tab.c (muscle_pair_list_grow): Don't duplicate header
	comments here.  Use MUSCLE_OBSTACK_SGROW so that values are escaped
	with digraphs.  This fixes lex params and parse params.
	* src/muscle_tab.h (muscle_pair_list_grow): Update comments.
	* src/output.c (prepare): Remove muscle insertion of the prologues.
	(output): Remove freeing of pre_prologue_obstack and
	post_prologue_obstack.
	* src/parse-gram.y (prologue_declaration): Use muscle_code_grow rather
	than prologue_augment for prologue parsing so you don't need prologue
	obstacks.
	(grammar_declaration): For %union RHS, use `braceless' instead of
	"{...}" so that braces are already stripped and code is escaped with
	digraphs.
	* src/reader.c (prologue_augment): Remove.
	(reader): Remove initialization of pre_prologue_obstack and
	post_prologue_obstack.
	* src/reader.h (prologue_augment): Remove.

	* data/c.m4: Remove stray parenthesis.

2007-01-08  Joel E. Denny  <jdenny@ces.clemson.edu>

	Remove quotes from variables names in %define directives and from
	qualifiers in %code directives, and restrict the characters that are
	allowed in them to M4-friendly ones.  For %define, continue to support
	the quoted form as a deprecated feature.  Discussed starting at
	<http://lists.gnu.org/archive/html/bison-patches/2007-01/msg00023.html>.
	* NEWS (2.3a+): Add entry for the change to %define.  Update entry for
	%code.
	* doc/bison.texinfo (Prologue Alternatives): Update.
	(Decl Summary): In %defines entry, update mention of `%code requires'
	and `%code provides'.
	(C++ Location Values): Update %define uses.
	(Calc++ Parser Interface): Likewise.
	(Calc++ Parser): Likewise, and update `%code requires' uses.
	(Table of Symbols): Update %code documentation.
	* src/parse-gram.y (prologue_declaration): For %define variables, use
	`variable' instead of `STRING'.
	(grammar_declaration): For %code qualifiers, use `ID' instead of
	`STRING'.
	(variable): New nonterminal that takes an `ID' or a `STRING'.
	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Update %code
	and %define uses.
	* tests/calc.at (_AT_DATA_CALC_Y): Update %define use.
	* tests/input.at (Reject unused %code qualifiers): Update %code uses.
	(%define errors): Update %define uses.

2007-01-08  Joel E. Denny  <jdenny@ces.clemson.edu>

	* src/parse-gram.y (prologue_declaration): Use MUSCLE_INSERT_STRING
	instead of muscle_insert for %define values so that M4-special
	characters are replaced with digraphs.
	* tests/input.at (%define errors): Extend to check weird values.

2007-01-08  Joel E. Denny  <jdenny@ces.clemson.edu>

	Instead of having skeletons declare all valid %define variables and
	%code qualifiers, provide macros that retrieve the associated values
	and build these lists automatically.  Thus Bison will now warn when a
	variable or qualifier is not used by the skeleton in the current
	invocation regardless of whether it might sometimes be used by that
	skeleton in other invocations.  Also, move all %define value macros to
	the b4_percent_define_ namespace, and remove the %define "NAME" {CODE}
	form, which is replaced by %code.
	* data/bison.m4 (b4_check_for_unrecognized_names): Rename to...
	(b4_check_user_names): ... this, and change the series of valid name
	arguments to a single list argument for names used in the skeleton
	similar to the existing list argument for names used in the grammar.
	Warn instead of complaining.
	(b4_get_percent_define, b4_get_percent_code): New to retrieve %define
	values and %code code, to format %code code properly, and to build
	lists of all %define variables and %code qualifiers used in the
	skeleton: b4_skeleton_percent_define_variables and
	b4_skeleton_percent_code_qualifiers.
	(b4_check_percent_define_variables, b4_check_percent_code_qualifiers):
	Remove, and...
	(m4_wrap): ... m4_wrap b4_check_user_names invocations instead so that
	the skeleton names lists can finish building first.  In place of
	b4_used_percent_define_variables and b4_used_percent_code_qualifiers,
	expect the lists b4_user_percent_define_variables and
	b4_user_percent_code_qualifiers.
	* data/c++.m4: Where setting default values for b4_parser_class_name,
	b4_location_type, b4_filename_type, b4_namespace, and
	b4_define_location_comparison, update their names to the
	b4_percent_define_ namespace.
	* data/glr.c: Don't use b4_check_percent_define_variables and
	b4_check_percent_code_qualifiers.  Use b4_get_percent_code.
	* data/glr.cc, data/lalr1.cc: Likewise, and use b4_get_percent_define.
	(b4_parser_class_name, b4_namespace): Define these using
	b4_get_percent_define for parser_class_name and namespace.
	* data/location.cc: Use b4_get_percent_define.
	* data/push.c: Don't use b4_check_percent_define_variables and
	b4_check_percent_code_qualifiers.  Use b4_get_percent_code.
	* data/yacc.c: Likewise, and don't call m4_exit in
	b4_use_push_for_pull_if or m4_wrap code will never execute.
	* src/muscle_tab.c, src/muscle_tab.h (muscle_grow_used_name_list):
	Rename to...
	(muscle_grow_user_name_list): ... this for consistency with the
	terminology used in bison.m4.
	* src/parse-gram.y (prologue_declaration): Prepend "percent_define_" to
	%define variable names, and rename muscle used_percent_define_variables
	to user_percent_define_variables.
	(grammar_declaration): Rename muscle used_percent_code_qualifiers to
	user_percent_code_qualifiers.
	(content): Remove.
	(content.opt): Replace content RHS with STRING RHS so %define "NAME"
	{CODE} form is no longer accepted.
	* tests/input.at (Reject bad %code qualifiers): Rename to...
	(Reject unused %code qualifiers): ... this, and update test output.
	(%define error): Update test output.

2007-01-07  Joel E. Denny  <jdenny@ces.clemson.edu>

	Check for unrecognized %define variables similar to checking for
	unrecognized %code qualifiers.  Check for redefined %define variables.
	* data/bison.m4 (b4_check_for_unrecognized_names): New macro that
	generalizes...
	(b4_check_percent_code_qualifiers): ... this, which now wraps it.
	(b4_check_percent_define_variables): New, also wraps it.
	* data/glr.c: Unless glr.cc is wrapping glr.c, declare no valid %define
	variables using b4_check_percent_define_variables.
	* data/glr.cc, data/lalr1.cc: Declare the valid %define variables as
	all those exercised in the test suite and all those listed in the
	`Default values' section of c++.m4.  Are there others?
	* data/push.c, data/yacc.c: Declare no valid %define variables.
	* src/muscle_tab.c, src/muscle_tab.h (muscle_find_const): New function,
	similar to muscle_find, but it works even when the muscle stores a
	const value.
	(muscle_grow_used_name_list): New function for constructing the used
	name list muscles that b4_check_for_unrecognized_names requires.
	* src/parse-gram.y (prologue_declaration): Warn if a variable is
	%define'd more than once.  Define the b4_used_percent_define_variables
	muscle with muscle_grow_used_name_list.
	(grammar_declaration): Abbreviate %code code with
	muscle_grow_used_name_list.
	* tests/input.at (%define errors): New.

2007-01-06  Joel E. Denny  <jdenny@ces.clemson.edu>

	Provide warn_at, complain_at, and fatal_at function callbacks to the
	skeletons, and use this for %code qualifier complaints.
	* data/bison.m4 (b4_error_at): New, invoked by...
	(b4_warn_at, b4_complain_at, b4_fatal_at): ... these new macros to wrap
	the skeleton scanner's new @warn_at(...@), @complain_at(...@), and
	@fatal_at(...@) directives.
	(b4_check_percent_code_qualifiers): Rewrite to expect locations for
	qualifiers in b4_used_percent_code_qualifiers and to use
	b4_complain_at.
	* src/location.c, src/location.h (boundary_set_from_string): New global
	function.
	* src/muscle_tab.c, src/muscle_tab.h (muscle_boundary_grow): New global
	function.
	* src/parse-gram.y (grammar_declaration): Add locations for qualifiers
	to b4_used_percent_code_qualifiers.
	* src/scan-skel.l (fail_for_at_directive_too_few_args): New static
	function.
	(AT_DIRECTIVE_ARGC_MAX): Increase for boundary arguments.
	(lineno): Rename to...
	(out_lineno): ... this so I don't misunderstand it again.
	(SC_AT_DIRECTIVE_SKIP_WS): Don't increment out_lineno for newlines
	here; these newlines are in the input but not the output file.
	(SC_AT_DIRECTIVE_ARG): Likewise.  Extract directive execution to...
	(at_directive_perform): ... this new static function, and add handling
	of new @warn_at(...@), @complain_at(...@), and @fatal_at(...@)
	directives.
	* tests/input.at (Reject bad %code qualifiers): Update test output with
	locations and extend.

	* tests/output.at (Output file name: [, Output file name: ]): Remove
	bogus comment about these tests failing.

2007-01-06  Joel E. Denny  <jdenny@ces.clemson.edu>

	Clean up b4_check_percent_code_qualifiers a little.
	* data/bison.m4 (b4_check_percent_code_qualifiers): Expect qualifiers
	in b4_used_percent_code_qualifiers to be double-M4-quoted.  Rewrite
	documentation and add examples.
	* src/parse-gram.y (grammar_declaration): Double-M4-quote those
	qualifiers here.

2007-01-05  Joel E. Denny  <jdenny@ces.clemson.edu>

	Don't use m4_divert since it makes m4_divert_push and m4_divert_pop
	unreliable -- especially when they're hidden inside another macro.
	* data/bison.m4, data/c++-skel.m4, data/c++.m4, data/c-skel.m4,
	data/c.m4: Remove m4_divert(-1).
	* data/glr.c, data/glr.cc, data/lalr1.cc, data/location.cc,
	data/push.c, data/yacc.c: Likewise, and replace m4_divert(0) with
	m4_divert_push(0) and m4_divert_pop(0).
	* src/output.c (output_skeleton): Don't add an m4_divert_push(0) and
	an m4_wrap([m4_divert_pop(0)]) to the M4.  Diversion -1, which is
	pushed and popped by m4sugar, should be first on the stack.

	Provide warn, complain, and fatal function callbacks to the skeletons.
	This provides more flexibility than m4_fatal, improves the error
	message format, and captures messages for translation.  Discussed
	starting at
	<http://lists.gnu.org/archive/html/bison-patches/2006-12/msg00063.html>.
	* data/bison.m4 (b4_error): New, invoked by...
	(b4_warn, b4_complain, b4_fatal): ... these new macros to wrap the
	skeleton scanner's new @warn(...@), @complain(...@), and @fatal(...@)
	directives.  Because these M4 macros might be called when the current
	diversion is -1 or 0, m4_divert_push and m4_divert_pop is used; thus
	the previous removal of uses of m4_divert, which caused trouble.
	(b4_check_percent_code_qualifiers): Use b4_complain instead of
	m4_fatal to report unrecognized %code qualifiers.
	* data/c++-skel.m4: Use b4_complain instead of m4_fatal to report C++
	push parser requests.
	* data/glr.c: Use b4_complain instead of m4_fatal to report
	non-deterministic push parser requests.
	Update @output usage to @output(...@) form.
	* data/glr.cc, data/lalr1.cc: Use b4_fatal instead of m4_fatal to
	report missing %defines.  Update @output usage to @output(...@) form.
	* data/location.cc, data/push.c, data/yacc.c: Update @output usage to
	@output(...@) form.
	* src/main.c (main): Invoke skel_scanner_free.
	* src/scan-skel.h (skel_scanner_free): Prototype new function.
	* src/scan-skel.l (FLEX_NO_OBSTACK): Don't define; we now need the
	obstack_for_string from flex-scanner.h.
	(YY_DECL): Use to declare skel_lex static.
	(decode_at_digraphs): Remove; now handled in the new
	SC_AT_DIRECTIVE_ARG start condition.
	(fail_for_at_directive_too_many_args, fail_for_invalid_at): New static
	functions.
	(at_directive_name, AT_DIRECTIVE_ARGC_MAX, at_directive_argc,
	at_directive_argv): New static globals.
	(INITIAL): Use fail_for_invalid_at.
	Don't parse `@output file_name\n' or `@basename(...@)'.  Instead,
	recognize the start of a generalized `@directive(...@)' form and
	start...
	(SC_AT_DIRECTIVE_ARG): ... this new start condition to parse the
	directive args (using the new obstack_for_string), to decode the
	contained @ diagraphs, and to perform the directive.  It recognizes
	@basename(...@), @warn(...@), @complain(...@), @fatal(...@), and
	@output(...@).
	(SC_AT_DIRECTIVE_SKIP_WS): New start condition started by
	SC_AT_DIRECTIVE_ARG to skip whitespace after the argument delimiter,
	`@,'.
	(scan_skel): Initialize obstack_for_string on the first call.
	(skel_scanner_free): New function to free obstack_for_string.
	* tests/input.at (Reject bad %code qualifiers): Update test output.

2007-01-04  Joel E. Denny  <jdenny@ces.clemson.edu>

	Consolidate the 4 prologue alternative directives (%code, %requires,
	%provides, and %code-top) into a single %code directive with an
	optional qualifier field.  Discussed at
	<http://lists.gnu.org/archive/html/bison-patches/2007-01/msg00012.html>.
	* NEWS (2.3a+): Rewrite the existing entry for the prologue
	alternatives.
	* doc/bison.texinfo (Prologue Alternatives): Update.
	(Decl Summary): Update to %code "requires" and %code "provides".
	(Calc++ Parser): Update to %code "requires".
	(Table of Symbols): Remove entries for %requires, %provides, and
	%code-top.  Rewrite %code entry, and add a %code "QUALIFIER" entry.
	* data/bison.m4 (b4_user_provides, b4_user_requires): Remove as these
	are replaced by b4_percent_code_provides and b4_percent_code_requires,
	which are skeleton-specific.
	(b4_check_percent_code_qualifiers): New.  A skeleton can use this to
	declare what %code qualifiers it supports and to complain if any other
	qualifiers were used in the grammar.
	* data/glr.cc: Update to use b4_user_code([b4_percent_code_requires])
	and b4_user_code([b4_percent_code_provides]) in place of
	b4_user_requires and b4_user_provides.
	* data/glr.c, data/lalr1.cc, data/push.c, data/yacc.c: Likewise.
	Add b4_user_code([b4_percent_code_top]) and
	b4_user_code([b4_percent_code]).
	Invoke b4_check_percent_code_qualifiers.
	* src/parse-gram.y (PERCENT_CODE_TOP, PERCENT_PROVIDES,
	PERCENT_REQUIRES): Remove.
	(grammar_declaration): Remove RHS's for %code-top, %provides, and
	%requires.  Rewrite the %code RHS as the unqualified form defining the
	muscle b4_percent_code.  Add another RHS for the qualified %code form,
	which defines muscles of the form b4_percent_code_QUALIFIER and the
	b4_used_percent_code_qualifiers muscle.
	* src/scan-gram.l (PERCENT_CODE_TOP, PERCENT_PROVIDES,
	PERCENT_REQUIRES): Remove.
	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Update to use
	%code "requires" and %code "provides".
	* tests/input.at (Reject bad %code qualifiers): New.

2007-01-03  Joel E. Denny  <jdenny@ces.clemson.edu>

	Use the new code_props interface for destructors and printers.
	* src/symtab.h (symbol, semantic_type): Remove destructor_location and
	printer_location members, and change the type of the destructor and
	printer members to code_props.
	(symbol_destructor_set, symbol_destructor_get, symbol_printer_set,
	symbol_printer_get, semantic_type_destructor_set,
	semantic_type_printer_set, default_tagged_destructor_set,
	default_tagless_destructor_set, default_tagged_printer_set,
	default_tagless_printer_set): Use code_props in arguments and return
	types in place of char const * and location.
	(symbol_destructor_location_get, symbol_printer_location_get): Remove
	since the locations are now contained in the return of
	symbol_destructor_get and symbol_printer_get.
	* src/output.c (symbol_destructors_output, symbol_printers_output):
	Replace with...
	(symbol_code_props_output): ... this to eliminate duplicate code.
	(output_skeleton): Update to use symbol_code_props_output.
	* src/reader.c (symbol_should_be_used): Update use of
	symbol_destructor_get.
	* src/symlist.c (symbol_list_destructor_set, symbol_list_printer_set):
	Update uses of the various _destructor_set and _printer_set functions.
	* src/symtab.c: (default_tagged_destructor_location,
	default_tagless_destructor_location, default_tagged_printer_location,
	default_tagless_printer_location): Remove since we...
	(default_tagged_destructor, default_tagless_destructor,
	default_tagged_printer, default_tagless_printer): ... change the type
	of these to code_props.
	(symbol_new, semantic_type_new, symbol_destructor_set,
	semantic_type_destructor_set, symbol_destructor_get,
	symbol_printer_set, semantic_type_printer_set, symbol_printer_get,
	symbol_check_alias_consistency, default_tagged_destructor_set,
	default_tagless_destructor_set, default_tagged_printer_set,
	default_tagless_printer_set): Update.
	(symbol_destructor_location_get, symbol_printer_location_get): Remove.
	(SYMBOL_CODE_PRINT): New similar to SYMBOL_ATTR_PRINT but for
	code_props members.
	(symbol_print): Use SYMBOL_CODE_PRINT.

2007-01-03  Joel E. Denny  <jdenny@ces.clemson.edu>

	Use the new code_props interface for rule actions.
	* src/symlist.h (symbol_list): Replace action, action_location, and
	used members with a code_props action_props member.
	* src/reader.c (symbol_should_be_used, grammar_rule_check,
	grammar_midrule_action, grammar_current_rule_merge_set,
	grammar_current_rule_symbol_append, packgram): Update.
	* src/scan-code.h (translate_rule_action): Remove, no longer used.
	* src/scan-code.l (handle_action_dollar): Update.
	(translate_rule_action): Remove, no longer used.
	* src/symlist.c (symbol_list_sym_new, symbol_list_syms_print): Update.

2007-01-02  Joel E. Denny  <jdenny@ces.clemson.edu>

	Use the new code_props interface in parse-gram.y.
	* src/parse-gram.y (prologue_declaration, braceless, epilogue.opt):
	Update all uses of translate_* functions to use the new code_props
	interface and to use gram_scanner_last_string_free and
	code_scanner_last_string_free where possible.
	(grammar_declaration): symbol_list_destructor_set and
	symbol_list_printer_set now perform the translation, so don't do it
	here.  Use gram_scanner_last_string_free where possible.
	* src/scan-code.h, src/scan-code.l (translate_symbol_action,
	translate_code): Remove, no longer used.
	* src/symlist.h, src/symlist.c (symbol_list_destructor_set,
	symbol_list_printer_set): Perform code translation here rather than
	depending on the caller to do so.

	* src/symlist.h (struct symbol_list): Correct some documentation typos.
	* src/scan-gram.h (gram_last_string): Remove declaration.
	* src/scan-gram.l (last_string): Declare it static.

2007-01-02  Joel E. Denny  <jdenny@ces.clemson.edu>

	Encapsulate code properties and related functionality for the various
	destructors, printers, and actions into a code_props structure and
	interface.  This patch merely implements code_props in scan-code.h and
	scan-code.l.  Future patches will rewrite other modules to use it.
	Discussed starting at
	<http://lists.gnu.org/archive/html/bison-patches/2006-11/msg00020.html>.
	* src/location.h (EMPTY_LOCATION_INIT): Define so that it's easier to
	consistently initialize const structs that have an empty location
	field.
	* src/location.c (empty_location): Initialize with EMPTY_LOCATION_INIT
	to ensure consistency.
	* src/scan-code.h (code_props): New structure.
	(code_props_none_init, CODE_PROPS_NONE_INIT, code_props_none): New
	function, macro, and const global variable for initializing a
	code_props with no code.
	(code_props_plain_init, code_props_symbol_action_init,
	code_props_rule_action_init, code_props_translate_code): The rest of
	the new code_props functional interface.  Among other things, the init
	functions set the code_props kind field so that
	code_props_translate_code will know whether to behave like
	translate_symbol_action, translate_rule_action, or translate_code.
	These old translate functions must remain until all other modules are
	updated to use the new code_props interface.
	(code_scanner_last_string_free): New function similar to
	gram_scanner_last_string_free.
	(code_scanner_free): Add documentation.
	* src/scan-code.l: Implement the new interface.
	(code_lex): Make it static, add a code_props* argument, and remove the
	rule argument.
	(last_string): New static global similar to the one in scan-gram.l.
	(SC_RULE_ACTION): Update to use the code_props* argument to code_lex
	instead of rule.
	(SC_SYMBOL_ACTION): For $$, set the is_value_used member of the
	code_props since Bison may one day use this information for destructors
	and printers.
	(<*><<EOF>>): Use STRING_FINISH so that last_string is set.
	(handle_action_dollar): Use symbol_list_n_get and set used flag
	directly since symbol_list_n_used_set is removed.
	(translate_action): Add a code_props* argument and remove the rule,
	action, and location arguments.  Pass the code_props* on to code_lex.
	(translate_rule_action, translate_symbol_action, translate_code):
	Rewrite as wrappers around the new code_props interface.
	* src/symlist.h, src/symlist.c (symbol_list_n_used_set): Remove since
	it would eventually need to break the encapsulation of code_props.

2007-01-01  Joel E. Denny  <jdenny@ces.clemson.edu>

	* etc/.cvsignore: New.

2007-01-01  Joel E. Denny  <jdenny@ces.clemson.edu>

	Add maintainer-push-check to run maintainer-check using push parsing in
	place of pull parsing where available.
	* Makefile.am (maintainer-push-check): New.
	* data/bison.m4 (b4_use_push_for_pull_if): New.
	* data/push.c: Redefine b4_push_if and b4_use_push_for_pull_if
	appropriately based on their existing values.
	(yypush_parse): Don't print push-parser-specific diagnostics if push
	parsing is being used in place of pull parsing.
	* data/yacc.c: If push parsing should replace pull parsing, redirect to
	push.c.
	* src/output.c (prepare): Check BISON_USE_PUSH_FOR_PULL environment
	variable, and insert b4_use_push_for_pull_flag into muscles.
	* tests/Makefile.am (maintainer-push-check): New.

2006-12-31  Joel E. Denny  <jdenny@ces.clemson.edu>

	* data/push.c (yypush_parse): Set yynew = 1 at the end of a parse
	(whether successful or failed) so that yypush_parse can be invoked
	again to start a new parse using the same yypstate.
	* tests/torture.at (AT_DATA_STACK_TORTURE): For push mode, extend to
	check multiple yypull_parse invocations on the same yypstate.  For pull
	mode, extend to check multiple yyparse invocations.
	(Exploding the Stack Size with Alloca): Extend to try with
	%push-pull-parser.
	(Exploding the Stack Size with Malloc): Likewise.

	* tests/calc.at (Simple LALR Calculator): Don't specify
	%skeleton "push.c" since %push-pull-parser implies that now.
	* tests/headers.at (export YYLTYPE): Don't check for the push
	declarations.  Otherwise, this test case can't be used to see if push
	mode can truly emulate pull mode.
	* tests/input.at (Torturing the Scanner): Likewise.
	* tests/local.at (AT_YACC_OR_PUSH_IF, AT_PUSH_IF): Remove.
	(AT_YYERROR_SEES_LOC_IF): Rather than AT_YACC_OR_PUSH_IF, use
	AT_YACC_IF, which now includes the case of push mode since %skeleton
	need not be used for push mode.  This will be more intuitive once
	push.c is renamed to yacc.c.

2006-12-31  Joel E. Denny  <jdenny@ces.clemson.edu>

	For push mode, convert yyparse from a macro to a function, invoke yylex
	instead of passing a yylexp argument to yypull_parse, and don't
	generate yypull_parse or yyparse unless %push-pull-parser is declared.
	Discussed starting at
	<http://lists.gnu.org/archive/html/bison-patches/2006-12/msg00163.html>.
	* data/bison.m4 (b4_pull_if): New.
	* data/c.m4 (b4_identification): Define YYPULL similar to YYPUSH.
	* data/push.c: Improve M4 quoting a little.
	(b4_generate_macro_args, b4_parenthesize): Remove.
	(yyparse): If there's a b4_prefix, #define this to b4_prefix[parse]
	any time a pull parser is requested.
	Don't #define this as a wrapper around yypull_parse.  Instead, when
	both push and pull are requested, make it a function that does that
	same thing.
	(yypull_parse): If there's a b4_prefix, #define this to
	b4_prefix[pull_parse] when both push and pull are requested.
	Don't define this as a function unless both push and pull are
	requested.
	Remove the yylexp argument and hard-code yylex invocation instead.
	* etc/bench.pl.in (bench_grammar): Use %push-pull-parser instead of
	%push-parser.
	* src/getargs.c (pull_parser): New global initialized to true.
	* getargs.h (pull_parser): extern it.
	* src/output.c (prepare): Insert pull_flag muscle.
	* src/parse-gram.y (PERCENT_PUSH_PULL_PARSER): New token.
	(prologue_declaration): Set both push_parser and pull_parser = true for
	%push-pull-parser.  Set push_parser = true and pull_parser = false for
	%push-parser.
	* src/scan-gram.l: Don't accept %push_parser as an alternative to
	%push-parser since there's no backward-compatibility concern here.
	Scan %push-pull-parser.
	* tests/calc.at (Simple LALR(1) Calculator): Use %push-pull-parser
	instead of %push-parser.
	* tests/headers.at (export YYLTYPE): Make yylex static, and don't
	prototype it in the module that calls yyparse.
	* tests/input.at (Torturing the Scanner): Likewise.
	* tests/local.at (AT_PUSH_IF): Check for %push-pull-parser as well.

2006-12-26  Joel E. Denny  <jdenny@ces.clemson.edu>

	Update etc/bench.pl.  Optimize push mode a little (the yyn change
	deserves most of the credit).
	* Makefile.am (SUBDIRS): Add etc subdirectory.
	* configure.ac (AC_CONFIG_FILES): Add etc/bench.pl and etc/Makefile.
	* data/push.c (b4_declare_parser_state_variables): Move yyn, yyresult,
	yytoken, yyval, and yyloc declarations to...
	(yyparse or yypush_parse): ... here to improve performance.  For
	yypush_parse invocations after the first, be sure to assign yyn its old
	value again.
	(yypstate_new): Don't bother initializing the yyresult field since the
	initial value isn't used.
	(yyn, yyresult, yytoken, yyval, yyloc): For each NAME in this list,
	remove the #define that, in push mode, set it to yyps->NAME.
	* etc/Makefile.am: New.
	* etc/bench.pl: Remove and build it instead from...
	* etc/bench.pl.in: ... this new file.  Use @abs_top_builddir@ to invoke
	"tests/bison" from the build directory by default rather than just
	invoking "bison" from $PATH.
	(calc_grammar): Update push parser code: don't declare yylval globally,
	don't define yyparse_wrapper, and don't #define yyparse.
	(bench_grammar): Update to check all working combinations of yacc.c,
	push.c, impure, pure, pull, and push.

2006-12-25  Joel E. Denny  <jdenny@ces.clemson.edu>

	For push mode, add pull wrappers around yypush_parse.
	* data/push.c: (b4_generate_macro_args, b4_parenthesize): New macros.
	(yypull_parse): New function wrapping yypush_parse.
	(yyparse): New #define wrapping yypull_parse.
	* tests/calc.at (_AT_DATA_CALC_Y): Call yyparse even when %push-parser
	is declared.
	* tests/headers.at (export YYLTYPE): Make yylex global.  For push mode,
	prototype yylex in the module that calls yyparse, and don't prototype
	yyparse there.  Otherwise, the yyparse expansion won't compile.
	* tests/input.at (Torturing the Scanner): Likewise.

2006-12-25  Joel E. Denny  <jdenny@ces.clemson.edu>

	Enable push parsers to operate in impure mode.  Thus, %push-parser no
	longer implies %pure-parser.  The point of this change is to move
	towards being able to test the push parser code by running the entire
	test suite as if %push-parser had been declared.
	* data/push.c (yypush_parse): For impure mode, remove the
	yypushed_char, yypushed_val, and yypushed_loc arguments.
	Instead, declare these as local variables initialized to the global
	yychar, yylval, and yylloc.
	For the first yypush_parse invocation only, restore the initial values
	of these global variables when it's time to read a token since they
	have been overwritten.
	* src/parse-gram.y (prologue_declaration): Don't set pure_parser for
	%push-parser.
	* tests/calc.at (Simple LALR(1) Calculator): Always declare
	%pure-parser along with %push-parser since this test case was designed
	for pure push parsers.
	* tests/local.at (AT_PURE_OR_PUSH_IF): Remove unused.
	(AT_YACC_OR_PUSH_IF): New.
	(AT_YYERROR_SEES_LOC_IF): Fix enough that the test suite passes, but
	add a note that it's still wrong for some cases (as it has been for a
	while).
	(AT_PURE_LEX_IF): Use AT_PURE_IF instead of AT_PURE_OR_PUSH_IF since
	%push-parser no longer implies %pure-parser.

2006-12-20  Joel E. Denny  <jdenny@ces.clemson.edu>

	Remove some unnecessary differences between the pull parser code and
	the push parser code.  This patch enables yynerrs in push mode.
	* data/push.c: Reformat M4 a little.
	(b4_yyerror_range): Remove and convert all uses to just yyerror_range.
	(b4_declare_scanner_communication_variables): Don't omit yynerrs just
	because push mode is on.  Instead, if pure mode is on, move yynerrs
	to...
	(b4_declare_parser_state_variables): ... here.
	(yynerrs, yyerror_range): For push mode, #define each NAME in this list
	to yyps->NAME so it can be used in yypush_parse.
	(yypush_parse): Don't omit uses of yynerrs in push mode.

2006-12-20  Joel E. Denny  <jdenny@ces.clemson.edu>

	Fix bug such that the first pushed token's value and location are
	sometimes overwritten (sometimes by %initial-action) before being used.
	* data/push.c (yypush_parse): Rename arguments yynchar, yynlval, and
	yynlloc to yypushed_char, yypushed_val, and yypushed_loc for clarity.
	For the first yypush_parse invocation, initialize yychar to YYEMPTY to
	more closely mimic the pull parser logic.
	Don't copy the pushed token to yychar, yylval, and yylloc until it's
	time to read a token, which is after any initialization of yylval and
	yylloc.
	(gottoken): Rename label to...
	(yyread_pushed_token): ... for clarity and to avoid infringing on the
	user namespace.

2006-12-20  Joel E. Denny  <jdenny@ces.clemson.edu>

	Rearrange initialization of the parser state variables so that the
	skeleton doesn't have to have a copy for pull mode and another for push
	mode.  This patch also fixes at least a bug such that yylloc was not
	initialized (with b4_location_initial_line and
	b4_location_initial_column) upon calling yypush_parse.  However, that
	initialization now overwrites the first token's location;
	%initial-action assigning @$ already did the same thing, and both bugs
	will be fixed in a later patch.
	* data/push.c (b4_yyssa): Remove and convert all uses to just yyssa.
	(b4_declare_parser_state_variables): Remove initialization of yytoken,
	yyss, yyvs, yyls, and yystacksize.
	(yypstate_new): Remove initialization of some yypstate fields: yystate,
	yyerrstatus, yytoken, yyss, yyvs, yyls, yystacksize, yyssp, yyvsp, and
	yylsp.
	(yyssa, yyvsa, yylsa): For push mode, #define each NAME in this list to
	yyps->NAME so it can be used in yypush_parse.
	(yyparse or yypush_parse): For yypush_parse, don't print the
	"Starting parse" diagnostic for invocations after the first.
	Add initialization of yytoken, yyss, yyvs, yyls, and yystacksize; for
	yypush_parse, only do it for the first invocation.
	Allow yystate, yyerrstatus, yyssp, yyvsp, yylsp, and yylloc
	initialization to occur in yypush_parse but only on the first
	invocation.

2006-12-19  Joel E. Denny  <jdenny@ces.clemson.edu>

	* data/push.c: Add CPP guards around push parser declarations in both
	the header and the code file.
	In the code file, move the push parser declarations to the same place
	they appear in the header file.
	Clean up the M4 some, especially the inconsistent underquoting in
	some b4_c_function_def and b4_c_function_decl uses.

2006-12-19  Joel E. Denny  <jdenny@ces.clemson.edu>

	Encapsulate the push parser state variables into an M4 macro so the
	push skeleton doesn't have to list them again for pull mode's yyparse.
	For push mode, remove yypush_parse's local equivalents of these
	variables to eliminate unnecessary copying between the two sets at
	run-time.  This patch also fixes at least a bug related to multiple
	%initial-action invocations in push mode.
	* data/push.c (b4_declare_parser_variables): Rename to...
	(b4_declare_scanner_communication_variables): ... this for clarity and
	update both uses.
	(b4_declare_yyparse_variables): Remove and move its contents to the one
	spot where it was invoked.
	(b4_declare_parser_state_variables): New macro containing the parser
	state variables required by push mode.
	(struct yypstate): Replace all fields but yynew with
	b4_declare_parser_state_variables.
	(yystate, yyn, yyresult, yyerrstatus, yytoken, yyss, yyssp, yyvs,
	yyvsp, yyls, yylsp, yystacksize, yyval, yyloc): For push mode, #define
	each NAME in this list to yyps->NAME so it can be used in yypush_parse.
	(yyparse or yypush_parse): For yyparse in pull mode, replace local
	parser state variable declarations with
	b4_declare_parser_state_variables.
	Don't initialize parser state variables when calling yypush_parse since
	yypstate_new already does that.
	Invoke the user's initial action only upon the first yypush_parse
	invocation.
	Remove all code that copies between the local parser state variables
	and the yypstate.

2006-12-19  Joel E. Denny  <jdenny@ces.clemson.edu>

	* data/push.c (union yyalloc): Rename yyss, yyvs, and yyls fields to
	prevent a name collision in a future patch where these names will
	sometimes be #define'd.
	(YYSTACK_RELOCATE): Add an argument to select a union yyalloc field
	since it no longer has the same name as the existing argument.
	(yyparse or yypush_parse): Update all uses of YYSTACK_RELOCATE.

2006-12-19  Paolo Bonzini  <bonzini@gnu.org>
	and Joel E. Denny  <jdenny@ces.clemson.edu>

	* doc/bison.texinfo (Decl Summary): In the %language entry, mention
	that the argument is case-insensitive, and there's no `=' here.
	For the %skeleton entry, mention that %language is better.
	(Bison Options): Likewise for --language and --skeleton.  Move the
	--skeleton entry so that the `Tuning the parser' section is sorted
	alphabetically on long options.
	(C++ Bison Interface): Don't use the word skeleton.  Don't explain the
	%language directive in detail here; cross-reference the %language
	documentation instead.
	(Calc++ Parser): Use `%require "@value{VERSION}"' rather than
	`%require "2.3b"' so that the example is always up-to-date.
	(Table of Symbols): Add entries for %language and %skeleton.
	* examples/extexi (normalize): Instead of replacing every %require
	argument with the current Bison version, just substitute for
	`@value{VERSION}'.  This guarantees that we're testing what actually
	appears in the documentation.
	* examples/calc++/Makefile.am ($(calc_extracted)): Use `$(VERSION)'
	rather than `@VERSION@'.

2006-12-18  Paul Eggert  <eggert@cs.ucla.edu>

	* NEWS: Reword the %language news a bit, and put it earlier.

	* src/getargs.c (skeleton_arg): Last arg is now location const *.
	Rewrite to simplify the logic.
	(language_argmatch): Likewise.
	(program_name): We now own this var.
	* src/getargs.h (struct bison_language): Use char[] rather than
	const char *.

	* doc/bison.texinfo (Decl Summary, Bison Options): Don't claim
	Java is supported.
	* src/complain.c (program_name): Remove decl; no longer needed.
	* src/main.c (program_name): Remove; now belongs to getargs.

2006-12-18  Paolo Bonzini  <bonzini@gnu.org>

	* NEWS: Document %language.

	* data/Makefile.am (dist_pkgdata_DATA): Add c-skel.m4, c++-skel.m4.

	* data/c-skel.m4, data/c++-skel.m4: New files.
	* data/glr.c: Complain on push parsers.

	* doc/bison.texinfo (C++ Parser Interface): Prefer %language
	over %skeleton.
	(Decl Summary): Document %language and %skeleton.
	(Command line): Document -L.

	* examples/extexi: Rewrite %require directive.
	* examples/calc++/Makefile.am: Pass VERSION to extexi.

	* src/files.c (compute_exts_from_gc): Look in language structure
	for .y extension.
	(compute_file_name_parts): Check whether .tab should be added.
	* src/getargs.c (valid_languages, skeleton_prio, language_prio):
	(language, skeleton_arg, language_argmatch): New.
	(long_options): Add --language.
	(getargs): Use skeleton_arg, add -L/--language.
	* src/getargs.h: Include location.h.
	(struct bison_language, language, skeleton_arg, language_argmatch): New.
	* src/output.c (prepare): Pick default skeleton from struct language.
	Don't dispatch C skeletons here.
	* src/parse-gram.y (PERCENT_LANGUAGE): New.
	(prologue_declaration): Add "%language" rule, use skeleton_arg.
	* src/scan-gram.l ("%language"): New rule.

	* tests/calc.at: Test %skeleton and %language.
	* tests/local.at (AT_SKEL_CC_IF): Look for %language.
	(AT_GLR_IF): Look for %skeleton "glr.cc".
	(AT_LALR1_CC_IF, AT_GLR_CC_IF): Rewrite.
	(AT_YACC_IF): Reject %language.

2006-12-18  Paul Eggert  <eggert@cs.ucla.edu>

	* src/symtab.h (struct semantic_type): Remove the tag 'semantic_type',
	since it wasn't used; only the typedef name 'semantic_type' is needed.
	Also, omit trailing white space.

	* bootstrap: Sync from coreutils.
	(gnulib_extra_files): Add build-aux/announce.gen.
	(slurp): Adjust .gitignore files like .cvsignore files.
	* build-aux/announce-gen: Remove from CVS, since bootstrap
	now creates this.

2006-12-16  Joel E. Denny  <jdenny@ces.clemson.edu>

	Make %push-parser imply %pure-parser.  This fixes several bugs; see
	<http://lists.gnu.org/archive/html/bison-patches/2006-12/msg00148.html>.
	* src/parse-gram.y (prologue_declaration): For %push-parser, also set
	pure_parser = true.
	* data/push.c: Don't bother testing b4_push_if when deciding whether
	to expand b4_declare_parser_variables globally.
	(yypush_parse): Likewise in here.

	* data/push.c (yypush_parse): Add b4_parse_param to arguments.
	(yy_reduce_print): Reformat M4 for readability.

2006-12-15  Bob Rossi  <bob@brasko.net>
	and Joel Denny  <jdenny@ces.clemson.edu>

	* data/push.c (yypstate): Add typedef, and update all uses of
	struct yypstate to just yypstate.
	* tests/calc.at (_AT_DATA_CALC_Y): Update here as well.

2006-12-14  Bob Rossi  <bob@brasko.net>

	* data/push.c (yypush_parse): Declare prototype regardless of
	%locations option.

2006-12-14  Bob Rossi  <bob@brasko.net>

	* data/push.c (yyparse): Remove the prototype and the #define when in
	push-parser mode.

2006-12-13  Bob Rossi  <bob@brasko.net>

	* data/push.c (yypstate_init): Rename to...
	(yypstate_new): ... this and use b4_c_function_def.
	(yypstate_delete): New.
	(yypush_parse): Change parameters yynval and yynlloc to be const.
	* tests/calc.at (_AT_DATA_CALC_Y): Use new yypstate_new and
	yypstate_delete functions.

2006-12-13  Joel E. Denny  <jdenny@ces.clemson.edu>

	* configure.ac (AC_PREREQ): Require Autoconf 2.61 because of our
	strange test case titles.  Reported by Bob Rossi.

2006-12-13  Paul Eggert  <eggert@cs.ucla.edu>

	* TODO: Add pointer to Sylvain Schmitz's work on static detection
	of potential ambiguities in GLR grammers.

2006-12-12  Joel E. Denny  <jdenny@ces.clemson.edu>

	* tests/testsuite.at (AT_CHECK): When checking if $1 starts with
	`bison ', use m4_index instead of m4_substr since chopping up a string
	containing M4-special characters causes problems here.

	Fix a couple of bugs related to special characters in user-specified
	file names, and make it easier for skeletons to compute output file
	names with the same file name prefix as Bison-computed output file
	names.
	* data/glr.cc, data/push.c, data/yacc.c: In @output, use
	b4_parser_file_name and b4_spec_defines_file instead of
	@output_parser_name@ and @output_header_name@, which are now redundant.
	* data/glr.c, data/lalr1.cc: Likewise.  Also, in header #include's, use
	b4_parser_file_name, b4_spec_defines_file, and the new
	@basename(FILENAME@) instead of @output_parser_name@ and
	@output_header_name@, which inappropriately escaped the file names as
	C string literals.
	* src/files.c (all_but_ext): Remove static qualifier.
	(compute_output_file_names): Move `free (all_but_ext)' to...
	(output_file_names_free): ... here since all_but_ext is needed later.
	* src/files.h (all_but_ext): Extern.
	* src/muscle_tab.h (MUSCLE_INSERT_STRING_RAW): New macro that does
	exactly what MUSCLE_INSERT_STRING used to do.
	(MUSCLE_INSERT_STRING): Use MUSCLE_OBSTACK_SGROW so that M4-special
	characters are escaped properly.
	* src/output.c (prepare): Define muscle file_name_all_but_ext as
	all_but_ext.
	For pkgdatadir muscle, maintain previous functionality by using
	MUSCLE_INSERT_STRING_RAW instead of MUSCLE_INSERT_STRING.  The problem
	is that b4_pkgdatadir is used inside m4_include in the skeletons, so
	digraphs would never be expanded.  Hopefully no one has M4-special
	characters in his Bison installation path.
	* src/scan-skel.l: Don't parse @output_header_name@ and
	@output_parser_name@ anymore since they're now redundant.
	In @output, use decode_at_digraphs.
	Parse a new @basename command that invokes last_component.
	(decode_at_digraphs): New.
	(BASE_QPUTS): Remove unused.
	* tests/output.at (AT_CHECK_OUTPUT_FILE_NAME): New macro.
	(Output file name): New tests.

2006-12-09  Joel E. Denny  <jdenny@ces.clemson.edu>

	Warn about output files that are generated by the skeletons and that
	conflict with other output files.
	* data/glr.c: Don't generate the header file here when glr.cc does.
	* src/files.c (file_names, file_names_count): New static globals.
	(compute_output_file_names): Invoke output_file_name_check for files
	not generated by the skeletons and remove existing checks.
	(output_file_name_check): New function that warns about conflicting
	output file names.
	(output_file_names_free): Free file_names.
	* src/files.h (output_file_name_check): Declare.
	* src/scan-skel.l: Invoke output_file_name_check for files generated by
	the skeletons.
	* tests/output.at (AT_CHECK_CONFLICTING_OUTPUT): New.
	(Conflicting output files): New tests.

2006-12-09  Ralf Wildenhues  <Ralf.Wildenhues@gmx.de>

	* doc/bison.texinfo: Fix a couple of typos.

2006-12-08  Bob Rossi  <bob@brasko.net>

	* data/push.c: (yypvarsinit, yypvars, struct yypvars, yypushparse):
	Rename to...
	(yypstate_init, yypstate, struct yypstate, yypush_parse): ... these and
	update all uses.
	(b4_yyssa, b4_yyerror_range, yypstate_init): Rename pv to yyps.
	(yypush_parse): Rename yypvars argument to yyps and remove redundant
	local pv.
	(yypstate_init, yypush_parse): Declare in Bison-generated header file.
	* tests/calc.at (_AT_DATA_CALC_Y): Use newly named functions.

2006-12-07  Bob Rossi  <bob@brasko.net>
	and Joel Denny  <jdenny@ces.clemson.edu>

	* data/push.c (yypvarsinit): Change return type from void* to struct
	yypvars*. No longer cast to void* on return.
	(struct yypvars): Remove yylen since it need not be remembered between
	yypushparse invocations.
	(yypushparse): Don't copy between yylen and pv->yylen.

2006-12-05  Bob Rossi  <bob@brasko.net>

	* data/push.c (yychar_set, yylval_set, yylloc_set): Delete.
	(yypushparse): Add yynchar, yynlval, yynlloc parameters.
	(b4_declare_parser_variables): Do not declare yynerrs for push mode.
	(struct yypvars): Remove b4_declare_parser_variables.
	(yypvarsinit): Remove init code for removed variables.
	(global scope): Do not declare b4_declare_parser_variables if
	push or pure mode.
	(yypushparse): Add b4_declare_parser_variables.
	Init new local variables, and remove init code for removed
	yypvars variables.
	(yyparse): Delete.
	* tests/calc.at (_AT_DATA_CALC_Y): Call yypushparse for push mode
	and yyparse for other modes.
	(AT_CHECK_CALC_LALR): Added '%skeleton "push.c"' for push tests.
	* tests/local.at (AT_PUSH_IF, AT_PURE_OR_PUSH_IF): Added.
	(AT_YYERROR_SEES_LOC_IF): push-parser makes this false.
	(AT_PURE_LEX_IF): True if pure or push parser.

2006-12-05  Joel E. Denny  <jdenny@ces.clemson.edu>

	Document Yacc prologue alternatives and default %destructor's and
	%printer's as experimental.  Don't mention Java yet.  Discussed at
	<http://lists.gnu.org/archive/html/bison-patches/2006-12/msg00002.html>.
	* NEWS (2.3a+): Say they're experimental.  Remove any mention of Java.
	(2.3a): Annotate this entry to say the old forms of these features were
	also experimental.
	* doc/bison.texinfo (Prologue Alternatives, Freeing Discarded Symbols,
	Table of Symbols): Say they're experimental.  Comment out any mention
	of Java (we'll want this back eventually).

2006-12-01  Joel E. Denny  <jdenny@ces.clemson.edu>

	Support a file name argument to %defines.  Deprecate `=' in
	%file-prefix, %name-prefix, and %output.  Discussed at
	<http://lists.gnu.org/archive/html/help-bison/2006-09/msg00001.html>.
	* NEWS (2.3a+): Mention.
	* doc/bison.texinfo (Decl Summary, Table of Symbols): Add entry for new
	form of %defines, and remove `=' from entries for %file-prefix,
	%name-prefix, and %output.
	* src/parse-gram.y (prologue_declaration): Implement.
	* tests/calc.at (Simple LALR Calculator, Simple GLR Calculator, Simple
	LALR1 C++ Calculator, Simple GLR C++ Calculator): Remove the `=' from
	all but one occurrence of %name-prefix.
	* tests/headers.at (export YYLTYPE): Remove the `=' from %name-prefix.
	* tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Likewise.
	* tests/output.at (AT_CHECK_OUTPUT): Remove the `=' from all but one
	occurrence of each of %file-prefix and %output.  Add check for %defines
	with argument.
	* tests/reduce.at (Useless Terminals, Useless Nonterminals,
	Useless Rules, Reduced Automaton, Underivable Rules, Empty Language):
	Remove the `=' from %output.

2006-11-21  Joel E. Denny  <jdenny@ces.clemson.edu>

	Don't escape $ in test case titles since Autoconf 2.61 now does that
	correctly.
	* tests/actions.at (Default %printer and %destructor are not for error
	or $undefined): Here.
	(Default %printer and %destructor are not for $accept): Here.
	* tests/input.at (Invalid $n and @n): Here.

2006-11-20  Joel E. Denny  <jdenny@ces.clemson.edu>

	Rename <!> to <>.  Discussed starting at
	<http://lists.gnu.org/archive/html/bison-patches/2006-11/msg00039.html>.
	* NEWS (2.3a+): Update.
	* doc/bison.texinfo (Freeing Discarded Symbols, Table of Symbols):
	Update.
	* src/parse-gram.y (TYPE_TAG_NONE, generic_symlist_item): Implement.
	* src/scan-gram.l (INITIAL): Implement.
	* src/symlist.c (symbol_list_default_tagless_new): Update comment.
	* src/symlist.h (symbol_list, symbol_list_default_tagless_new): Update
	comment.
	* tests/actions.at (Default tagless %printer and %destructor,
	Default tagged and per-type %printer and %destructor,
	Default %printer and %destructor are not for error or $undefined,
	Default %printer and %destructor are not for $accept,
	Default %printer and %destructor for mid-rule values): Update.
	* tests/input.at (Default %printer and %destructor redeclared,
	Unused values with default %destructor): Update.

2006-11-17  Joel E. Denny  <jdenny@ces.clemson.edu>

	Don't let %prec take a nonterminal.
	* src/reader.c (grammar_current_rule_prec_set): Make the %prec symbol a
	token.
	* tests/input.at (%prec takes a token): New test checking that %prec
	won't take a nonterminal.

2006-11-10  Joel E. Denny  <jdenny@ces.clemson.edu>

	* tests/testsuite.at (AT_CHECK): Don't miss an exit value of 0 because
	it was double-quoted.
	* src/Makefile.am (YACC): Use --warnings=all,error so that Bison's own
	grammar is maintained with Bison's highest standards.
	* src/getargs.c: Fix some typos in Doxygen comments.

2006-11-10  Joel E. Denny  <jdenny@ces.clemson.edu>

	Fix memory leaks in scanners generated by at least Flex 2.5.9 and
	later.  Reported by Paul Eggert in
	<http://lists.gnu.org/archive/html/bison-patches/2006-11/msg00014.html>.
	* src/flex-scanner.h (yylex_destroy): Define for Flex before 2.5.9.
	* src/scan-code.l (translate_action): Don't bother invoking
	yy_delete_buffer (YY_CURRENT_BUFFER) before creating the first buffer.
	(code_scanner_free): Instead of invoking
	yy_delete_buffer (YY_CURRENT_BUFFER) directly, invoke yylex_destroy,
	which frees more.
	* src/scan-gram.l (gram_scanner_free): Likewise.
	* src/scan-skel.l (scan_skel): Likewise.

2006-11-09  Joel E. Denny  <jdenny@ces.clemson.edu>

	* src/files.c (tr): Change return type to void.
	* src/muscle_tab.c (muscle_insert): Free storage in case muscle_grow
	has been called previously for the same key.
	(muscle_find): Return storage instead of value so that
	--enable-gcc-warnings doesn't produce warnings that the return discards
	const.  aver that the value and storage are the same since storage
	could potentially be NULL when value is not.
	* tests/testsuite.at (AT_CHECK): Treat an unspecified exit value the
	same as 0.

2006-11-08  Paul Eggert  <eggert@cs.ucla.edu>

	* bootstrap.conf (excluded_files): Exclude m4/codeset.m4 (undoing
	the earlier change today), m4/intl.m4, m4/intldir.m4.  This gives
	us a slightly cleaner distribution, and also works.
	* m4/.cvsignore: Add inline.m4, wint_t.m4 to accommodate recent
	gnulib changes.

2006-11-08  Joel E. Denny  <jdenny@ces.clemson.edu>
	and Paul Eggert  <eggert@cs.ucla.edu>

	Don't let Bison leak memory except when it complains.
	* src/files.h (parser_file_name, spec_verbose_file, spec_graph_file):
	(spec_defines_file, dir_prefix): Now char *, not const char *,
	since they are freed.
	* src/files.c: Likewise.
	(all_but_ext, all_but_tab_ext, src_extension, header_extension):
	Likewise.
	(tr): Now operates in-place.  All uses changed.
	(compute_exts_from_gf, compute_exts_from_src): Don't leak temporary
	values.
	(compute_file_name_parts, compute_output_file_names): Don't store
	read-only data in variables that will be freed.
	(compute_output_file_names): Free all_but_ext, all_but_tab_ext,
	src_extension, and header_extension.
	(output_file_names_free): New public function to free
	spec_verbose_file, spec_graph_file, spec_defines_file,
	parser_file_name, and dir_prefix.
	* src/getargs.c (getargs): Don't store read-only data in variables that
	will be freed.
	* src/main.c (main): Invoke output_file_names_free, code_scanner_free
	(which previously existed but was unused), and quotearg_free.
	* src/muscle_tab.h (muscle_insert): value arg is now a `char const *'.
	* src/muscle_tab.c: Likewise.
	(muscle_entry): Make the value char const *,
	and add a new storage member that is char * and can be freed.
	(muscle_entry_free): New private function.
	(muscle_init): Use it instead of free.
	(muscle_insert, muscle_grow): Update and use new storage member.
	(muscle_code_grow): Free the string passed to muscle_grow
	since it's not needed anymore.
	* src/parse-gram.y (%union): Make `chars' member a `char const *', and
	add a new `char *code' member.
	("{...}"): Declare semantic type as code.
	* src/scan-code.h (translate_rule_action):
	(translate_symbol_action, translate_code, translate_action): Return
	`char const *' rather than `char *' since external code should not free
	these strings.
	* src/scan-code.l: Likewise.
	* src/scan-gram.l (<SC_BRACED_CODE>): Use val->code for BRACED_CODE,
	which is "{...}" in the parser.
	* tests/Makefile.am (maintainer-check-valgrind): Set
	VALGRIND_OPTS='--leak-check=full --show-reacheable=yes' before invoking
	Valgrind.
	* tests/calc.at (_AT_DATA_CALC_Y): fclose the FILE* so Valgrind doesn't
	complain.
	* tests/testsuite.at (AT_CHECK): Redefine so that running Bison and
	expecting a non-zero exit status sets --leak-check=summary and
	--show-reachable=no for Valgrind.  Bison unabashedly leaks memory in
	this case, and we don't want to hear about it.

2006-11-08  Paul Eggert  <eggert@cs.ucla.edu>

	* bootstrap (runtime-po/Makevars): Derive from po/Makevars
	instead of from the template, to simplify configuration a bit.
	* bootstrap.conf (excluded_files): Don't exclude m4/codeset.m4
	and m4/wint_t.m4, as they are needed with the latest gnulib.

2006-10-31  Joel E. Denny  <jdenny@ces.clemson.edu>

	Disable unset/unused mid-rule value warnings by default, and recognize
	--warnings=midrule-values to enable them.  Discussed starting at
	<http://lists.gnu.org/archive/html/help-bison/2006-10/msg00030.html>.
	* NEWS (2.3a+): Mention.
	* src/getargs.c, src/getargs.h (warnings_args, warnings_types, enum
	warnings): Add entry for midrule-values subargument.
	* src/reader.c (symbol_should_be_used): Don't return true just because
	the value is a set/used mid-rule value unless
	--warnings=midrule-values was specified.
	* tests/input.at (Unused values, Unused values before symbol
	declarations): Run tests with and without --warnings=midrule-values.

	* src/reader.c (check_and_convert_grammar): Use symbol_list_free rather
	than LIST_FREE directly.

2006-10-31  Joel E. Denny  <jdenny@ces.clemson.edu>

	Finish implementing --warnings=error, which should not be implied by
	--warnings=all (or by its synonyms -W and --warnings without
	subarguments).
	* src/complain.c (set_warning_issued): New function to report that
	warnings are being treated as errors and to record an error if so.
	Invoke...
	(warn_at, warn): ... here.
	* src/getargs.c (warnings_args, warnings_types): Reorder so that
	"error - warnings are errors" does not appear above "all - all of the
	above".
	(getargs): For -W and --warnings without subarguments, don't let
	FLAGS_ARGMATCH set warnings_error in warnings_flag.
	* src/getargs.h (enum warnings): Unset warnings_error in warnings_all.

2006-10-31  Joel E. Denny  <jdenny@ces.clemson.edu>

	* src/getargs.c (flags_argmatch): Don't cause segmentation fault for
	empty subargument list.  For example: `bison  --warnings=  parser.y'.

2006-10-21  Joel E. Denny  <jdenny@ces.clemson.edu>

	* data/push.c, data/yacc.c: Make sure there's a newline at the end of
	the parser header file so that gcc doesn't warn.

2006-10-21  Joel E. Denny  <jdenny@ces.clemson.edu>

	Split the default %destructor/%printer into two kinds: <*> and <!>.
	Discussed starting at
	<http://lists.gnu.org/archive/html/bison-patches/2006-09/msg00060.html>.
	* NEWS (2.3a+): Mention.
	* doc/bison.texinfo (Freeing Discarded Symbols): Document this and the
	previous change today related to mid-rules.
	(Table of Symbols): Remove %symbol-default and add <*> and <!>.
	* src/parse-gram.y (PERCENT_SYMBOL_DEFAULT): Remove.
	(TYPE_TAG_ANY): Add as <*>.
	(TYPE_TAG_NONE): Add as <!>.
	(generic_symlist_item): Remove RHS for %symbol-default and add RHS's
	for <*> and <!>.
	* src/scan-gram.l (PERCENT_SYMBOL_DEFAULT): Remove.
	(TYPE_TAG_ANY, TYPE_TAG_NONE): Add.
	* src/symlist.c (symbol_list_default_new): Split into tagged and
	tagless versions.
	(symbol_list_destructor_set, symbol_list_printer_set): Split
	SYMLIST_DEFAULT case into SYMLIST_DEFAULT_TAGGED and
	SYMLIST_DEFAULT_TAGLESS.
	* src/symlist.h: Update symbol_list_default*_new prototypes.
	(symbol_list.content_type): Split enum value SYMLIST_DEFAULT into
	SYMLIST_DEFAULT_TAGGED and SYMLIST_DEFAULT_TAGLESS.
	* src/symtab.c (default_destructor, default_destructor_location,
	default_printer, default_printer_location): Split each into tagged and
	tagless versions.
	(symbol_destructor_get, symbol_destructor_location_get,
	symbol_printer_get, symbol_printer_location_get): Implement tagged
	default and tagless default cases.
	(default_destructor_set, default_printer_set): Split each into tagged
	and tagless versions.
	* src/symtab.h: Update prototypes.
	* tests/actions.at (Default %printer and %destructor): Rename to...
	(Default tagless %printer and %destructor): ... this, and extend.
	(Per-type %printer and %destructor): Rename to...
	(Default tagged and per-type %printer and %destructor): ... this, and
	extend.
	(Default %printer and %destructor for user-defined end token): Extend.
	(Default %printer and %destructor are not for error or $undefined):
	Update.
	(Default %printer and %destructor are not for $accept): Update.
	(Default %printer and %destructor for mid-rule values): Extend.
	* tests/input.at (Default %printer and %destructor redeclared): Extend.
	(Unused values with default %destructor): Extend.

2006-10-21  Joel E. Denny  <jdenny@ces.clemson.edu>

	Don't apply the default %destructor/%printer to an unreferenced midrule
	value.  Mentioned at
	<http://lists.gnu.org/archive/html/bison-patches/2006-09/msg00104.html>.
	* src/symtab.c (dummy_symbol_get): Name all dummy symbols initially
	like $@n instead of just @n so that the default %destructor/%printer
	logic doesn't see them as user-defined symbols.
	(symbol_is_dummy): Check for both forms of the name.
	* src/reader.c (packgram): Remove the `$' from each midrule symbol
	name for which the midrule value is referenced in any action.
	* tests/actions.at (Default %printer and %destructor for mid-rule
	values): New test.
	* tests/regression.at (Rule Line Numbers, Web2c Report): Update output
	for change to dummy symbol names.

2006-10-20  Joel E. Denny  <jdenny@ces.clemson.edu>

	Warn about unset midrule $$ if the corresponding $n is used.
	* src/reader.c (symbol_should_be_used): Check midrule parent rule for
	$n usage.
	(packgram): Before invoking grammar_rule_check on any rule, make sure
	all actions have already been scanned in order to set `used' flags.
	Otherwise, checking that a midrule's $$ is set will not always work
	properly because the midrule check must forward-reference the midrule's
	parent rule.
	* tests/input.at (AT_CHECK_UNUSED_VALUES): Extend to check the new
	warning.

2006-10-20  Joel E. Denny  <jdenny@ces.clemson.edu>

	More improvements to the documentation of the prologue alternatives:
	* NEWS (2.3a+): Mention the new `Prologue Alternatives' section in the
	Bison manual.
	* doc/bison.texinfo (Prologue Alternatives): Correct some errors.  Add
	some text to clarify the relative importance of the new directives and
	to show how these directives may be viewed as code labels.

2006-10-16  Joel E. Denny  <jdenny@ces.clemson.edu>

	Similar to the recently removed %before-header, add %code-top as the
	alternative to the pre-prologue.  Mentioned at
	<http://lists.gnu.org/archive/html/bison-patches/2006-10/msg00063.html>.
	Also, let the prologue alternatives appear in the grammar section.
	* src/parse-gram.y (PERCENT_CODE_TOP): New token.
	(prologue_declaration): Move the existing prologue alternatives to...
	(grammar_declaration): ... here and add %code-top.
	* src/scan-gram.l (PERCENT_CODE_TOP): New token.

	Clean up and extend documentation for the prologue alternatives.
	* NEWS (2.3a+): Describe prologue alternatives.
	* doc/bison.texinfo (Prologue): Move discussion of prologue
	alternatives to...
	(Prologue Alternatives): ... this new section, and extend it to discuss
	all 4 directives in detail.
	(Table of Symbols): Clean up discussion of prologue alternatives and
	add %code-top.

2006-10-16  Juan Manuel Guerrero  <juan.guerrero@gmx.de>

	DJGPP specific issues.

	* djgpp/config.bat: config.hin has been moved to lib. Adjust
	config.bat accordingly.
	* djgpp/config.sed: Adjust config.sed for the use of autoconf 2.60.
	* djgpp/config.site: Likewise.

2006-10-16  Paolo Bonzini  <bonzini@gnu.org>

	Replace %*-header with %provides, %requires, %code.  See discussion at
	http://lists.gnu.org/archive/html/bison-patches/2006-10/msg00002.html

	* data/bison.m4 (b4_user_requires, b4_user_provides): New.
	(b4_user_start_header): Remove.
	* data/glr.c: Use new macros instead of b4_*start_header
	and b4_*end_header.
	* data/glr.cc: Likewise.
	* data/lalr1.cc: Likewise.
	* data/push.c: Likewise.
	* data/yacc.c: Likewise.

	* doc/bison.texinfo: Remove %before-header, rename
	%{start,end,after}-header to %requires, %provides, %code.

	* src/parse-gram.y: Likewise (also rename token names accordingly).
	* src/scan-gram.l: Likewise.
	* tests/actions.at: Likewise.

2006-10-14  Paul Eggert  <eggert@cs.ucla.edu>

	* lib/Makefile.am (AM_CFLAGS): Remove $(WERROR_CFLAGS).
	Problem reported by Joel E. Denny.

2006-10-14  Jim Meyering  <jim@meyering.net>

	(Sync from coreutils.)
	Work also when the working directory (with e.g. coreutils sources)
	is version controlled with git, rather than CVS.
	* bootstrap (CVS_only_file): Test for the existence of README-cvs,
	rather than CVS.
	In messages and comments, say e.g., "checked-out sources",
	rather than "CVS sources".
	(version_controlled_file): New function.  Work for git as well as
	for CVS.  Don't use grep's -q option.
	(slurp): Call it here, in place of CVS-specific code.

2006-10-14  Joel E. Denny  <jdenny@ces.clemson.edu>

	Fix testsuite for ./configure --enable-gcc-warnings:
	* configure.ac (gcc-warnings): Move -Wall before -Wno-sign-compare.
	Otherwise, gcc 4.1.0 (at least) warns about sign comparisons in
	__AT_CHECK_PRINTER_AND_DESTRUCTOR in tests/actions.at.
	* test/input.at (Torturing the Scanner): #include <stdlib.h> for abort.
	* test/regression.at (Diagnostic that expects two alternatives):
	Likewise.

2006-10-12  Paul Eggert  <eggert@cs.ucla.edu>

	* bootstrap.conf (gnulib_modules): Add config-h.
	* djgpp/subpipe.c: Include <config.h> unconditionally; don't
	worry about HAVE_CONFIG_H.
	* lib/abitset.c: Likewise.
	* lib/bitset.c: Likewise.
	* lib/bitset_stats.c: Likewise.
	* lib/bitsetv-print.c: Likewise.
	* lib/bitsetv.c: Likewise.
	* lib/ebitset.c: Likewise.
	* lib/get-errno.c: Likewise.
	* lib/lbitset.c: Likewise.
	* lib/subpipe.c: Likewise.
	* lib/timevar.c: Likewise.
	* lib/vbitset.c: Likewise.
	* lib/bitset.c: Include "bitset.h" first, to test interface.
	* lib/bitset_stats.c: Include "bitset_stats.h" first.
	* lib/bitsetv-print.c: Include "bitsetv-print.h" first.
	* lib/bitsetv.c: Include "bitsetv.h" first.
	* lib/get-errno.c: Include "get-errno.h" first.
	* m4/.cvsignore: Add config-h.m4.
	* tests/actions.at (Default %printer and %destructor for ...):
	Adjust expected line numbers in output to reflect removal of #if
	HAVE_CONFIG_H lines.
	* tests/glr-regression.at (Missed %merge type warnings when ...):
	Likewise.
	* tests/regression.at (Braced code in declaration in rules section):
	Likewise.
	* tests/atlocal.in (CPPFLAGS): Don't define HAVE_CONFIG_H.
	* tests/local.at (AT_DATA_GRAMMAR_PROLOGUE):
	Include <config.h> unconditionally.

	* bootstrap: Sync from coreutils, as follows:

	2006-10-11  Paul Eggert  <eggert@cs.ucla.edu>

	* bootstrap (symlink_to_gnulib): Fix bug: the dot_dots shell
	variable was sometimes used without being initialized.  This
	messed up the installation of the INSTALL file in some cases.

	2006-10-09  Paul Eggert  <eggert@cs.ucla.edu>

	* bootstrap (usage, main program, symlink_to_gnulib): Add option
	--copy.  Inspired by a suggestion from Bruno Haible.

	2006-10-03  Jim Meyering  <jim@meyering.net>

	* bootstrap: Undo last change to this file, since now gnulib-tool
	sticks with the automake default in generating dependencies.

2006-10-12  Paul Eggert  <eggert@cs.ucla.edu>

	* configure.ac: Use AC_PROG_CC_STDC; this is more modern than
	the old AC_PROG_CC / AM_PROG_CC_STDC combination.

	* doc/bison.1: Add copyright notice.

	* data/glr.c: Don't include <stdarg.h>; not used.

	* NEWS: The -g and --graph options now output graphs in Graphviz
	DOT format, not VCG format.
	* doc/bison.1: Likewise.
	* doc/bison.texinfo (Understanding, Bison Options): Likewise.
	* THANKS: Add Satya Kiran Popuri, who proposed the initial version
	of this change in
	<http://lists.gnu.org/archive/html/bison-patches/2006-09/msg00158.html>.
	* TODO: Remove Graphviz entry.
	* src/Makefile.am (bison_SOURCES): Add graphviz.c and graphviz.h;
	remove vcg.c, vcg.h, vcg_defaults.h.
	* src/vcg.c, src/vcg.h, src/vcg_defaults.h: Remove.
	* src/graphviz.c, src/graphviz.h: New files.
	* src/files.c (compute_output_file_names): Output .dot, not .vcg.
	* src/files.h: Make comment more generic.
	* src/main.c (main): Likewise.
	* src/print_graph.h: Likewise.
	* src/getargs.c (usage): Make usage description more generic.
	* src/print_graph.c: Include graphviz.h rather than vcg.h.
	(static_graph, fgraph): Remove.  All uses changed to pass
	arguments instead of sharing a static var.
	(print_core, print_actions, print_state, print_graph):
	Output graphviz format rather than VCG format.
	* tests/.cvsignore: Remove *.vcg; add *.dot.
	* tests/output.at: Expect *.dot files, not *.vcg files.

	* data/Makefile.am (dist_pkgdata_DATA): Add bison.m4; this
	accommodates the 2006-10-08 change.

2006-10-11  Bob Rossi  <bob@brasko.net>

	* data/push.c (yypushparse, yypvarsinit, yypvars): Wrap in b4_push_if.
	(b4_yyssa, b4_yyerror_range): New macros.
	(struct yypvars): Remove yyssa_ptr and yyerror_range_ptr fields.
	(yypvarsinit): Remove init of removed fields.
	(yypushparse): Remove use of removed fields; use new macros instead.

2006-10-11  Paul Eggert  <eggert@cs.ucla.edu>

	* data/push.c (yypushparse): Fix memory leak if yymsg is malloced
	in a push parser.  Reindent slightly to match yacc.c better.

2006-10-11  Bob Rossi  <bob@brasko.net>

	* data/push.c (struct yypvars): Remove yymsgbuf, yymsgbuf_ptr, yymsg,
	yymsg_alloc fields.
	(yypvarsinit, yypushparse): Remove init of removed fields.
	(yypushparse): Use yymsgbuf instead of yymsgbuf_ptr.

2006-10-09  Paul Eggert  <eggert@cs.ucla.edu>

	* THANKS: Add Paolo Bonzini and Bob Rossi.

2006-10-08  Paolo Bonzini  <bonzini@gnu.org>

	* data/c.m4 (b4_copyright, b4_epilogue, b4_location_initial_column,
	b4_location_initial_line, p4_parse_param, b4_ints_in, b4_flag_if,
	b4_define_flag_if and uses, b4_basename, b4_syncline, b4_user_code,
	b4_define_user_cde and uses): Remove.
	(b4_comment, b4_prefix, b4_sync_start): New.
	* data/bison.m4: New file, with most of the content removed from c.m4.
	* src/muscle_tab.h: Use "do {...} while(0)" throughout.
	* src/output.c (output_skeleton): Pass bison.m4.
	(prepare): Pass glr_flag and nondeterministic_flag.  Pass prefix
	only if specified.

2006-10-05  Paul Eggert  <eggert@cs.ucla.edu>

	Fix test failure reported by Tom Lane in
	<http://lists.gnu.org/archive/html/bug-bison/2006-10/msg00000.html>
	and try to make such failures easier to catch in the future.
	* data/glr.c (YYTRANSLATE): Don't check for nonpositive arg;
	that's now the caller's responsibility.
	(yyprocessOneStack, yyrecoverSyntaxError, yyparse):
	Set yychar = YYEOF if it's negative.
	* tests/actions.at (yylex): Abort if asked to read past EOF.
	* tests/conflicts.at (yylex): Likewise.
	* tests/cxx-type.at (yylex): Likewise.
	* tests/glr-regression.at (yylex): Likewise.
	* tests/input.at (yylex): Likewise.
	* tests/regression.at (yylex): Likewise.
	* tests/torture.at (yylex): Likewise.

2006-10-01  Paul Eggert  <eggert@cs.ucla.edu>

	Fix problems with translating English-language diagnostics.
	* bootstrap: Fix bug introduced in recent bootstrap changes, with
	respect to bison-runtime pot generation.  The YY_ stuff
	wasn't being captured.
	* bootstrap.conf (XGETTEXT_OPTIONS_RUNTIME): New var.
	* po/POTFILES.in: Add src/location.c, src/scan-code.l.
	* runtime-po/POTFILES.in: Add data/push.c.

2006-09-29  Paul Eggert  <eggert@cs.ucla.edu>

	Merge bootstrap changes from coreutils.

	2006-09-28  Jim Meyering  <jim@meyering.net>

	Automatically generated dependencies are important even
	when all of the sources in a directory come from gnulib.
	* bootstrap (gnulib_tool): Remove the "no-dependencies" automake
	option that gnulib-tool adds to what becomes our lib/gnulib.mk.

	2006-09-23  Jim Meyering  <jim@meyering.net>

	* bootstrap (gnulib_tool_options): Add "--local-dir gl".

	2006-09-20  Paul Eggert  <eggert@cs.ucla.edu>

	* bootstrap: Add support for --force.
	(usage): New function.  Describe usage less tersely.
	(CVS_only_file): New var.

2006-09-21  Paul Eggert  <eggert@cs.ucla.edu>

	* data/push.c (YYPUSH_MORE): Make it an enum instead.
	(yypushparse): Use YYPUSH_MORE instead of the mystery constant.
	Adjust white space and comments to match GNU style better.

2006-09-20  Bob Rossi  <bob@brasko.net>

	* data/push.c (yyresult_get): Remove function.
	(YYPUSH_MORE): Add #define.
	(yypushparse): Modify return value.

2006-09-20  Paul Eggert  <eggert@cs.ucla.edu>

	* stamp-h.in: Remove; no longer needed.
	* .cvsignore: Replace autom4te.cache and config.cache with *.cache.
	Remove config.h, config.hin, intl (no longer created).
	* lib/.cvsignore: Add config.h, config.hin, configmake.h, inttypes.h,
	stamp-h1.

	Sync bootstrap from coreutils, as follows:

	2006-09-18  Paul Eggert  <eggert@cs.ucla.edu>

	* bootstrap (symlink_to_gnulib): New function.
	(cp_mark_as_generated): Use it, to prefer symlinks-to-gnulib
	to copies-of-gnulib.
	(cp_mark_as_generated, slurp, gnulib_files):
	Avoid making a copy if it's the same as the old version.
	(gnulib_files): Add support for this variable (used by Bison).

2006-09-20  Paul Eggert  <eggert@cs.ucla.edu>

	* src/getargs.c (usage): Rework to use conventions similar to
	coreutils, to make translation a bit easier and the code a bit
	smaller.  Problem reported by Tim Van Holder.

2006-09-15  Paul Eggert  <eggert@cs.ucla.edu>

	Use some of gnulib's new modules, taken from coreutils.

	* bootstrap: Sync from coreutils, except add support for gnulib_files.
	* bootstrap.conf: New file.
	(gnulib_modules): Add configmake, inttypes, unistd.
	(XGETTEXT_OPTIONS): Add complain, complain_at,
	fatal, fatal_at, warn, warn_at, unexpected_end.
	* configure.ac (AC_CONFIG_HEADERS): config.h is now in lib, not here.
	(gl_USE_SYSTEM_EXTENSIONS): Remove; gl_EARLY now does this.
	(gl_EARLY): Add.
	(AM_STDBOOL_H): Remove; gl_INIT now dows this.
	(gl_INIT): Add
	(GNULIB_AUTOCONF_SNIPPET): Remove.
	(AM_GNU_GETTEXT): Add; require formatstring macros since that's
	the pickiest.
	* lib/.cvsignore: Add inttypes_.h.
	* lib/Makefile.am: Include gnulib.mk first so we can append to it.
	(AM_CFLAGS): Add WERROR_CFLAGS, to be more like coreutils.
	(BUILT_SOURCES, EXTRA_DIST, MOSTLYCLEANFILES): Remove
	no-longer-necessary initializations.
	(lib_SOURCES): Remove, replacing by libbison_a_SOURCES.
	* lib/subpipe.c: Include <unistd.h> unconditionally, now that we
	use the unistd module.
	* src/system.h: Likewise.
	* m4/.cvsignore: Remove *_gl.m4, gnulib.m4, inttypes_h.m4, uintmax_t.m4,
	ulonglong.m4.  Add gettext.m4, gnulib-cache.m4, gnulib-comp.m4,
	gnulib-tool.m4, inttypes-h.m4, inttypes-pri.m4, inttypes.m4.
	* src/Makefile.am (DEFS): Remove, since configmake does this for us.
	(AM_CPPFLAGS): Remove -I../lib, since Automake does that for us.
	* src/system.h: Include inttypes.h unconditionally, now that we
	use the inttypes module.  Don't bother to include stdint.h, since
	inttypes.h now does that for us.
	(LOCALEDIR): Remove, now that we use the configmake module.
	* src/getargs.c: Include configmake.h.
	* src/main.c: Likewise.
	* src/output.c: Likewise.
	* tests/atlocal.in (CPPFLAGS): Include from $abs_top_builddir/lib,
	not from $abs_top_builddir, since config.h moved.


	Port to GCC 2.95.  First two problems reported by Michael Deutschmann in
	<http://lists.gnu.org/archive/html/bug-bison/2006-09/msg00018.html>.

	* src/parse-gram.y (symbol_declaration): Don't put statements
	before declarations; it's not portable to C89.
	* src/scan-code.l (handle_action_at): Likewise.

	* src/scan-code.l: Always initialize braces_level; the old code
	left it uninitialized and therefore had undefined behavior.

	Don't attempt to redefine 'assert', since it runs afoul of
	systems where standard headers (mistakenly) include <assert.h>.
	Instead, define and use our own alternative, called 'aver'.
	* src/reader.c: Don't include assert.h, since we no longer
	use assert.
	* src/scan-code.l: Likewise.
	* src/system.h (assert): Remove, replacing with....
	(aver): New function, taking a bool arg.  All uses changed.
	* src/tables.c (pack_vector): Ensure that aver arg is bool,
	not merely an integer.

2006-09-15  Bob Rossi  <bob@brasko.net>

	* data/Makefile.am (dist_pkgdata_DATA): Add push.c.
	* data/c.m4 (YYPUSH): New.
	(b4_push_if): New macro.  Use it instead of #ifdef YYPUSH.
	* src/getargs.c (push_parser): New var.
	* src/getargs.h (push_parser): New declaration.
	* src/output.c (prepare): Add macro insertion of `push_flag'.
	* src/parse-gram.y (PERCENT_PUSH_PARSER): New token.
	(prologue_declaration): Parse %push-parser.
	* src/scan-gram.l: Scan new PERCENT_PUSH_PARSER token.
	* tests/calc.at (_AT_CHECK_CALC_ERROR): Add "Return" and "Now" to
	list of removed lines from the traces observed.
	(AT_CHECK_CALC_LALR): Added push parser tests.

2006-09-13  Paul Eggert  <eggert@cs.ucla.edu>

	* NEWS: Version 2.3a.
	* configure.ac (AC_INIT): Likewise.

	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Remove
	"#define YYSTYPE int" that caused "make maintainer-check" to fail
	due to header ordering dependencies.  I don't know why the #define
	was there.

	Fix glr.cc and lalr1.cc's use of YYDEBUG so that there's zero
	runtime cost when YYDEBUG is not defined, and so that some tests
	that used to fail now work.  Problem and initial suggestion by
	Paolo Bonzini.
	* data/c++.m4 (b4_parse_param_cons): Omit leading ','.
	* data/glr.cc (b4_parser_class_name):
	Initialize yycdebug_ only if YYDEBUG.  Also, initialize yydebug_.
	(debug_level, set_debug_level): Affect yydebug_, not ::yydebug.
	(yydebug_) [YYDEBUG]: New member.
	(yycdebug_): Now defined only if YYDEBUG.
	* data/lalr1.cc (yydebug_, yycdebug_): Now defined only if YYDEBUG.
	(YYCDEBUG) [!YYDEBUG]: Don't use yydebug_ and yycdebug_.
	(b4_parser_class_name): Initialize yydebug_ and yycdebug_ only
	if YYYDEBUG.
	(debug_stream, set_debug_stream, debug_level, set_debug_level):
	Define only if YYDEBUG.
	* tests/calc.at (_AT_DATA_CALC_Y) [!YYDEBUG]: Omit call to
	set_debug_level.
	* tests/regression.at (_AT_DATA_DANCER_Y) [!YYDEBUG]: Likewise.
	* tests/calc.at (AT_CHECK_CALC_GLR_CC): Uncomment calls to
	AT_CHECK_CALC_GLR_CC that are working now.

2006-09-12  Paul Eggert  <eggert@cs.ucla.edu>

	* data/glr.cc (YYERROR_VERBOSE, YYTOKEN_TABLE): Remove.
	We don't need them in glr.cc, and glr.c defines them.
	Defining YYERROR_VERBOSE to 0 here breaks glr.c, since glr.c
	assumes that defining it to anything is the same as defining
	it to 1.  Problem reported by Paolo Bonzini.

2006-09-12  Paolo Bonzini  <bonzini@gnu.org>  (tiny change)

	* data/c.m4 (b4_null, b4_case): Define.
	* src/output.c (prepare_symbols): Use b4_null.
	(user_actions_output): Use b4_case.

2006-09-11  Paul Eggert  <eggert@cs.ucla.edu>

	* data/glr.c (b4_shared_declarations): Put start-header first,
	before any #includes that we generate, so that feature-test
	macros work.  Problem reported by Michael Deutschmann in
	<http://lists.gnu.org/archive/html/bug-bison/2006-09/msg00004.html>.
	* data/lalr1.cc: Likewise.
	* doc/bison.texinfo (Prologue): Document that feature-test macros
	should be defined before any Bison declarations.
	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Put defns
	that depend on location.hh after, not before, Bison decls, since
	we now include location.hh after the first user prologue.

	* doc/bison.texinfo (Calc++ Parser): Fix memory leak reported by
	Sander Brandenburg in
	<http://lists.gnu.org/archive/html/bug-bison/2006-09/msg00002.html>.
	Also, fix minor white space and comment issues.
	(Prologue): Mention that it's better to define feature-test macros
	before Bison declarations.  Problem reported by Michael Deutschmann.

	* README-cvs: Fix typo: "&" should be "&&".  Problem reported
	by Jim Meyering.
	* m4/.cvsignore: Add argmatch.m4.  Remove obstack.m4, strerror_r.m4.
	This adjusts to recent gnulib changes.

2006-09-04  Joel E. Denny  <jdenny@ces.clemson.edu>

	Finish implementation of per-type %destructor/%printer.  Discussed
	starting at
	<http://lists.gnu.org/archive/html/bison-patches/2006-02/msg00064.html>
	and
	<http://lists.gnu.org/archive/html/bison-patches/2006-06/msg00091.html>.
	* NEWS (2.3+): Add a description of this feature to the default
	%destructor/%printer description.
	* doc/bison.texinfo (Freeing Discarded Symbols): Likewise.
	* src/symlist.c (symbol_list_destructor_set, symbol_list_printer_set):
	Invoke semantic_type_destructor_set or semantic_type_printer_set when a
	list node contains a semantic type.
	* src/symtab.c, src/symtab.h: Extend with a table that associates
	semantic types with their %destructor's and %printer's.
	(semantic_type_from_uniqstr, semantic_type_get,
	semantic_type_destructor_set, semantic_type_printer_set): New functions
	composing the public interface of that table.
	(symbol_destructor_get, symbol_destructor_location_get,
	symbol_printer_get, symbol_printer_location_get):  If there's no
	per-symbol %destructor/%printer, look up the per-type before trying
	the default.
	* tests/actions.at (Per-type %printer and %destructor): New test case.
	* tests/input.at (Default %printer and %destructor redeclared):
	Extend to check that multiple occurrences of %symbol-default in a
	single %destructor/%printer declaration is an error.
	(Per-type %printer and %destructor redeclared, Unused values with
	per-type %destructor): New test cases.

2006-09-04  Joel E. Denny  <jdenny@ces.clemson.edu>

	Require default %destructor/%printer to be declared using
	%symbol-default instead of an empty symbol list, and start working on
	new per-type %destructor/%printer.  Discussed at
	<http://lists.gnu.org/archive/html/bison-patches/2006-09/msg00007.html>.
	* NEWS (2.3+): Add %symbol-default to example.
	* bison.texinfo (Freeing Discarded Symbols): Likewise.
	(Table of Symbols): Add entry for %symbol-default.
	* src/parse-gram.y (PERCENT_SYMBOL_DEFAULT): New token.
	(generic_symlist, generic_symlist_item): New nonterminals for creating
	a list in which each item is a symbol, semantic type, or
	%symbol-default.
	(grammar_declaration): Use generic_symlist in %destructor and %printer
	declarations instead of symbols.1 or an empty list.
	(symbol_declaration, precedence_declaration, symbols.1): Update actions
	for changes to symbol_list.
	* src/reader.c: Update for changes to symbol_list.
	* src/scan-code.l: Likewise.
	* src/scan-gram.l: Scan new PERCENT_SYMBOL_DEFAULT token.
	* src/symlist.c, src/symlist.h: Extend such that a list node may
	represent a semantic type or a %symbol-default in addition to just an
	ordinary symbol.  Add switched functions for setting %destructor's and
	%printer's.
	* tests/actions.at, tests/input.at: Add %symbol-default to all default
	%destructor/%printer declarations.

2006-08-23  Joel E. Denny  <jdenny@ces.clemson.edu>

	Whether the default %destructor/%printer applies to a particular symbol
	isn't a question of whether the user *declares* that symbol (in %token,
	for example).  It's a question of whether the user by any means
	*defines* the symbol at all (by simply using a char token, for
	example).  $end is defined by Bison whereas any other token with token
	number 0 is defined by the user.  The error token is always defined by
	Bison regardless of whether the user declares it with %token, but we
	may one day let the user define error as a nonterminal instead.
	* NEWS (2.3+): Say "user-defined" instead of "user-declared".
	* doc/bison.texinfo (Freeing Discarded Symbols): Likewise, and document
	the meaning of "user-defined".
	* tests/actions.at (Default %printer and %destructor for user-declared
	end token): Rename to...
	(Default %printer and %destructor for user-defined end token): ...
	this.

	* src/symtab.c (symbol_destructor_get, symbol_printer_get): In the
	computation of whether to apply the default, don't maintain a list of
	every Bison-defined symbol.  Instead, just check for a first character
	of '$', which a user symbol cannot have, and check for the error token.

2006-08-21  Joel E. Denny  <jdenny@ces.clemson.edu>

	Don't apply the default %destructor or %printer to the error token,
	$undefined, or $accept.  This change fits the general rule that the
	default %destructor and %printer are only for user-declared symbols,
	and it solves several difficulties that are described in the new test
	cases listed below.
	* src/symtab.c (symbol_destructor_get, symbol_printer_get): Implement.
	* tests/actions.at (Default %printer and %destructor are not for error
	or $undefined, Default %printer and %destructor are not for $accept):
	New test cases.

2006-08-19  Joel E. Denny  <jdenny@ces.clemson.edu>

	Allow %start after the first rule.
	* src/reader.c (grammar_current_rule_begin): Don't set the start symbol
	when parsing the first rule.
	(check_and_convert_grammar): Search for it here after all grammar
	declarations have been parsed.  Skip midrules, which have dummy LHS
	nonterminals.
	* src/symtab.c (symbol_is_dummy): New function.
	* src/symtab.h (symbol_is_dummy): Declare it.
	* tests/input.at (%start after first rule): New test.

2006-08-18  Joel E. Denny  <jdenny@ces.clemson.edu>

	Redo some of the previous commit: add back the ability to use
	non-aliased/undeclared string literals since it might be useful to
	those declaring %token-table.
	* src/reader.c (check_and_convert_grammar): Undo changes in previous
	commit: don't worry about complaints from symbols_pack.
	* src/symtab.c (symbol_new, symbol_class_set,
	symbol_check_alias_consistency): Undo changes in previous commit: count
	each string literal as a new symbol and token, assign it a symbol
	number, and don't complain about non-aliased string literals.
	(symbols_pack): Since symbol_make_alias still does not decrement symbol
	and token counts but does still set aliased tokens to the same number,
	symbol_pack_processor now leaves empty slots in the symbols array.
	Remove those slots.
	* tests/regression.at (Undeclared string literal): Remove test case
	added in previous commit since non-aliased string literals are allowed
	again.
	(Characters Escapes, Web2c Actions): Undo changes in previous commit:
	remove unnecessary string literal declarations.
	* tests/sets.at (Firsts): Likewise.

2006-08-18  Joel E. Denny  <jdenny@ces.clemson.edu>

	Don't allow an undeclared string literal, but allow a string literal to
	be used before its declaration.
	* src/reader.c (check_and_convert_grammar): Don't invoke packgram if
	symbols_pack complained.
	* src/symtab.c (symbol_new): Don't count a string literal as a new
	symbol.
	(symbol_class_set): Don't count a string literal as a new token, and
	don't assign it a symbol number since symbol_make_alias does that.
	(symbol_make_alias): It's not necessary to decrement the symbol and
	token counts anymore.  Don't assume that an alias declaration occurs
	before any uses of the identifier or string, and thus don't assert that
	one of them has the highest symbol number so far.
	(symbol_check_alias_consistency): Complain if there's a string literal
	that wasn't declared as an alias.
	(symbols_pack): Bail if symbol_check_alias_consistency failed since
	symbol_pack asserts that every token has been assigned a symbol number
	although undeclared string literals have not.
	* tests/regression.at (String alias declared after use, Undeclared
	string literal): New test cases.
	(Characters Escapes, Web2c Actions): Declare string literals as
	aliases.
	* tests/sets.at (Firsts): Likewise.

2006-08-14  Joel E. Denny  <jdenny@ces.clemson.edu>

	In the grammar scanner, STRING_FINISH unclosed constructs and return
	them to the parser in order to improve error messages.
	* src/scan-gram.l (SC_ESCAPED_STRING, SC_ESCAPED_CHARACTER,
	SC_BRACED_CODE, SC_PROLOGUE): Implement.
	* tests/input.at (Unclosed constructs): New test case.
	* tests/regression.at (Invalid inputs): Update now that unclosed %{ is
	seen.

	* src/scan-gram.h, src/scan-gram.l (gram_last_braced_code_loc): Remove
	unused global.

2006-08-13  Joel E. Denny  <jdenny@ces.clemson.edu>

	Handle string aliases for character tokens correctly.
	* src/symtab.c (symbol_user_token_number_set): If the token has an
	alias, check and set its alias's user token number instead of its own,
	which is set to indicate the alias.  Previously, every occurrence of
	the character token in the grammar overwrote that alias indicator with
	the character code.
	* tests/input.at (String aliases for character tokens): New test.

2006-08-12  Joel E. Denny  <jdenny@ces.clemson.edu>

	* src/parse-gram.y: Add `%expect 0' so we don't overlook conflicts.

2006-08-11  Paul Eggert  <eggert@cs.ucla.edu>

	* bootstrap: Put in need-ngettext argument to AM_GNU_GETTEXT,
	to prevent failures when building on older platforms.
	Check for autopoint failure.
	Set XGETTEXT_OPTIONS to values that check for C format strings,
	so that translators are warned about them (this also helps
	prevent core dumps).

	* lib/subpipe.c (create_subpipe): Use new gnulib pipe_safer
	function, since it simplifies our code a bit.

	* configure.ac (AC_ARG_ENABLE): Use -Wextra -Wno-sign-compare
	rather than -W, so we don't get bogus warnings about sign comparisons.
	Add -Wpointer-arith, since that warning is useful (it reports code
	that does not conform to C89 and that some compilers reject).
	* data/c.m4, data/glr.c, data/lalr1.cc, data/yacc.c: Undo latest change,
	since it's no longer needed.

2006-08-10  Joel E. Denny  <jdenny@ces.clemson.edu>

	Clean up scanners a bit.
	* src/flex-scanner.h (FLEX_NO_OBSTACK): New macro that blocks obstack
	definitions so gcc won't warn when obstack_for_string is unused.
	* src/scan-code.l: config.h and system.h are already #include'd by
	scan-code-c.c, so get rid of them here.
	* src/scan-gram.l: Likewise.
	* src/scan-skel.l: Likewise, and use flex-scanner.h without obstack
	definitions rather than duplicating the rest of it.
	* src/scan-gram-c.c, scan-skel-c.c: #include "system.h".

2006-08-09  Joel E. Denny  <jdenny@ces.clemson.edu>

	Suppress signed/unsigned comparison warnings for yycheck.
	* data/c.m4 (b4_safest_int_type): New macro.
	* data/glr.c, data/lalr1.cc: Wherever you compare yycheck[i] against
	a signed int type, cast it to b4_safest_int_type first.
	* data/yacc.c: Likewise.
	(b4_safest_int_type): Overwrite the one from c.m4 since b4_int_type is
	also overwritten.

2006-08-09  Ralf Wildenhues <Ralf.Wildenhues@gmx.de>  (tiny change)

	* doc/bison.texinfo: Fix some typos.

2006-08-02  Paul Eggert  <eggert@cs.ucla.edu>

	* m4/.cvsignore: Add inttypes_h.m4,lib-ld.m4, lib-prefix.m4,
	po.m4, stdint_h.m4, uintmax_t.m4, ulonglong.m4, warning.m4.

	* bootstrap (gnulib_tool): Stop using --assume-autoconf;
	the latest gnulib does this a different way.
	(get_translations): Sharuzzaman Ahmat Raslan reported that the ms
	translation was patched, so stop omitting it.

2006-07-29  Joel E. Denny  <jdenny@ces.clemson.edu>

	Enable declaration of default %printer/%destructor.  Make the parser
	use these for all user-declared grammar symbols for which the user does
	not declare a specific %printer/%destructor.  Thus, the parser uses it
	for token 0 if the user declares it but not if Bison generates it as
	$end.  Discussed starting at
	<http://lists.gnu.org/archive/html/bison-patches/2006-02/msg00064.html>,
	<http://lists.gnu.org/archive/html/bison-patches/2006-06/msg00091.html>,
	and
	<http://lists.gnu.org/archive/html/bison-patches/2006-07/msg00019.html>.
	* NEWS (2.3+): Mention.
	* doc/bison.texinfo (Actions in Mid-Rule): It's no longer impossible to
	declare a %destructor for a mid-rule's semantic value.  It's just
	impossible to declare one specific to it.
	(Freeing Discarded Symbols): Mention that @$ can be used in %destructor
	code.  Describe default %destructor form.
	* src/parse-gram.y (grammar_declaration): Parse default
	%printer/%destructor declarations.
	* src/output.c (symbol_destructors_output): Use symbol_destructor_get
	and symbol_destructor_location_get rather than accessing the destructor
	and destructor_location members of struct symbol.
	(symbol_printers_output): Likewise but for %printer's.
	* src/reader.c (symbol_should_be_used): Likewise but for %destructor's
	again.
	* src/symtab.c (default_destructor, default_destructor_location,
	default_printer, default_printer_location): New static global
	variables to record the default %destructor and %printer.
	(symbol_destructor_get, symbol_destructor_location_get,
	symbol_printer_get, symbol_printer_location_get): New functions to
	compute the appropriate %destructor and %printer for a symbol.
	(default_destructor_set, default_printer_set): New functions to set the
	default %destructor and %printer.
	* src/symtab.h: Prototype all those new functions.
	* tests/actions.at (Default %printer and %destructor): New test to
	check that the right %printer and %destructor are called, that they're
	not called for $end, and that $$ and @$ work correctly.
	(Default %printer and %destructor for user-declared end token): New
	test to check that the default %printer and %destructor are called for
	a user-declared end token.
	* tests/input.at (Default %printer and %destructor redeclared, Unused
	values with default %destructor): New tests to check related grammar
	warnings and errors.

2006-07-29  Joel E. Denny  <jdenny@ces.clemson.edu>

	Clean up handling of %destructor for the end token (token 0).
	Discussed starting at
	<http://lists.gnu.org/archive/html/bison-patches/2006-07/msg00019.html>
	and
	<http://lists.gnu.org/archive/html/help-bison/2006-07/msg00013.html>.

	Make the skeletons consistent in how they pop the end token and invoke
	its %destructor.
	* data/glr.c (yyrecoverSyntaxError, yyparse): Don't pop the start
	state, which has token number 0, since this would invoke the
	%destructor for the end token.
	* data/lalr1.cc (yy::parser::parse): Don't check for the final state
	until after shifting the end token, or else it won't be popped.
	* data/yacc.c (yyparse): Likewise.

	* data/glr.c (yyparse): Clear the lookahead after shifting it even when
	it's the end token.  Upon termination, destroy an unshifted lookahead
	even when it's the end token.
	* data/lalr1.cc (yy::parser::parse): Likewise.
	* data/yacc.c (yyparse): Likewise.

	* src/reader.c (packgram): Don't check rule 0.  This suppresses unused
	value warnings for the end token when the user gives the end token a
	%destructor.

	* tests/actions.at (Printers and Destructors): Test all the above.

2006-07-24  Paul Eggert  <eggert@cs.ucla.edu>

	Update to latest gnulib and gettext versions.
	* bootstrap (gnulib-modules): Remove hard-locale, stdio-safer.
	Add fopen-safer.
	(gnulib_files): Add m4/warning.m4.  Don't worry about files
	overwritten by autopoint.
	Replace gt_INTL_SUBDIR_CORE with an empty body in m4/gettext_gl.m4.
	Suppress "id", "ms", "tr" translations for now, since gettext 0.15
	rejects them.
	Don't use autoreconf; instead, invoke autopoint etc. by hand,
	so that we can remove the intl files at a better time.
	(intl_files_to_remove): Remove aclocal.m4, since it gets
	rebuilt anyway.  Remove m4/inttypes_h.m4, m4/inttypes.m4,
	m4/isc-posix.m4, m4/lib-ld.m4, m4/lib-prefix.m4, m4/po.m4,
	m4/stdint_h.m4, m4/uintmax_t.m4, m4/ulonglong.m4.
	Add m4/inttypes-h.m4, m4/lock.m4, m4/visibility.m4.
	Remove datarootdir hack; no longer needed.
	* configure.ac: Use gl_WARNING_CFLAGS rather than BISON_WARNING.
	(AM_GNU_GETTEXT_VERSION): Bump from 0.12 to 0.15.
	* lib/.cvsignore: Remove hard-locale.c, hard-locale.h, strdup.c,
	strdup.h.
	* m4/.cvsignore: Remove hard-locale.m4, strdup.m4.
	* m4/warning.m4: Remove from CVS, since we now use gnulib's version.

2006-07-20  Paul Eggert  <eggert@cs.ucla.edu>

	* bootstrap: Adjust to today's change to gnulib-tool by invoking
	it with --assume-autoconf='latest-stable'.

2006-07-13  Joel E. Denny  <jdenny@ces.clemson.edu>

	* src/parse-gram.y (grammar_declaration): Don't confuse Doxygen (at
	least 1.4.7 and 1.4.4) by putting a #line between `typedef union
	YYSTYPE' and `{'.
	* src/muscle_tab.h (muscle_grow): Replace the header comments with
	those from muscle_tab.c since the old ones are misleading.

2006-07-13  Akim Demaille  <akim@epita.fr>

	Support %define "KEY" {VALUE}.
	* src/scan-code.h, src/scan-code.l (translate_action)
	(translate_rule_action, translate_symbol_action, translate_code):
	Return char *, not const char *.
	* src/parse-gram.y (declaration): Rename as...
	(prologue_declaration): this.
	(string_content): Remove this nonterminal, use STRING.
	(braceless, content, content.opt): New nonterminal.
	Use them.
	(%define): Now accept content.opt, i.e., accept also BRACED_CODE
	as value.
	* src/scan-gram.l (getargs.h): Don't include it.

2006-07-12  Paul Eggert  <eggert@cs.ucla.edu>

	* data/lalr1.cc (YYCDEBUG): Use 'if (yydebug_) (*yycdebug_)'
	rather than a for-loop that declares a local bool variable.  This
	should work around a compatibility problem with a Cray x1e C++
	compiler reported by Hung Nguyen in
	<http://lists.gnu.org/archive/html/help-bison/2006-07/msg00022.html>.
	The for-loop was introduced in the 2004-11-17 change but I don't
	know why it was needed.

2006-07-12  Akim Demaille  <akim@epita.fr>

	* data/c.m4: Comment changes.

2006-07-10  Akim Demaille  <akim@lrde.epita.fr>

	* src/complain.c (error_message, ERROR_MESSAGE): New.
	To factor...
	(fatal_at, fatal, warn_at, warn, complain_at, complain): these.
	* src/complain.h, src/complain.c (warning_issued): Remove, unused.

2006-07-09  Paul Eggert  <eggert@cs.ucla.edu>

	* NEWS: Instead of %union, you can define and use your own union type
	YYSTYPE if your grammar contains at least one <type> tag.
	Your YYSTYPE need not be a macro; it can be a typedef.
	* doc/bison.texinfo (Value Type, Multiple Types, Location Type):
	(Union Decl, Decl Summary): Document this.
	* data/glr.c (YYSTYPE): Implement this.
	* data/glr.cc (YYSTYPE): Likewise.
	* data/lalr1.cc (YYSTYPE): Likewise.
	* data/yacc.c (YYSTYPE): Likewise.
	* src/output.c (prepare): Output tag_seen_flag.
	* src/parse-gram.y (declaration, grammar_declaration):
	Use 'union_seen' rather than 'typed' to determine whether
	%union has been seen, since grammars can now be typed without
	%union.
	(symbol_declaration, type.opt, symbol_def):
	Keep track of whether a tag has been seen.
	* src/reader.c (union_seen, tag_seen): New vars.
	(typed): remove.
	* src/reader.h (union_seen, tag_seen, typed): Likewise.
	* src/scan-code.l (untyped_var_seen): New variable.
	(handle_action_dollar): Adjust to above changes.
	(handle_action_dollar, handle_action_at):
	Improve overflow checking for outlandish numbers.
	* tests/input.at (AT_CHECK_UNUSED_VALUES): Redo test to
	avoid new diagnostics generated by above changes.
	* tests/regression.at (YYSTYPE typedef): Add test to check
	for type tags without %union.

	* src/symlist.c (symbol_list_length): Return int, not unsigned
	int, since callers expect int.  This may need to get revisited
	once we have proper integer overflow checking.

	* src/scan-gram.h (gram_scanner_cursor): Remove decl, since this
	object is now static.

	* src/getargs.c (flags_argmatch): Return void, not int,
	to pacify ./configure --enable-gcc-warnings.

	* src/flex-scanner.h (STRING_FREE): Don't use FLEX_PREFIX (last_string)
	since last_string is already defined to FLEX_PREFIX (last_string).

2006-07-09  Akim Demaille  <akim@lrde.epita.fr>

	Implement --warnings/-W.
	* src/getargs.c (report_argmatch, trace_argmatch): Remove,
	replaced by...
	(flags_argmatch, FLAGS_ARGMATCH): this new function and macro.
	Adjust callers.
	* src/getargs.h, src/getargs.c (warnings, warnings_flags)
	(warnings_args, warnings_types): New.
	(getargs, short_options, long_options): Accept -W/--warnings.
	Sort the options by alphabetical order, upper case letter right
	before its lower case.

2006-07-09  Joel E. Denny  <jdenny@ces.clemson.edu>

	Change %merge result type clash warnings to errors.  Discussed at
	<http://lists.gnu.org/archive/html/bison-patches/2006-07/msg00026.html>.
	* src/reader.c (record_merge_function_type): Use complain_at.
	* tests/glr-regression.at (Missed %merge type warnings when LHS type is
	declared later): Update test case results.

2006-07-09  Akim Demaille  <akim@lrde.epita.fr>

	* src/getargs.h, src/getargs.c: Swap --report and --trace handling
	to be in alphabetical order.
	(trace_args): Spelling fixes.

2006-07-09  Paul Eggert  <eggert@cs.ucla.edu>

	* data/yacc.c (YYID, yy_stack_print): Prefix local vars with "yy"
	so they don't collide with user-defined macros.
	(yy_stack_print): Don't assume that yytype_int16 promotes to int;
	this was never guaranteed, and now that we're using gnulib stdint,
	which defines int_fast16_t to long int, the problem is exposed.

2006-07-08  Paul Eggert  <eggert@cs.ucla.edu>

	* data/c.m4 (b4_basename): Simplify a bit, since we don't
	need the full POSIX semantics (and weren't implementing them
	anyway).

	Adjust to Autoconf 2.60 and today's gnulib.
	* bootstrap (gnulib_modules): Add stdint.
	Remove special case for m4/onceonly_2_57.m4, since gnulib-tool
	no longer copies it.
	(intl_files_to_remove): Remove m4/longlong.m4 and m4/wchar_t.m4,
	since stdint needs the former and wcwidth (which is now required
	by mbswidth) needs the latter.
	Append 'datarootdir = @datarootdir@' to po/Makefile.in.in, to
	work around a compatibility glitch between gettext 0.14.6 and
	Autoconf 2.60.
	* configure.ac (AC_PREREQ): Require Autoconf 2.60.
	Do not check for uintptr_t, since new stdint module does the right
	thing.
	* lib/.cvsignore: Remove alloca.c, alloca.h, alloca_.h.
	Add stdint.h, stdint_.h, wcwidth.h.
	* m4/.cvsignore: Remove alloca.m4, onceonly.m4.
	Add absolute-header.m4, double-slash-root.m4, longlong.m4,
	stdint.m4, wchar_t.m4, wcwidth.m4.
	* src/files.c: Include <dirname.h> and <stdio-safer.h> in the
	usual order for ../lib/*.h files.
	(file_name_split): Use last_component, not base_name, to adjust
	to gnulib changes.
	* src/parse-gram.h: Include <strverscmp.h> in the usual order
	for ../lib/*.h files.
	(YYTYPE_INT16, YYTYPE_INT8, YYTYPE_UINT16, YYTYPE_UINT8):
	Define unconditionally, since we now assume the stdint module.
	* src/scan-skel.l: Include <dirname.h>.
	(BASE_QPUTS): Use last_component, not base_name.
	* src/system.h: Include <unlocked-io.h> in the usual order
	for ../lib/*.h files.  Include <stdint.h> unconditionally,
	since we now use the stdint module.
	(uintptr_t): Declare if UINTPTR_MAX is not defined, not
	HAVE_UINTPTR_T, since we now use the stdint module.
	(base_name): Remove decl, since files now include <dirname.h>
	to get the decl.

2006-07-08  Akim Demaille  <akim@lrde.epita.fr>

	* data/c.m4 (b4_location_initial_column, b4_location_initial_line):
	New, default to 1.
	* data/yacc.c, data/glr.c, data/location.cc: Use them.
	* NEWS, doc/bison.texinfo: The initial column and line are 1 by
	default.
	* tests/calc.at: Adjust.

2006-07-08  Akim Demaille  <akim@lrde.epita.fr>

	* data/c.m4 (b4_basename): New.
	(b4_syncline): Also output the location of its invocation (from
	the skeleton).
	(b4_user_action, b4_define_user_action, b4_user_actions)
	(b4_user_initial_action, b4_user_post_prologue,	b4_user_start_header)
	(b4_user_stype): New.
	* data/yacc.c, data/glr.c, data/lalr1.cc, data/glr.cc: Use them.

2006-07-07  Joel E. Denny  <jdenny@ces.clemson.edu>

	In the grammar file, the first column is 1 not 0 on the first line as
	on every other line.
	* src/parse-gram.y (%initial-action): Initialize @$ correctly.
	* tests/input.at (Torturing the Scanner): Update output.

	* src/scan-gram.l (scanner_cursor): Declare it static.

2006-07-07  Joel E. Denny  <jdenny@ces.clemson.edu>

	In warnings, say "previous declaration" rather than "first
	declaration".
	* src/symtab.c (redeclaration): Do that here.
	* src/reader.c (record_merge_function_type): In the case of a result
	type clash, report the previous declaration rather than the very first
	one in the grammar file.
	* tests/glr-regression.at (Missed %merge type warnings when LHS type is
	declared later): Add a third declaration to check this behavior.
	* tests/input.at (Incompatible Aliases): Update output.

2006-06-27  Akim Demaille  <akim@epita.fr>

	* doc/Doxyfile.in: New.
	* doc/Makefile.am: Use it.
	* src/lalr.h, src/symtab.h: Initial doxygenation.

2006-06-26  Joel E. Denny  <jdenny@ces.clemson.edu>

	Don't miss %merge result type warnings just because the LHS types are
	declared after the %merge.  This continues the effort of the previous
	patch.
	* src/reader.c (get_merge_function): Don't set the merger type yet.
	(record_merge_function_type): New function for setting the merger type
	and checking for clashes.
	(grammar_current_rule_merge_set): Set the location of the %merge for
	the current rule.
	(packgram): Invoke record_merge_function_type for each rule now that
	all symbol type declarations have been parsed.
	* src/reader.h (merger_list.type_declaration_location): New member
	storing the location of the first %merge from which the type for this
	merging function was derived.
	* src/symlist.h (symbol_list.merger_declaration_location): New member
	storing the location of a rule's %merge, if any.
	* tests/glr-regression.at (Missed %merge type warnings when LHS type is
	declared later): New test to catch the error fixed by the above patch.

2006-06-26  Joel E. Denny  <jdenny@ces.clemson.edu>

	Get action warnings (grammar_rule_check) right even when symbol
	declarations appear after the rules.  Discussed at
	<http://lists.gnu.org/archive/html/bison-patches/2006-06/msg00108.html>
	and
	<http://lists.gnu.org/archive/html/bison-patches/2006-06/msg00151.html>.
	Don't mistake the type of $$ in a midrule to be that of its parent
	rule's $$.
	* src/reader.c (grammar_current_rule_end): Don't invoke
	grammar_rule_check yet since not all symbol declarations may have been
	parsed yet.
	(grammar_midrule_action): Likewise.
	Don't record whether the midrule's $$ has been used yet since actions
	haven't been translated yet.
	Record the midrule's parent rule and its RHS index within the parent
	rule.
	(grammar_current_rule_action_append): Don't translate the action yet
	since not all symbol declarations may have been parsed yet and, thus,
	warnings about types for $$, $n, @$, and @n can't be reported yet.
	(packgram): Translate the action and invoke grammar_rule_check now that
	all symbol declarations have been parsed.
	* src/scan-code.l (handle_action_dollar): Now that this is invoked
	after parsing the entire grammar file, the symbol list here in the case
	of a midrule is actually the midrule's empty RHS, so reference its
	parent rule's RHS where necessary.
	On the other hand, now that you can already know it's a midrule, you
	aren't forced to think $$ has the same type as its parent rule's $$.
	(handle_action_at): In the case of a midrule, reference the parent rule
	where necessary.
	* src/symlist.c (symbol_list_new): Initialize new midrule-related
	members.
	(symbol_list_length): Now that this is invoked after all rules have
	been parsed, a NULL symbol (rather than a NULL symbol list node)
	terminates a rule.  symbol_list_print already does this correctly.
	* src/symlist.h (symbol_list.midrule_parent_rule,
	symbol_list.midrule_parent_rhs_index): New members so that midrules can
	remember their relationships with their parents.
	* tests/input.at (Type Clashes): Extend to catch the midrule $$ error
	fixed by the above patch.
	(_AT_UNUSED_VALUES_DECLARATIONS, AT_CHECK_UNUSED_VALUES): New m4 macros
	implementing...
	(Unused values): ... this old test case and...
	(Unused values before symbol declarations): ... this new test case.
	This one is the same as `Unused values' except that all symbol
	declarations appear after the rules in order to catch the rest of the
	errors fixed by the above patch.

2006-06-26  Joel E. Denny  <jdenny@ces.clemson.edu>

	More cleanup.
	* src/reader.c (current_rule): Declare it static since it's no longer
	used outside this file.
	(grammar_current_rule_action_append): Remove redundant arguments from
	translate_rule_action invocation.
	* src/reader.h (current_rule): Remove this unused extern.
	* src/scan-code.h (translate_rule_action): Remove redundant arguments.
	* src/scan-code.l (translate_rule_action): Likewise.

2006-06-25  Joel E. Denny  <jdenny@ces.clemson.edu>

	Clean up yesterday's patch.
	* parse-gram.y (rhs): Move grammar_midrule_action invocation from here
	to...
	* src/reader.c (grammar_current_rule_action_append): ... here for
	consistency with grammar_current_rule_symbol_append.
	* tests/regression.at (Braced code in declaration in rules section):
	Make yyerror and yylex static as usual.

2006-06-24  Joel E. Denny  <jdenny@ces.clemson.edu>

	Fix bug that mistakes braced code in a declaration in the rules section
	to be a rule action.  Mentioned at
	<http://lists.gnu.org/archive/html/bison-patches/2006-06/msg00105.html>.
	* src/scan-gram.l: Move midrule action detection from the start of the
	scanning of any braced code to...
	* src/parse-gram.y (rhs): ... the parsing of braced code as a rule
	action.  For readability, use $2 and @2 rather than the equivalent
	global variables.
	* tests/regression.at (Braced code in declaration in rules section):
	New test to catch the error fixed by the above patch.

	Work on code readability some.
	* src/scan-code.l (current_rule): Get rid of this misleading and
	redundant declaration: it's actually extern'ed in reader.h.
	(YY_DECL, code_lex, handle_action_dollar, handle_action_at,
	translate_action): Add a rule argument and use it instead of the global
	current_rule.
	(translate_rule_action): This already receives current_rule through an
	argument, so pass it on to translate_action instead of assigning
	current_rule to current_rule.
	(translate_symbol_action, translate_code): Pass rule = NULL to
	translate_action.

2006-06-23  Joel E. Denny  <jdenny@ces.clemson.edu>

	Rename %before-definitions to %start-header and %after-definitions to
	%end-header.  Don't use these declarations to separate pre-prologue
	blocks from post-prologue blocks.  Add new order-independent
	declarations %before-header and %after-header as alternatives to the
	traditional Yacc pre-prologue and post-prologue blocks.  Discussed at
	<http://lists.gnu.org/archive/html/bison-patches/2006-06/msg00110.html>.
	* NEWS (2.3+): Update for these changes.
	* data/glr.c (b4_before_definitions): Update to...
	(b4_start_header): ... this.
	(b4_after_definitions): Update to...
	(b4_end_header): ... this.
	* data/glr.cc: Likewise.
	* data/lalr1.cc: Likewise.
	* data/yacc.c: Likewise.
	* doc/bison.texinfo (The prologue): Update names, and replace remaining
	prologue blocks with %*-header declarations.
	(Calc++ Parser): Likewise.
	(Decl Summary): Update names.
	(Table of Symbols): Update description.
	* src/parse-gram.y (PERCENT_AFTER_DEFINITIONS): Update to...
	(PERCENT_END_HEADER): ... this.
	(PERCENT_BEFORE_DEFINITIONS): Update to...
	(PERCENT_START_HEADER): ... this.
	(PERCENT_AFTER_HEADER, PERCENT_BEFORE_HEADER): New tokens.
	(declaration): Update token names and m4 macro names.
	When parsing %end-header and %start-header, invoke translate_code
	before muscle_code_grow, and no longer set global booleans to remember
	whether these declarations have been seen.
	Parse new %after-header and %before-header.
	* src/reader.c (before_definitions, after_definitions): Remove.
	(prologue_augment): Accept a new bool argument to specify whether to
	augment the pre-prologue or post-prologue.
	* src/reader.h (before_definitions, after_definitions): Remove these
	extern's.
	(prologue_augment): Add new bool argument.
	* src/scan-gram.l (PERCENT_AFTER_DEFINITIONS): Update to...
	(PERCENT_END_HEADER): ... this.
	(PERCENT_BEFORE_DEFINITIONS): Update to...
	(PERCENT_START_HEADER): ... this.
	(PERCENT_AFTER_HEADER, PERCENT_BEFORE_HEADER): New tokens.
	* tests/actions.at (Printers and Destructors): Update names.

2006-06-22  Joel E. Denny  <jdenny@ces.clemson.edu>

	Add comparison operators for C++ location classes.  Discussed at
	<http://lists.gnu.org/archive/html/bison-patches/2006-06/msg00092.html>.
	* data/c++.m4 (b4_define_location_comparison): New boolean %define
	declaration indicating whether filename_type has an operator==.  If
	filename_type is `std::string', it defaults to `1', `0' otherwise.
	* data/location.cc: Iff b4_define_location_comparison is `1', add
	operator== and operator!= for class position and for class location.

	Some minor fixes.
	* src/scan-action.l: Remove unused file.
	* src/symtab.c (symbol_printer_set): Use printer_location not
	destructor_location.
	* src/symtab.h (struct symbol): Replace incorrect source comment for
	printer members.
	* tests/input.at (Incompatible Aliases): Update output with correct
	printer location.

2006-06-20  Joel E. Denny  <jdenny@ces.clemson.edu>

	Don't put the pre-prologue in the header file.  For the yacc.c code
	file and the glr.c header and code files, move the pre-prologue before
	the token definitions.  Add new %before-definitions and
	%after-definitions to declare code that will go in both the header file
	and code file.  Discussed at
	<http://lists.gnu.org/archive/html/bison-patches/2005-12/msg00000.html>,
	<http://lists.gnu.org/archive/html/bison-patches/2006-01/msg00016.html>,
	and
	<http://lists.gnu.org/archive/html/bison-patches/2006-06/msg00055.html>.
	* NEWS (2.3+): Describe these changes.
	* data/glr.c (b4_pre_prologue): Move from within to before...
	(b4_shared_declarations): ... this.
	Add new b4_before_definitions before b4_token_enums.
	Add new b4_after_definitions at the end.
	* data/glr.cc (b4_pre_prologue): Replace with...
	(b4_before_definitions): ... this in the header file.
	(b4_after_definitions): New near the end of the header file.
	* data/lalr1.cc (b4_pre_prologue): Move from the header file to the
	code file right before including the header file.
	(b4_before_definitions): New in the previous position of
	b4_pre_prologue in the header file.
	(b4_after_definitions): New near the end of the header file.
	* data/yacc.c: Clean up some m4 quoting especially in the header file.
	(b4_token_enums_defines): In the code file, move to right before
	YYSTYPE for consistency with the header file.
	(b4_before_definitions): New right before b4_token_enums_defines in
	both the header and code file.
	(b4_after_definitions): New right after YYLTYPE and yylloc in both the
	header and code file.
	* doc/bison.texinfo (Prologue): Show use of %before-definitions instead
	of prologues for %union dependencies.
	(Decl Summary): In %defines description, mention the effect of
	%before-definitions and %after-definitions on the header file.
	(Calc++ Parser): Forward declare driver in a %before-definitions rather
	than in the pre-prologue so that make check succeeds.
	(Table of Symbols): Add entries for %before-definitions and
	%after-definitions.
	* src/parse-gram.y (PERCENT_BEFORE_DEFINITIONS): New token for
	%before-definitions.
	(PERCENT_AFTER_DEFINITIONS): New token for %after-definitions.
	(declaration): Parse those declarations and append to
	b4_before_definitions and b4_after_definitions, respectively.
	* src/reader.c (before_definitions, after_definitions): New bools to
	track whether those declarations have been seen.
	(prologue_augment): Add to the post-prologue if %union,
	%before-definitions, or %after-definitions has been seen.
	* src/reader.h (before_definitions, after_definitions): New extern's.
	* src/scan-gram.l: Scan the new declarations.
	* tests/actions.at (_AT_CHECK_PRINTER_AND_DESTRUCTOR): Place the second
	prologue block in a %before-definitions or a %after-definitions based
	on whether the %union is declared.
	* tests/regression.at (Early token definitions with --yacc, Early token
	definitions without --yacc): Move tests for token definitions into the
	post-prologue since token names are no longer defined in the
	pre-prologue.

2006-06-20  Akim Demaille  <akim@epita.fr>

	* src/symtab.h, src/symtab.c (symbol_from_uniqstr): New.
	(symbol_get): Use it.
	* src/parse-gram.y: Use it.

2006-06-19  Joel E. Denny  <jdenny@ces.clemson.edu>

	* src/scan-gram.l: Remove unused declaration of last_string_1 so the
	build succeeds when configured with --enable-gcc-warnings.

2006-06-19  Paul Eggert  <eggert@cs.ucla.edu>

	* src/parse-gram.y (char_name): New function.
	(CHAR, STRING, string_content): For %printer, properly escape.
	(ID): Prefer fputs to fprintf.
	(id): Reindent to be consistent with other rules.
	Properly quote char.

	The Translation Project changed its way of publishing translations
	to maintainers.  I haven't received any responses to my request
	for supporting the old way, or for documenting the new way.  I
	have modified 'bootstrap' to use screen scraping
	(in this case, HTML scraping).  This is unreliable and inelegant,
	but I don't see any better way.  Yuck.
	* bootstrap (TP_URL, WGET_COMMAND): New vars.
	(get_translations): New function, which uses HTML scraping to
	deduce locations of latest translations.
	Use this function to grab both bison and bison-runtime .po files.
	Don't bother priming the pump for the runtime-po domain any more,
	as it's now translated better than bison is.

2006-06-19  Akim Demaille  <akim@epita.fr>

	* src/scan-gram.l: No longer "parse" things after `%union' until
	`{'.  Rather, return a single "%union" token.
	No longer make symbols: return strings, and leave the conversion
	to symbols to the parser.
	(SC_PRE_CODE, token_type): Remove.
	* src/parse-gram.y (%union): New field `character'.
	Sort tokens.
	(CHAR): New token.
	(ID, ID_COLON): Now that the scanner no longer makes them
	identifiers, adjust all uses to invoke symbol_get.
	(id_colon): New, wraps the conversion from string to symbol.
	(%union): Accept a possible union_name.
	(symbol): Now can be a char.
	* data/c.m4 (b4_union_name): Leave a default value.
	* data/glr.c, data/yacc.c: Use it.

2006-06-11  Joel E. Denny  <jdenny@ces.clemson.edu>

	For associating token numbers with token names for "yacc.c", don't use
	#define statements unless `--yacc' is specified; always use enum
	yytokentype.  Most important discussions start at:
	<http://lists.gnu.org/archive/html/bison-patches/2005-09/msg00053.html>,
	<http://lists.gnu.org/archive/html/bison-patches/2005-12/msg00052.html>,
	and
	<http://lists.gnu.org/archive/html/bison-patches/2006-06/msg00043.html>.
	* NEWS (2.3+): Mention.
	* data/c.m4 (b4_yacc_if): New.
	(b4_token_enums_defines): Use b4_yacc_if to decide whether to add the
	token #define's.
	* doc/bison.texinfo (Bison Options): Describe the effect of `--yacc'
	on token name definitions.
	* src/getargs.c (usage): Capitalize `Yacc' in English.
	* src/output.c (prepare): Define b4_yacc_flag.
	* tests/regression.at (Early token definitions): Test that tokens names
	are defined before the pre-prologue not just before the post-prologue.
	Remove this test case and copy to...
	(Early token definitions with --yacc): ... this to test #define's.
	(Early token definitions without --yacc): ... and this to test enums.

2006-06-11  Paul Eggert  <eggert@cs.ucla.edu>

	* NEWS: Reword the post-2.3 change to not be so optimistic about
	removing the old "look-ahead" spelling.
	Update previous look-ahead/lookahead change reports.
	* REFERENCES: look-ahead -> lookahead (since that's
	what he actually wrote).
	* doc/refcard.tex: look ahead -> lookahead,
	look-ahead -> lookahead

2006-06-09  Joel E. Denny  <jdenny@ces.clemson.edu>

	For consistency, use `lookahead' instead of `look-ahead' or
	`look_ahead'.  Discussed starting at
	<http://lists.gnu.org/archive/html/bison-patches/2006-01/msg00049.html>
	and then at
	<http://lists.gnu.org/archive/html/bison-patches/2006-06/msg00017.html>.
	* NEWS: For the next release, note the change to `--report'.
	* TODO, doc/bison.1: Update English.
	* doc/bison.texinfo: Update English.
	(Understanding Your Parser, Bison Options): Document as
	`--report=lookahead' rather than `--report=look-ahead'.
	* src/conflicts.c: Update English in comments.
	(lookahead_set): Rename from look_ahead_set.
	(flush_reduce): Rename argument look_ahead_tokens to lookahead_tokens.
	(resolve_sr_conflict): Rename local look_ahead_tokens to
	lookahead_tokens, and update other uses.
	(flush_shift, set_conflicts, conflicts_solve, count_sr_conflicts,
	count_rr_conflicts, conflicts_free): Update uses.
	* src/getargs.c (report_args): Move "lookahead" before alternate
	spellings.
	(report_types): Update uses.
	(usage): For `--report' usage description, state `lookahead' spelling
	rather than `look-ahead'.
	* src/getargs.h (report.report_lookahead_tokens): Rename from
	report_look_ahead_tokens.
	* src/lalr.c: Update English in comments.
	(compute_lookahead_tokens): Rename from compute_look_ahead_tokens.
	(state_lookahead_tokens_count): Rename from
	state_look_ahead_tokens_count.
	Rename local n_look_ahead_tokens to n_lookahead_tokens.
	(lookahead_tokens_print): Rename from look_ahead_tokens_print.
	Rename local n_look_ahead_tokens to n_lookahead_tokens.
	Update other uses.
	Update English in output.
	(add_lookback_edge, initialize_LA, lalr, lalr_free): Update uses.
	* src/print.c: Update English in comments.
	(lookahead_set): Rename from look_ahead_set.
	(print_reduction): Rename argument lookahead_token from
	look_ahead_token.
	(print_core, state_default_rule, print_reductions, print_results):
	Update uses.
	* src/print_graph.c: Update English in comments.
	(print_core): Update uses.
	* src/state.c: Update English in comments.
	(reductions_new): Update uses.
	(state_rule_lookahead_tokens_print): Rename from
	state_rule_look_ahead_tokens_print, and update other uses.
	* src/state.h: Update English in comments.
	(reductions.lookahead_tokens): Rename from look_ahead_tokens.
	(state_rule_lookahead_tokens_print): Rename from
	state_rule_look_ahead_tokens_print.
	* src/tables.c: Update English in comments.
	(conflict_row, action_row): Update uses.
	* tests/glr-regression.at
	(Incorrect lookahead during deterministic GLR,
	Incorrect lookahead during nondeterministic GLR): Rename
	print_look_ahead to print_lookahead.
	* tests/torture.at: Update English in comments.
	(AT_DATA_LOOKAHEAD_TOKENS_GRAMMAR): Rename from
	AT_DATA_LOOK_AHEAD_TOKENS_GRAMMAR.
	(Many lookahead tokens): Update uses.
	* data/glr.c: Update English in comments.
	* lalr1.cc: Likewise.
	* yacc.c: Likewise.
	* src/conflicts.h: Likewise.
	* src/lalr.h: Likewise.
	* src/main.c: Likewise.
	* src/output.c: Likewise.
	* src/parse-gram.c: Likewise.
	* src/tables.h: Likewise.
	* tests/calc.at: Likewise.

2006-06-08  Joel E. Denny  <jdenny@ces.clemson.edu>

	* src/flex-scanner.h (yytext): Remove stray `*/' in #define.

2006-06-07  Paul Eggert  <eggert@cs.ucla.edu>

	* TODO: Add request from Nelson H. F. Beebe to be able to install
	Bison without installing the yacc script.

2006-06-07  Joel E. Denny  <jdenny@ces.clemson.edu>

	* src/flex-scanner.h: For the sake of Flex 2.5.4, don't #define yyleng
	and yytext if they're already #define'd.
	* src/flex-scanner.h, src/location.h: Move #include "system.h" to...
	* src/scan-code-c.c: ... here.
	* src/scan-code.l, src/scan-gram.l: ... and here.  Also #include
	<config.h>.

2006-06-07  Joel E. Denny  <jdenny@ces.clemson.edu>

	Get Bison to build again when configured with --enable-gcc-warnings.
	* src/location.c, src/location.h, src/main.c, src/scan-code.l: Add some
	missing #include's.
	* src/scan-code.l (handle_action_dollar, handle_action_at): Rename
	loc argument as it shadows a global.
	* src/scan-gram.l: Remove stray comma that prevents boundary_set
	invocation.

	* src/.cvsignore: Add scan-code.c.

2006-06-07  Akim Demaille  <akim@epita.fr>

	* src/scan-gram.l: Move the "add a trailing ; to actions" code
	to...
	* src/scan-code.l: here.
	* tests/input.at (Torturing the Scanner): Fix another location
	error.

2006-06-07  Akim Demaille  <akim@epita.fr>

	* src/Makefile.am (BUILT_SOURCES): Fix the trailing backslash.

2006-06-06  Akim Demaille  <akim@epita.fr>

	Extract the parsing of user actions from the grammar scanner.
	As a consequence, the relation between the grammar scanner and
	parser is much simpler.  We can also split "composite tokens" back
	into simple tokens.
	* src/gram.h (ITEM_NUMBER_MAX, RULE_NUMBER_MAX): New.
	* src/scan-gram.l (add_column_width, adjust_location): Move to and
	rename as...
	* src/location.h, src/location.c (add_column_width)
	(location_compute): these.
	Fix the column count: the initial column is 0.
	(location_print): Be robust to ending column being 0.
	* src/location.h (boundary_set): New.
	* src/main.c: Adjust to scanner_free being renamed as
	gram_scanner_free.
	* src/output.c: Include scan-code.h.
	* src/parse-gram.y: Include scan-gram.h and scan-code.h.
	Use boundary_set.
	(PERCENT_DESTRUCTOR, PERCENT_PRINTER, PERCENT_INITIAL_ACTION)
	(PERCENT_LEX_PARAM, PERCENT_PARSE_PARAM): Remove the {...} part,
	which is now, again, a separate token.
	Adjust all dependencies.
	Whereever actions with $ and @ are used, use translate_code.
	(action): Remove this nonterminal which is now useless.
	* src/reader.c: Include assert.h, scan-gram.h and scan-code.h.
	(grammar_current_rule_action_append): Use translate_code.
	(packgram): Bound check ruleno, itemno, and rule_length.
	* src/reader.h (gram_in, gram__flex_debug, scanner_cursor)
	(last_string, last_braced_code_loc, max_left_semantic_context)
	(scanner_initialize, scanner_free, scanner_last_string_free)
	(gram_out, gram_lineno, YY_DECL_): Move to...
	* src/scan-gram.h: this new file.
	(YY_DECL): Rename as...
	(GRAM_DECL): this.
	* src/scan-code.h, src/scan-code.l, src/scan-code-c.c: New.
	* src/scan-gram.l (gram_get_lineno, gram_get_in, gram_get_out):
	(gram_get_leng, gram_get_text, gram_set_lineno, gram_set_in):
	(gram_set_out, gram_get_debug, gram_set_debug, gram_lex_destroy):
	Move these declarations, and...
	(obstack_for_string, STRING_GROW, STRING_FINISH, STRING_FREE):
	these to...
	* src/flex-scanner.h: this new file.
	* src/scan-gram.l (rule_length, rule_length_overflow)
	(increment_rule_length): Remove.
	(last_braced_code_loc): Rename as...
	(gram_last_braced_code_loc): this.
	Adjust to the changes of the parser.
	Move all the handling of $ and @ into...
	* src/scan-code.l: here.
	* src/scan-gram.l (handle_dollar, handle_at): Remove.
	(handle_action_dollar, handle_action_at): Move to...
	* src/scan-code.l: here.
	* src/Makefile.am (bison_SOURCES): Add flex-scanner.h,
	scan-code.h, scan-code-c.c, scan-gram.h.
	(EXTRA_bison_SOURCES): Add scan-code.l.
	(BUILT_SOURCES): Add scan-code.c.
	(yacc): Be robust to white spaces.

	* tests/conflicts.at, tests/input.at, tests/reduce.at,
	* tests/regression.at: Adjust the column numbers.
	* tests/regression.at: Adjust the error message.

2006-06-06  Joel E. Denny  <jdenny@ces.clemson.edu>

	* src/getargs.c (usage): Mention GLR not just LALR(1) in --help output.
	Use Akim's wording from
	<http://lists.gnu.org/archive/html/bison-patches/2006-05/msg00056.html>.

2006-06-06  Joel E. Denny  <jdenny@ces.clemson.edu>

	Between Bison releases, manually append `+' to the previous Bison
	release number, and use that as a signal to automatically print the
	ChangeLog's CVS Id keyword from --version.  Discussed starting at
	<http://lists.gnu.org/archive/html/bison-patches/2006-05/msg00028.html>.
	* ChangeLog: Add Id header.
	* configure.ac (AC_INIT): Append `+' to `2.3'.
	* src/.cvsignore: Add revision.c.
	* src/Makefile.am (bison_SOURCES): Add revision.c and revision.h.
	(BUILT_SOURCES): Add revision.c.
	(revision.c): New target rule.  This file defines a new global variable
	named revision.  It initializes it with either the Id from ChangeLog
	or, if VERSION doesn't contain `+', with the empty string.
	* src/getargs.c (version): Print the value of revision.
	* src/revision.h: Extern revision.

2006-06-05  Paul Eggert  <eggert@cs.ucla.edu>

	* NEWS: Version 2.3.
	* configure.ac (AC_INIT): Likewise.

2006-05-30  Paul Eggert  <eggert@cs.ucla.edu>

	* data/glr.c (YYRECOVERING): Define to be a function-like macro
	with no arguments, not as an object-like macro.  This is for
	compatibility with data/yacc.c.  Problem reported by John P. Hartmann in
	<http://lists.gnu.org/archive/html/bug-bison/2006-05/msg00059.html>.
	* doc/bison.texinfo (Action Features, Error Recovery, Table of Symbols):
	Document this.

2006-05-30  Joel E. Denny  <jdenny@ces.clemson.edu>

	* src/getargs.c (usage): Back out yesterday's modification of the
	--help output so that we don't have to wait for translation before
	releasing 2.3.

2006-05-29  Paul Eggert  <eggert@cs.ucla.edu>

	* doc/bison.texinfo (Introduction): Don't say "GLR grammar".
	Problem reported by Akim Demaille.

2006-05-29  Joel E. Denny  <jdenny@ces.clemson.edu>

	* src/getargs.c (usage): Mention GLR not just LALR(1) in --help output.

2006-05-26  Paul Eggert  <eggert@cs.ucla.edu>

	* data/yacc.c (yy_reduce_print): Omit trailing white space in
	generated source code.  Problem reported by Frans Englich in
	<http://lists.gnu.org/archive/html/bug-bison/2006-05/msg00049.html>.

2006-05-22  Paul Eggert  <eggert@cs.ucla.edu>

	* Makefile.maint (gzip_rsyncable, GZIP_ENV): Compute within the
	shell, not within 'make', so that 'make' by an ordinary builder
	(using GNU make) does not worry about configuring gzip.  This also
	works around a bug reported independently by Keith Thompson and by
	Georg Schwarz, whereby gzip 1.2.4 --help would output usage on