X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/5f5a90dff6b40a1a1e980680e078d7e2799d9bc2..c61d4fa1d0307fdfd88dcd74ce19e6bb14b0a813:/ChangeLog?ds=sidebyside

diff --git a/ChangeLog b/ChangeLog
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+++ b/ChangeLog
@@ -1,3 +1,2586 @@
+2010-07-29  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	maint: enable gnits only at stable releases.
+	* configure.ac (AM_INIT_AUTOMAKE): Underscore or dash in a
+	version string should disable gnits.  Explain in comments.
+
+2010-07-28  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	i18n: update.
+	* po/POTFILES.in: Add src/graphviz.c.
+
+2010-07-28  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	i18n: fix for gnulib.
+	* po/POTFILES.in: Add remaining gnulib files that have
+	translatable strings.
+
+2010-07-25  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	build: fix our adjustments for gnulib files in lib.
+	* configure.ac: For prepending lib/ to the values of config
+	variables, fix detection of empty values.  Also, due to recent
+	gnulib changes, add LIBUNISTRING_UNITYPES_H and
+	LIBUNISTRING_UNIWIDTH_H to the list of those variables.
+
+2010-07-25  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	maint: use announce-gen's new --mail-headers.
+	* HACKING (Announce): Update instructions.
+	* cfg.mk (announcement_Cc_): Define.
+	* configure.ac (AM_GNU_GETTEXT_VERSION): Update to 0.18 as
+	required by latest gnulib.
+	* gnulib: Update to latest.
+
+2010-07-24  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	tests: handle Valgrind that complains about >&-.
+	* tests/output.at (AT_CHECK_OUTPUT): Extend to accept pre-tests.
+	(Output files: -dv >&-): Skip test group if running
+	maintainer-check-valgrind.
+
+2010-07-23  Paul Hilfinger  <hilfingr@EECS.Berkeley.EDU>
+
+	* NEWS: Describe new semantic-predicate feature.
+        * data/c.m4 (b4_predicate_case): New definition.
+        * data/java.m4 (b4_predicate_case): New definition.
+        * data/glr.c (yyimmediate): Add definition.
+        (yydoAction): Remove comment, now obsolete.
+        Do YY_REDUCE_PRINT here.
+        (yyglrReduce): Alter comment to indicate that semantic values
+        need not be deferred.
+        Remove YY_REDUCE_PRINT from here; done in yydoAction.
+        (yyprocessOneStack): Pass immediate flag.
+        Delete stacks rejected by predicates in newly split-off parsers.
+        Change handling of yyerr so that only current stack gets deleted
+        when semantic predicate fails.
+        (yyfillin): Don't crash if a semantic value is unresolved (as may
+        happen in predicate rules).
+        Copy lr state as well in debugging mode.
+        Update comment on setting of yysval to include yyloc as well.
+        (yy_reduce_print): Add yynormal argument.  Perform fillin properly.
+        Report unresolved RHS values.
+        (yyimmediate): New table.
+        * src/gram.h (struct rule): Add is_predicate field.
+        * src/output.c (user_actions_output): Use b4_predicate_case for
+        predicates.
+        (prepare_symbols): Output yyimmediate.
+        * src/scan-gram.l: Add %? token, SC_PREDICATE state.
+        * src/scan-code.l (code_props_rule_action_init): Add is_predicate
+        argument.
+        * src/scan-code.h (struct code_props): Add is_predicate field.
+        (code_props_rule_action_init): New interface.
+        * src/parse-gram.y (%?{...}): New token.
+        (rhs): Add %?{...} rule.
+        * src/parse-gram.c: Regenerate.
+        * src/parse-gram.h: Regenerate.
+        * src/reader.c (grammar_current_rule_action_append): Add
+        immediate argument.
+        (grammar_midrule_action): Use new interface for
+        code_props_rule_action_init.
+        (grammar_current_rule_action_append): Ditto.
+        (packgram): Transfer is_predicate value.
+        * src/reader.h (grammar_current_rule_action_append): New interface.
+        * doc/bison.texinfo: Document semantic predicates (%?).
+    
+        * data/glr.c (yylhsNonterm, yyisDefaultedState,yyDefaultAction)
+        (yygetLRActions,yynewGLRStackItem,yyaddDeferredAction,yyinitStateSet)
+        (yyinitGLRStack,yyexpandGLRStack,yyupdateSplit,yymarkStackDeleted)
+        (yyundeleteLastStack,yyglrShift,yyglrShiftDefer,yydoAction,yyglrReduce)
+        (yyidenticalOptions,yymergeOptionSets,yyresolveStates,yyresolveAction)
+        (yyresolveLocations,yyresolveValue,yyreducePrint): Update parameter
+        names in comments and mention all parameters.
+        (struct yyGLRState): Fix description of yyposn field.
+        (yyresolveLocations): Correct comment so as not to imply action when
+        yyn1==0.
+	
+2010-06-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Update from GFDL GFDL 1.2 to 1.3.
+	* doc/bison.texinfo: Update GFDL version number.
+	* doc/fdl.texi: Update to version 1.3, taken from:
+	http://www.gnu.org/licenses/fdl.texi
+
+	Do not use date ranges in copyright notices.
+	See http://www.gnu.org/prep/maintain/maintain.html#Copyright-Notices
+
+	* HACKING, Makefile.am, NEWS, PACKAGING, README, README-alpha:
+	* TODO, bootstrap, bootstrap.conf:
+	* build-aux/update-b4-copyright, cfg.mk, configure.ac:
+	* 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/local.mk, data/location.cc:
+	* data/stack.hh, data/variant.hh, data/xslt/bison.xsl:
+	* data/xslt/xml2dot.xsl, data/xslt/xml2text.xsl:
+	* data/xslt/xml2xhtml.xsl, data/yacc.c, djgpp/Makefile.maint:
+	* djgpp/README.in, djgpp/config.bat, djgpp/config.sed:
+	* djgpp/config.site, djgpp/config_h.sed, djgpp/djunpack.bat:
+	* djgpp/local.mk, djgpp/subpipe.c, djgpp/subpipe.h:
+	* djgpp/testsuite.sed, doc/bison.texinfo, doc/local.mk:
+	* doc/refcard.tex, etc/README, etc/bench.pl.in, etc/local.mk:
+	* examples/calc++/Makefile.am, examples/extexi:
+	* examples/local.mk, 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/local.mk, lib/main.c, lib/timevar.c:
+	* lib/timevar.def, lib/timevar.h, lib/vbitset.c:
+	* lib/vbitset.h, lib/yyerror.c, m4/bison-i18n.m4:
+	* m4/c-working.m4, m4/cxx.m4, m4/subpipe.m4, m4/timevar.m4:
+	* src/AnnotationList.c, src/AnnotationList.h:
+	* src/InadequacyList.c, src/InadequacyList.h, src/LR0.c:
+	* src/LR0.h, src/Sbitset.c, src/Sbitset.h, 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/ielr.c:
+	* src/ielr.h, src/lalr.c, src/lalr.h, src/local.mk:
+	* src/location.c, src/location.h, src/main.c:
+	* src/muscle-tab.c, src/muscle-tab.h, src/named-ref.c:
+	* src/named-ref.h, src/nullable.c, src/nullable.h:
+	* src/output.c, src/output.h, src/parse-gram.y:
+	* src/print-xml.c, src/print-xml.h, 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/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/actions.at, tests/atlocal.in, 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/local.mk, tests/named-refs.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:
+	Don't use date ranges in copyright notices.
+
+2010-05-11  Akim Demaille  <demaille@gostai.com>
+
+	lalrl1.cc: give a chance to user defined YYLLOC_DEFAULT.
+	* data/lalr1.cc (YYLLOC_DEFAULT): Move its definition from the
+	header file to the implementation file, after the user %code
+	sections.
+	* NEWS (2.5): Document this.
+
+2010-05-11  Akim Demaille  <demaille@gostai.com>
+
+	doc: please Emacs.
+	* doc/bison.texinfo (Local Variables): Move this after the
+	LocalWords, since the latter are looked for in the whole document,
+	while the former are looked for only at its end.
+	Require american spell checking.
+
+2010-05-10  Akim Demaille  <demaille@gostai.com>
+
+	doc: fix lalr1.cc documentation.
+	* doc/bison.texinfo (C++ Scanner Interface): Fix yylex signature.
+	(C++ Bison Interface): Fix lalr1.cc skeleton name.
+	(C++ Parser Interface): Fix semantic_type and location_type names.
+	Document yy::parser::token.
+	Reported by Jerry Quinn.
+
+2010-05-10  Akim Demaille  <demaille@gostai.com>
+
+	c++: use YYRHSLOC.
+	* data/lalr1.cc (YYRHSLOC): New.
+	(YYLLOC_DEFAULT): Use it.
+	* data/glr.cc: If location_type was user defined, do not include
+	location.hh, and do not produce location.hh and position.hh.
+	* tests/calc.at (YYLLOC_DEFAULT): Use YYRHSLOC.
+	Check that glr.cc supports user defined location_type.
+	* NEWS: Document this.
+
+2010-05-07  Akim Demaille  <demaille@gostai.com>
+
+	doc: fix typo.
+	* tests/synclines.at: here.
+
+2010-05-04  Akim Demaille  <demaille@gostai.com>
+
+	tests: enhance AT_SYNCLINES_COMPILE.
+	* tests/synclines.at (AT_SYNCLINES_COMPILE): More distcc patterns.
+	(AT_TEST_SYNCLINE): Remove GCC 4.5 protection which is already
+	taken care of in AT_SYNCLINES_COMPILE.
+
+2010-05-04  Akim Demaille  <demaille@gostai.com>
+
+	lalr1.cc: don't generate location.hh when location_type is defined
+	* data/bison.m4 (b4_percent_define_get): Accept a default value.
+	* data/c++.m4: Do not provide a default value for the %define
+	variable location_type, rather, use b4_percent_define_get with a
+	default argument where its value is needed.
+	* data/lalr1.cc: Do not load location.cc (which outputs both
+	location.hh and position.hh) if the user defined location_type.
+	Do not include location.hh either.
+
+2010-05-04  Akim Demaille  <demaille@gostai.com>
+
+	lalr1.cc: minor refactoring.
+	* data/lalr1.cc: Don't issue empty namespaces.
+
+2010-05-04  Akim Demaille  <demaille@gostai.com>
+
+	tests: fix %printer.
+	Currently, there is no check that %printer ... <foo> (nor
+	%destructor) is about an existing <foo> type.  This C++ test had
+	it wrong (<::std::string> vs. <std::string>).
+
+	* tests/c++.at (AT_CHECK_VARIANTS): In list.yy, redefine the
+	pretty-printing of lists into something better for parser traces.
+	Update the expected output.
+	Fix correspondance between %type/%token and %printer.
+
+2010-05-04  Akim Demaille  <demaille@gostai.com>
+
+	lalr1.cc: location_type: make sure we don't depend on loc.(begin|end).
+	* tests/calc.at (Span): Instead of begin/end, as in the built-in
+	location class, use first and last.
+	Define YYLLOC_DEFAULT to adjust to these changes.
+	* tests/local.at (_AT_BISON_OPTION_PUSHDEFS): Adjust to the
+	location_type changes.
+
+2010-05-01  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	tests: fix maintainer-xml-check.
+	* data/xslt/xml2dot.xsl (xsl:template match="bison-xml-report"):
+	Update output to include comments now produced by --graph.
+	(xsl:template match="automaton"): As for --graph, name the
+	digraph after the grammar file.
+	* src/print-xml.c (escape_bufs): Enlarge array.
+	(print_xml): Add bug-report and url attributes to
+	bison-xml-report element.
+
+2010-05-01  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	In DOT output, convert from "/*" comments to "//" comments.
+	This handles the possibility that a "*/" might appear in
+	variable portions of those comments at some point in the future.
+	* src/graphviz.c (start_graph): Implement.
+
+2010-04-30  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	Document that undefined %prec identifier warnings will remain.
+	* NEWS (2.4.3): Here.
+	(2.4.2): Here.
+
+2010-04-30  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	Revert 2009-12-30 change for undefined %prec token complaints.
+	That is, keep them as warnings because that should be sufficient
+	to satisfy POSIX without creating backward compatibility issues.
+	Suggested by Richard Stallman at
+	<http://lists.gnu.org/archive/html/bison-patches/2010-03/msg00033.html>.
+	* NEWS (2.5): Remove mention of complaint.
+	* src/reader.c (grammar_rule_check): Convert complaint back to
+	warning.
+	* tests/input.at (%prec's token must be defined): Update.
+
+2010-04-25  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	build: don't require src/bison during bootstrap.
+	Suggested by Eric Blake at
+	<http://lists.gnu.org/archive/html/bug-bison/2010-03/msg00003.html>.
+	* bootstrap.conf (bootstrap_epilogue): New function to make sure
+	src/parse-gram.[ch] are stamped later than src/parse-gram.y.
+
+2010-04-25  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	i18n: fix untranslatable string.
+	Reported by Goran Uddeborg at
+	<http://lists.gnu.org/archive/html/bug-bison/2010-03/msg00000.html>.
+	* src/muscle-tab.c (muscle_percent_define_insert): Here.
+
+2010-04-13  Akim Demaille  <demaille@gostai.com>
+
+	tests: calc: minor refactoring.
+	* tests/calc.at (_AT_DATA_CALC_Y): Simplify yylex.
+
+2010-04-13  Akim Demaille  <demaille@gostai.com>
+
+	tests: calc: simplify location management.
+	* tests/local.at (AT_LOC_PUSHDEF, AT_LOC_POPDEF): New.
+	(_AT_BISON_OPTION_PUSHDEFS, AT_BISON_OPTION_POPDEFS): Use them to
+	define the appropriate AT_LOC accessors.
+	* tests/calc.at: Use AT_LOC accessors.
+
+2010-04-13  Akim Demaille  <demaille@gostai.com>
+
+	test location_type.
+	* tests/local.at (_AT_BISON_OPTION_PUSHDEFS):
+	Define AT_LOCATION_TYPE_IF.
+	(_AT_BISON_OPTION_POPDEFS): Undefine AT_LOCATION_TYPE_IF.
+	* tests/calc.at (_AT_DATA_CALC_Y): When %define location_type is
+	used, provide a user location type and use it.
+	(Simple LALR1 C++ Calculator): Add a test case for location_type.
+
+2010-04-13  Akim Demaille  <demaille@gostai.com>
+
+	tests: check fclose's return value.
+	* tests/calc.at (_AT_DATA_CALC_Y): Check fclose's return status.
+
+2010-04-13  Akim Demaille  <demaille@gostai.com>
+
+	tests: don't depend on the actual location type.
+	* tests/calc.at: Use yy::parser::location_type rather than
+	yy::location, since the former is always right, and might point to
+	another type than the latter.
+
+2010-04-13  Akim Demaille  <demaille@gostai.com>
+
+	formatting changes.
+	* tests/calc.at: Formatting changes.
+
+2010-04-13  Akim Demaille  <demaille@gostai.com>
+
+	lalr1.cc: remove useless forward declaration.
+	* data/lalr1.cc: Include location.hh before stack.hh.
+	Remove the useless forward declarations of position and location.
+	Reported by Chris Morley.
+	* data/glr.cc: Likewise.
+
+2010-04-11  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	* NEWS (2.4.3): Mention fix for Sun Studio C++.
+
+2010-04-10  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	tests: fix for newer Sun Studio C++.
+	Reported by Dagobert Michelsen at
+	<http://lists.gnu.org/archive/html/bug-bison/2010-03/msg00023.html>.
+	* THANKS (Dagobert Michelsen): Add.
+	* configure.ac (AC_PREREQ): Set to 2.64 so we get the latest
+	Autoconf macro for handling the restrict keyword.
+	* gnulib: Update to latest, which no longer overrides that macro
+	from Autoconf.
+
+2010-04-03  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	portability: fix pointer arithmetic to conform to C standard.
+	Reported by Tys Lefering at
+	<http://lists.gnu.org/archive/html/bug-bison/2010-03/msg00035.html>.
+	This fix is already implemented in glr.c and does not apply to
+	lalr1.java.
+	* data/lalr1.cc (yy::parser::parse): Increase size of
+	yyerror_range and adjust subscripting so you don't have to
+	subtract one from the beginning of the array.
+	* data/yacc.c (b4_declare_parser_state_variables,
+	yyparse, yypush_parse): Likewise.
+
+2010-04-05  Akim Demaille  <demaille@gostai.com>
+
+	remove useless include.
+	* src/graphviz.h: Don't include stdbool.h.
+
+2010-04-05  Akim Demaille  <demaille@gostai.com>
+
+	graph: sign the output file.
+	* src/graphviz.c (start_graph): Issue comments about Bison.
+	Suggested by Tys Lefering.
+
+2010-03-31  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	portability: fix test suite for GCC 4.5's new #error message.
+	Reported by Tys Lefering at
+	<http://lists.gnu.org/archive/html/bug-bison/2010-03/msg00030.html>.
+	* NEWS (2.4.3): Mention.
+	* tests/synclines.at (AT_TEST_SYNCLINE): Implement.
+
+2010-03-30  Akim Demaille  <demaille@gostai.com>
+
+	fix comments.
+	* src/graphviz.h: Add missing license notice.
+	Document.
+
+2010-03-25  Akim Demaille  <demaille@gostai.com>
+
+	tests: fix 250: parse.error=verbose overflow.
+	* tests/regression.at (parse.error=verbose overflow): Avoid the
+	double inclusion of stdlib.h as it triggers hard errors.
+
+2010-03-23  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	portability: fix for BSD make.
+	Reported by Johan van Selst at
+	<http://lists.gnu.org/archive/html/bug-bison/2010-03/msg00016.html>.
+	* tests/local.mk ($(TESTSUITE)): Qualify package.m4 in
+	this dependency list as in package.m4's target rule.
+
+2010-03-23  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	portability: fix spawning on at least FreeBSD 8 and FreeBSD 9.
+	Reported by Johan van Selst at
+	<http://lists.gnu.org/archive/html/bug-bison/2010-03/msg00014.html>.
+	* NEWS (2.4.3): New.
+	* THANKS (Johan van Selst): Add.
+	* etc/prefix-gnulib-mk (prefix): Adjust regex for makefile
+	targets so that gnulib's new c++defs.h is matched.
+	* gnulib: Update to latest.
+
+2010-03-20  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	maint: update for changes to gnulib's announce-gen.
+	* HACKING (Announce): RELEASE_TYPE=major must now be written
+	RELEASE_TYPE=stable.
+
+2010-03-20  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Version 2.4.2.
+	* NEWS (2.4.2): Set version and date.  For the recent test suite
+	portability fixes, don't be so optimistic about their success
+	given the lack of feedback on the affected platforms.
+
+2010-02-22  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	tests: fix maintainer-xml-check for recent changes.
+	* tests/output.at (AT_CHECK_CONFLICTING_OUTPUT): Use
+	AT_BISON_CHECK_NO_XML rather than AT_BISON_CHECK because an
+	output file whose name conflicts with a previous output file
+	is now never generated.
+
+2010-02-22  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	portability: fix several issues with M4 subprocess.
+
+	M4's output pipe was not being drained upon fatal errors during
+	scan_skel.  As a result, broken-pipe messages from M4 were seen
+	on at least AIX, HP-UX, Solaris, and RHEL4, and this caused a
+	failure in the test suite.  The problem was that, on platforms
+	where the default disposition for SIGPIPE is ignore instead of
+	terminate, M4 sometimes saw fwrite fail with errno=EPIPE and
+	then reported it.  However, there's some sort of race condition,
+	because the new test group occasionally succeeded.
+	Reported by Albert Chin at
+	<http://lists.gnu.org/archive/html/bug-bison/2010-02/msg00004.html>.
+
+	There were also problems with the test suite livelocking on
+	Tru64 5.1b.  Reported by Didier Godefroy at
+	<http://lists.gnu.org/archive/html/bug-bison/2009-05/msg00005.html>.
+	Switching to create_pipe_bidi suggested by Akim Demaille.
+
+	To attempt to solve both of these problems, switch to gnulib's
+	create_pipe_bidi and register M4 process as a slave.  Along the
+	way, clean up file name conflict handling, which was affected by
+	the broken-pipe problem before the switch.
+	* NEWS (2.4.2): Document.
+	* THANKS (Didier Godefroy): Add.
+	* bootstrap.conf (gnulib_modules): Add pipe.
+	* gnulib: Update to latest to make sure we have all the latest
+	fixes.
+	* lib/local.mk (lib_libbison_a_SOURCES): Remove subpipe.h and
+	subpipe.c.
+	* po/POTFILES.in (lib/subpipe.c): Remove.
+	* src/files.c (compute_output_file_names): Update invocations
+	of output_file_name_check.
+	(output_file_name_check): In the case that the grammar file
+	would be overwritten, use complain instead of fatal, but replace
+	the output file name with /dev/null.  Use the /dev/null solution
+	for the case of two conflicting output files as well because it
+	seems safer in case Bison one day tries to open both files at
+	the same time.
+	* src/files.h (output_file_name_check): Update prototype.
+	* src/output.c (output_skeleton): Use create_pipe_bidi and
+	wait_subprocess.  Assert that scan_skel completely drains the
+	pipe.
+	* src/scan-skel.l (at_directive_perform): Update
+	output_file_name_check invocation.
+	* tests/output.at (AT_CHECK_CONFLICTING_OUTPUT): Check that the
+	grammar file actually isn't overwritten.
+	(Conflicting output files: -o foo.y): Update expected output.
+	* tests/skeletons.at (Fatal errors but M4 continues producing
+	output): New test group.
+
+2010-02-04  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Update POTFILES.
+	* HACKING (Release Procedure): Add reminder about keeping
+	POTFILES files up-to-date.
+	* po/POTFILES.in (src/muscle-tab.c, src/scan-skel.l): Add.
+
+2010-02-01  Joel E. Denny  <jdenny@clemson.edu>
+
+	Code cleanup.
+	* tests/atlocal.in (abs_top_srcdir): Remove shell variable,
+	which is already defined in atconfig.
+
+2010-01-22  Joel E. Denny  <jdenny@clemson.edu>
+
+	tests: fix missing include caught by g++ 4.4.1.
+	Reported by Tys Lefering.
+	* HACKING (Release checks): Add note about trying a recent GCC.
+	* tests/regression.at (_AT_DATA_DANCER_Y): For C++, include
+	cstdlib for abort.
+	(_AT_DATA_EXPECT2_Y): Likewise.
+
+2010-01-21  Joel E. Denny  <jdenny@clemson.edu>
+
+	* cfg.mk (gnulib_dir): Assume gnulib is a subdirectory.
+
+2010-01-21  Joel E. Denny  <jdenny@clemson.edu>
+
+	maint: automate PACKAGE_COPYRIGHT_YEAR update, and update it.
+	* HACKING (Release Procedure): Update notes on copyright years.
+	* Makefile.am (update-package-copyright-year): New target rule.
+	* build-aux/update-package-copyright-year: New file.
+	* cfg.mk (update-copyright): Add update-package-copyright-year
+	as a dependency.
+
+2010-01-19  Joel E. Denny  <jdenny@clemson.edu>
+
+	* bootstrap: Import improvements from latest gnulib.
+
+2010-01-19  Joel E. Denny  <jdenny@clemson.edu>
+
+	build: require Automake 1.11.1 to avoid a security flaw.
+	* HACKING (Release Procedure): Don't document Automake security
+	flaw here.
+	* configure.ac (AM_INIT_AUTOMAKE): Require 1.11.1, and explain
+	why here.
+
+2010-01-19  Joel E. Denny  <jdenny@clemson.edu>
+
+	gnulib: update to latest.
+
+2010-01-19  Joel E. Denny  <jdenny@clemson.edu>
+
+	ChangeLog (2006-09-15): add Odd Arild Olsen's role for push.c.
+
+2010-01-15  Joel E. Denny  <jdenny@clemson.edu>
+
+	Thank the developer of the initial push parser implementation.
+	This unfortunate oversight is several years old.
+	* THANKS (Odd Arild Olsen): Add.
+
+2010-01-04  Joel E. Denny  <jdenny@clemson.edu>
+
+	Fix some comments concerning LR(0) versus LALR(1).
+
+	Stop equating LR(0) with nondeterminism and LALR(1) with
+	determinism.  That is, if all states are consistent, then LR(0)
+	tables are deterministic.  On the other hand, LALR(1) tables
+	might be nondeterministic before conflict resolution, and GLR
+	permits LALR(1) tables to remain nondeterministic.
+	* src/LR0.c, src/LR0.h: Here.
+	* src/lalr.c, src/lalr.h: Here.
+	* src/main.c (main): Here.
+	* src/state.c, src/state.h: Here.
+
+	* src/ielr.h (ielr): In preconditions, expect LR(0) not LALR(1)
+	parser tables.
+
+2010-01-04  Joel E. Denny  <jdenny@clemson.edu>
+
+	maint: run "make update-copyright"
+
+2009-12-30  Joel E. Denny  <jdenny@clemson.edu>
+
+	POSIX: complain if %prec's token was not defined.
+	* NEWS (2.5): Document.
+	* src/reader.c (grammar_rule_check): Convert warning to
+	complaint.
+	* tests/input.at (%prec's token must be defined): Update.
+
+2009-12-30  Joel E. Denny  <jdenny@clemson.edu>
+
+	POSIX: warn if %prec's token was not defined.
+	Reported by Florian Krohm at
+	<http://lists.gnu.org/archive/html/bug-bison/2009-12/msg00005.html>.
+	* NEWS (2.4.2): Document.
+	* src/reader.c (grammar_rule_check): Implement.
+	(grammar_current_rule_prec_set): Add comments explaining that we
+	here assume a %prec identifier is a token, but we still manage
+	to support POSIX.
+	* tests/input.at (%prec's token must be defined): New test
+	group.
+
+2009-12-31  Joel E. Denny  <jdenny@clemson.edu>
+
+	* HACKING (Release Procedure): Recommend a secure automake.
+
+2009-12-29  Joel E. Denny  <jdenny@clemson.edu>
+
+	portability: `<' and `>' are not always defined on addresses.
+	Specifically, don't sort objects by their memory addresses when
+	they're not allocated in the same array or other object.  Though
+	I haven't found a test case where that fails on my platform, C
+	says the behavior is undefined.
+	* src/AnnotationList.c (AnnotationList__insertInto): Remove
+	FIXME.  Use new id field of InadequacyList nodes rather than
+	their memory addresses when sorting.
+	(AnnotationList__compute_from_inadequacies): Add
+	inadequacy_list_node_count argument to pass to
+	InadequacyList__new_conflict.
+	* src/AnnotationList.h
+	(AnnotationList__compute_from_inadequacies): Update prototype
+	and documentation for new argument.
+	* src/InadequacyList.c (InadequacyList__new_conflict): Add
+	node_count argument and use it to assign a unique ID.
+	* src/InadequacyList.h (InadequacyListNodeCount): New typedef.
+	(InadequacyList): Add id field.
+	(InadequacyList__new_conflict): Update prototype and
+	documentation for new argument.
+	* src/ielr.c (ielr_compute_annotation_lists): Update
+	AnnotationList__compute_from_inadequacies invocation.
+
+2009-12-20  Joel E. Denny  <jdenny@clemson.edu>
+
+	Fix handling of yychar manipulation in user semantic actions.
+	The problem was that yacc.c didn't always update the yychar
+	translation afterwards.  However, other skeletons appear to be
+	fine.  glr.c appears to already translate yychar before every
+	use.  lalr1.cc does not define yychar and does not document its
+	replacement, yyla, for users.  It does provide yyclearin, but
+	that does not manipulate yyla and thus requires no translation
+	update.  In lalr1.java, yychar is out of scope during semantic
+	actions.
+	* NEWS (2.5): Document.
+	* data/yacc.c (YYBACKUP): Don't bother translating yychar into
+	yytoken here.
+	(yyparse, yypush_parse): Instead, translate before every use of
+	yytoken, and add comments explaining this approach.
+	* tests/actions.at (Destroying lookahead assigned by semantic
+	action): New test group checking that translation happens before
+	lookahead destructor calls at parser return.  Previously,
+	incorrect destructors were called.
+	* tests/conflicts.at (parse.error=verbose and consistent
+	errors): New test group checking that translation happens at
+	syntax error detection before the associated verbose error
+	message and the associated lookahead destructor calls.  While
+	the destructor call is fixed by this patch, the verbose error
+	message is currently incorrect due to another bug (see
+	comments in test group), so this is an expected failure for now.
+
+2009-12-21  Joel E. Denny  <jdenny@clemson.edu>
+
+	YYFAIL: warn about uses and remove from lalr1.java.
+	* NEWS (2.5): Document.
+	* data/lalr1.java (parser::YYStack::YYFAIL): Rename to YYERRLAB,
+	and make it private.  Update all uses.
+	* src/scan-code.l (SC_RULE_ACTION): Implement warning.
+
+2009-12-21  Joel E. Denny  <jdenny@clemson.edu>
+
+	YYFAIL: deprecate.
+	* NEWS (2.4.2): Document deprecation and the phase-out plan.
+	* data/lalr1.java (parser::YYStack::YYFAIL): Add comment about
+	deprecation.
+	* data/yacc.c (YYFAIL): Likewise, and suppress warnings about
+	YYFAIL from GCC cpp's -Wunused-macros.
+	* doc/bison.texinfo (Java Action Features): Remove YYFAIL
+	documentation.
+	(LocalWords): Remove YYFAIL.
+
+2009-12-20  Joel E. Denny  <jdenny@clemson.edu>
+
+	tests: cleanup.
+	* tests/c++.at (Syntax error discarding no lookahead): Don't
+	ignore stderr.  Instead, eliminate remaining warnings.
+
+2009-12-18  Joel E. Denny  <jdenny@clemson.edu>
+
+	lalr1.cc: don't discard non-existent lookahead on syntax error.
+	* data/lalr1.cc (parser::parse): Check yyempty first.
+	* tests/c++.at (Syntax error discarding no lookahead): New test
+	group.
+
+2009-12-17  Joel E. Denny  <jdenny@clemson.edu>
+
+	Code cleanup.
+	* src/symtab.c, src/symtab.h (symbol_class_get_string): Remove
+	function, which is no longer used.
+
+2009-12-16  Joel E. Denny  <jdenny@clemson.edu>
+
+	Add gcc's -Wundef to test suite and fix another warning from it.
+	* NEWS (2.4.2): Update description of -Wundef fix.
+	* configure.ac (WARN_CXXFLAGS_TEST): New substitution.
+	(WARN_CFLAGS_TEST): New substitution.
+	* data/glr.c: Avoid warning about __STRICT_ANSI__.
+	* tests/atlocal.in (CFLAGS): Use WARN_CFLAGS_TEST instead of
+	WARN_CFLAGS.
+	(NO_WERROR_CFLAGS): Likewise.
+	(CXXFLAGS): Use WARN_CXXFLAGS_TEST instead of WARN_CXXFLAGS.
+
+2009-12-16  Joel E. Denny  <jdenny@clemson.edu>
+
+	* data/yacc.c: Reformat m4 a little.
+
+2009-12-16  Joel E. Denny  <jdenny@clemson.edu>
+
+	Document gcc -Wundef fix.
+	* NEWS (2.4.2): Here.
+	* THANKS (Jonathan Nieder): Add.
+
+2009-12-15  Jonathan Nieder  <jrnieder@gmail.com>  (tiny change)
+
+	Simplify y.tab.c when location tracking is disabled.
+	* data/yacc.c: Do not check YYLTYPE_IS_TRIVIAL if location
+	tracking is not enabled.  Instead, unconditionally define
+	YY_LOCATION_PRINT as a no-op for backward compatibility.
+
+2009-12-15  Jonathan Nieder  <jrnieder@gmail.com>  (tiny change)
+
+	Avoid warnings from gcc -Wundef y.tab.c.
+	* data/glr.c: Check if YYENABLE_NLS and YYLTYPE_IS_TRIVIAL are
+	defined before using them.
+	* data/lalr1.cc: Likewise.
+	* data/yacc.c: Likewise.
+
+2009-12-15  Joel E. Denny  <jdenny@clemson.edu>
+
+	autoconf: update to latest for fix of M4 detection.
+	Reported by Eric Blake.
+	* submodules/autoconf: Update.
+
+2009-12-15  Joel E. Denny  <jdenny@clemson.edu>
+
+	portability: use -DGNULIB_POSIXCHECK.
+	Reported by Eric Blake.  See discussions at
+	<http://lists.gnu.org/archive/html/bug-bison/2009-09/msg00008.html>
+	and
+	<http://lists.gnu.org/archive/html/bug-gnulib/2009-10/msg00108.html>.
+	* HACKING (Release checks): Suggest -DGNULIB_POSIXCHECK.
+	* bootstrap.conf (gnulib_modules): Add all the printf modules
+	suggested by -DGNULIB_POSIXCHECK.  Add realloc-posix as
+	suggested by -DGNULIB_POSIXCHECK for gnulib's own vasnprintf.c.
+	(excluded_files): Remove m4/printf-posix.m4.
+	* tests/atlocal.in (LIBS): As for LDADD in src/local.mk, add
+	lib/libbison.a so gnulib libraries can be linked.
+
+2009-12-15  Joel E. Denny  <jdenny@clemson.edu>
+
+	gnulib: update for fix of fprintf-posix, which we'll use soon.
+	* etc/prefix-gnulib-mk (prefix): Adjust regex for make file
+	targets so that gnulib's new arg-nonnull.h and link-warning.h
+	are matched.
+	* gnulib: Update.
+
+2009-12-14  Joel E. Denny  <jdenny@clemson.edu>
+
+	Enable assertion output and --disable-assert for configure.
+	* bootstrap.conf (gnulib_modules): Add assert module.
+	* src/system.h (aver): Define as assert, and summarize the
+	discussion on this issue.
+
+2009-12-14  Joel E. Denny  <jdenny@clemson.edu>
+
+	Expand GLR acronym in summary of Bison.
+	Based on discussion with Akim Demaille starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2009-04/msg00087.html>.
+	* doc/bison.texinfo (Introduction): Here.
+	* src/getargs.c (usage): Here.
+
+2009-10-03  Alex Rozenman  <rozenman@gmail.com>
+
+	Document named references.
+	* doc/bison.texinfo (Actions): Add new example and xref to
+	Using Named References node.
+	(Using Named References): New node.
+
+2009-10-16  Joel E. Denny  <jdenny@clemson.edu>
+
+	cleanup.
+	* src/Sbitset.c (Sbitset__new_on_obstack): Use Sbitset instead
+	of char*.
+	(Sbitset__isEmpty): Use Sbitset instead of char*.
+	* src/Sbitset.h (Sbitset): Make it a pointer to unsigned char
+	instead of char.  This helps to avoid casting errors.
+	(Sbitset__or): Use Sbitset instead of char*.
+
+2009-10-16  Joel E. Denny  <jdenny@clemson.edu>
+
+	portability: don't assume 8-bit bytes.
+	That is, use CHAR_BIT and UCHAR_MAX instead of 8 and 0xff.
+	* src/Sbitset.h (Sbitset__nbytes): Here.
+	(Sbitset__byteAddress): Here.
+	(Sbitset__bit_mask): Here.
+	(Sbitset__last_byte_mask): Here.
+	(Sbitset__ones): Here.
+	(SBITSET__FOR_EACH): Here.
+
+2009-10-11  Joel E. Denny  <jdenny@clemson.edu>
+
+	portability: use va_start and va_end in the same function.
+	* src/complain.c (error_message): Move va_end from here...
+	(ERROR_MESSAGE): ... to here.
+
+2009-10-08  Joel E. Denny  <jdenny@clemson.edu>
+
+	* data/bison.m4: Update comments for rename to muscle-tab.h.
+
+2009-10-07  Joel E. Denny  <jdenny@clemson.edu>
+
+	Minor code cleanup.
+	* src/muscle-tab.c (MUSCLE_USER_NAME_CONVERT): Remove macro and
+	replace all uses with UNIQSTR_CONCAT.
+	* src/uniqstr.c (uniqstr_vsprintf): New function.
+	* src/uniqstr.h (uniqstr_vsprintf): Add prototype.
+	(UNIQSTR_CONCAT, UNIQSTR_GEN_FORMAT, UNIQSTR_GEN_FORMAT_): New
+	macros.
+
+2009-10-06  Joel E. Denny  <jdenny@clemson.edu>
+
+	* TODO (Complaint submessage indentation): New.
+
+2009-10-04  Joel E. Denny  <jdenny@clemson.edu>
+
+	Minor code cleanup.
+	* src/parse-gram.y: Clean up sorting of declarations.
+	Use types to simplify %printer declarations where possible.
+	Provide %printer for BRACKETED_ID and symbol.prec.
+	* src/symtab.c: Whitespace change.
+
+2009-10-04  Joel E. Denny  <jdenny@clemson.edu>
+
+	tests: skip tests of file names that platform does not support.
+	Reported by Michael Raskin at
+	<http://lists.gnu.org/archive/html/bug-bison/2009-09/msg00001.html>.
+	* THANKS (Michael Raskin): Add.
+	* tests/output.at (AT_CHECK_OUTPUT_FILE_NAME): Fix.  Cygwin used
+	to fail at least for file names containing ":" or "\".
+
+2009-09-23  Joel E. Denny  <jdenny@clemson.edu>
+
+	yysyntax_error: avoid duplicate lookahead collection.
+	Except when memory reallocation is required, this change
+	eliminates the need to invoke yysyntax_error twice and thus to
+	repeat the collection of lookaheads.  It also prepares for
+	future extensions that will make those repetitions more
+	expensive and that will require additional memory management in
+	yysyntax_error.  Finally, it fixes an obscure bug already
+	exercised in the test suite.
+	* data/yacc.c (yysyntax_error): Add arguments for message
+	buffer variables stored in the parser.  Instead of size, return
+	status similar to yyparse status but indicating success of
+	message creation.  Other than the actual reallocation of the
+	message buffer, import and clean up memory management code
+	from...
+	(yyparse, yypush_parse): ... here.
+	* tests/regression.at (parse.error=verbose overflow): No longer
+	an expected failure.
+
+2009-09-23  Joel E. Denny  <jdenny@clemson.edu>
+
+	yysyntax_error: test memory management more.
+	* tests/atlocal.in (NO_WERROR_CFLAGS): New cpp macro.
+	* tests/regression.at (parse.error=verbose and
+	YYSTACK_USE_ALLOCA): New test group.
+	(parse.error=verbose overflow): New test group that reveals an
+	obscure bug.  Expected fail for now.
+
+2009-10-04  Joel E. Denny  <jdenny@clemson.edu>
+
+	benchmarks: use %debug consistently among grammars.
+	* etc/bench.pl.in (generate_grammar_triangular): Do not activate
+	%debug by default.  It can affect the timings even if yydebug=0.
+	(generate_grammar_calc): For consistency with other grammars,
+	use YYDEBUG environment variable to set yydebug.
+
+2009-10-03  Joel E. Denny  <jdenny@clemson.edu>
+
+	Remove dead code.
+	* src/symtab.c (symbol_pack): Here because every symbol's number
+	is always defined by this time.
+
+2009-10-03  Alex Rozenman  <rozenman@gmail.com>
+
+	Add additional space after periods in NEWS.
+	* NEWS (2.5): here.
+
+2009-09-29  Joel E. Denny  <jdenny@clemson.edu>
+
+	Use the correct conversion specifier for size_t.
+	Reported by Jim Meyering.
+	* src/Sbitset.h (SBITSET__INDEX__CONVERSION_SPEC): New, "zu"
+	because Sbitset__Index is size_t.
+	* src/Sbitset.c (Sbitset__fprint): Use it instead of %d.
+
+2009-09-27  Joel E. Denny  <jdenny@clemson.edu>
+
+	tests: don't abuse AT_BISON_CHECK.
+	* tests/regression.at (parse-gram.y: LALR = IELR): Move
+	additional shell commands outside of AT_BISON_CHECK.
+
+2009-09-26  Joel E. Denny  <jdenny@clemson.edu>
+
+	tests: check that parse-gram.y's IELR and LALR are identical.
+	* tests/atlocal.in (abs_top_srcdir): New shell variable.
+	* tests/regression.at (parse-gram.y: LALR = IELR): New test
+	group.
+
+2009-09-19  Alex Rozenman  <rozenman@gmail.com>
+
+	Keep sub-messages aligned. Fix strings for translation.
+	* src/location.h (location_print): Add return value.
+	* src/location.c (location_print): Return number of printed
+	characters.
+	* src/complain.h (complain_at_indent, warn_at_indent): Prototype
+	new functions.
+	* src/complain.cpp (indent_ptr): New static variable.
+	(error_message, complain_at_indent, warn_at_indent): Implement
+	the alignment mechanism.
+	* src/scan-code.l (parse_ref, show_sub_messages): Fix strings
+	for translations. Use new alignment mechanism.
+	* tests/named-ref.at: Adjust test-cases.
+	* NEWS (2.5): Add an announcement about named references.
+
+2009-09-17  Akim Demaille  <demaille@gostai.com>
+
+	doc: fixes.
+	* doc/bison.texinfo: here.
+	Reported by Alex Rozenman.
+
+2009-09-16  Akim Demaille  <demaille@gostai.com>
+
+	doc: lalr1.cc and variants.
+	* doc/bison.texinfo (Decl Summary): Document the "lex_symbol" and
+	"variant" %define variables.
+	(C++ Semantic Values): Split into...
+	(C++ Unions, C++ Variants): these.
+	The latter is new.
+	(C++ Parser Interface): Fix type names.
+	Document parser::syntax_error.
+	Document the fact that locations are not mandatory.
+	(C++ Scanner Interface): Split into...
+	(Split Symbols, Complete Symbols): these.
+	The later is new.
+	(Calc++ Parsing Driver): Use variants.
+	Add more comments.
+	Adjust style.
+	(Calc++ Parser): Declare all the tokens, no
+	longer accept raw characters.
+	Remove %union.
+	Adjust types and printers.
+	Remove destructors.
+	(Calc++ Scanner): Use make_<SYMBOL> functions.
+	Use strerror in error message.
+
+2009-09-16  Akim Demaille  <demaille@gostai.com>
+
+	doc: spell checking.
+	* doc/bison.texinfo: here.
+
+2009-09-16  Akim Demaille  <demaille@gostai.com>
+
+	doc: comment changes.
+	* doc/bison.texinfo: Comment changes.
+
+2009-09-16  Akim Demaille  <demaille@gostai.com>
+
+	lalr1.cc: factor the yytranslate_ invocation in make_SYMBOLS.
+	* data/c++.m4, data/lalr1.cc (parser::symbol_type): Change the
+	constructor to take a token_type instead of the (internal) symbol
+	number.
+	Call yytranslate_.
+	* data/variant.hh (b4_symbol_constructor_define_): Therefore,
+	don't call yytranslate_ here.
+
+2009-09-16  Akim Demaille  <demaille@gostai.com>
+
+	TODO: statistics.
+	* TODO (Figures): New.
+
+2009-09-13  Joel E. Denny  <jdenny@clemson.edu>
+
+	tests: clean up push.at test group titles.
+	* tests/push.at: Remove "Push Parsing: " from test group titles
+	because these are already under the banner "Push Parsing Tests".
+
+2009-09-12  Alex Rozenman  <rozenman@gmail.com>
+
+	Provide an additional sub-message for clarity.
+	Add "symbol not found in production" error message when
+	an "invalid reference" is detected in named references
+	resolution.
+	* src/scan-code.l: Update "invalid reference" case.
+	* tests/named-ref.at: Adjust test-cases.
+
+2009-09-10  Joel E. Denny  <jdenny@clemson.edu>
+
+	Clean up yacc.c a little.
+	* data/yacc.c: Clean up M4 for readability, and make output
+	whitespace more consistent.  For the main parse function
+	comment, instead of saying "yyparse or yypush_parse", say either
+	"yyparse" or "yypush_parse" depending on which it actually is.
+
+2009-09-10  Joel E. Denny  <jdenny@clemson.edu>
+
+	Fix --enable-gcc-warnings.
+	* src/parse-gram.y (%printer <param>): Handle param_none.
+
+2009-09-09  Akim Demaille  <demaille@gostai.com>
+
+	lalr1.cc: syntax_error as exceptions.
+	It is common to use sort of factories in the user actions.  These
+	factories may check some "syntactic" constraints that are not
+	enforced by the grammar itself.  This is possible using YYERROR
+	within the action itself.  Provide the user with a means to throw
+	a syntax_error exception.
+
+	* data/c++.m4 (b4_public_types_declare, b4_public_types_define):
+	Declare and define yy::parser::syntax_error.
+	* data/lalr1.cc: Include stdexcept.
+	(yy::parser::parse): Wrap the user action within a try/catch.
+	* data/glr.cc: Include stdexcept.
+
+2009-09-09  Akim Demaille  <demaille@gostai.com>
+
+	lalr1.cc: add missing "inline".
+	* data/c++.m4 (b4_public_types_define): Add missing inline to
+	implementations provided in headers.
+
+2009-09-09  Akim Demaille  <demaille@gostai.com>
+
+	%param: documentation.
+	* NEWS (2.6): Document %param, %lex-param, and %parse-param
+	changes.
+	* doc/bison.texinfo: Document that %lex-param and %parse-param
+	are n-ary.
+	Changes some examples to demonstrate it.
+	(Calc++ Parser): Use %param.
+
+2009-09-09  Akim Demaille  <demaille@gostai.com>
+
+	Regen.
+
+2009-09-09  Akim Demaille  <demaille@gostai.com>
+
+	style changes.
+	* src/parse-gram.y (add_param): Scope changes.
+
+2009-09-09  Akim Demaille  <demaille@gostai.com>
+
+	%parse: support several arguments.
+	* src/parse-gram.y (current_param): New.
+	(param_type): Add param_none.
+	(params): New nonterminal.
+	Use it.
+
+2009-09-09  Akim Demaille  <demaille@gostai.com>
+
+	Regen.
+
+2009-09-09  Akim Demaille  <demaille@gostai.com>
+
+	%param.
+	Provide a means to factor lex-param and parse-param common
+	declarations.
+
+	* src/parse-gram.y (param_type): New.
+	Define a %printer for it.
+	(add_param): Use it.
+	(%parse-param, %lex-param): Merge into...
+	(%parse): this new token.
+	Adjust the grammar to use it.
+	* src/scan-gram.l (RETURN_VALUE): New.
+	(RETURN_PERCENT_FLAG): Use it.
+	(RETURN_PERCENT_PARAM): New.
+	Use it to support %parse-param, %lex-param and %param.
+
+2009-09-03  Joel E. Denny  <jdenny@clemson.edu>
+
+	Use aver not assert.
+	* src/output.c: Don't include assert.h.
+	(output_skeleton): Use aver not assert.
+	* src/system.h (aver): In documentation of why, add links to
+	Paul Eggert's explanations in the mailing lists.
+
+2009-09-05  Alex Rozenman  <rozenman@gmail.com>
+
+	Use "Unresolved reference" error message when no symbols were found
+	in a symbolic reference resolution. Remove .expr and -expr from
+	the shown reference when the reference is unresolved.
+	* src/scan-code.l: Change the error message, adjust location columns,
+	rename variable "exact_mode" to "explicit_bracketing".
+	* tests/named-ref.at: Adjust existing tests and add a new one.
+
+2009-09-04  Akim Demaille  <demaille@gostai.com>
+
+	Adjust synclines in src/parse-gram.[ch].
+	* tests/bison.in: Do some magic (including working around issues
+	with ylwrap) when this wrapper is used to compile
+	src/parse-gram.y.
+
+2009-09-03  Joel E. Denny  <jdenny@clemson.edu>
+
+	Complain about unused %define variables and %code qualifiers.
+	* NEWS (2.5): Document.
+	* data/bison.m4 (b4_check_user_names): Complain instead of warn.
+	* doc/bison.texinfo (Decl Summary): Document complaint, and
+	improve %define documentation a little otherwise.
+	* tests/input.at (Reject unused %code qualifiers): Update.
+	(%define errors): Update.
+	(%define, --define, --force-define): Update.
+	(%define backward compatibility): Update.
+	(Unused %define api.pure): Update.
+	* tests/push.at (Push Parsing: Unsupported Skeletons): Update.
+
+2009-09-03  Joel E. Denny  <jdenny@clemson.edu>
+
+	Don't suppress warnings about unused parse.error.
+	* data/bison.m4 (b4_error_verbose_flag): Don't examine value of
+	%define variable parse.error unless b4_error_verbose_flag is
+	actually expanded in a skeleton.
+
+2009-09-03  Akim Demaille  <demaille@gostai.com>
+
+	* NEWS (2.4.2): Add "Internationalization" item.
+
+2009-09-03  Akim Demaille  <demaille@gostai.com>
+
+	bootstrap: fix/improve find_tool.
+	* bootstrap (find_tool): Improve error messages.
+	Fix typo about find_tool_names.
+
+2009-08-29  Joel E. Denny  <jdenny@clemson.edu>
+
+	Fix gcc 3.4.4 shadowing warning reported by Eric Blake.
+	See
+	<http://lists.gnu.org/archive/html/bison-patches/2009-08/msg00093.html>.
+	* src/scan-code.h (code_props_rule_action_init): Rename
+	named_ref arg to name so it doesn't shadow named_ref type.  This
+	makes it consistent with the function definition in scan-code.l
+	anyway.
+
+2009-08-28  Joel E. Denny  <jdenny@clemson.edu>
+
+	%define: accept unquoted values.
+	* NEWS (2.5): Group all %define changes together, and document
+	this one.  Remove quotes in IELR and canonical LR entry.
+	* doc/bison.texinfo: Remove quotes in most examples throughout.
+	(Decl Summary): Update %define documentation.
+	(Table of Symbols): Likewise.
+	* src/ielr.c (LrType): Update documentation.
+	* src/parse-gram.y (content.opt): Add production for ID.
+	* tests/actions.at: Remove quotes in most tests.
+	* tests/calc.at: Likewise.
+	* tests/existing.at: Likewise.
+	* tests/input.at: Likewise.
+	* tests/local.at: Likewise.
+	* tests/push.at: Likewise.
+	* tests/reduce.at: Likewise.
+	* tests/torture.at: Likewise.
+
+2009-08-28  Joel E. Denny  <jdenny@clemson.edu>
+
+	%define lr.type: make values lowercase IDs.
+	That is, "LALR" => "lalr", "IELR" => "ielr", and
+	"canonical LR" => "canonical-lr".
+	* NEWS (2.5): Update documentation.
+	* doc/bison.texinfo (Decl Summary): Likewise.
+	* src/ielr.c (ielr): Use new values.
+	* src/ielr.h (ielr): Update documentation.
+	* src/reader.c (prepare_percent_define_front_end_variables): Use
+	and validate new values.
+	* tests/existing.at (AT_TEST_EXISTING_GRAMMAR): Update test
+	grammars.
+	* tests/reduce.at (AT_TEST_LR_TYPE): Likewise.
+
+2009-08-27  Eric Blake  <ebb9@byu.net>
+
+	scan-gram: avoid portability trap with ctype usage.
+	* src/scan-gram.l (<SC_ESCAPED_STRING,SC_ESCAPED_CHARACTER>):
+	Avoid compiler warning.
+
+2009-08-27  Joel E. Denny  <jdenny@clemson.edu>
+
+	tests: use perl for printing special sequences to files.
+	And skip tests if perl is not available.  This is better than
+	playing tricks with shell portability.  Suggested by Akim
+	Demaille.
+	* tests/input.at (Bad character literals): Use it here for
+	omitting final newlines.
+	(Bad escapes in literals): Use it here for special characters.
+
+2009-08-26  Joel E. Denny  <jdenny@clemson.edu>
+
+	tests: show a use of %define lr.default-reductions "consistent"
+	* tests/conflicts.at (%nonassoc and eof): Extend to test that it
+	prevents the omission of expected tokens for %error-verbose.
+
+2009-08-26  Akim Demaille  <demaille@gostai.com>
+
+	tests: portability fix.
+	* tests/input.at (Bad escapes in literals): Don't expect "echo
+	'\0'" to output \ then 0.
+
+2009-08-26  Joel E. Denny  <jdenny@clemson.edu>
+
+	Actually handle the yytable zero value correctly this time.
+	* data/bison.m4 (b4_integral_parser_tables_map): Don't mention
+	zero values in the YYTABLE comments.
+	* data/glr.c (yytable_value_is_error): Don't check for zero
+	value.
+	* data/lalr1.cc (yy_table_value_is_error_): Likewise.
+	* data/yacc.c (yytable_value_is_error): Likewise.
+	* data/lalr1.java (yy_table_value_is_error_): Likewise.
+	(yysyntax_error): Fix typo in code: use yytable_ not yycheck_.
+	* src/tables.h: In header comments, explain why it's useless to
+	check for a zero value in yytable.
+
+2009-08-25  Joel E. Denny  <jdenny@clemson.edu>
+
+	More fixes related to last two patches.
+	* data/bison.m4 (b4_integral_parser_tables_map): Fix YYTABLE
+	comments: zero indicates syntax error not default action.
+	* data/c.m4 (b4_table_value_equals): Comment that YYID must be
+	defined.
+	* data/glr.c (yyis_pact_ninf): Rename to...
+	(yypact_value_is_default): ... this.
+	(yyisDefaultedState): Update for rename.
+	(yyis_table_ninf): Rename to...
+	(yytable_value_is_error): ... this, and check for value zero
+	besides just YYTABLE_NINF.
+	(yygetLRActions): Check for default value from yypact.  It
+	appears that this check is always performed before this function
+	is invoked, and so adding the check here is probably redundant.
+	However, the code may evolve after this subtlety is forgotten.
+	Also, update for rename to yytable_value_is_error.  Because that
+	macro now checks for zero, a different but equivalent branch of
+	the if-then-else here is evaluated.
+	(yyreportSyntaxError): Update for rename to
+	yytable_value_is_error.  The zero condition was mishandled
+	before.
+	(yyrecoverSyntaxError): Update for renames.  No behavioral
+	changes.
+	* data/lalr1.cc, data/lalr1.java (yy_pact_value_is_default_):
+	New function.
+	(yy_table_value_is_error_): New function.
+	(parse): Use new functions where possible.  No behavioral
+	changes.
+	(yysyntax_error_, yysyntax_error): Use yy_table_value_is_error_.
+	The zero condition was mishandled before.
+	* data/yacc.c (yyis_pact_ninf): Rename to...
+	(yypact_value_is_default): ... this.
+	(yyis_table_ninf): Rename to...
+	(yytable_value_is_error): ... this, and check for value zero
+	besides just YYTABLE_NINF.
+	(yysyntax_error): Update for rename to yytable_value_is_error.
+	The zero condition was mishandled before.
+	(yyparse): Update for renames.  No behavioral changes.
+	* src/tables.h: Improve comments about yypact, yytable, etc.
+	more.  Most importantly, say yytable value of zero means syntax
+	error not default action.
+
+2009-08-25  Joel E. Denny  <jdenny@clemson.edu>
+
+	Fix %error-verbose for conflicts resolved by %nonassoc.
+	* NEWS (2.5): Document.
+	* data/glr.c (yyreportSyntaxError): Fix this by checking
+	yyis_table_ninf.
+	* data/yacc.c (yysyntax_error): Likewise.
+	* data/lalr1.cc (yysyntax_error_): Fix this by checking
+	yytable_ninf_.
+	* data/lalr1.java (yysyntax_error): Likewise.
+	* tests/conflicts.at (%nonassoc and eof): Update expected output
+	and remove FIXME.
+
+2009-08-25  Joel E. Denny  <jdenny@clemson.edu>
+
+	Some code and documentation improvements.
+	* data/c.m4 (b4_table_value_equals): New macro to capture
+	some repeated code.
+	* data/glr.c (yyis_pact_ninf): Use it here.
+	(yyis_table_ninf): Likewise.
+	(yyreportSyntaxError): Improve internal comments.
+	* data/yacc.c (yyis_pact_ninf): New macro copied from glr.c.
+	Use it everywhere possible.
+	(yyis_table_ninf): Likewise.
+	(yysyntax_error): Improve internal comments.
+	* data/lalr1.cc (yysyntax_error_): Likewise.
+	* data/lalr1.java (yysyntax_error): Likewise.
+	* src/tables.h: Improve comments about yypact, yytable, etc.
+
+2009-08-21  Joel E. Denny  <jdenny@clemson.edu>
+
+	Use locale when quoting.
+	* src/scan-gram.l (SC_ESCAPED_STRING, SC_ESCAPED_CHARACTER): Use
+	quote rather than implementing quoting here.
+
+2009-08-20  Eric Blake  <ebb9@byu.net>
+
+	Make previous patch more robust.
+	* src/output.c (ARRAY_CARDINALITY): New macro, copied from
+	argmatch.h.
+	(output_skeleton): Use it.
+	Suggested by Akim Demaille.
+
+	Import latest m4/m4.m4.
+	* submodules/autoconf: Update to autoconf 2.64.
+	* configure.ac (M4_GNU_OPTION): New define.
+	* src/output.c (output_skeleton): Use it to resolve FIXME.
+	* NEWS: Mention this.
+
+2009-08-19  Joel E. Denny  <jdenny@clemson.edu>
+
+	Fix complaints about escape sequences.
+	Discussed starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2009-08/msg00036.html>.
+	* src/scan-gram.l (SC_ESCAPED_STRING, SC_ESCAPED_CHARACTER):
+	For a \0 and similar escape sequences meaning the null
+	character, report an invalid escape sequence instead of an
+	invalid null character because the latter does not actually
+	appear in the user's input.
+	In all escape sequence complaints, don't escape the initial
+	backslash, and don't quote when the sequence appears at the end
+	of the complaint line unless there's whitespace that quotearg
+	won't escape.
+	Consistently say "invalid" not "unrecognized".
+	Consistently prefer "empty character literal" over "extra
+	characters in character literal" warning for invalid escape
+	sequences; that is, consistently discard those sequences.
+	* tests/input.at (Bad escapes in literals): New.
+
+2009-08-19  Akim Demaille  <demaille@gostai.com>
+
+	doc: fixes.
+	* doc/bison.texinfo: Fix minor Texinfo errors.
+
+2009-08-19  Akim Demaille  <demaille@gostai.com>
+
+	tests: distcc compliance.
+	* tests/synclines.at (AT_SYNCLINES_COMPILE): Discard distcc's
+	error messages from the output.
+
+2009-08-19  Akim Demaille  <demaille@gostai.com>
+
+	variables: simplify the upgrade of namespace into api.namespace.
+
+	This patch simplifies "variables: rename namespace as
+	api.namespace", commit 67501061076ba46355cfd9f9361c7eed861b389c.
+	Suggested by Joel E. Denny in
+	http://lists.gnu.org/archive/html/bison-patches/2009-07/msg00006.html
+
+	* src/muscle-tab.c (muscle_percent_variable_update): New.
+	(muscle_percent_define_insert): Use it in replacement of the
+	previous tr invocation.
+	Remove variable_tr, no longer needed.
+	* data/bison.m4 (b4_percent_define_copy_, b4_percent_define_copy):
+	Remove.
+	* data/c++.m4: No longer handle namespace -> api.namespace.
+	* tests/input.at (%define backward compatibility): Check that
+	namespace is treated as api.namespace.
+
+2009-08-19  Akim Demaille  <demaille@gostai.com>
+
+	doc: %initial-action to initialize yylloc.
+	Reported by Bill Allombert.
+	* doc/bison.texinfo: Set fill-column to 76.
+	(Location Type): Document the use of %initial-action to initialize
+	yylloc.
+
+2009-08-19  Akim Demaille  <demaille@gostai.com>
+
+	lalr1.cc: use state_type.
+	* data/lalr1.cc (yysyntax_error_): Use state_type.
+	Move argument names into yy*.
+
+2009-08-19  Akim Demaille  <demaille@gostai.com>
+
+	lalr1.cc: get rid of yyparse's yystate.
+	yystate and yystack_[0].state are equal, keep only the latter.
+	The former was also used as a temporary variable to compute the
+	post-reduction state.  Move this computation into an auxiliary
+	function.
+
+	* data/glr.c (yyLRgotoState): Fuse variable definition and first
+	assignment.
+	* data/lalr1.cc (yy_lr_goto_state_): New.
+	(yyparse): Use it.
+	Replace remaining uses of yystate by yystate_[0].state.
+	Remove the former.
+
+2009-08-19  Akim Demaille  <demaille@gostai.com>
+
+	lalr1.cc: destroy $$ when YYERROR is called.
+	* data/lalr1.cc (yyreduce): Compute the resulting state before
+	running the user action so that yylhs is a valid symbol.
+	(yyerrorlab): Since yylhs is complete (it knows its type), we can
+	simply call yy_destroy_ to destroy $$ on YYERROR invocations.
+	* tests/c++.at (AT_CHECK_VARIANTS): Test YYERROR with variants.
+
+2009-08-18  Joel E. Denny  <jdenny@clemson.edu>
+
+	maint: update for gnulib's recent update-copyright changes
+	* gnulib: Update.
+	* .x-update-copyright (COPYING): Add as it's no longer implied
+	when .x-update-copyright is present.
+	* cfg.mk (update-copyright-local): Remove, now ignored.
+	(update-copyright): Declare update-b4-copyright as a dependency.
+
+2009-08-17  Akim Demaille  <demaille@gostai.com>
+
+	build: require gettext 0.17.
+
+	Suggested by Bruno Haible.
+	http://lists.gnu.org/archive/html/bug-bison/2009-08/msg00009.html
+	* configure.ac: require gettext 0.17 to ensure compatibility with
+	gnulib.
+
+2009-08-17  Akim Demaille  <demaille@gostai.com>
+
+	build: lower gettext requirements.
+
+	Bison was uselessly requiring the formatstring macros from
+	gettext, which resulted in mo files not being installed on systems
+	that perfectly supported Bison mo files.  Lower the requirement.
+	http://lists.gnu.org/archive/html/bug-bison/2009-08/msg00006.html
+
+	* configure.ac: Require need-ngettext instead of
+	need-formatstring-macros.
+	Reported by Martin Jabocs.
+	Suggested by Bruno Haible.
+	* INSTALL: Restructure.
+	(Internationalization): New.
+
+2009-08-14  Joel E. Denny  <jdenny@clemson.edu>
+
+	maint: fix use of copyright year intervals.
+	* gnulib: Update.
+	* bootstrap.conf (gnulib_modules): Update getopt to getopt-gnu
+	as now recommended in gnulib/NEWS.
+	* build-aux/update-b4-copyright: Fix.
+	* cfg.mk (update-copyright-env): Configure update-copyright.
+
+2009-08-13  Joel E. Denny  <jdenny@clemson.edu>
+
+	Make it easier to write deterministic tests.
+	Continues Akim's work from his 2009-06-10 commits.
+	* src/reader.c (check_and_convert_grammar): Don't add any
+	symbols after the first symbols_do invocation.
+	* src/symtab.c (symbols_sorted): New static global.
+	(user_token_number_redeclaration): Update comments.
+	(symbol_from_uniqstr): If a new symbol is being created, assert
+	that symbols_sorted hasn't been allocated yet.
+	(symbols_free): Free symbols_sorted.
+	(symbols_cmp, symbols_cmp_qsort): New functions.
+	(symbols_do): Sort symbol_table into symbols_sorted on first
+	invocation.
+	* tests/input.at (Numbered tokens): Recombine tests now that the
+	output should be deterministic across multiple numbers.
+
+2009-08-12  Akim Demaille  <demaille@gostai.com>
+
+	tests: GCC 4.5 compliance.
+	* tests/synclines.at (AT_SYNCLINES_COMPILE): Adjust to GCC 4.5's
+	messages about #error.
+
+2009-08-12  Akim Demaille  <demaille@gostai.com>
+
+	build: fix the generation of the documentation.
+	Some of our targets use "bison --help", but they can't depend on
+	"bison" itself (to avoid additional requirements on the user), so
+	they used to call "make src/bison" in the commands.  Then
+	concurrent builds may fail: one make might be aiming one of its
+	jobs at compiling src/bison, and another job at generating the man
+	page.  If the latter is faster than the former, then we have two
+	makes that concurrently try to compile src/bison.
+
+	This might also be a more convincing explanation for the failure
+	described in the patch "build: fix paths".
+
+	* Makefile.am (SUFFIXES): Initialize.
+	* build-aux/move-if-change: New, symlink to gnulib's.
+	* build-aux/local.mk: Ship it.
+	* doc/common.x: Remove, merged into...
+	* doc/bison.x: here.
+	* doc/local.mk (doc/bison.help): New.
+	($(CROSS_OPTIONS_TEXI)): Depend on it.
+	Use src/bison.
+	(.x.1): Replace with...
+	(doc/bison.1): this explicit, simpler, target.
+	(common_dep): Remove, inlined where appropriate.
+	(SUFFIXES, PREPATH): Remove, unused.
+
+2009-08-12  Akim Demaille  <demaille@gostai.com>
+
+	gnulib: improve prefixing.
+	* configure.ac (gl_PREFIXED_LIBOBJS): Don't rename it, rather,
+	change the value of...
+	(gl_LIBOBJS): this.
+	Adjust more variables.
+	* etc/prefix-gnulib-mk (prefix_assignment): Don't rename
+	gl_LIBOBJS.
+	(prefix): Also transform rules whose targets have slashes.
+	Use $prefix liberally.
+	Map @MKDIR_P@ to $(MKDIR_P).
+	Prefix directories that are mkdir'd.
+
+2009-08-12  Akim Demaille  <demaille@gostai.com>
+
+	build: fix paths.
+	When using $(top_builddir) inconsistently, Make (including GNU
+	Make) is sometimes confused.  As a result it may want to build
+	lib/libbison.la and $(top_builddir)/lib/libbison.la (the same
+	file, different names) concurrently, which, amusingly enough,
+	might end with:
+
+	  ranlib lib/libbison.a
+	  ranlib lib/libbison.a
+	  make[2]: *** [lib/libbison.a] Segmentation fault
+
+	on OS X.
+
+	* doc/local.mk, src/local.mk: Do not use $(top_builddir) when not
+	needed.
+
+2009-08-12  Akim Demaille  <demaille@gostai.com>
+
+	distcheck: fix.
+
+	* examples/calc++/Makefile.am: (EXTRA_DIST): Ship calc.stamp.
+
+2009-08-10  Joel E. Denny  <jdenny@clemson.edu>
+
+	* tests/local.mk (TESTSUITE_AT): Add named-refs.at.
+
+2009-08-10  Joel E. Denny  <jdenny@clemson.edu>
+
+	Miscellaneous code readability improvements.
+
+	* src/reader.c (reader): Move %define front-end variable
+	defaults and checking into...
+	(prepare_percent_define_front_end_variables): ... this new
+	function.
+
+	* src/scan-gram.l (INITIAL): For consistency with string
+	literals, don't store open quote on character literal.  It's
+	discarded before returning anyway.
+	(SC_ESCAPED_CHARACTER): Similarly, don't store close quote.
+	Make length test more readable, and make the character stored
+	for an empty literal more obvious while consistent with the
+	previous behavior.
+
+	* src/symtab.c, src/symtab.h: Rename USER_NUMBER_ALIAS to
+	USER_NUMBER_HAS_STRING_ALIAS throughout.
+	* src/symtab.c (symbol_make_alias): Remove comment from symtab.c
+	that is repeated in symtab.h.  Improve argument names to make it
+	clear which side of the symbol-string alias pair is which.
+	(symbol_check_alias_consistency): Improve local variable names
+	for the same purpose.
+	* src/symtab.h (struct symbol): Make comments about aliases
+	clearer.
+	(symbol_make_alias): Improve comments and argument name.
+	* src/output.c (token_definitions_output): Update for rename to
+	USER_NUMBER_HAS_STRING_ALIAS and improve comments about aliases.
+
+2009-08-08  Alex Rozenman  <rozenman@gmail.com>
+
+	Convert "misleading reference" messages to warnings.
+	* src/scan-code.l: New function 'show_sub_messages', more
+	factoring.
+	* tests/named-ref.at: Adjust tests.
+
+2009-08-06  Joel E. Denny  <jdenny@clemson.edu>
+
+	maint: run "make update-copyright"
+
+2009-08-06  Joel E. Denny  <jdenny@clemson.edu>
+
+	maint: make update-b4-copyright easier to use
+	* build-aux/update-b4-copyright: In warnings, report line
+	numbers rather than character positions.
+	* cfg.mk (update-copyright-local): Set to update-b4-copyright so
+	that update-copyright runs it.
+	* gnulib: Update.
+
+2009-08-05  Joel E. Denny  <jdenny@clemson.edu>
+
+	maint: clean up update-b4-copyright code
+	* build-aux/update-b4-copyright: Do not accept 2-digit
+	UPDATE_COPYRIGHT_YEAR, which was not handled correctly.
+	Don't accept a `[' in a b4_copyright argument.
+	Format code more consistently.
+	Don't assume b4*copyright never occurs.
+
+2009-08-04  Joel E. Denny  <jdenny@clemson.edu>
+
+	maint: automate b4_copyright updates.
+	* Makefile.am (update-b4-copyright): New target rule.
+	* build-aux/local.mk (EXTRA_DIST): Add update-b4-copyright.
+	* build-aux/update-b4-copyright: New.
+	* data/yacc.c: Remove stray characters around b4_copyright
+	invocations.
+
+2009-08-04  Joel E. Denny  <jdenny@clemson.edu>
+
+	maint: automate annual package-wide copyright-year update.
+	* .x-update-copyright: New.
+	* Makefile.am (EXTRA_DIST): Remove maint.mk.
+	* bootstrap.conf (gnulib_modules): Add maintainer-makefile and
+	update-copyright.  Remove gnumakefile, which is implied by
+	maintainer-makefile.
+	* cfg.mk (bootstrap-tools): Copy from old maint.mk.
+	* gnulib: Update.
+	* maint.mk: Remove, now copied from gnulib.
+	* examples/extexi: Add missing "(C)" in copyright statement so
+	update-copyright can recognize it.
+	* src/LR0.h: Likewise.
+	* src/print.h: Likewise.
+	* src/print_graph.h: Likewise.
+	* src/gram.c: Add missing comma in copyright statement.
+	* src/gram.h: Likewise.
+
+2009-08-04  Joel E. Denny  <jdenny@clemson.edu>
+
+	Fix "make distcheck".
+	* examples/calc++/Makefile.am: Say $(srcdir)/calc.stamp instead
+	of just calc.stamp.
+
+2009-08-01  Joel E. Denny  <jdenny@clemson.edu>
+
+	Pacify "gcc -Wunused" for the input function from Flex.
+	Reported by Alex Rozenman.  This warning shows up with gcc-4.3.0
+	and later.
+	* src/scan-code.l: Add "%option noinput", which I cannot find in
+	the Flex manual, but which Flex has supported since at least as
+	far back as 2.5.4.  However, if any of our developers still use
+	Flex 2.5.4, they'll need to stop configuring with
+	--enable-gcc-warnings because "%option noinput" didn't work
+	correctly until Flex 2.5.6.
+	* src/scan-gram.l: Likewise.
+	* src/scan-skel.l: Likewise.
+
+2009-07-31  Alex Rozenman  <rozenman@gmail.com>
+
+	Fix --enable-gcc-warnings problems.
+	* src/reader.c: Adjust variable names.
+	* src/scan-code.l: Fix prototypes and adjust names.
+	* src/named-ref.c: Remove redundant "if".
+
+2009-07-29  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Fix a --enable-gcc-warnings problem.
+	* src/scan-gram.l (SC_ESCAPED_CHARACTER): Actually use length
+	variable.
+
+2009-07-24  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Warn about character literals not of length one.
+	* NEWS (2.5): Document.
+	* src/scan-gram.l (INITIAL): Remove comment that we don't check
+	the length.
+	(SC_ESCAPED_CHARACTER): Warn if length is wrong.
+	* tests/input.at (Bad character literals): New test group.
+
+2009-07-24  Alex Rozenman  <rozenman@gmail.com>
+
+	Fix some memory leaks.
+	* src/named-ref.c: Add a pointer check (named_ref_free).
+	* src/scan-code.l: New function (variant_table_free). Called in
+	code_scanner_free.
+	* src/symlist.c: Call to named_ref_free (symbol_list_free).
+
+2009-07-24  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* src/lalr.c (state_lookahead_tokens_count): Correct comment.
+
+2009-07-22  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Some M4 cleanup in the testsuite.
+	Suggested by Eric Blake at
+	<http://lists.gnu.org/archive/html/bison-patches/2009-04/msg00083.html>.
+	* tests/existing.at (_AT_TEST_EXISTING_GRAMMAR): Do not
+	complicate the code by distinguishing between a missing value
+	and an empty string value for an optional argument.  This fix is
+	allowed by the similar fix in AT_TEST_TABLES_AND_PARSE below.
+	* tests/local.at (_AT_TEST_TABLES_AND_PARSE): Merge into...
+	(AT_TEST_TABLES_AND_PARSE): ... this now that the special
+	arguments are not needed because of the following changes.
+	Fix stale comments.
+	Bison developers should use GNU M4 and should not use
+	POSIXLY_CORRECT when building the test suite, so do not
+	complicate the code by avoiding $10 and above.
+	Do not quote an empty string value for an optional argument, and
+	do not distinguish between a missing value and an empty string
+	value.
+
+2009-07-15  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Revert unnecessary column realignment in --help output.
+	Reported by Akim Demaille at
+	<http://lists.gnu.org/archive/html/bison-patches/2009-06/msg00010.html>.
+	* src/getargs.c (usage): Here.
+
+2009-07-04  Alex Rozenman  <rozenman@gmail.com>
+
+	Alphabetical order in src/local.mk.
+	* src/local.mk: Adjust.
+
+2009-07-04  Alex Rozenman  <rozenman@gmail.com>
+
+	Style changes and factoring.
+	* src/named-ref.h: Add comments.
+	* src/parse-gram.y: Readability and style changes.
+	* src/reader.c: Factoring: assign_named_ref function.
+	* src/scan-code.l: Factoring and style changes. Rename
+	parse_named_ref to parse_ref. Use "c-ctype.h" from gnulib.
+	Use "unsigned" type for variant index. Improve readablity.
+	* src/scan-gram.l: Change error messages and add comments.
+	* src/symlist.h: symbol_list_null: New function decl.
+	* src/symlist.c: symbol_list_null: Implement here.
+	* tests/named-refs.at: Adjust for new error messages.
+
+2009-06-29  Eric Blake  <ebb9@byu.net>
+
+	scan-code: avoid compiler warnings
+	* src/scan-code.l (parse_named_ref): Use correct specifiers.
+
+2009-06-29  Akim Demaille  <demaille@gostai.com>
+
+	build: avoid concurrent extraction of calc++.
+	* examples/calc++/Makefile.am (calc.stamp): New.
+	Depend on it to create the sources of calc++ so that concurrent
+	builds don't launch several "extexi" in parallel.
+	Not only this is inefficient, this also builds incorrect sources
+	with several extractions mixed together.
+
+2009-06-29  Akim Demaille  <demaille@gostai.com>
+
+	parse.error: fix.
+	* data/bison.m4: Move code related to specific variables after the
+	definition of the variable-maintaining macros so that we don't
+	"invoke" b4_percent_define_check_values before it is defined.
+
+2009-06-29  Akim Demaille  <demaille@gostai.com>
+
+	variables: parse.error
+
+	Implement, document, and test the replacement of %error-verbose
+	by %define parse.error "verbose".
+	* data/bison.m4 (b4_error_verbose_if): Reimplement to track the
+	values of the parse.error variable.
+	Make "simple" its default value.
+	Check the valid values.
+	* src/parse-gram.y: Use %define parse.error.
+	(PERCENT_ERROR_VERBOSE): New token.
+	Support it.
+	* src/scan-gram.l: Support %error-verbose.
+
+	* doc/bison.texinfo (Decl Summary): Replace the documentation of
+	%define error-verbose by that of %define parse.error.
+	* NEWS: Document it.
+
+	* tests/actions.at, tests/calc.at: Use parse.error instead of
+	%error-verbose.
+
+2009-06-27  Alex Rozenman  <rozenman@gmail.com>
+
+	Implement support for named symbol references.
+	* src/parse-gram.y: Add new syntax (named_ref.opt).
+	* src/reader.c: Store named refs in symbol lists.
+	* src/reader.h: New argument for symbol_append and
+	action_append functions.
+	* src/scan-code.h: Add new field (named_ref) into
+	code_props data structure. Keeps named ref of midrule
+	actions.
+	* src/scan-code.l: Support for named refs in semantic
+	action code. New function 'parse_named_ref'.
+	* src/scan-gram.l: Support bracketed id.
+	* src/symlist.c: Store named refs in symbol lists.
+	* src/symlist.h: New field in symbol list: named_ref.
+	* src/named-ref.h: New file, a struct for named_ref.
+	* src/named-ref.cp: New file, named_ref_new function.
+	* src/local.mk: Add two new files.
+	* tests/testsuite.at: Include new test group:
+	* tests/named-refs.at: this new file.
+
+2009-06-25  Akim Demaille  <demaille@gostai.com>
+
+	hash: check insertion for memory exhaustion.
+	* src/uniqstr.c (uniqstr_new): New.
+
+2009-06-24  Akim Demaille  <demaille@gostai.com>
+
+	variables: rename namespace as api.namespace.
+	Discussed in
+	http://lists.gnu.org/archive/html/bison-patches/2009-04/msg00033.html
+
+	* data/bison.m4 (b4_percent_define_copy_, b4_percent_define_copy):
+	New.
+	(b4_percent_define_use): New.
+	Use it where applicable.
+	* data/c++.m4: Replace uses of the variable "namespace" by
+	"api.namespace".
+	Default the latter to the former.
+	* doc/bison.texinfo (Decl Summary): Document "namespace" as
+	obsolete.
+	Document api.namespace.
+	Use @samp to document %define uses, keep @code for identifiers.
+	* NEWS: Likewise.
+	* tests/c++.at, tests/input.at: Test api.namespace instead of
+	namespace. (The tests passed with namespace.)
+
+2009-06-11  Akim Demaille  <demaille@gostai.com>
+
+	style changes.
+	* data/xslt/xml2dot.xsl, data/xslt/xml2xhtml.xsl: Space changes.
+	* src/print-xml.c: Style changes.
+	* tests/conflicts.at: Comment changes.
+
+2009-06-11  Akim Demaille  <demaille@gostai.com>
+
+	xml: beware of user strings used to give a %prec to rules.
+	* tests/conflicts.at (%prec with user strings): New.
+	* src/gram.c (grammar_rules_print_xml): Escape the precedence for
+	XML output.
+
+2009-06-11  Akim Demaille  <demaille@gostai.com>
+
+	hash: check insertion for memory exhaustion.
+	* src/muscle-tab.c (muscle_insert, muscle_grow)
+	* src/state.c (state_hash_insert): Check the return value of
+	hash_insert.
+
+2009-06-11  Akim Demaille  <demaille@gostai.com>
+
+	tests: honor TESTSUITEFLAGS in every check target.
+	* tests/local.mk (RUN_TESTSUITE): New.
+	(check-local, installcheck-local, maintainer-check-g++)
+	(maintainer-check-posix, maintainer-check-valgrind): Use it.
+
+2009-06-10  Akim Demaille  <demaille@gostai.com>
+
+	deterministic test suite.
+	Some consistency checks on symbols are performed after all the
+	symbols were read, by an iteration over the symbol table.  This
+	traversal is nondeterministic, which can be a problem for test
+	cases.
+	Avoid this.
+	Addresses another form of nondeterminism reported by Joel E. Denny.
+	http://lists.gnu.org/archive/html/bison-patches/2009-05/msg00023.html
+
+	* tests/input.at (Numbered tokens): Split the hexadecimal/decimal
+	test in two.
+	Use different file names for the three tests to make the
+	maintenance easier.
+
+2009-06-10  Akim Demaille  <demaille@gostai.com>
+
+	gnulib: update.
+	* gnulib: Update to latest.
+	* lib/.cvsignore, lib/.gitignore, m4/.cvsignore,
+	* m4/.gitignore: Regen.
+	* src/symtab.c (symbol_from_uniqstr, semantic_type_from_uniqstr):
+	Call xalloc_die on hash_insert failures.
+	Requested by the new __warn_unused_result__ attribute of
+	hash_insert.
+
+2009-06-10  Akim Demaille  <demaille@gostai.com>
+
+	deterministic user-token-number redeclaration errors.
+	Address nondeterminism reported by Joel E. Denny.
+	http://lists.gnu.org/archive/html/bison-patches/2009-05/msg00023.html
+
+	* src/uniqstr.h: Comment changes.
+	* src/location.h (boundary_cmp, location_cmp): New.
+	* src/symtab.c (user_token_number_redeclaration): New.
+	(symbol_translation): Use it.
+	* tests/input.at (Numbered tokens): Adjust the expected output.
+
+2009-05-25  Akim Demaille  <demaille@gostai.com>
+
+	build: avoid ignored errors.
+	* doc/local.mk ($(CROSS_OPTIONS_TEXI)): Don't generate ignored
+	errors, they pollute the output.
+
+2009-05-22  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Convert multiple variable definition warnings to complaints.
+	* NEWS (2.5): Add a new entry for that change.
+	* doc/bison.texinfo (Decl Summary): Update %define entry.
+	(Bison Options): Update -D/--define/-F/--force-define entry.
+	* src/muscle-tab.c (muscle_percent_define_insert): Implement.
+	* src/muscle-tab.h (muscle_percent_define_insert): Update
+	comments.
+	* tests/input.at (`%define errors'): Update.
+	(`%define, --define, --force-define'): Update.
+
+2009-05-22  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	-F/--force-define and relative %define/-D/--define priorities.
+	* NEWS (2.5): Add documentation to -D/--define entry.
+	* build-aux/cross-options.pl: Hard-code association of
+	--force-define with %define.
+	* doc/bison.texinfo (Decl Summary): In %define entry,
+	cross-reference command-line options.
+	(Bison Options): Add documentation to -D/--define entry.
+	(Option Cross Key): Widen column for --force-define row.
+	* src/getargs.c (usage): Document -F/--force-define.  Realign
+	options in output.
+	(short_options, long_options, getargs): Parse -F/--force-define,
+	and update muscle_percent_define_insert invocations.
+	* src/muscle-tab.h (muscle_percent_define_how): New enum type.
+	(muscle_percent_define_insert): Add argument with that type.
+	* src/muscle-tab.c (muscle_percent_define_insert): Implement
+	-F/--force-define behavior and priorities.
+	(muscle_percent_define_ensure): Update
+	muscle_percent_define_insert invocation.
+	* src/parse-gram.y (prologue_declaration): Update
+	muscle_percent_define_insert invocations.
+	* tests/input.at (`%define, --define'): Rename to...
+	(`%define, --define, --force-define'): ... this and extend.
+
+2009-05-22  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Update some comments to make sense for -D.
+	* data/bison.m4 (b4_check_user_names): In header comments, say
+	"user occurrence" instead of "grammar occurrence".
+	* src/muscle-tab.h (muscle_percent_define_insert): Likewise.
+	(muscle_percent_code_grow): Likewise just for consistency.
+
+2009-05-20  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* data/c++.m4 (b4_namespace_close): Simplify slightly.
+
+2009-05-19  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Handle a trailing `:' in a user-supplied C++ namespace better.
+	* data/c++.m4 (b4_namespace_close): Don't let it be printed
+	among the closing braces here.  This fix might make the
+	generated code easier to debug, but otherwise it should be
+	insignificant because a trailing `:' is a C++ error already.
+
+2009-05-19  Akim Demaille  <demaille@gostai.com>
+
+	remove useless variable.
+	* src/getargs.c (skeleton_arg): Remove now useless variable.
+	Should help the compiler see that this printf-like call is sane.
+
+2009-05-15  Akim Demaille  <demaille@gostai.com>
+
+	Rename token.prefix as api.tokens.prefix.
+	Discussed here.
+	http://lists.gnu.org/archive/html/bison-patches/2009-05/msg00024.html.
+
+	* NEWS, data/bison.m4, data/c.m4, data/java.m4, doc/bison.texinfo,
+	* tests/c++.at, tests/calc.at, tests/java.at, tests/local.at
+	(token.prefix): Rename as...
+	(api.tokens.prefix): this.
+
+2009-05-11  Akim Demaille  <demaille@gostai.com>
+
+	doc: use C++ headers.
+	* doc/bison.texinfo (Calc++ Scanner): Prefer C++ headers to C
+	headers.
+
+2009-05-11  Akim Demaille  <demaille@gostai.com>
+
+	doc: token.prefix
+	* doc/bison.simple (Decl Summary): Document token.prefix.
+	(Calc++ Parser): Various fixes.
+	Formatting changes.
+	Use token.prefix.
+	Introduce a macro TOKEN to shorten the code and make it more
+	readable.
+	(Calc++ Scanner): Adjust.
+	* NEWS (Variable token.prefix): New.
+
+2009-05-04  Akim Demaille  <demaille@gostai.com>
+
+	bison: catch bad symbol names.
+	* src/scan-gram.l({int}{id}): Report as an invalid identifier.
+	* tests/input.at: Adjust.
+
+2009-05-04  Akim Demaille  <demaille@gostai.com>
+
+	identifiers: dashes are letters.
+	Dashes can now start identifiers (symbols and directives).
+
+	* src/scan-gram.l ({letter}): Add dash.
+	({id}): Remove it.
+	* tests/input.at (Symbols): Adjust.
+	Remove stray comment.
+	* tests/regression.at (Invalid inputs): Adjust error message.
+	* doc/bison.texinfo (Symbols): Update.
+
+2009-05-01  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Declare %code to be a permanent feature.
+	* NEWS (2.4.2): Here.
+	* doc/bison.texinfo (Prologue Alternatives): Don't say it's
+	experimental.
+	(Decl Summary): Likewise.
+
+2009-04-30  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Convert underscores to dashes in some %define variable names.
+	For now, just api.push-pull and lr.keep-unreachable-states.
+	Maintain old names for backward compatibility.
+	* NEWS (2.5): Document.
+	* data/c.m4 (b4_identification): Update comment.
+	* data/yacc.c: Update access.
+	* doc/bison.texinfo: Update.
+	* etc/bench.pl.in (bench_push_parser): Update use.
+	* src/files.c (tr): Move to...
+	* src/getargs.c, src/getargs.h (tr): ... here because I can't
+	think of a better place to expose it.  My logic is that, for all
+	uses of tr so far, command-line arguments can be involved, and
+	getargs.h is already included.
+	* src/main.c (main): Update access.
+	* src/muscle_tab.c (muscle_percent_define_insert): Convert old
+	variable names to new variable names before assigning value.
+	* src/reader.c (reader): Update setting default.
+	* tests/calc.at: Update uses.
+	* tests/conflicts.at (Unreachable States After Conflict
+	Resolution): Update use.
+	* tests/input.at (%define enum variables): Update use.
+	(%define backward compatibility): New test group.
+	* tests/push.at: Update uses.
+	* tests/reduce.at: Update uses.
+	* tests/torture.at: Update uses.
+
+2009-04-30  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Set all front-end %define defaults in one place.
+	* src/main.c (main): Move lr.keep_unreachable_states default...
+	* src/reader.c (reader): ... to here.
+
+2009-04-29  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Rename lr.default_reductions to lr.default-reductions.
+	* NEWS (2.5): Here.
+	* doc/bison.texinfo: Here.
+	* src/lalr.c (initialize_LA): Here.
+	* src/print.c (print_reductions): Here.
+	* src/reader.c (reader): Here.
+	* src/tables.c (action_row): Here.
+	* tests/input.at (%define enum variables): Here.
+	* tests/reduce.at (AT_TEST_LR_DEFAULT_REDUCTIONS): Here.
+
+2009-04-29  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Pacify ./configure --enable-gcc-warnings.
+	* tests/input.at (Symbols): Prototype yyerror and yylex.
+
+2009-04-29  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Document how `%define "var" "value"' is not M4-friendly.
+	* src/parse-gram.y (variable): In comments here.
+
+2009-04-24  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Clean up recent patches a little.
+	Reported by Akim Demaille.
+	* doc/bison.texinfo (Understanding): Fix typos.
+	* src/print.c (print_reductions): Don't use negated variable.
+
+2009-04-24  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	List accepted values for a %define enum variable with an invalid value.
+	Suggested by Akim Demaille at
+	<http://lists.gnu.org/archive/html/bison-patches/2009-04/msg00082.html>.
+	* data/bison.m4 (_b4_percent_define_check_values): Implement.
+	* src/muscle-tab.c (muscle_percent_define_check_values): Implement.
+	* tests/input.at (%define lr.default_reductions invalid values): Merge
+	into...
+	(%define enum variables): ... here, and update output.
+
+2009-04-23  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Rename "default rule" to "default reduction".
+	This includes changing variable names in code, changing
+	comments, and renaming %define lr.default_rules to %define
+	lr.default_reductions.
+	* NEWS (2.5): Update IELR documentation.
+	* data/bison.m4 (b4_integral_parser_tables_map): Adjust YYDEFACT
+	documentation.
+	* data/glr.c, data/lalr1.java: Sync copyright dates.
+	* doc/bison.texinfo (Decl Summary): Adjust lr.default_reductions
+	and lr.type documentation.  Make some other wording
+	improvements.
+	(Glossary): Adjust cross-references and Default Reduction
+	definition.
+	* src/lalr.c (state_lookahead_tokens_count): Adjust code.
+	Remove a confusing comment pointed out by Akim Demaille.
+	(initialize_LA): Adjust code.
+	* src/print-xml.c (print_reductions): Adjust code.
+	* src/print.c (print_reductions): Adjust code.
+	* src/reader.c (reader): Adjust code.
+	* src/tables.c (action_row): Adjust code.
+	(token_actions): Adjust code.
+	* src/tables.h: Adjust YYDEFACT documentation.
+	* tests/input.at (%define lr.default_rules invalid values):
+	Rename test group to...
+	(%define lr.default_reductions invalid values): ... this, and
+	update grammar file and expected output.
+	* tests/reduce.at (AT_TEST_LR_DEFAULT_RULES): Rename to...
+	(AT_TEST_LR_DEFAULT_REDUCTIONS): ... this, and update.
+
+2009-04-21  Akim Demaille  <demaille@gostai.com>
+
+	tests: check the use of dashes and periods in symbols.
+	* tests/input.at (Symbol): New test group.
+
+2009-04-21  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Document %define lr.type and lr.default_rules.
+	* NEWS (2.5): Add an entry.
+	* src/getargs.c (usage): Mention IELR(1) and canonical LR(1)
+	besides just LALR(1) and GLR(1).
+	* doc/bison.texinfo (Introduction): Likewise.
+	(Language and Grammar): Bison is no longer limited to LALR(1)
+	restrictions.
+	(GLR parsing): Say deterministic or LR(1) rather than LALR(1)
+	when trying to distinguish from GLR.  Talk about LR(1) grammars
+	rather than LALR(1) grammars.
+	(Decl Summary): In %define api.push_pull entry, say it applies
+	to deterministic parsers in C rather than LALR(1) parsers in C.
+	Add lr.default_rules entry.
+	Add lr.type entry.
+	(Mystery Conflicts): Bison is no longer limited to LALR(1)
+	restrictions.
+	(Generalized LR Parsing): Same changes as for the previous GLR
+	section.
+	(Memory Management): Say deterministic rather than LALR(1).
+	(Understanding): Correct some bison output.
+	Index discussion of "accepting state".
+	Say deterministic rather than LALR(1).
+	(Bison Options): In --yacc entry, say deterministic rather than
+	LALR(1).
+	In --report, --graph, and --xml entries, just don't mention
+	LALR(1).
+	(C++ Parsers): Say deterministic rather than LALR(1).
+	(Table of Symbols): Likewise in YYSTACK_USE_ALLOCA entry.
+	(Glossary): Add Accepting State, Consistent State, Default Rule,
+	and IELR(1) definitions.
+	In Generalized LR (GLR) definition, make same changes as in
+	previous GLR sections.
+	In LALR(1) definition, say Bison uses LALR(1) by default rather
+	than implying Bison is limited to LALR(1).
+	(LocalWords): Add IELR.
+
+2009-04-21  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Finish implementing %define lr.type.
+	Its value can be "LALR", "IELR", or "canonical LR".
+	* lib/timevar.def (TV_IELR_PHASE1): New var.
+	(TV_IELR_PHASE2): New var.
+	(TV_IELR_PHASE3): New var.
+	(TV_IELR_PHASE4): New var.
+	* src/Makefile.am (bison_SOURCES): Add AnnotationList.c,
+	AnnotationList.h, InadequacyList.c, InadequacyList.h, Sbitset.c,
+	Sbitset.h, ielr.h, and ielr.c.
+	* src/getargs.h, src/getargs.c (enum trace, trace_args,
+	trace_types): Add trace_ielr.
+	* src/lalr.h, src/lalr.c (ngotos): Export it.
+	(F): Rename to...
+	(goto_follows): ... this, update all uses, and export it.
+	(set_goto_map): Export it.
+	(map_goto): Export it.
+	(compute_lookahead_tokens): Don't free goto_follows yet.  Now
+	handled in ielr.
+	(initialize_LA): Export it.  Move lookback allocation to...
+	(lalr): ... here because, for canonical LR, initialize_LA must
+	be invoked but lookback and much of the rest of LALR isn't
+	needed.
+	* main.c (main): Instead of lalr, invoke ielr, which invokes
+	lalr.
+	* src/reader.c (reader): Default lr.type to "LALR".
+	Default lr.default_rules to "accepting" if lr.type is "canonical
+	LR".  Leave the default as "all" otherwise.
+	Check for a valid lr.type value.
+	* src/state.h, src/state.c (struct state_list): Add state_list
+	member.
+	(state_new): Initialize state_list member to NULL.
+	(state_new_isocore): New function, exported.
+	* tests/existing.at (AT_TEST_EXISTING_GRAMMAR): New macro that
+	exercises all values of lr.type.
+	(GNU AWK Grammar): Rename test group to...
+	(GNU AWK 3.1.0 Grammar): ... this, and extend to use
+	AT_TEST_EXISTING_GRAMMAR.
+	(GNU Cim Grammar): Extend to use AT_TEST_EXISTING_GRAMMAR.
+	(GNU pic Grammar): Rename test group to...
+	(GNU pic (Groff 1.18.1) Grammar): ... this, and extend to use
+	AT_TEST_EXISTING_GRAMMAR.
+	* tests/reduce.at (AT_TEST_LR_TYPE): New macro that exercises
+	all values of lr.type.
+	(Single State Split): New test groups using AT_TEST_LR_TYPE.
+	(Lane Split): Likewise.
+	(Complex Lane Split): Likewise.
+	(Split During Added Lookahead Propagation): Likewise.
+
+2009-04-21  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Add new files for IELR and canonical LR implementation.
+	* src/AnnotationList.c: New.
+	* src/AnnotationList.h: New.
+	* src/InadequacyList.c: New.
+	* src/InadequacyList.h: New.
+	* src/Sbitset.c: New.
+	* src/Sbitset.h: New.
+	* src/ielr.c: New.
+	* src/ielr.h: New.
+
+2009-04-20  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Implement %define lr.default_rules.
+	Its value describes the states that are permitted to contain
+	default rules: "all", "consistent", or "accepting".
+	* src/reader.c (reader): Default lr.default_rules to "all".
+	Check for a valid lr.default_rules value.
+	* src/lalr.c (state_lookahead_tokens_count): If lr.default_rules
+	is "accepting", then only mark the accepting state as
+	consistent.
+	(initialize_LA): Tell state_lookahead_tokens_count whether
+	lr.default_rules is "accepting".
+	* src/tables.c (action_row): If lr.default_rules is not "all",
+	then disable default rules in inconsistent states.
+	* src/print.c (print_reductions): Use this opportunity to
+	perform some assertions about whether lr.default_rules was
+	obeyed correctly.
+	* tests/local.at (AT_TEST_TABLES_AND_PARSE): New macro that
+	helps with checking the parser tables for a grammar.
+	* tests/input.at (%define lr.default_rules invalid values): New
+	test group.
+	* tests/reduce.at (AT_TEST_LR_DEFAULT_RULES): New macro using
+	AT_TEST_TABLES_AND_PARSE.
+	(`no %define lr.default_rules'): New test group generated by
+	AT_TEST_LR_DEFAULT_RULES.
+	(`%define lr.default_rules "all"'): Likewise.
+	(`%define lr.default_rules "consistent"'): Likewise.
+	(`%define lr.default_rules "accepting"'): Likewise.
+
+2009-04-20  Akim Demaille  <demaille@gostai.com>
+
+	Formatting change.
+
+2009-04-20  Akim Demaille  <demaille@gostai.com>
+
+	bison: factoring.
+	* src/output.c (token_definitions_output): Use symbol_id_get
+	instead of duplicating its logic.
+	* TODO (YYERRCODE): Extend.
+
+2009-04-20  Akim Demaille  <demaille@gostai.com>
+
+	variables: prefer error-verbose to error_verbose.
+	* data/bison.m4 (b4_error_verbose_if): Based on error-verbose
+	instead of error_verbose.
+	* src/scan-gram.l (%error-verbose): Map to the error-verbose
+	variable.
+	* doc/bison.texinfo: Promote %define error-verbose instead of
+	%error-verbose.
+	* tests/actions.at: Prefer %define error-verbose to %error-verbose.
+
+2009-04-15  Akim Demaille  <demaille@gostai.com>
+
+	variables: accept dashes.
+	* data/bison.m4 (b4_percent_define_if_define_): Also map dashes to
+	underscores.
+	* src/scan-gram.l ({id}): Also accept dashes after the initial
+	letter.
+	({directive}): Use {id}.
+	* src/parse-gram.y: Comment and formatting changes.
+	* doc/bison.texinfo (Symbols): Adjust the lexical definitions of
+	symbols.
+	* src/complain.h, src/complain.c (yacc_at): New.
+	* src/symtab.c (symbol_new): Use yacc_at to report inappropriate
+	symbol names.
+	* src/output.c (token_definitions_output): Do not #define token
+	names with dashes.
+
+2009-04-20  Akim Demaille  <demaille@gostai.com>
+
+	Consistently refer to Yacc, not YACC.
+	* src/getargs.c (usage, warnings_args): s/YACC/Yacc/.
+
+2009-04-17  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Pacify make maintainer-check-posix.
+	* tests/input.at (%define, --define): Move bison command-line
+	options before grammar file name.
+
+2009-04-04  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Document semicolon warnings.
+	* NEWS (2.5): Here.
+
+2009-04-14  Akim Demaille  <demaille@gostai.com>
+
+	variables: use `parse.assert' instead of `assert'.
+	* TODO (assert): Remove.
+	* data/bison.m4 (b4_assert_if): Replace with...
+	(b4_parse_assert_if): this.
+	* data/lalr1.cc, data/variant.hh, tests/c++.at: Adjust.
+	* doc/bison.texinfo (Decl Summary): Document parse.assert.
+
+2009-04-14  Akim Demaille  <demaille@gostai.com>
+
+	variables: use `parse.trace' instead of `debug'.
+	* src/getargs.c (getargs): Map -t to %define trace.parse.
+	* src/scan-gram.l (%debug): Map to %define trace.parse.
+	* data/bison.m4 (b4_percent_define_if_define): Map `.' in variable
+	names to `_' in macro names.
+	(b4_debug_if): Replace with...
+	(b4_parse_trace_if): this.
+	* data/glr.c, data/glr.cc, data/lalr1.cc, data/lalr1.java,
+	* data/yacc.c: Adjust.
+	* doc/bison.texinfo (Decl Summary): Document %debug as obsoleted.
+	Use @code to label the variable list.
+	Document the variable parse.trace.
+	(Tracing): Promote the parse.trace variable.
+	* TODO: %printer is not documented.
+
+2009-04-14  Akim Demaille  <demaille@gostai.com>
+
+	doc: minor fixes.
+	* doc/bison.texinfo (Decl Summary): Fix entry about %debug.
+	(Table of Symbols): Remove duplicate entry for %debug.
+
+2009-04-10  Eric Blake  <ebb9@byu.net>
+
+	submodules: update to latest
+	* submodules/autoconf: Use latest upstream Autoconf.
+
+2009-04-06  Eric Blake  <ebb9@byu.net>
+
+	Work around autoconf 2.63b bug in testsuite.
+	* tests/output.at (AT_CHECK_OUTPUT_FILE_NAME): Avoid tripping
+	autoconf bug related to # in test.
+
+2009-04-06  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	* NEWS (2.5): New section.  Describe new -D/--define feature.
+
+2009-04-06  Akim Demaille  <demaille@gostai.com>
+
+	Regen.
+	* src/parse-gram.h, src/parse-gram.c: Regen.
+
+2009-04-06  Akim Demaille  <demaille@gostai.com>
+
+	rename muscle_tab.* as muscle-tab.* for consistency.
+	* src/muscle_tab.h, src/muscle_tab.c: Rename as...
+	* src/muscle-tab.h, src/muscle-tab.c: these.
+	* src/getargs.c, src/local.mk, src/main.c, src/output.c,
+	* src/parse-gram.y, src/reader.c, src/scan-code.l: Adjust.
+
+2009-04-06  Akim Demaille  <demaille@gostai.com>
+
+	Makefile: introduce $(BISON).
+	* src/local.mk (BISON): New.
+	(YACC): Use it.
+
+2009-04-06  Akim Demaille  <demaille@gostai.com>
+
+	parser: handle %locations as %define locations.
+	* src/getargs.h, src/getargs.c (locations_flag): Remove.
+	* src/getargs.c, src/scan-code.l: Use muscle_percent_define_ensure
+	to set "locations" to true.
+	* src/output.c (prepare): Don't output "locations".
+	* src/scan-gram.l (%locations): Handle it as a %<flag>.
+	* src/parse-gram.y: It's no longer a token.
+	Don't handle it.
+	* data/bison.m4 (b4_locations_if): Define it with
+	b4_percent_define_if_define.
+	* data/c.m4, data/glr.cc: Adjust.
+
+2009-04-06  Akim Demaille  <demaille@gostai.com>
+
+	Regen.
+	* src/parse-gram.c: Regen.
+
+2009-04-06  Akim Demaille  <demaille@gostai.com>
+
+	muscle: factor the handling of obsolete of obsolete directives.
+	Suggested by Joel E. Denny.
+
+	* src/muscle_tab.h, src/muscle_tab.c (muscle_percent_define_ensure):
+	New, extracted from...
+	* src/parse-gram.y (prologue_declaration: pure-parser): here.
+	Remove it.
+	(prologue_declaration: "%<flag>"): Use
+	muscle_percent_define_ensure.
+	(%error-verbose, %pure-parser): No longer tokens.
+	* src/scan-gram.l (pure-parser): Return as a %<flag>.
+
+2009-04-06  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Fix options documentation.
+	* build-aux/cross-options.pl: As in --help output, write optional
+	arguments as [=ARG] not =[ARG].
+	* doc/bison.texinfo (Bison Options): Add -W/--warnings argument.
+
+2009-04-04  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Replace BISON_PROG_GNU_M4 with Autoconf's AC_PROG_GNU_M4.
+	If the first m4 in $PATH is wrong, it keeps looking.  Moreover, its
+	requirements for a correct m4 are stricter.
+	* m4/m4.m4: Make it a symbolic link to submodules/autoconf/m4/m4.m4.
+	* configure.ac: Update to use AC_PROG_GNU_M4.
+	Reported by Eric Blake.
+
+2009-04-03  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Help with updating web manual.
+	* HACKING: Incorporate instructions from gnulib/doc/README.
+	* bootstrap.conf (gnulib_modules): Add gendocs.
+
+2009-04-03  Akim Demaille  <demaille@gostai.com>
+
+	Regen.
+	* src/parse-gram.h, src/parse-gram.c: Regen.
+
+2009-04-03  Akim Demaille  <demaille@gostai.com>
+
+	Factor %FLAG at scan level.
+	* src/parse-gram.y (PERCENT_DEBUG, PERCENT_ERROR_VERBOSE): Token
+	definitions and associated rules, replaced by....
+	(PERCENT_FLAG): this new token type, and rule.
+	* src/scan-gram.l (RETURN_PERCENT_FLAG): New.
+	Use it for %debug and %error-verbose.
+
+2009-04-03  Akim Demaille  <demaille@gostai.com>
+
+	Regen.
+	* src/parse-gram.h, src/parse-gram.c: Regen.
+
+2009-04-03  Akim Demaille  <demaille@gostai.com>
+
+	Treat %debug as %define debug.
+	* data/bison.m4 (b4_debug_if): New.
+	* data/glr.c, data/glr.cc, data/lalr1.cc, data/yacc.c,
+	* data/lalr1.java: Use it instead of b4_debug_flag.
+	* src/getargs.h, src/getargs.c (debug_flag): Remove.
+	* src/output.c (prepare): Don't output it.
+	* src/parse-gram.y: Treat %debug as %define debug.
+
+2009-04-03  Akim Demaille  <demaille@gostai.com>
+
+	Treat %error-verbose as %define error_verbose.
+	This allows to pass -Derror_verbose on the command line.  Better
+	yet, it allows to pass -Derror_verbose=$(ERROR_VERBOSE), with
+	ERROR_VERBOSE being defined as false or true.
+	* data/bison.m4 (b4_percent_define_if_define): Instead of relying
+	on b4_percent_define_ifdef, for does not check the defined value,
+	but only whether the symbol is defined, rely on
+	b4_percent_define_flag_if, so that a value of "false" is processed
+	as a false.
+	If not defined, define the flag to "false".
+	(b4_error_verbose_if): New.
+	* data/glr.c, data/lalr1.cc, data/yacc.c: Use it instead of
+	b4_error_verbose_flag.
+	* src/getargs.h, src/getargs.c (error_verbose_flag): Remove.
+	* src/output.c (prepare): Don't output it.
+	* src/parse-gram.y (%error-verbose): Treat as %define error_verbose.
+
+2009-04-03  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Fix strange %define locations for default values.
+	Reported by Akim Demaille at
+	<http://lists.gnu.org/archive/html/bug-bison/2007-12/msg00001.html>
+	and discussed again starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2008-11/msg00102.html>.
+	* data/bison.m4 (b4_percent_define_default): Leave syncline blank
+	because location information is bogus.
+	Use angle brackets to delimit fake file name because square brackets
+	look like underexpanded m4.  Choose a better fake file name.
+	Use negative line numbers.
+	* src/muscle_tab.c (muscle_percent_define_default): Likewise.
+	* src/location.c (location_print): If line for a boundary is negative,
+	only print that boundary's file name.
+	* src/location.h: Document that.
+	* tests/skeletons.at (%define Boolean variables: invalid skeleton
+	defaults): Update output.
+
+2009-04-03  Joel E. Denny  <jdenny@ces.clemson.edu>
+
+	Pacify ./configure --enable-gcc-warnings.
+	* Makefile.am (AM_CFLAGS): Remove $(WERROR_CFLAGS) because many files
+	in lib won't compile with it.
+	* src/local.mk (src_bison_CFLAGS): Use $(WERROR_CFLAGS) here only.
+
+2009-03-31  Akim Demaille  <demaille@gostai.com>
+
+	bootstrap: --help to stdout.
+	* bootstrap (usage): Don't send --help to stderr.
+	Use a here doc instead of a long string.
+
+2009-03-31  Akim Demaille  <demaille@gostai.com>
+
+	bootstrap: README-hacking no longer exists
+	* bootstrap (checkout_only_file): Set to HACKING.
+
+2009-03-26  Akim Demaille  <demaille@gostai.com>
+
+	doc: merge HACKING and README-hacking.
+	Two files is confusing.
+	Reported by Alexandre Duret-Lutz.
+
+	* README-hacking: Merge into...
+	* HACKING (Working from the repository): here.
+
+2009-03-26  Akim Demaille  <demaille@gostai.com>
+
+	doc: update README-hacking.
+	* README-hacking: We now use git and git submodules.
+	Reported by Ralf Wildenhues and Alexandre Duret-Lutz.
+
+2009-03-26  Akim Demaille  <demaille@gostai.com>
+
+	lalr1.cc: avoid GCC 4.3 warnings.
+	GCC 4.3 now warns about "a || b && c" and asks for explicit
+	parentheses.
+	Reported by Alexandre Duret-Lutz.
+	* data/location.cc: Update copyright years.
+	(Position::operator==): Use parens to make precedence explicit.
+	Compare lines and columns first, as they are more likely to be
+	different, and they are faster to compare.
+
+2009-03-26  Akim Demaille  <demaille@gostai.com>
+
+	gnulib: update.
+	* gnulib: Update to latest.
+	* src/local.mk (AM_CFLAGS): Move to...
+	* Makefile.am: here.
+	* etc/prefix-gnulib-mk (prefix_assignment): Also transform
+	AM_CFLAGS.
+
+2009-03-02  Akim Demaille  <demaille@gostai.com>
+
+	Comment changes.
+
+2009-03-02  Akim Demaille  <demaille@gostai.com>
+
+	Share b4_yytranslate_define.
+	* data/lalr1.cc (b4_yytranslate_define): Move to...
+	* data/c++.m4: here.
+
+2009-03-02  Akim Demaille  <demaille@gostai.com>
+
+	Use locations in the variant example.
+	Yes, this obfuscates the point of this example, variants only.
+	But glr.cc cannot work (yet?) without locations.  This change
+	makes it easier to use this example with glr.cc.
+
+	* examples/variant.yy (assert): %define it.
+	(locations): Request them.
+	(yylex): Bind the location to the stage.
+
+2009-03-02  Akim Demaille  <demaille@gostai.com>
+
+	Dub make_TOKEN as a public type interface.
+	* data/c++.m4 (b4_symbol_constructor_declare)
+	(b4_symbol_constructor_define): New empty stubs.
+	(b4_public_types_declare, b4_public_types_define): Use them.
+	* data/lalr1.cc (b4_symbol_constructor_declare)
+	(b4_symbol_constructor_declare_)
+	(b4_symbol_constructor_define_, b4_symbol_constructor_define):
+	Move to...
+	* data/variant.hh: here.
+	Remove the "b4_variant_if" parts, as variant.hh is loaded only if
+	needed.
+	* data/lalr1.cc: No longer invoke b4_symbol_constructor_define and
+	b4_symbol_constructor_declare, as it is now done by
+	b4_public_types_define and b4_public_types_declare.
+
 2009-03-02  Akim Demaille  <demaille@gostai.com>
 
 	Coding style changes.
@@ -5959,9 +8542,12 @@
 
 2006-09-15  Bob Rossi  <bob@brasko.net>
 
+	Add support for push parsing.  Based on the original work of
+	Odd Arild Olsen <oao@fibula.no>.
 	* 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.
+	* data/push.c: New file.
 	* src/getargs.c (push_parser): New var.
 	* src/getargs.h (push_parser): New declaration.
 	* src/output.c (prepare): Add macro insertion of `push_flag'.
@@ -23135,8 +25721,8 @@
 	-----
 
 	Copyright (C) 1987, 1988, 1991, 1992, 1993, 1994, 1995, 1996,
-	1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
-	Free Software Foundation, Inc.
+	1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
+	2008, 2009, 2010 Free Software Foundation, Inc.
 
 	Copying and distribution of this file, with or without
 	modification, are permitted provided the copyright notice and this