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+2011-03-20  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	lr.default-reductions: rename "full" value to "most".
+	Unlike "consistent" and "accepting", "full" doesn't answer the
+	question of "which states".
+	* doc/bison.texinfo (%define Summary): Update.
+	(Default Reductions): Update.
+	* src/print.c (print_reductions): Update.
+	* src/reader.c (prepare_percent_define_front_end_variables):
+	Update.
+	* src/tables.c (action_row): Update.
+	* tests/input.at (%define enum variables): Update.
+	* tests/reduce.at (%define lr.default-reductions): Update.
+
+2011-03-13  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	* src/parse-gram.c, src/parse-gram.h: Regenerate.
+
+2011-03-09  Akim Demaille  <akim@lrde.epita.fr>
+
+	named references: fix double free.
+	In `rhs[name]: "a" | "b"', do not free "name" twice.
+	Reported by Tys Lefering.
+	<http://lists.gnu.org/archive/html/bug-bison/2010-06/msg00002.html>
+	* src/named-ref.h, src/named-ref.c (named_ref_copy): New.
+	* src/parse-gram.y (current_lhs): Rename as...
+	(current_lhs_symbol): this.
+	(current_lhs): New function.  Use it to free the current lhs
+	named reference.
+	* src/reader.c: Bind lhs to a copy of the current named reference.
+	* src/symlist.c: Rely on free (0) being valid.
+	* tests/named-refs.at: Test this.
+
+2011-03-09  Akim Demaille  <akim@lrde.epita.fr>
+
+	tests: style changes.
+	* tests/named-refs.at (Redundant words in LHS brackets)
+	(Unresolved references): here.
+
+2011-03-06  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	java: fix parser tracing bug.
+	* NEWS (2.5): Document.
+	* data/lalr1.java (YYParser::YYStack::print): Don't skip top
+	element.
+
+2011-03-06  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	java: finish fixing parser stack popping bug.
+	* NEWS (2.5): Document.
+	* data/lalr1.java (YYParser::YYStack::pop): Fix off-by-one error
+	in clearing the location stack.  Also fix pop function that
+	accepts no arguments.
+
+2011-03-06  Angelo Borsotti  <angelo.borsotti@gmail.com>  (tiny change)
+
+	java: fix parser stack popping bug.
+	Reported at
+	<http://lists.gnu.org/archive/html/bug-bison/2011-02/msg00005.html>.
+	* THANKS (Angelo Borsotti): Add.
+	* data/lalr1.java (YYParser::YYStack::pop): Fix off-by-one error
+	in clearing the value stack.  Previously, the top element of the
+	stack wasn't cleared and so the value was not garbage collected.
+
+2011-03-06  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: cite publication for LAC.
+	* doc/bison.texinfo (LAC): Here.
+
+2011-03-06  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: clean up terminology for mysterious conflicts.
+	* doc/bison.texinfo (Mystery Conflicts): Rename node to...
+	(Mysterious Conflicts): ... this, which is already the section
+	title and the name used in the index.  Update all cross-references
+	to this node.  Also, don't imply that R/R conflicts are the only
+	kind of mysterious conflict.
+
+2011-03-06  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	lr.default-reductions: rename "all" value to "full".
+	States that shift the error token do not have default reductions,
+	and GLR disables some default reductions, so "all" was a misnomer.
+	* doc/bison.texinfo (%define Summary): Update.
+	(Default Reductions): Update.
+	* src/print.c (print_reductions): Update.
+	* src/reader.c (prepare_percent_define_front_end_variables):
+	Update.
+	* src/tables.c (action_row): Update.
+	* tests/input.at (%define enum variables): Update.
+	* tests/reduce.at (%define lr.default-reductions): Update.
+
+2011-03-06  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: create a new Tuning LR section in the manual.
+	And clean up all other documentation of the features described
+	there.
+	* NEWS (2.5): Tweak wording of lr.type and parse.lac entries a
+	bit, update the cross-references to the manual, and point out that
+	LAC has caveats.  Don't be so adamant that IELR+LAC=canonical LR.
+	That is, as the referenced section in the manual documents, LAC
+	does not fix infinite parsing loops on syntax errors.
+	* doc/bison.texinfo: Consistently drop the "(1)" suffix from LALR,
+	IELR, and LR in @cindex.
+	(%define Summary): Condense the entries for lr.default-reductions,
+	lr.keep-unreachable-states, lr.type, and parse.lac into brief
+	summaries, and cross-reference the appropriate subsections of
+	Tuning LR.  For parse.lac, mention that it's only implemented for
+	deterministic parsers in C.
+	(Error Reporting): When mentioning %error-verbose, mention LAC,
+	and add cross-reference to the LAC section.
+	(Tuning LR): New section with an extended version of the
+	documentation removed from %define Summary.  Change all
+	cross-references in the manual to point here instead of there.
+	(Calc++ Parser): When mentioning %error-verbose, mention LAC, and
+	add cross-reference to the LAC section.
+	(Table of Symbols): In %error-verbose and YYERROR_VERBOSE entries,
+	add cross-references to Error Reporting.
+	(Glossary): Capitalize entry titles consistently.  Add definitions
+	for "defaulted state" and "unreachable state".  Expand IELR
+	acronym in IELR's entry.
+
+2011-02-20  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: add bibliography to manual.
+	* doc/bison.texinfo (Mystery Conflicts): Cross-reference
+	bibliography instead of citing publications directly.
+	(Generalized LR Parsing): Likewise.
+	(Bibliography): New section.  Not all entries are cross-referenced
+	yet, but that will come in future patches.
+
+2011-02-19  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	java: test and document previous bug fix.
+	* NEWS (2.5): Document it.
+	* tests/java.at (_AT_DATA_JAVA_CALC_Y): To one of the yyerror
+	invocations, pass a location that spans multiple tokens.  Change
+	yyerror to report all of a location rather than just the begin
+	position.  Extend yylex and Position to count tokens on a line.
+	Remove getHashCode as it's unused.  Update all expected output.
+
+2011-02-19  Bernd Kiefer  <kiefer@dfki.de>  (tiny change)
+
+	java: fix location handling bug.
+	Reported at
+	<http://lists.gnu.org/archive/html/bison-patches/2011-02/msg00005.html>.
+	* data/lalr1.java (YYParser::yylloc): For non-empty RHS, fix
+	reversed access to location stack.
+	* THANKS (Bernd Kiefer): Add.
+
+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.
+
+2011-02-06  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: clean up new subsections in manual.
+	* doc/bison.texinfo (%define Summary): Reword so it reads well as
+	a separate section.  For example, add an intro, and move most of
+	the text outside of the @deffn so it is not indented so far.
+	(%code Summary): Likewise.
+	(Table of Symbols): Reword %code entry to match the %code entry in
+	Decl Summary.
+
+2011-02-06  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: finish splitting apart the manual's Decl Summary section.
+	Suggested by Akim Demaille at
+	<http://lists.gnu.org/archive/html/bison-patches/2009-05/msg00013.html>.
+	* doc/bison.texinfo (Decl Summary): Extract most of the %define
+	entry into...
+	(%define Summary): ... this new subsection, and update all
+	cross-references.  For readability of the patches, rewriting of
+	the text so it makes sense as a separate subsection will come in a
+	later patch.  Moreover, the majority of the text describing the
+	various new LR features should likely move to another new section
+	somewhere.
+
+2011-02-06  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: begin to split apart the manual's Decl Summary section.
+	Discussed in thread starting at
+	<http://lists.gnu.org/archive/html/bison-patches/2009-05/msg00013.html>.
+	* doc/bison.texinfo (Decl Summary): Extract most of the %code
+	entry into...
+	(%code Summary): ... this new subsection, and update all
+	cross-references.  For readability of the patches, rewriting of
+	the text so it makes sense as a separate subsection will come in a
+	later patch.
+
+2011-02-06  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: clean up naming of various Bison files.
+	The Bison manual's names for various files associated with a Bison
+	parser has devolved into inconsistency.  This patch makes the
+	naming consistent for the most important files.  First, it chooses
+	"grammar file" over "input file".  The former appears to be more
+	traditional in the Bison manual, and Bison has other input
+	files (skeletons).  Second, it chooses "parser implementation
+	file" over names like "parser file", "parser source file", "parser
+	source code file", and "parser output file".  The new name makes
+	it clearer where Bison generates the main parser implementation,
+	and it is easily distinguishable from "parser header file".
+	* doc/bison.texinfo: Implement throughout.
+
+2011-02-06  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: give credit to more of Bison's developers.
+	* doc/bison.texinfo (Introduction): Don't imply that only Robert
+	Corbett, Richard Stallman, and Wilfred Hansen have contributed to
+	Bison.  However, I don't have time to write a full history, so
+	just point readers to THANKS and ChangeLog.
+
+2011-02-06  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: document experimental features better.
+	* doc/bison.texinfo (Introduction): Say that IELR(1) and canonical
+	LR(1) are experimental.  Mention Java.  Normally experimental
+	features probably shouldn't be mentioned in the introduction.
+	However, if Bison's limitations to LALR(1), C, and C++ are so
+	important that they should be mentioned here, then it's important
+	to point out that Bison is beginning to escape those limitations.
+	Moreover, these particular experimental features have very little
+	chance of being removed.
+	* src/getargs.c (usage): Say that IELR(1) and canonical LR(1) are
+	experimental.
+
+2011-01-29  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	Do not allow identifiers that start with a dash.
+	This cleans up our previous fixes for a bug whereby Bison
+	discarded `.field' in `$-1.field'.  The previous fixes were less
+	restrictive about where a dash could appear in an identifier, but
+	the restrictions were hard to explain.  That bug was reported and
+	this final fix was originally suggested by Paul Hilfinger.  This
+	also fixes a remaining bug reported by Paul Eggert whereby Bison
+	parses `%token ID -123' as `%token ID - 123' and handles `-' as an
+	identifier.  Now, `-' cannot be an identifier.  Discussed in
+	threads beginning at
+	<http://lists.gnu.org/archive/html/bug-bison/2011-01/msg00000.html>,
+	<http://lists.gnu.org/archive/html/bug-bison/2011-01/msg00004.html>.
+	* NEWS (2.5): Update entry describing the dash extension to
+	grammar symbol names.  Also, move that entry before the named
+	references entry because the latter mentions the former.
+	* doc/bison.texinfo (Symbol): Update documentation for symbol
+	names.  As suggested by Paul Eggert, mention the effect of periods
+	and dashes on named references.
+	(Decl Summary): Update documentation for unquoted %define values,
+	which, as a side effect, can no longer start with dashes either.
+	* src/scan-code.l (id): Implement.
+	* src/scan-gram.l (id): Implement.
+	* tests/actions.at (Exotic Dollars): Extend test group to exercise
+	bug reported by Paul Hilfinger.
+	* tests/input.at (Symbols): Update test group, and extend to
+	exercise bug reported by Paul Eggert.
+	* tests/named-refs.at (Stray symbols in brackets): Update test
+	group.
+	($ or @ followed by . or -): Likewise.
+	* tests/regression.at (Invalid inputs): Likewise.
+
+2011-01-24  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	* data/yacc.c: Fix last apostrophe warning from xgettext.
+
+2011-01-09  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Fix minor problems encountered by a fresh bootstrap.
+	* data/glr.c, data/yacc.c: Do not use apostrophes in '#' comments,
+	as they confuse xgettext, which tries to parse them as C character
+	constants in a preprocessor directive.
+	* data/yacc.c (yy_lac): Don't use printf %d format on *yyesp, as
+	that expression might not promote to int on some platforms.
+	* src/parse-gram.c, src/parse-gram.h: Regenerate.
+
+2011-01-09  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	Improve error messages for `$' or `@' followed by `.' or `-'.
+	Previously, for this special case of an invalid reference, the
+	usual "symbol not found in production:" was printed.  However,
+	because the symbol name was parsed as the empty string, that
+	message was followed immediately by a newline instead of a symbol
+	name.  In reality, this is a syntax error, so the reference is
+	invalid regardless of the symbols actually appearing in the
+	production.  Discussed at
+	<http://lists.gnu.org/archive/html/bison-patches/2011-01/msg00012.html>.
+	* src/scan-code.l (parse_ref): Report the above case as a syntax
+	error.  Other than that, continue to handle this case like any
+	other invalid reference that Bison manages to parse because
+	"possibly meant" messages can still be helpful to the user.
+	* tests/named-refs.at ($ or @ followed by . or -): New test group.
+
+2011-01-08  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: don't use @acronym.
+	Lately, many GNU packages are dropping it.  See
+	<http://lists.gnu.org/archive/html/bison-patches/2011-01/msg00003.html>.
+	* doc/bison.texinfo: Remove all uses.
+
+2011-01-05  Alex Rozenman  <rozenman@gmail.com>
+
+	Do not allow identifiers that start with a negative number.
+	Reported by Paul Hilfinger as a side effect of named references
+	support at
+	<http://lists.gnu.org/archive/html/bug-bison/2011-01/msg00000.html>.
+	Suggested by Paul Eggert.
+	* src/scan-code.l ({letter}, {id}): Adjust lexical definitions.
+	* src/scan-gram.l ({letter}, {id}): Likewise.
+
+2011-01-03  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	* ChangeLog (2011-01-02): improve description.
+
+2011-01-03  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	maint: don't update copyright years in bootstrap.
+	* .x-update-copyright: Add entry for bootstrap.
+	* bootstrap: Remove 2011 from copyright years.  The bootstrap
+	version we're currently using comes from an older version of
+	gnulib.
+	* bootstrap.conf (bootstrap_sync): Add comments explaining this
+	issue.
+
+2011-01-02  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	maint: run "make update-copyright".
+
+2011-01-02  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	maint: prepare to use year ranges in copyright notices.
+	* README (Copyright statements): New section explaining the range
+	notation.  The GNU maintainers document requires this explanation:
+	<http://www.gnu.org/prep/maintain/maintain.html#Copyright-Notices>.
+	I copied our explanation from coreutils.
+	* build-aux/update-b4-copyright: Revert 2010-06-17 changes that
+	disabled Bison's automated use of ranges.
+	* cfg.mk (update-copyright-env): Likewise.
+
+2011-01-02  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	Correct my email address.
+	* ChangeLog: In all recent entries.
+	* THANKS (Joel E. Denny): Here.
+
+2010-12-19  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: cleanup.
+	* NEWS (2.5): Try to sort entries according to how interesting
+	users might find them.
+
+2010-12-19  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: cleanup.
+	* NEWS (2.5): Make some minor improvements to wording, and format
+	entries more consistently.
+	* doc/bison.texinfo (Language and Grammar): Point out that IELR
+	and canonical LR are experimental features.
+	(Decl Summary): In list of %define variables, make wording more
+	consistent.  Improve discussion of using LALR for GLR.
+
+2010-12-19  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	parse.lac: document.
+	* NEWS (2.5): Add entry for LAC, and mention LAC in entry for
+	other corrections to verbose syntax error messages.
+	* doc/bison.texinfo (Decl Summary): Rewrite entries for
+	lr.default-reductions and lr.type to be clearer, to mention
+	%nonassoc's effect on canonical LR, and to mention LAC.  Add entry
+	for parse.lac.
+	(Glossary): Add entry for LAC.
+
+2010-12-11  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	parse.lac: implement exploratory stack reallocations.
+	* data/yacc.c: Rename %define variable parse.lac.es-capacity to
+	parse.lac.es-capacity-initial.  Accept parse.lac.memory-trace
+	with values of "failures" (default) or "full".
+	(b4_declare_parser_state_variables): Add yyesa, yyes, and
+	yyes_capacity variables.
+	(YYSTACK_USE_ALLOCA): Ignore it if LAC requested.
+	(YYSTACK_ALLOC, YYSTACK_FREE, YYSTACK_ALLOC_MAXIMUM): Define if
+	LAC requested.
+	(YYCOPY_NEEDED): New cpp macro.
+	(YYCOPY): Define if LAC requested.
+	(yy_lac_stack_realloc): New function implementing stack
+	reallocations.  Use YYMAXDEPTH for maximum stack size given that
+	the stack should never need to grow larger than the main state
+	stack needs to grow without LAC.
+	(YY_LAC_ESTABLISH): Update yy_lac invocation.
+	(yy_lac): Add arguments for exploratory stack memory data
+	recorded in the main parser.  Invoke yy_lac_stack_realloc when
+	reallocation is necessary.
+	(yysyntax_error): Add the same new arguments and pass them to
+	yy_lac.
+	(yypstate_delete): Free yyes if necessary.
+	(yyesa, yyes, yyes_capacity): #define these to yypstate members
+	in the case of push parsing.
+	(yyparse, yypush_parse): Initialize yyes and yyes_capacity.
+	Update yysyntax_error invocations.  At yyreturn, free yyes if
+	necessary.
+	* src/parse-gram.y: %define parse.lac full.
+	* tests/input.at (LAC: errors for %define): Extend for
+	parse.lac-memory-trace.
+	* tests/regression.at (LAC: Exploratory stack): Extend to check
+	that stack reallocs happen when expected.
+	(LAC: Memory exhaustion): Update to use YYMAXDEPTH and
+	parse.lac.es-capacity-initial.
+
+2010-12-11  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	parse.lac: implement as %define variable.
+	LAC = lookahead correction.  See discussion at
+	<http://lists.gnu.org/archive/html/bison-patches/2009-09/msg00034.html>.
+	However, one point there must be corrected: because of %nonassoc,
+	LAC is *not* always redundant for lr.type=canonical-lr.
+	* data/yacc.c: Accept values of "none" (default) or "full" for
+	parse.lac.  Accept %define parse.lac.es-capacity to specify
+	capacity of LAC's temporary exploratory stack.  It defaults to 20
+	and, for now, will not grow dynamically.
+	(b4_lac_flag, b4_lac_if): New m4 macros.  Evaluate as true for
+	parse.lac!=none.
+	(YYBACKUP): Invoke YY_LAC_DISCARD.
+	(YY_LAC_ESTABLISH, YY_LAC_DISCARD): New cpp macros that invoke
+	yy_lac and track when it needs to be invoked
+	(yy_lac): New function that, given the current stack, determines
+	whether a token can eventually be shifted.  Return status mimics
+	yyparse return status.
+	(yysyntax_error): Change yystate argument to yyssp so stack top
+	can be passed to yy_lac.  If LAC is requested, build expected
+	token list by invoking yy_lac for every token instead of just
+	checking the current state for lookaheads.  Return 2 if yy_lac
+	exhausts memory.
+	(yyparse, yypush_parse): Use local variable yy_lac_established and
+	cpp macros YY_LAC_ESTABLISH and YY_LAC_DISCARD to implement LAC.
+	Update yysyntax_error invocation.  Add yyexhaustedlab code if LAC
+	is requested.
+	* tests/conflicts.at (%nonassoc and eof): Extend to check the
+	effect of each of -Dlr.type=canonical-lr and -Dparse.lac=full.
+	(%error-verbose and consistent errors): Likewise.
+	(LAC: %nonassoc requires splitting canonical LR states): New test
+	group demonstrating how LAC can fix canonical LR.
+	* tests/input.at (LAC: Errors for %define): New test group.
+	* tests/regression.at (LAC: Exploratory stack): New test group.
+	(LAC: Memory exhaustion): New test group.
+
+2010-11-21  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	build: use gnulib's new bootstrap_sync option.
+	Now, whenever we update bison's copy of gnulib, bootstrap will
+	update itself the next time it's run.
+	* bootstrap: Copy from latest gnulib for bootstrap_sync support.
+	* bootstrap.conf (bootstrap_sync): Set to true.
+	* gnulib: Update to latest so bootstrap is in sync now.
+
+2010-11-07  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	yysyntax_error: adjust prior fixes for branch-2.5's lalr1.cc.
+	On master, there is no yychar in lalr1.cc, but there is on
+	branch-2.5, and the prior cherry-pick of "Fix handling of yychar
+	manipulation in user semantic actions" wasn't adjusted for that
+	difference.
+	* data/lalr1.cc (yy::parser::parse): Translate yychar before
+	every use of yytoken, and add comments explaining this approach.
+	* tests/conflicts.at (%error-verbose and consistent errors):
+	Extend to test yychar manipulation with lalr1.cc.
+
+2010-11-07  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	yysyntax_error: fix for consistent error with lookahead.
+	* NEWS (2.5): Document.
+	* data/yacc.c (yysyntax_error): In a verbose syntax error
+	message while in a consistent state with a default action (which
+	must be an error action given that yysyntax_error is being
+	invoked), continue to drop the expected token list, but don't
+	drop the unexpected token unless there actually is no lookahead.
+	Moreover, handle that internally instead of returning 1 to tell
+	the caller to do it.  With that meaning of 1 gone, renumber
+	return codes more usefully.
+	(yyparse, yypush_parse): Update yysyntax_error usage.  Most
+	importantly, set yytoken to YYEMPTY when there's no lookahead.
+	* data/glr.c (yyreportSyntaxError): As in yacc.c, don't drop the
+	unexpected token unless there actually is no lookahead.
+	* data/lalr1.cc (yy::parser::parse): If there's no lookahead,
+	set yytoken to yyempty_ before invoking yysyntax_error_.
+	(yy::parser::yysyntax_error_): Again, don't drop the unexpected
+	token unless there actually is no lookahead.
+	* data/lalr1.java (YYParser::parse): If there's no lookahead,
+	set yytoken to yyempty_ before invoking yysyntax_error.
+	(YYParser::yysyntax_error): Again, don't drop the unexpected
+	token unless there actually is no lookahead.
+	* tests/conflicts.at (%error-verbose and consistent
+	errors): Extend test group to further reveal how the previous
+	use of the simple "syntax error" message was too general.  Test
+	yacc.c, glr.c, lalr1.cc, and lalr1.java.  No longer an expected
+	failure.
+	* tests/java.at (AT_JAVA_COMPILE, AT_JAVA_PARSER_CHECK): Move
+	to...
+	* tests/local.at: ... here.
+	(_AT_BISON_OPTION_PUSHDEFS): Push AT_SKEL_JAVA_IF definition.
+	(AT_BISON_OPTION_POPDEFS): Pop it.
+	(AT_FULL_COMPILE): Extend to handle Java.
+
+2010-11-07  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	yysyntax_error: more preparation for readability of next patch.
+	There are no behavioral changes here.
+	* data/glr.c (yyreportSyntaxError): Reorganize.
+	* data/lalr1.cc (yy::parser::yysyntax_error_): Reorganize.
+	* tests/conflicts.at (%error-verbose and consistent errors):
+	Reorganize.
+
+2010-11-07  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	yysyntax_error: prepare for readability of next patches.
+	These are purely whitespace changes that result in ugly code
+	but that make the next couple of patches much easier to read.
+	* data/glr.c (yyreportSyntaxError): Reindent.
+	* data/lalr1.cc (yy::parser::yysyntax_error_): Reindent.
+	* data/lalr1.java (YYParser::yysyntax_error): Reindent.
+	* data/yacc.c (yysyntax_error): Reindent.
+
+2010-10-31  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	yysyntax_error: improve invocation readability.
+	* data/yacc.c (yyparse, yypush_parse): For yysyntax_error
+	invocation, get rid of the while loop, which is misleading
+	because there are really at most two iterations.
+
+2010-10-31  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	* ChangeLog: Correct some errors in previous entries.
+
+2010-10-17  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	maint: re-anchor all .gitignore entries.
+	* bootstrap: Copy from gnulib's latest for the fix to
+	automatically anchor entries it constructs.
+	* gnulib: Update to latest just so it has the same bootstrap.
+	* .gitignore, build-aux/.gitignore, doc/.gitignore:
+	* lib/.gitignore, m4/.gitignore, po/.gitignore:
+	* runtime-po/.gitignore: Re-anchor all entries.
+
+2010-10-08  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Fix portability problem on OpenBSD 4.7.
+
+	Jim Meyering reported this in
+	<http://lists.gnu.org/archive/html/bug-bison/2010-10/msg00007.html>.
+	* data/yacc.c: Use EXIT_SUCCESS as a witness for stdlib.h,
+	not _STDLIB_H.  EXIT_SUCCESS has been defined by the standard
+	for quite some time.
+	* src/parse-gram.c, src/parse-gram.h: Regenerate.
+	* tests/regression.at: Tamper with the renamed witness.
+
+	Adjust to recent changes to gnulib bootstrap.
+
+	* .cvsignore, build-aux/.cvsignore, doc/.cvsignore, etc/.cvsignore:
+	* examples/calc++/.cvsignore, lib/.cvsignore, m4/.cvsignore:
+	* po/.cvsignore, runtime-po/.cvsignore, src/.cvsignore:
+	* tests/.cvsignore: Remove; I don't use CVS to maintain Bison
+	anymore and don't know of anybody else who does.  If someone needs
+	these files, they can resurrect them.
+	* .gitignore, build-aux/.gitignore, doc/.gitignore, lib/.gitignore:
+	* m4/.gitignore, po/.gitignore, runtime-po/.gitignore:
+	Omit leading '/', since bootstrap omits it.
+	Adjust file names to match current contents better.
+	* bootstrap: Sync from gnulib: this contains the new gnulib_mk_hook
+	installed just for us.
+	* bootstrap.conf (excluded_files): Don't exclude codeset.m4,
+	glibc21.m4, inttypes_h.m4, size_max.m4, xsize.m4, as they are now
+	needed somehow.  Don't have time to look into why.
+	(gnulib_modules): Change malloc to malloc-gnu.  Do we really assume
+	the GNU malloc behavior, where malloc (0) != NULL unless we're
+	out of storage?  If not, we can omit malloc-gnu; but for now I left
+	it in to be safe.
+	(vc_ignore): Remove.
+	* README-hacking: Renamed from HACKING, since gnulib bootstrap now
+	uses that convention.
+
+2010-08-05  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	Version 2.4.3.
+	* NEWS (2.4.3): Set date.
+
+2010-08-04  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	maint: add gettext version to release announcements.
+	Suggested by Paul Hilfinger at
+	<http://lists.gnu.org/archive/html/bison-patches/2010-07/msg00019.html>
+	<http://lists.gnu.org/archive/html/bison-patches/2010-08/msg00002.html>.
+	* cfg.mk (bootstrap-tools): Add gettext.
+
+2010-08-04  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	doc: fix -W and %expect documentation some.
+	* NEWS (2.4.3): Mention that there are documentation fixes.
+	* doc/bison.texinfo (Expect Decl): Make it clear that %expect
+	turns conflicts into errors not warnings.
+	(Shift/Reduce): Likewise.
+	(Bison Options): Don't mention -Wsyntax.  It doesn't exist.
+
+2010-08-01  Joel E. Denny  <joeldenny@joeldenny.org>
+
+	-Werror: fix for rules useless in parser after conflicts.
+	* NEWS (2.4.3): Document fix.
+	* src/complain.c (error_message): Extend to handle incomplete
+	error messages so warn and warn_at can be used in more cases.
+	* src/gram.c (grammar_rules_useless_report): Use warn_at so that
+	-Werror is always obeyed.
+	* src/reduce.c (reduce_print): Use warn so that the "warnings
+	being treated as errors" message is printed consistently before
+	the first warning message.  This makes testing easier.
+	* tests/local.at (AT_BISON_WERROR_MSG): New macro.
+	(AT_BISON_CHECK_NO_XML): Extend to check -Werror and
+	--warnings=error when warnings appear in bison's stderr.
+
+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>
+
+	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.
+
+2010-06-17  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
+
+2010-06-17  Paul Eggert  <eggert@cs.ucla.edu>
+
+	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/location.cc:
+	* 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/subpipe.c, djgpp/subpipe.h:
+	* djgpp/testsuite.sed, doc/bison.texinfo:
+	* doc/refcard.tex, etc/README, etc/bench.pl.in:
+	* examples/calc++/Makefile.am, examples/extexi:
+	* lib/abitset.c, lib/abitset.h:
+	* lib/bbitset.h, lib/bitset.c, lib/bitset.h:
+	* lib/bitset_stats.c, lib/bitset_stats.h, lib/bitsetv-print.c:
+	* lib/bitsetv-print.h, lib/bitsetv.c, lib/bitsetv.h:
+	* lib/ebitset.c, lib/ebitset.h, lib/get-errno.c:
+	* lib/get-errno.h, lib/lbitset.c, lib/lbitset.h:
+	* lib/libiberty.h, lib/main.c, lib/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/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/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:
+	* data/Makefile.am, data/location.cc, doc/Makefile.am, src/Makefile.am:
+	* tests/Makefile.am, lib/Makefile.am, examples/Makefile.am:
+	* etc/Makefile.am:
+	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.
+
+2010-05-07  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.
+
+2010-05-10  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.
+
+2010-05-04  Akim Demaille  <demaille@gostai.com>
+
+	lalr1.cc: don't generate location.hh when location_type is defined
+	* data/bison.m4 (b4_percent_define_use): New.
+	(b4_percent_define_get): Use it.
+	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.
+	* data/glr.cc: Likewise.
+
+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.
+
+2010-05-04  Akim Demaille  <demaille@gostai.com>
+
+	tests: enhance AT_SYNCLINES_COMPILE.
+	* tests/synclines.at (AT_TEST_SYNCLINE): Move GCC 4.5 protection
+	into...
+	(AT_SYNCLINES_COMPILE): here.
+	Add more distcc patterns.
+
+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/Makefile.am ($(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.
+	* 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/Makefile.am (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.
+
 2010-01-21  Joel E. Denny  <jdenny@clemson.edu>
 
 	* cfg.mk (gnulib_dir): Assume gnulib is a subdirectory.
@@ -179,7 +1223,7 @@
 
 	YYFAIL: warn about uses and remove from lalr1.java.
 	* NEWS (2.5): Document.
-	* data/lalr1.java (parser::YYStack::YYFAIL): Rename to YYERRLAB,
+	* data/lalr1.java (YYParser::YYFAIL): Rename to YYERRLAB,
 	and make it private.  Update all uses.
 	* src/scan-code.l (SC_RULE_ACTION): Implement warning.
 
@@ -187,7 +1231,7 @@
 
 	YYFAIL: deprecate.
 	* NEWS (2.4.2): Document deprecation and the phase-out plan.
-	* data/lalr1.java (parser::YYStack::YYFAIL): Add comment about
+	* data/lalr1.java (YYParser::YYFAIL): Add comment about
 	deprecation.
 	* data/yacc.c (YYFAIL): Likewise, and suppress warnings about
 	YYFAIL from GCC cpp's -Wunused-macros.
@@ -22872,7 +23916,7 @@
 
 	-----
 
-	Copyright (C) 1987-1988, 1991-2010 Free Software Foundation,
+	Copyright (C) 1987-1988, 1991-2011 Free Software Foundation,
 	Inc.
 
 	Copying and distribution of this file, with or without