Initial check-in introducing experimental GLR parsing. See entry in

[bison.git] / ChangeLog

2002-06-27  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>

	Accumulated changelog for new GLR parsing features.

        * src/conflicts.c (count_total_conflicts): Change name to 
	conflicts_total_count.
	* src/conflicts.h: Ditto.
	* src/output.c (token_actions): Use the new name.
	(output_conflicts): Change conflp => conflict_list_heads, and
	confl => conflict_list for better readability.
	* data/glr.c: Use the new names.
	* NEWS: Add self to GLR announcement.
	
	* src/reader.c (free_merger_functions): Cleanup: XFREE->free.

	* doc/bison.texinfo (GLR Parsers): Make corrections suggested by
	Akim Demaille.

	* data/bison.glr: Change name to glr.c
	* data/glr.c: Renamed from bison.glr.
	* data/Makefile.am: Add glr.c
	
	* src/getargs.c: 
	
	* src/symlist.h:  Add dprec and merger fields to symbol_list_s.
	* src/symlist.c	(symbol_list_new): Initialize dprec and merger fields.
	
	Originally 2002-06-16  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>

	* data/bison.glr: Be sure to restore the
	current #line when returning to the skeleton contents after having
	exposed the input file's #line.

	Originally 2002-06-13  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>

	* data/bison.glr: Bring up to date with changes to bison.simple.

	Originally 2002-06-03  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>

	* data/bison.glr: Correct definitions that use b4_prefix.
	Various reformatting.
	(GLRStack): Make yychar (in YYPURE case) and yytokenp as part of stack.
	(yyreportParseError, yyrecoverParseError, yyprocessOneStack): remove
	yytokenp argument; now part of stack.
	(yychar): Define to behave as documented.
	(yyclearin): Ditto.
	
	Originally 2002-05-14  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>

	* src/reader.h: Add declaration for free_merger_functions.

	* src/reader.c (merge_functions): New variable.
	(get_merge_function): New function.
	(free_merger_functions): New function.
	(readgram): Check for %prec that is not followed by a symbol.
	Handle %dprec and %merge declarations.
	(packgram): Initialize dprec and merger fields in rules array.

	* src/output.c (conflict_tos, conflrow, conflict_table, conflict_list,
	conflict_list_cnt, conflict_list_free): New variables.
	(table_grow): Also grow conflict_table.
	(prepare_rules): Output dprec and merger tables.  
	(conflict_row): New function.
	(action_row): Output conflict lists for GLR parser.  Don't use 
	default reduction in conflicted states for GLR parser so that there
	are spaces for the conflict lists.
	(save_row): Also save conflict information.
	(token_actions): Allocate conflict list.
	(merger_output): New function.
	(pack_vector): Pack conflict table, too.
	(output_conflicts): New function to output yyconflp and yyconfl.
	(output_check): Allocate conflict_tos.
	(output_actions): Output conflict tables, also.
	(output_skeleton): Output b4_mergers definition.
	(prepare): Output b4_max_rhs_length definition.
	Use 'bison.glr' as default skeleton for GLR parsers.

	* src/gram.c (glr_parser): New flag.
	(grammar_free): Call free_merger_functions.

	* src/conflicts.c (count_rr_conflicts): Augment to optionally count
	all pairs of conflicting reductions, rather than just all tokens
	causing conflicts.  Needed to size conflict tables.
	(conflicts_output): Modify call to count_rr_conflicts for new 
	interface.
	(conflicts_print): Ditto.
	(count_total_conflicts): New function.

	* src/reader.h (merger_list): New type.
	(merge_functions): New variable.

	* src/lex.h (tok_dprec, tok_merge): New token types.

	* src/gram.h (rule_s): Add dprec and merger fields.
	(glr_parser): New flag.

	* src/conflicts.h (count_total_conflicts): New function.

	* src/options.c (option_table): Add %dprec, %merge, and %glr-parser.

	* doc/bison.texinfo (Generalized LR Parsing): New section.
	(GLR Parsers): New section.
	(Language and Grammar): Mention GLR parsing.
	(Table of Symbols): Add %dprec, %glr-parser, %merge, GLR
	Correct typo ("tge" -> "the").

	* data/bison.glr: New skeleton for GLR parsing.

	* tests/cxx-gram.at: New tests for GLR parsing.

	* tests/testsuite.at: Include cxx-gram.at.

	* tests/Makefile.am: Add cxx-gram.at.
	
	* src/parse-gram.y:

	* src/scan-gram.l: Add %dprec, %glr-parser, %merge.

	* src/parse-gram.y: Grammar for %dprec, %merge, %glr-parser.
	2002-06-27  Akim Demaille  <akim@epita.fr>

	* src/options.h, src/options.c: Remove.
	* src/getargs.c (short_options, long_options): New.

2002-06-27  Akim Demaille  <akim@epita.fr>

	* data/bison.simple, data/bison.c++: Rename as...
	* data/yacc.c, data/lalr1.cc: these.
	* doc/bison.texinfo (Environment Variables): Remove.

2002-06-25  Raja R Harinath  <harinath@cs.umn.edu>

	* src/getargs.c (report_argmatch): Initialize strtok().

2002-06-20  Akim Demaille  <akim@epita.fr>

	* data/bison.simple (b4_symbol_actions): New, replaces...
	(b4_symbol_destructor, b4_symbol_printer): these.
	(yysymprint): Be sure to call YYPRINT only for tokens, and using
	user token numbers.

2002-06-20  Akim Demaille  <akim@epita.fr>

	* data/bison.simple (yydestructor): Rename as...
	(yydestruct): this.

2002-06-20  Akim Demaille  <akim@epita.fr>

	* src/symtab.h, src/symtab.c (symbol_type_set)
	(symbol_destructor_set, symbol_precedence_set): The location is
	the last argument.
	Adjust all callers.

2002-06-20  Akim Demaille  <akim@epita.fr>

	* src/parse-gram.y (YYPRINT, yyprint): Don't mess with the parser
	internals.
	* src/reader.h, src/reader.c (grammar_current_rule_prec_set):
	Takes a location.
	* src/symtab.h, src/symtab.c (symbol_class_set)
	(symbol_user_token_number_set): Likewise.
	Adjust all callers.
	Promote complain_at.
	* tests/input.at (Type Clashes): Adjust.

2002-06-20  Akim Demaille  <akim@epita.fr>

	* data/bison.simple (YYLEX): Fix the declaration when
	%pure-parser.

2002-06-20  Akim Demaille  <akim@epita.fr>

	* data/bison.simple (yysymprint): Don't print the token number,
	just its name.
	* tests/actions.at (Destructors): Rename as...
	(Printers and Destructors): this.
	Also exercise %printer.

2002-06-20  Akim Demaille  <akim@epita.fr>

	* data/bison.simple (YYDSYMPRINT): New.
	Use it to remove many of the #if YYDEBUG/if (yydebug).

2002-06-20  Akim Demaille  <akim@epita.fr>

	* src/symtab.h, src/symtab.c (symbol_t): printer and
	printer_location are new members.
	(symbol_printer_set): New.
	* src/parse-gram.y (PERCENT_PRINTER): New token.
	Handle its associated rule.
	* src/scan-gram.l: Adjust.
	(handle_destructor_at, handle_destructor_dollar): Rename as...
	(handle_symbol_code_at, handle_symbol_code_dollar): these.
	* src/output.c (symbol_printers_output): New.
	(output_skeleton): Call it.
	* data/bison.simple (yysymprint): New.  Cannot be named yyprint
	since there are already many grammar files with a user `yyprint'.
	Replace the calls to YYPRINT to calls to yysymprint.
	* tests/calc.at: Adjust.
	* tests/torture.at (AT_DATA_STACK_TORTURE): Remove YYPRINT: it was
	taking advantage of parser very internal details (stack size!).

2002-06-20  Akim Demaille  <akim@epita.fr>

	* src/scan-gram.l: Complete the scanner with the missing patterns
	to pacify Flex.
	Use `quote' and `symbol_tag_get' where appropriate.

2002-06-19  Akim Demaille  <akim@epita.fr>

	* tests/actions.at (Destructors): Augment to test locations.
	* data/bison.simple (yydestructor): Pass it the current location
	if locations are enabled.
	Prototype only when __STDC__ or C++.
	Change the argument names to move into the yy name space: there is
	user code here.

2002-06-19  Akim Demaille  <akim@epita.fr>

	* data/bison.simple (b4_pure_if): New.
	Use it instead of #ifdef YYPURE.

2002-06-19  Akim Demaille  <akim@epita.fr>

	* data/bison.simple (b4_location_if): New.
	Use it instead of #ifdef YYLSP_NEEDED.

2002-06-19  Akim Demaille  <akim@epita.fr>

	Prepare @$ in %destructor, but currently don't bind it in the
	skeleton, as %location use is not cleaned up yet.

	* src/scan-gram.l (handle_dollar, handle_destructor_at)
	(handle_action_at): New.
	(handle_at, handle_action_dollar, handle_destructor_dollar): Take
	a braced_code_t and a location as additional arguments.
	(handle_destructor_dollar): Instead of requiring `b4_eval', just
	unquote one when outputting `b4_dollar_dollar'.
	Adjust callers.
	* data/bison.simple (b4_eval): Remove.
	(b4_symbol_destructor): Adjust.
	* tests/input.at (Invalid @n): Adjust.

2002-06-19  Zack Weinberg  <zack@codesourcery.com>

	* doc/bison.texinfo: Document ability to have multiple
	prologue sections.

2002-06-18  Akim Demaille  <akim@epita.fr>

	* src/files.c (compute_base_names): When computing the output file
	names from the input file name, strip the directory part.

2002-06-18  Akim Demaille  <akim@epita.fr>

	* data/bison.simple.new: Comment changes.
	Reported by Andreas Schwab.

2002-06-18  Matt Kraai  <kraai@alumni.cmu.edu>

	* data/bison.simple (yyoverflowlab): #ifndef yyoverflow, so that
	there are no `label `yyoverflowlab' defined but not used' warnings
	when yyoverflow is defined.

2002-06-18  Akim Demaille  <akim@epita.fr>

	* src/symtab.h, src/symtab.c (symbol_t): destructor_location is a
	new member.
	(symbol_destructor_set): Adjust.
	* src/output.c (symbol_destructors_output): Output the destructor
	locations.
	Output the symbol name.
	* data/bison.simple (b4_symbol_destructor): Adjust.

2002-06-18  Cris Bailiff  <c.bailiff@awayweb.com>
	and Akim Demaille  <akim@epita.fr>

	* data/bison.simple.new (yyerrlab1): Be sure to pop and destroy
	what's left on the stack when the error recovery hits EOF.
	* tests/actions.at (Destructors): Complete to exercise this case.

2002-06-17  Akim Demaille  <akim@epita.fr>

	* data/m4sugar/m4sugar.m4 (m4_map): Recognize when the list of
	arguments is really empty, not only equal to `[]'.
	* src/symtab.h, src/symtab.c (symbol_t): `destructor' is a new
	member.
	(symbol_destructor_set): New.
	* src/output.c (symbol_destructors_output): New.
	* src/reader.h (brace_code_t, current_braced_code): New.
	* src/scan-gram.l (BRACED_CODE): Use it to branch on...
	(handle_dollar): Rename as...
	(handle_action_dollar): this.
	(handle_destructor_dollar): New.
	* src/parse-gram.y (PERCENT_DESTRUCTOR): New.
	(grammar_declaration): Use it.
	* data/bison.simple (yystos): Is always defined.
	(yydestructor): New.
	* tests/actions.at (Destructors): New.
	* tests/calc.at (_AT_CHECK_CALC_ERROR): Don't rely on egrep.

2002-06-17  Akim Demaille  <akim@epita.fr>

	* src/symlist.h, src/symlist.c (symbol_list_length): New.
	* src/scan-gram.l (handle_dollar, handle_at): Compute the
	rule_length only when needed.
	* src/output.c (actions_output, token_definitions_output): Output
	the full M4 block.
	* src/symtab.c: Don't access directly to the symbol tag, use
	symbol_tag_get.
	* src/parse-gram.y: Use symbol_list_free.

2002-06-17  Akim Demaille  <akim@epita.fr>

	* src/reader.h, src/reader.c (symbol_list, symbol_list_new)
	(symbol_list_prepend, get_type_name): Move to...
	* src/symlist.h, src/symlist.c (symbol_list_t, symbol_list_new)
	(symbol_list_prepend, symbol_list_n_type_name_get): here.
	Adjust all callers.
	(symbol_list_free): New.
	* src/scan-gram.l (handle_dollar): Takes a location.
	* tests/input.at (Invalid $n): Adjust.

2002-06-17  Akim Demaille  <akim@epita.fr>

	* src/reader.h, src/reader.c (symbol_list_new): Export it.
	(symbol_list_prepend): New.
	* src/parse-gram.y (%union): `list' is a new member.
	(symbols.1): New, replaces...
	(terms_to_prec.1, nterms_to_type.1): these.
	* src/symtab.h, src/symtab.c (symbol_type_set, symbol_precedence_set)
	Take a location as additional argument.
	Adjust all callers.

2002-06-15  Akim Demaille  <akim@epita.fr>

	* src/parse-gram.y: Move %token in the declaration section so that
	we don't depend upon CVS Bison.

2002-06-15  Akim Demaille  <akim@epita.fr>

	* src/state.h, src/state.c (state_rule_lookaheads_print): New.
	* src/print.c (print_core): Use it.

2002-06-15  Akim Demaille  <akim@epita.fr>

	* src/conflicts.c (log_resolution): Accept the rule involved in
	the sr conflicts instead of the lookahead number that points to
	that rule.
	(flush_reduce): Accept the current lookahead vector as argument,
	instead of the index in LA.
	(resolve_sr_conflict): Accept the current number of lookahead
	bitset to consider for the STATE, instead of the index in LA.
	(set_conflicts): Adjust.
	* src/lalr.c, src/lalr.h, src/state.h: Comment changes.

2002-06-15  Akim Demaille  <akim@epita.fr>

	* src/state.h (state_t): Replace the `lookaheadsp' member, a
	short, with `lookaheads' (bitsetv), `lookaheads_rule' (rule_t**).
	Adjust all dependencies.
	* src/lalr.c (initialize_lookaheads): Split into...
	(states_lookaheads_count, states_lookaheads_initialize): these.
	(lalr): Adjust.

2002-06-15  Akim Demaille  <akim@epita.fr>

	* src/gram.h, src/gram.c (grammar_rules_partial_print): New, eved
	out of...
	(grammar_rules_print): here.
	* src/reduce.c (reduce_output): Use it.
	* tests/reduce.at (Useless Rules, Reduced Automaton)
	(Underivable Rules): Adjust.

2002-06-15  Akim Demaille  <akim@epita.fr>

	Copy BYacc's nice way to report the grammar.

	* src/gram.h, src/gram.c (grammar_rhs_print, grammar_rules_print):
	New.
	Don't print the rules' location, it is confusing and useless.
	(rule_print): Use grammar_rhs_print.
	* src/print.c (print_grammar): Use grammar_rules_print.

2002-06-15  Akim Demaille  <akim@epita.fr>

	Complete and rationalize `useless thing' warnings.

	* src/symtab.h, src/symtab.c (symbol_tag_get, symbol_tag_get_n)
	(symbol_tag_print): New.
	Use them everywhere in place of accessing directly the tag member.
	* src/gram.h, src/gram.c (rule_print): New.
	Use it where a rule used to be printed `by hand'.
	* src/reduce.c (nonterminals_reduce): Report the use nonterminals.
	(reduce_grammar_tables): Report the useless rules.
	(reduce_print): Useless things are a warning, not an error.
	Report it as such.
	* tests/reduce.at (Useless Nonterminals, Useless Rules):
	(Reduced Automaton, Underivable Rules): Adjust.
	* tests/regression.at (Web2c Report, Web2c Report): Adjust.
	* tests/conflicts.at (Unresolved SR Conflicts)
	(Solved SR Conflicts): Adjust.

2002-06-15  Akim Demaille  <akim@epita.fr>

	Let symbols have a location.

	* src/symtab.h, src/symtab.c (symbol_t): Location is a new member.
	(getsym): Adjust.
	Adjust all callers.
	* src/complain.h, src/complain.c (complain_at, fatal_at, warn_at):
	Use location_t, not int.
	* src/symtab.c (symbol_check_defined): Take advantage of the
	location.
	* tests/regression.at (Invalid inputs): Adjust.

2002-06-15  Akim Demaille  <akim@epita.fr>

	* src/parse-gram.y (YYLLOC_DEFAULT, current_lhs_location): New.
	(input): Don't try to initialize yylloc here, do it in the
	scanner.
	* src/scan-gram.l (YY_USER_INIT): Initialize yylloc.
	* src/gram.h (rule_t): Change line and action_line into location
	and action_location, of location_t type.
	Adjust all dependencies.
	* src/location.h, src/location.c (empty_location): New.
	* src/reader.h, src/reader.c (grammar_start_symbol_set)
	(grammar_symbol_append, grammar_rule_begin, grammar_rule_end)
	(grammar_current_rule_symbol_append)
	(grammar_current_rule_action_append): Expect a location as argument.
	* src/reader.c (grammar_midrule_action): Adjust to attach an
	action's location as dummy symbol location.
	* src/symtab.h, src/symtab.c (startsymbol_location): New.
	* tests/regression.at (Web2c Report, Rule Line Numbers): Adjust
	the line numbers.

2002-06-14  Akim Demaille  <akim@epita.fr>

	Grammar declarations may be found in the grammar section.

	* src/parse-gram.y (rules_or_grammar_declaration): New.
	(declarations): Each declaration may end with a semicolon, not
	just...
	(grammar_declaration): `"%union"'.
	(grammar): Branch to rules_or_grammar_declaration.

2002-06-14  Akim Demaille  <akim@epita.fr>

	* src/main.c (main): Invoke scanner_free.

2002-06-14  Akim Demaille  <akim@epita.fr>

	* src/output.c (m4_invoke): Extracted from...
	(output_skeleton): here.
	Free tempfile.

2002-06-14  Akim Demaille  <akim@epita.fr>

	* src/parse-gram.y (directives, directive, gram)
	(grammar_directives, precedence_directives, precedence_directive):
	Rename as...
	(declarations, declaration, grammar, grammar_declaration)
	(precedence_declaration, precedence_declarator): these.
	(symbol_declaration): New.

2002-06-14  Akim Demaille  <akim@epita.fr>

	* src/files.c (action_obstack): Remove, unused.
	(output_obstack): Remove it, and all its dependencies, as it is no
	longer needed.
	* src/reader.c (epilogue_set): Build the epilogue in the
	muscle_obstack.
	* src/output.h, src/output.c (muscle_obstack): Move to...
	* src/muscle_tab.h, src/muscle_tab.h: here.
	(muscle_init): Initialize muscle_obstack.
	(muscle_free): New.
	* src/main.c (main): Call it.

2002-06-14  Akim Demaille  <akim@epita.fr>

	* src/location.h: New, extracted from...
	* src/reader.h: here.
	* src/Makefile.am (noinst_HEADERS): Merge into
	(bison_SOURCES): this.
	Add location.h.
	* src/parse-gram.y: Use location_t instead of Bison's.
	* src/reader.h, src/reader.c (prologue_augment, epilogue_set):
	Use location_t instead of ints.

2002-06-14  Akim Demaille  <akim@epita.fr>

	* data/bison.simple, data/bison.c++: Be sure to restore the
	current #line when returning to the skeleton contents after having
	exposed the input file's #line.

2002-06-12  Akim Demaille  <akim@epita.fr>

	* src/scan-gram.l (SC_BRACED_CODE): Don't use `<.*>', it is too
	eager.
	* tests/actions.at (Exotic Dollars): New.

2002-06-12  Akim Demaille  <akim@epita.fr>

	* src/scan-gram.l (SC_PROLOGUE): Don't eat characters amongst
	['"/] too eagerly.
	* tests/input.at (Torturing the Scanner): New.

2002-06-11  Akim Demaille  <akim@epita.fr>

	* src/scan-gram.l (YY_OBS_INIT): Remove, replace with...
	[SC_COMMENT,SC_STRING,SC_CHARACTER,SC_BRACED_CODE,SC_PROLOGUE]
	[SC_EPILOGUE]: Output the quadrigraphs only when not in a comment.
	* src/reader.h, src/scan-gram.l (scanner_initialize): this.
	* src/reader.c (reader): Use it.

2002-06-11  Akim Demaille  <akim@epita.fr>

	* src/scan-gram.l (YY_OBS_FINISH): Don't set yylval.
	Adjust all callers.
	(scanner_last_string_free): New.

2002-06-11  Akim Demaille  <akim@epita.fr>

	* src/scan-gram.l (YY_INIT, YY_GROW, YY_FINISH): Rename as...
	(YY_OBS_INIT, YY_OBS_GROW, YY_OBS_FINISH): these.
	(last_string, YY_OBS_FREE): New.
	Use them when returning an ID.

2002-06-11  Akim Demaille  <akim@epita.fr>

	Have Bison grammars parsed by a Bison grammar.

	* src/reader.c, src/reader.h (prologue_augment): New.
	* src/reader.c (copy_definition): Remove.

	* src/reader.h, src/reader.c (gram_start_symbol_set, prologue_augment)
	(grammar_symbol_append, grammar_rule_begin, grammar_midrule_action)
	(grammar_current_rule_prec_set, grammar_current_rule_check)
	(grammar_current_rule_symbol_append)
	(grammar_current_rule_action_append): Export.
	* src/parse-gram.y (symbol_list_new, symbol_list_symbol_append_
	(symbol_list_action_append): Remove.
	Hook the routines from reader.
	* src/scan-gram.l: In INITIAL, characters and strings are tokens.
	* src/system.h (ATTRIBUTE_NORETURN, ATTRIBUTE_UNUSED): Now.

	* src/reader.c (read_declarations): Remove, unused.

	* src/parse-gram.y: Handle the epilogue.
	* src/reader.h, src/reader.c (gram_start_symbol_set): Rename as...
	(grammar_start_symbol_set): this.
	* src/scan-gram.l: Be sure to ``use'' yycontrol to keep GCC quiet.
	* src/reader.c (readgram): Remove, unused.
	(reader): Adjust to insert eoftoken and axiom where appropriate.

	* src/reader.c (copy_dollar): Replace with...
	* src/scan-gram.h (handle_dollar): this.
	* src/parse-gram.y: Remove `%thong'.

	* src/reader.c (copy_at): Replace with...
	* src/scan-gram.h (handle_at): this.

	* src/complain.h, src/complain.c (warn_at, complain_at, fatal_at):
	New.

	* src/scan-gram.l (YY_LINES): Keep lineno synchronized for the
	time being.

	* src/reader.h, src/reader.c (grammar_rule_end): New.

	* src/parse.y (current_type, current_class): New.
	Implement `%nterm', `%token' support.
	Merge `%term' into `%token'.
	(string_as_id): New.
	* src/symtab.h, src/symtab.c (symbol_make_alias): Don't pass the
	type name.

	* src/parse-gram.y: Be sure to handle properly the beginning of
	rules.

	* src/parse-gram.y: Handle %type.
	* src/reader.c (grammar_rule_end): Call grammar_current_rule_check.

	* src/parse-gram.y: More directives support.
	* src/options.c: No longer handle source directives.

	* src/parse-gram.y: Fix %output.

	* src/parse-gram.y: Handle %union.
	Use the prologue locations.
	* src/reader.c (parse_union_decl): Remove.

	* src/reader.h, src/reader.c (epilogue_set): New.
	* src/parse-gram.y: Use it.

	* data/bison.simple, data/bison.c++: b4_stype is now either not
	defined, then default to int, or to the contents of %union,
	without `union' itself.
	Adjust.
	* src/muscle_tab.c (muscle_init): Don't predefine `stype'.

	* src/output.c (actions_output): Don't output braces, as they are
	already handled by the scanner.

	* src/scan-gram.l (SC_CHARACTER): Set the user_token_number of
	characters to themselves.

	* tests/reduce.at (Reduced Automaton): End the grammars with %% so
	that the epilogue has a proper #line.

	* src/parse-gram.y: Handle precedence/associativity.

	* src/symtab.c (symbol_precedence_set): Requires the symbol to be
	a terminal.
	* src/scan-gram.l (SC_BRACED_CODE): Catch strings and characters.
	* tests/calc.at: Do not use `%token "foo"' as it makes not sense
	at all to define terminals that cannot be emitted.

	* src/scan-gram.l: Escape M4 characters.

	* src/scan-gram.l: Working properly with escapes in user
	strings/characters.

	* tests/torture.at (AT_DATA_TRIANGULAR_GRAMMAR)
	(AT_DATA_HORIZONTAL_GRAMMAR): Respect the `%token ID NUM STRING'
	grammar.
	Use more modest sizes, as for the time being the parser does not
	release memory, and therefore the process swallows a huge amount
	of memory.

	* tests/torture.at (AT_DATA_LOOKAHEADS_GRAMMAR): Adjust to the
	stricter %token grammar.

	* src/symtab.h (associativity): Add `undef_assoc'.
	(symbol_precedence_set): Do nothing when passed an undef_assoc.
	* src/symtab.c (symbol_check_alias_consistence): Adjust.

	* tests/regression.at (Invalid %directive): Remove, as it is now
	meaningless.
	(Invalid inputs): Adjust to the new error messages.
	(Token definitions): The new grammar doesn't allow too many
	eccentricities.

	* src/lex.h, src/lex.c: Remove.
	* src/reader.c (lastprec, skip_to_char, read_signed_integer)
	(copy_character, copy_string2, copy_string, copy_identifier)
	(copy_comment, parse_token_decl, parse_type_decl, parse_assoc_decl)
	(parse_muscle_decl, parse_dquoted_param, parse_skel_decl)
	(parse_action): Remove.
	* po/POTFILES.in: Adjust.

2002-06-11  Akim Demaille  <akim@epita.fr>

	* src/reader.c 	(parse_action): Don't store directly into the
	rule's action member: return the action as a string.
	Don't require `rule_length' as an argument: compute it.
	(grammar_current_rule_symbol_append)
	(grammar_current_rule_action_append): New, eved out from
	(readgram): here.
	Remove `action_flag', `rulelength', unused now.

2002-06-11  Akim Demaille  <akim@epita.fr>

	* src/reader.c (grammar_current_rule_prec_set).
	(grammar_current_rule_check): New, eved out from...
	(readgram): here.
	Remove `xaction', `first_rhs': useless.
	* tests/input.at (Type clashes): New.
	* tests/existing.at (GNU Cim Grammar): Adjust.

2002-06-11  Akim Demaille  <akim@epita.fr>

	* src/reader.c (grammar_midrule_action): New, Eved out from
	(readgram): here.

2002-06-11  Akim Demaille  <akim@epita.fr>

	* src/reader.c (grammar_rule_begin, previous_rule, current_rule):
	New.
	(readgram): Use them as replacement of inlined code, crule and
	crule1.

2002-06-11  Akim Demaille  <akim@epita.fr>

	* src/reader.c (grammar_end, grammar_symbol_append): New.
	(readgram): Use them.
	Make the use of `p' as local as possible.

2002-06-10  Akim Demaille  <akim@epita.fr>

	GCJ's parser requires the tokens to be defined before the prologue.

	* data/bison.simple: Output the token definition before the user's
	prologue.
	* tests/regression.at (Braces parsing, Duplicate string)
	(Mixing %token styles): Check the output from bison.
	(Early token definitions): New.

2002-06-10  Akim Demaille  <akim@epita.fr>

	* src/symtab.c (symbol_user_token_number_set): Don't complain when
	assigning twice the same user number to a token, so that we can
	use it in...
	* src/lex.c (lex): here.
	Also use `symbol_class_set' instead of hand written code.
	* src/reader.c (parse_assoc_decl): Likewise.

2002-06-10  Akim Demaille  <akim@epita.fr>

	* src/symtab.c, src/symtab.c (symbol_class_set)
	(symbol_user_token_number_set): New.
	* src/reader.c (parse_token_decl): Use them.
	Use a switch instead of ifs.
	Use a single argument.

2002-06-10  Akim Demaille  <akim@epita.fr>

	Remove `%thong' support as it is undocumented, unused, duplicates
	`%token's job, and creates useless e-mail traffic with people who
	want to know what it is, why it is undocumented, unused, and
	duplicates `%token's job.

	* src/reader.c (parse_thong_decl): Remove.
	* src/options.c (option_table): Remove "thong".
	* src/lex.h (tok_thong): Remove.

2002-06-10  Akim Demaille  <akim@epita.fr>

	* src/symtab.c, src/symtab.c (symbol_type_set)
	(symbol_precedence_set): New.
	* src/reader.c (parse_type_decl, parse_assoc_decl): Use them.
	(value_components_used): Remove, unused.

2002-06-09  Akim Demaille  <akim@epita.fr>

	Move symbols handling code out of the reader.

	* src/reader.h, src/reader.c (errtoken, undeftoken, eoftoken)
	(axiom): Move to...
	* src/symtab.h, src/symtab.c: here.

	* src/gram.c (start_symbol): Remove: use startsymbol->number.
	* src/reader.c (startval): Rename as...
	* src/symtab.h, src/symtab.c (startsymbol): this.
	* src/reader.c: Adjust.

	* src/reader.c (symbol_check_defined, symbol_make_alias)
	(symbol_check_alias_consistence, symbol_pack, symbol_translation)
	(token_translations_init)
	Move to...
	* src/symtab.c: here.
	* src/reader.c (packsymbols): Move to...
	* src/symtab.h, src/symtab.c (symbols_pack): here.
	* src/symtab.h, src/symtab.c (symbol_make_alias): Takes SYMVAL as
	argument.

2002-06-03  Akim Demaille  <akim@epita.fr>

	* src/muscle_tab.c (muscle_insert, muscle_find): Declarations,
	then statements.

2002-06-03  Akim Demaille  <akim@epita.fr>

	* src/muscle_tab.c (muscle_find, muscle_insert): Don't initialize
	structs with non literals.
	* src/scan-skel.l: never-interactive.
	* src/conflicts.c (enum conflict_resolution_e): No trailing
	comma.
	* src/getargs.c (usage): Split long literal strings.
	Reported by Hans Aberg.

2002-05-28  Akim Demaille  <akim@epita.fr>

	* data/bison.c++: Use C++ ostreams.
	(cdebug_): New member.

2002-05-28  Akim Demaille  <akim@epita.fr>

	* src/output.c (output_skeleton): Be sure to allocate enough room
	for `/' _and_ for `\0' in full_skeleton.

2002-05-28  Akim Demaille  <akim@epita.fr>

	* data/bison.c++: Catch up with bison.simple:
	2002-05-24  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>
	and Paul Eggert  <eggert@twinsun.com>: `error' handing.
	2002-05-26  Akim Demaille  <akim@epita.fr>: stos_, token_number_,
	and popping traces.

2002-05-27  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>

	* src/output.c (output_skeleton): Put an explicit path in front of
	the skeleton file name, rather than relying on the -I directory,
	to partially alleviate effects of having a skeleton file lying around
	in the current directory.

2002-05-27  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>

	* src/conflicts.c (log_resolution): Correct typo:
	obstack_printf should be obstack_fgrow1.

2002-05-26  Akim Demaille  <akim@epita.fr>

	* src/state.h (state_t): `solved_conflicts' is a new member.
	* src/LR0.c (new_state): Set it to 0.
	* src/conflicts.h, src/conflicts.c (print_conflicts)
	(free_conflicts, solve_conflicts): Rename as...
	(conflicts_print, conflicts_free, conflicts_solve): these.
	Adjust callers.
	* src/conflicts.c (enum conflict_resolution_e)
	(solved_conflicts_obstack): New, used by...
	(log_resolution): this.
	Adjust to attach the conflict resolution to each state.
	Complete the description with the precedence/associativity
	information.
	(resolve_sr_conflict): Adjust.
	* src/print.c (print_state): Output its solved_conflicts.
	* tests/conflicts.at (Unresolved SR Conflicts)
	(Solved SR Conflicts): Exercise --report=all.

2002-05-26  Akim Demaille  <akim@epita.fr>

	* src/LR0.c, src/derives.c, src/gram.c, src/gram.h, src/lalr.c,
	* src/nullable.c, src/output.c, src/print.c, src/print_graph.c,
	* src/reader.c, src/reduce.c, src/state.h, src/symtab.h
	(token_number_t, item_number_as_token_number)
	(token_number_as_item_number, muscle_insert_token_number_table):
	Rename as...
	(symbol_number_t, item_number_as_symbol_number)
	(symbol_number_as_item_number, muscle_insert_symbol_number_table):
	these, since it is more appropriate.

2002-05-26  Akim Demaille  <akim@epita.fr>

	* tests/calc.at (AT_CHECK_CALC): Adjust: there are now additional
	`Error:' lines.
	* data/bison.simple (yystos) [YYDEBUG]: New.
	(yyparse) [YYDEBUG]: Display the symbols which are popped during
	error recovery.
	* tests/regression.at (Web2c Actions): Adjust: yystos is output now.

2002-05-25  Akim Demaille  <akim@epita.fr>

	* doc/bison.texinfo (Debugging): Split into...
	(Tracing): this new section, its former contents, and...
	(Understanding): this new section.
	* src/getargs.h, src/getargs.c (verbose_flag): Remove, replaced
	by...
	(report_flag): this.
	Adjust all dependencies.
	(report_args, report_types, report_argmatch): New.
	(usage, getargs): Report/support -r, --report.
	* src/options.h
	(struct option_table_struct): Rename as..,
	(struct option_table_s): this.
	Rename the `set_flag' member to `flag' to match with getopt_long's
	struct.
	* src/options.c (option_table): Split verbose into an entry for
	%verbose, and another for --verbose.
	Support --report/-r, so remove -r from the obsolete --raw.
	* src/print.c: Attach full item sets and lookaheads reports to
	report_flag instead of trace_flag.
	* lib/argmatch.h, lib/argmatch.c: New, from Fileutils 4.1.

2002-05-24  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>
	and Paul Eggert  <eggert@twinsun.com>

	* data/bison.simple (yyparse): Correct error handling to conform to
	POSIX and yacc.  Specifically, after syntax error is discovered,
	do not reduce further before shifting the error token.
	Clean up the code a bit by removing the labels yyerrdefault,
	yyerrhandle, yyerrpop.
	* NEWS: Document the above.

2002-05-20  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>

	* data/bison.simple (yyr1): Don't use yy_token_number_type as element
	type; it isn't always big enough, since it doesn't necessarily
	include non-terminals.
	(yytranslate): Expand definition of yy_token_number_type, so that
	the latter can be removed.
	(yy_token_number_type): Remove, only one use.
	* data/bison.c++ (r1_): Parallel change to yyr1 in bison.simple---
	don't use TokenNumberType as element type.

	* tests/regression.at: Modify expected output to agree with change
	to yyr1 and yytranslate.

2002-05-13  Florian Krohm  <florian@edamail.fishkill.ibm.com>

	* src/reader.c (parse_action): Use copy_character instead of
	obstack_1grow.

2002-05-13  Akim Demaille  <akim@epita.fr>

	* tests/regression.at (Token definitions): Prototype yylex and
	yyerror.

2002-05-12  Paul Hilfinger  <Hilfinger@CS.Berkeley.EDU>

	* src/scan-skel.l: Correct off-by-one error in handling of __oline__.
	* data/bison.simple (b4_sint_type, b4_uint_type): Correct to reflect
	32-bit arithmetic.
	* data/bison.c++ (b4_sint_type, b4_uint_type): Ditto.

2002-05-07  Akim Demaille  <akim@epita.fr>

	* tests/synclines.at: Be sure to prototype yylex and yyerror to
	avoid GCC warnings.

2002-05-07  Akim Demaille  <akim@epita.fr>

	Kill GCC warnings.

	* src/reduce.c (nonterminals_reduce): Don't loop over RITEM: loop
	over the RHS of each rule.
	* src/gram.h, src/gram.c (nritems): Is `unsigned int', not int.
	* src/state.h (state_t): Member `nitems' is unsigned short.
	* src/LR0.c (get_state): Adjust.
	* src/reader.c (packgram): Likewise.
	* src/output.c (GENERATE_MUSCLE_INSERT_TABLE): `max' is of type
	`Type'.
	(muscle_insert_int_table): Remove, unused.
	(prepare_rules): Remove `max'.

2002-05-06  Akim Demaille  <akim@epita.fr>

	* src/closure.c (print_firsts): Display of the symbol tags.
	(bitmatrix_print): Move to...
	* lib/bitsetv-print.h, lib/bitsetv-print.c (bitsetv_matrix_dump):
	here.
	* tests/sets.at (Nullable, Broken Closure, Firsts): Adjust.

2002-05-06  Akim Demaille  <akim@epita.fr>

	* src/muscle_tab.c (muscle_m4_output): Must return TRUE for
	hash_do_for_each.

2002-05-06  Akim Demaille  <akim@epita.fr>

	* src/LR0.c (new_state, get_state): Instead of using the global
	`kernel_size' and `kernel_base', have two new arguments:
	`core_size' and `core'.
	Adjust callers.

2002-05-06  Akim Demaille  <akim@epita.fr>

	* src/reader.c (packgram): No longer end `ritem' with a 0
	sentinel: it is not used.

2002-05-05  Akim Demaille  <akim@epita.fr>

	New experimental feature: display the lookaheads in the report and
	graph.

	* src/print (print_core): When --trace-flag, display the rules
	lookaheads.
	* src/print_graph.c (print_core): Likewise.
	Swap the arguments.
	Adjust caller.

2002-05-05  Akim Demaille  <akim@epita.fr>

	* tests/torture.at (Many lookaheads): New test.

2002-05-05  Akim Demaille  <akim@epita.fr>

	* src/output.c (GENERATE_OUTPUT_TABLE): Replace with...
	(GENERATE_MUSCLE_INSERT_TABLE): this.
	(output_int_table, output_unsigned_int_table, output_short_table)
	(output_token_number_table, output_item_number_table): Replace with...
	(muscle_insert_int_table, muscle_insert_unsigned_int_table)
	(muscle_insert_short_table, muscle_insert_token_number_table)
	(muscle_insert_item_number_table): these.
	Adjust all callers.
	(prepare_tokens): Don't free `translations', since...
	* src/reader.h, src/reader.c (grammar_free): do it.
	Move to...
	* src/gram.h, src/gram.c (grammar_free): here.
	* data/bison.simple, data/bison.c++: b4_token_number_max is now
	b4_translate_max.

2002-05-05  Akim Demaille  <akim@epita.fr>

	* src/output.c (output_unsigned_int_table): New.
	(prepare_rules): `i' is unsigned.
	`prhs', `rline', `r2' are unsigned int.
	Rename muscle `rhs_number_max' as `rhs_max'.
	Output muscles `prhs_max', `rline_max', and `r2_max'.
	Free rline and r1.
	* data/bison.simple, data/bison.c++: Adjust to use these muscles
	to compute types instead of constant types.
	* tests/regression.at (Web2c Actions): Adjust.

2002-05-04  Akim Demaille  <akim@epita.fr>

	* src/symtab.h (SALIAS, SUNDEF): Rename as...
	(USER_NUMBER_ALIAS, USER_NUMBER_UNDEFINED): these.
	Adjust dependencies.
	* src/output.c (token_definitions_output): Be sure not to output a
	`#define 'a'' when fed with `%token 'a' "a"'.
	* tests/regression.at (Token definitions): New.

2002-05-03  Paul Eggert  <eggert@twinsun.com>

	* data/bison.simple (b4_token_defines): Also define YYTOKENTYPE
	for K&R C.

2002-05-03  gettextize  <bug-gnu-gettext@gnu.org>

	* Makefile.am (SUBDIRS): Remove intl.
	(EXTRA_DIST): Add config/config.rpath.

2002-05-03  Akim Demaille  <akim@epita.fr>

	* data/bison.simple (m4_if): Don't output empty enums.
	And actually, output valid enum definitions :(.

2002-05-03  Akim Demaille  <akim@epita.fr>

	* configure.bat: Remove, completely obsolete.
	* Makefile.am (EXTRA_DIST): Adjust.
	Don't distribute config.rpath...
	* config/Makefile.am (EXTRA_DIST): Do it.

2002-05-03  Akim Demaille  <akim@epita.fr>

	* configure.in (GETTEXT_VERSION): New.
	Suggested by Bruno Haible for the forthcoming Gettext 0.10.3.

2002-05-03  Akim Demaille  <akim@epita.fr>

	* data/bison.simple (b4_token_enum): New.
	(b4_token_defines): Use it to output tokens both as #define and
	enums.
	Suggested by Paul Eggert.
	* src/output.c (token_definitions_output): Don't output spurious
	white spaces.

2002-05-03  Akim Demaille  <akim@epita.fr>

	* data/m4sugar/m4sugar.m4: Update from CVS Autoconf.

2002-05-02  Robert Anisko  <robert@lrde.epita.fr>

	* data/bison.c++: Adapt expansion of $s and @s to the C++ parser.
	Update the stack class, give a try to deque as the default container.

2002-05-02  Akim Demaille  <akim@epita.fr>

	* data/bison.simple (yyparse): Do not implement @$ = @1.
	(YYLLOC_DEFAULT): Adjust to do it.
	* doc/bison.texinfo (Location Default Action): Fix.

2002-05-02  Akim Demaille  <akim@epita.fr>

	* src/reader.c (parse_braces): Merge into...
	(parse_action): this.

2002-05-02  Akim Demaille  <akim@epita.fr>

	* configure.in (ALL_LINGUAS): Remove.
	* po/LINGUAS, hr.po: New.

2002-05-02  Akim Demaille  <akim@epita.fr>

	Remove the so called hairy (semantic) parsers.

	* src/system.h (EXT_GUARD_C, EXT_STYPE_H): Remove.
	* src/gram.h, src/gram.c (semantic_parser): Remove.
	(rule_t): Remove the guard and guard_line members.
	* src/lex.h (token_t): remove tok_guard.
	* src/options.c (option_table): Remove %guard and %semantic_parser
	support.
	* src/output.c, src/output.h (guards_output): Remove.
	(prepare): Adjust.
	(token_definitions_output): Don't output the `T'
	tokens (???).
	(output_skeleton): Don't output the guards.
	* src/files.c, src/files.c (attrsfile): Remove.
	* src/reader.c (symbol_list): Remove the guard and guard_line
	members.
	Adjust dependencies.
	(parse_guard): Remove.
	* data/bison.hairy: Remove.
	* doc/bison.texinfo (Environment Variables): Remove occurrences of
	BISON_HAIRY.

2002-05-02  Akim Demaille  <akim@epita.fr>

	* src/reader.c (copy_at, copy_dollarm parse_braces, parse_action)
	(parse_guard): Rename the formal argument `stack_offset' as
	`rule_length', which is more readable.
	Adjust callers.
	(copy_at, copy_dollar): Instead of outputting the hard coded
	values of $$, $n and so forth, output invocation to b4_lhs_value,
	b4_lhs_location, b4_rhs_value, and b4_rhs_location.
	Note: this patch partially drops `semantic-parser' support: it
	always does `rule_length - n', where semantic parsers ought to
	always use `-n'.
	* data/bison.simple, data/bison.c++ (b4_lhs_value)
	(b4_lhs_location, b4_rhs_value, and b4_rhs_location: New.

2002-05-02  Akim Demaille  <akim@epita.fr>

	* configure.in (AC_INIT): Bump to 1.49b.
	(AM_INIT_AUTOMAKE): Short invocation.

2002-05-02  Akim Demaille  <akim@epita.fr>

	Version 1.49a.

2002-05-01  Akim Demaille  <akim@epita.fr>

	* src/skeleton.h: Remove.

2002-05-01  Akim Demaille  <akim@epita.fr>

	* src/skeleton.h: Fix the #endif.
	Reported by Magnus Fromreide.

2002-04-26  Paul Eggert  <eggert@twinsun.com>

	* data/bison.simple (YYSTYPE_IS_TRIVIAL, YYLTYPE_IS_TRIVIAL):
	Define if we define YYSTYPE and YYLTYPE, respectively.
	(YYCOPY): Fix [] quoting problem in the non-GCC case.

2002-04-25  Robert Anisko  <robert@lrde.epita.fr>

	* src/scan-skel.l: Postprocess quadrigraphs.

	* src/reader.c (copy_character): New function, used to output
	single characters while replacing `[' and `]' with quadrigraphs, to
	avoid troubles with M4 quotes.
	(copy_comment): Output characters with copy_character.
	(read_additionnal_code): Likewise.
	(copy_string2): Likewise.
	(copy_definition): Likewise.

	* tests/calc.at: Exercise M4 quoting.

2002-04-25  Akim Demaille  <akim@epita.fr>

	* tests/sets.at (AT_EXTRACT_SETS): Sed portability issue: no space
	between `!' and the command.
	Reported by Paul Eggert.

2002-04-24  Robert Anisko  <robert@lrde.epita.fr>

	* tests/calc.at: Exercise prologue splitting.

	* data/bison.simple, data/bison.c++: Use `b4_pre_prologue' and
	`b4_post_prologue' instead of `b4_prologue'.

	* src/output.c (prepare): Add the `pre_prologue' and `post_prologue'
	muscles.
	(output): Free pre_prologue_obstack and post_prologue_obstack.
	* src/files.h, src/files.c (attrs_obstack): Remove.
	(pre_prologue_obstack, post_prologue_obstack): New.
	* src/reader.c (copy_definition): Add a parameter to specify the
	obstack to fill, instead of using attrs_obstack unconditionally.
	(read_declarations): Pass pre_prologue_obstack to copy_definition if
	`%union' has not yet been seen, pass post_prologue_obstack otherwise.

2002-04-23  Paul Eggert  <eggert@twinsun.com>

	* data/bison.simple: Remove unnecessary commentary and white
	space differences from 1_29-branch.
	Depend on YYERROR_VERBOSE, not defined (YYERROR_VERBOSE).

	(union yyalloc, YYSTACK_GAP_MAX, YYSTACK_BYTES, YYCOPY,
	YYSTACK_RELOCATE): Do not define if yyoverflow is defined, or
	if this is a C++ parser and YYSTYPE or YYLTYPE has nontrivial
	constructors or destructors.

	(yyparse) [! defined YYSTACK_RELOCATE]: Do not relocate the stack.

2002-04-23  Akim Demaille  <akim@epita.fr>

	* tests/sets.at (AT_EXTRACT_SETS): Don't use 8 char long sed labels.
	* tests/synclines.at (AT_TEST_SYNCLINE): Be robust to GCC's
	location with columns.
	* tests/conflicts.at (%nonassoc and eof): Don't use `error.h'.
	All reported by Paul Eggert.

2002-04-22  Akim Demaille  <akim@epita.fr>

	* src/reduce.c (dump_grammar): Move to...
	* src/gram.h, src/gram.c (grammar_dump): here.
	Be sure to separate long item numbers.
	Don't read the members of a rule's prec if its nil.

2002-04-22  Akim Demaille  <akim@epita.fr>

	* src/output.c (table_size, table_grow): New.
	(MAXTABLE): Remove, replace uses with table_size.
	(pack_vector): Instead of dying when the table is too big, grow it.

2002-04-22  Akim Demaille  <akim@epita.fr>

	* data/bison.simple (yyr1): Its type is that of a token number.
	* data/bison.c++ (r1_): Likewise.
	* tests/regression.at (Web2c Actions): Adjust.

2002-04-22  Akim Demaille  <akim@epita.fr>

	* src/reader.c (token_translations_init): 256 is now the default
	value for the error token, i.e., it will be assigned another
	number if the user assigned 256 to one of her tokens.
	(reader): Don't force 256 to error.
	* doc/bison.texinfo (Symbols): Adjust.
	* tests/torture.at (AT_DATA_HORIZONTAL_GRAMMAR)
	(AT_DATA_TRIANGULAR_GRAMMAR): Number the tokens as 1, 2, 3
	etc. instead of 10, 20, 30 (which was used to `jump' over error
	(256) and undefined (2)).

2002-04-22  Akim Demaille  <akim@epita.fr>

	Propagate more token_number_t.

	* src/gram.h (token_number_as_item_number)
	(item_number_as_token_number): New.
	* src/output.c (GENERATE_OUTPUT_TABLE): New.
	Use it to create output_item_number_table and
	output_token_number_table.
	* src/LR0.c, src/derives.c, src/gram.c, src/gram.h, src/lalr.c,
	* src/lex.c, src/nullable.c, src/output.c, src/print.c,
	* src/print_graph.c, src/reader.c, src/reduce.c, src/state.h,
	* src/symtab.c, src/symtab.h: Use token_number_t instead of shorts.

2002-04-22  Akim Demaille  <akim@epita.fr>

	* src/output.h, src/output.c (get_lines_number): Remove.

2002-04-19  Akim Demaille  <akim@epita.fr>

	* doc/bison.texinfo (Actions): Make clear that `|' is not the same
	as Lex/Flex'.
	(Debugging): More details about enabling the debugging features.
	(Table of Symbols): Describe $$, $n, @$, and @n.
	Suggested by Tim Josling.

2002-04-19  Akim Demaille  <akim@epita.fr>

	* doc/bison.texinfo: Remove the uses of the obsolete @refill.

2002-04-10  Akim Demaille  <akim@epita.fr>

	* src/system.h: Rely on HAVE_LIMITS_H.
	Suggested by Paul Eggert.

2002-04-09  Akim Demaille  <akim@epita.fr>

	* tests/calc.at (_AT_CHECK_CALC_ERROR): Receive as argument the
	full stderr, and strip it according to the bison options, instead
	of composing the error message from different bits.
	This makes it easier to check for several error messages.
	Adjust all the invocations.
	Add an invocation exercising the error token.
	Add an invocation demonstrating a stupid error message.
	(_AT_DATA_CALC_Y): Follow the GCS: initial column is 1, not 0.
	Adjust the tests.
	Error message are for stderr, not stdout.

2002-04-09  Akim Demaille  <akim@epita.fr>

	* src/gram.h, src/gram.c (error_token_number): Remove, use
	errtoken->number.
	* src/reader.c (reader): Don't specify the user token number (2)
	for $undefined, as it uselessly prevents using it.
	* src/gram.h (token_number_t): Move to...
	* src/symtab.h: here.
	(state_t.number): Is a token_number_t.
	* src/print.c, src/reader.c: Use undeftoken->number instead of
	hard coded 2.
	(Even though this 2 is not the same as above: the number of the
	undeftoken remains being 2, it is its user token number which
	might not be 2).
	* src/output.c (prepare_tokens): Rename the `maxtok' muscle with
	`user_token_number_max'.
	Output `undef_token_number'.
	* data/bison.simple, data/bison.c++: Use them.
	Be sure to map invalid yylex return values to
	`undef_token_number'.  This saves us from gratuitous SEGV.

	* tests/conflicts.at (Solved SR Conflicts)
	(Unresolved SR Conflicts): Adjust.
	* tests/regression.at (Web2c Actions): Adjust.

2002-04-08  Akim Demaille  <akim@epita.fr>

	* data/bison.c++: s/b4_item_number_max/b4_rhs_number_max/.
	Adding #line.
	Remove the duplicate `typedefs'.
	(RhsNumberType): Fix the declaration and various other typos.
	Use __ofile__.
	* data/bison.simple: Use __ofile__.
	* src/scan-skel.l: Handle __ofile__.

2002-04-08  Akim Demaille  <akim@epita.fr>

	* src/gram.h (item_number_t): New, the type of item numbers in
	RITEM.  Note that it must be able to code symbol numbers as
	positive number, and the negation of rule numbers as negative
	numbers.
	Adjust all dependencies (pretty many).
	* src/reduce.c (rule): Remove this `short *' pointer: use
	item_number_t.
	* src/system.h (MINSHORT, MAXSHORT): Remove.
	Include `limits.h'.
	Adjust dependencies to using SHRT_MAX and SHRT_MIN.
	(shortcpy): Remove.
	(MAXTABLE): Move to...
	* src/output.c (MAXTABLE): here.
	(prepare_rules): Use output_int_table to output rhs.
	* data/bison.simple, data/bison.c++: Adjust.
	* tests/torture.at (Big triangle): Move the limit from 254 to
	500.
	* tests/regression.at (Web2c Actions): Ajust.

	Trying with bigger grammars shows various phenomena: at 3000 (28Mb
	of grammar file) bison is killed by my system, at 2000 (12Mb) bison
	passes, but produces negative #line number, once fixed, GCC is
	killed while compiling 14Mb, at 1500 (6.7 Mb of grammar, 8.2Mb of
	C), it passes.
	* src/state.h (state_h): Code input lines on ints, not shorts.

2002-04-08  Akim Demaille  <akim@epita.fr>

	* src/reduce.c (reduce_grammar): First reduce the nonterminals,
	and then the grammar.

2002-04-08  Akim Demaille  <akim@epita.fr>

	* src/system.h: No longer using strndup.

2002-04-07  Akim Demaille  <akim@epita.fr>

	* src/muscle_tab.h (MUSCLE_INSERT_LONG_INT): New.
	* src/output.c (output_table_data): Return the longest number.
	(prepare_tokens): Output `token_number_max').
	* data/bison.simple, data/bison.c++ (b4_sint_type, b4_uint_type):
	New.
	Use them to define yy_token_number_type/TokenNumberType.
	Use this type for yytranslate.
	* tests/torture.at (Big triangle): Push the limit from 124 to
	253.
	* tests/regression.at (Web2c Actions): Adjust.

2002-04-07  Akim Demaille  <akim@epita.fr>

	* tests/torture.at (Big triangle): New.
	(GNU AWK Grammar, GNU Cim Grammar): Move to...
	* tests/existing.at: here.

2002-04-07  Akim Demaille  <akim@epita.fr>

	* src/gram.h, src/gram.c (nitems): Remove, it is an alias of
	nritems.
	Adjust dependencies.

2002-04-07  Akim Demaille  <akim@epita.fr>

	* src/reader.c: Normalize increments to prefix form.

2002-04-07  Akim Demaille  <akim@epita.fr>

	* src/reader.c, symtab.c: Remove debugging code.

2002-04-07  Akim Demaille  <akim@epita.fr>

	Rename all the `bucket's as `symbol_t'.

	* src/gram.c, src/gram.h, src/lex.c, src/lex.h, src/output.c,
	* src/reader.c, src/reader.h, src/reduce.c, src/state.h,
	* src/symtab.c, src/symtab.h (bucket): Rename as...
	(symbol_t): this.
	(symbol_list_new, bucket_check_defined, bucket_make_alias)
	(bucket_check_alias_consistence, bucket_pack, bucket_translation)
	(bucket_new, bucket_free, hash_compare_bucket, hash_bucket)
	(buckets_new, buckets_free, buckets_do): Rename as...
	(symbol_list_new, symbol_check_defined, symbol_make_alias)
	(symbol_check_alias_consistence, symbol_pack, symbol_translation)
	(symbol_new, symbol_free, hash_compare_symbol_t, hash_symbol_t)
	(symbols_new, symbols_free, symbols_do): these.

2002-04-07  Akim Demaille  <akim@epita.fr>

	Use lib/hash for the symbol table.

	* src/gram.c (ntokens): Initialize to 1, to reserve a slot for
	EOF.
	* src/lex.c (lex): Set the `number' member of new terminals.
	* src/reader.c (bucket_check_defined, bucket_make_alias)
	(bucket_check_alias_consistence, bucket_translation): New.
	(reader, grammar_free, readgram, token_translations_init)
	(packsymbols): Adjust.
	(reader): Number the predefined tokens.
	* src/reduce.c (inaccessable_symbols): Just use hard coded numbers
	for predefined tokens.
	* src/symtab.h (bucket): Remove all the hash table related
	members.
	* src/symtab.c (symtab): Replace by...
	(bucket_table): this.
	(bucket_new, bucket_free, hash_compare_bucket, hash_bucket)
	(buckets_new, buckets_do): New.

2002-04-07  Akim Demaille  <akim@epita.fr>

	* src/gram.c (nitems, nrules, nsyms, ntokens, nvars, nritems)
	(start_symbol, max_user_token_number, semantic_parser)
	(error_token_number): Initialize.
	* src/reader.c (grammar, start_flag, startval, typed, lastprec):
	Initialize.
	(reader): Don't.
	(errtoken, eoftoken, undeftoken, axiom): Extern.

2002-04-07  Akim Demaille  <akim@epita.fr>

	* src/gram.h (rule_s): prec and precsym are now pointers
	to the bucket giving the priority/associativity.
	Member `associativity' removed: useless.
	* src/reduce.c, src/conflicts.c: Adjust.

2002-04-07  Akim Demaille  <akim@epita.fr>

	* src/lalr.c, src/LR0.c, src/closure.c, src/gram.c, src/reduce.c:
	Properly escape the symbols' TAG when outputting them.

2002-04-07  Akim Demaille  <akim@epita.fr>

	* src/lalr.h (LA): Is a bitsetv, not bitset*.

2002-04-07  Akim Demaille  <akim@epita.fr>

	* src/lalr.h, src/lalr.c (LAruleno): Replace with...
	(LArule): this, which is an array to rule_t*.
	* src/print.c, src/conflicts.c: Adjust.

2002-04-07  Akim Demaille  <akim@epita.fr>

	* src/gram.h (rule_t): Rename `number' as `user_number'.
	`number' is a new member.
	Adjust dependencies.
	* src/reduce.c (reduce_grammar_tables): Renumber rule_t.number.

2002-04-07  Akim Demaille  <akim@epita.fr>

	As a result of the previous patch, it is no longer needed
	to reorder ritem itself.

	* src/reduce.c (reduce_grammar_tables): Don't sort RITEM.

2002-04-07  Akim Demaille  <akim@epita.fr>

	Be sure never to walk through RITEMS, but use only data related to
	the rules themselves. RITEMS should be banished.

	* src/output.c (output_token_translations): Rename as...
	(prepare_tokens): this.
	In addition to `translate', prepare the muscles `tname' and
	`toknum', which were handled by...
	(output_rule_data): this.
	Remove, and move the remainder of its outputs into...
	(prepare_rules): this new routines, which also merges content from
	(output_gram): this.
	(prepare_rules): Be sure never to walk through RITEMS.
	(output_stos): Rename as...
	(prepare_stos): this.
	(output): Always invoke prepare_states, after all, just don't use it
	in the output if you don't need it.

2002-04-07  Akim Demaille  <akim@epita.fr>

	* src/LR0.c (new_state): Display `nstates' as the name of the
	newly created state.
	Adjust to initialize first_state and last_state if needed.
	Be sure to distinguish the initial from the final state.
	(new_states): Create the itemset of the initial state, and use
	new_state.
	* src/closure.c (closure): Now that the initial state has its
	items properly set, there is no need for a special case when
	creating `ruleset'.

	As a result, now the rule 0, reducing to $axiom, is visible in the
	outputs.  Adjust the test suite.

	* tests/conflicts.at (Solved SR Conflicts)
	(Unresolved SR Conflicts): Adjust.
	* tests/regression.at (Web2c Report, Rule Line Numbers): Idem.
	* tests/conflicts.at (S/R in initial): New.

2002-04-07  Akim Demaille  <akim@epita.fr>

	* src/LR0.c (allocate_itemsets): Don't loop over ritem: loop over
	the RHS of the rules.
	* src/output.c (output_gram): Likewise.

2002-04-07  Akim Demaille  <akim@epita.fr>

	* src/gram.h (rule_t): `lhs' is now a pointer to the symbol's
	bucket.
	Adjust all dependencies.
	* src/reduce.c (nonterminals_reduce): Don't forget to renumber the
	`number' of the buckets too.
	* src/gram.h: Include `symtab.h'.
	(associativity): Move to...
	* src/symtab.h: here.
	No longer include `gram.h'.

2002-04-07  Akim Demaille  <akim@epita.fr>

	* src/gram.h, src/gram.c (rules_rhs_length): New.
	(ritem_longest_rhs): Use it.
	* src/gram.h (rule_t): `number' is a new member.
	* src/reader.c (packgram): Set it.
	* src/reduce.c (reduce_grammar_tables): Move the useless rules at
	the end of `rules', and count them out of `nrules'.
	(reduce_output, dump_grammar): Adjust.
	* src/print.c (print_grammar): It is no longer needed to check for
	the usefulness of a rule, as useless rules are beyond `nrules + 1'.
	* tests/reduce.at (Reduced Automaton): New test.

2002-04-07  Akim Demaille  <akim@epita.fr>

	* src/reduce.c (inaccessable_symbols): Fix a buglet: because of a
	lacking `+ 1' to nrules, Bison reported as useless a token if it
	was used solely to set the precedence of the last rule...

2002-04-07  Akim Demaille  <akim@epita.fr>

	* data/bison.c++, data/bison.simple: Don't output the current file
	name in #line, to avoid useless diffs between two identical
	outputs under different names.

2002-04-07  Akim Demaille  <akim@epita.fr>

	* src/closure.c, src/print.c, src/reader.c, src/reduce.c:
	Normalize loops to using `< nrules + 1', not `<= nrules'.

2002-04-07  Akim Demaille  <akim@epita.fr>

	* TODO: Update.

2002-04-07  Akim Demaille  <akim@epita.fr>

	* src/output.c, src/reader.c, src/symtab.c, src/symtab.h: Rename
	bucket.value as bucket.number.

2002-04-07  Akim Demaille  <akim@epita.fr>

	* src/closure.c, src/derives.c, src/gram.h, src/lalr.c,
	* src/nullable.c, src/output.c, src/print.c, src/print_graph.c,
	* src/reader.c, src/reduce.c: Let rule_t.rhs point directly to the
	RHS, instead of being an index in RITEMS.

2002-04-04  Paul Eggert  <eggert@twinsun.com>

	* doc/bison.texinfo: Update copyright date.
	(Rpcalc Lexer, Symbols, Token Decl): Don't assume ASCII.
	(Symbols): Warn about running Bison in one character set,
	but compiling and/or running in an incompatible one.
	Warn about character code 256, too.

2002-04-03  Paul Eggert  <eggert@twinsun.com>

	* src/bison.data (YYSTACK_ALLOC): Depend on whether
	YYERROR_VERBOSE is nonzero, not whether it is defined.

	Merge changes from bison-1_29-branch.

2002-03-20  Paul Eggert  <eggert@twinsun.com>

	Merge fixes from Debian bison_1.34-1.diff.

	* configure.in (AC_PREREQ): 2.53.

2002-03-20  Akim Demaille  <akim@epita.fr>

	* src/conflicts.c (log_resolution): Argument `resolution' is const.

2002-03-19  Paul Eggert  <eggert@twinsun.com>

	* src/bison.simple (YYCOPY): New macro.
	(YYSTACK_RELOCATE): Use it.
	Remove Type arg; no longer needed.  All callers changed.
	(yymemcpy): Remove; no longer needed.

	* Makefile.am (AUTOMAKE_OPTIONS): 1.6.
	* doc/Makefile.am (AUTOMAKE_OPTIONS): Remove.

2002-03-19  Akim Demaille  <akim@epita.fr>

	Test and fix the #line outputs.

	* tests/atlocal.at (GCC): New.
	* tests/synclines.at (AT_TEST_SYNCLINE): New macro.
	(Prologue synch line, ,%union synch line, Postprologue synch line)
	(Action synch line, Epilogue synch line): New tests.
	* src/reader.c (parse_union_decl): Define the muscle stype_line.
	* data/bison.simple, data/bison.c++: Use it.

2002-03-19  Akim Demaille  <akim@epita.fr>

	* tests/regression.at (%nonassoc and eof, Unresolved SR Conflicts)
	(Solved SR Conflicts, %expect not enough, %expect right)
	(%expect too much): Move to...
	* tests/conflicts.at: this new file.

2002-03-19  Akim Demaille  <akim@epita.fr>

	* data/m4sugar/m4sugar.m4: Update from CVS Autoconf.
	* data/bison.simple, data/bison.c++: Handle the `#define' part, so
	that we can move to enums for instance.
	* src/output.c (token_definitions_output): Output a list of
	`token-name, token-number' instead of the #define.
	(output_skeleton): Name this list `b4_tokens', not `b4_tokendefs'.

2002-03-14  Akim Demaille  <akim@epita.fr>

	Use Gettext 0.11.1.

2002-03-09  Robert Anisko  <robert@lrde.epita.fr>

	* data/bison.c++: Make the user able to add members to the generated
	parser by subclassing.

2002-03-05  Robert Anisko  <robert@lrde.epita.fr>

	* src/reader.c (read_additionnal_code): `c' should be an integer, not
	a character.
	Reported by Nicolas Tisserand and Nicolas Burrus.

2002-03-04  Robert Anisko  <robert@lrde.epita.fr>

	* src/reader.c: Warn about lacking semi-colons, do not complain.

2002-03-04  Robert Anisko  <robert@lrde.epita.fr>

	* data/bison.c++: Remove a debug line.

2002-03-04  Robert Anisko  <robert@lrde.epita.fr>

	* data/bison.c++: Unmerge value as yylval and value as yyval.  Unmerge
	location as yylloc and location as yyloc.  Use YYLLOC_DEFAULT, and
	provide a default implementation.

2002-03-04  Akim Demaille  <akim@epita.fr>

	* tests/input.at (Invalid $n, Invalid @n): Add the ending `;'.
	* tests/output.at (AT_CHECK_OUTPUT): Likewise.
	* tests/headers.at (AT_TEST_CPP_GUARD_H): Ditto.
	* tests/semantic.at (Parsing Guards): Similarly.
	* src/reader.at (readgram): Complain if the last rule is not ended
	with a semi-colon.

2002-03-04  Akim Demaille  <akim@epita.fr>

	* src/warshall.h, src/warshall.c (bitmatrix_print): Move to...
	* src/closure.c: here.
	(set_firsts): Use bitsetv_reflexive_transitive_closure instead of
	RTC.
	* src/warshall.h, src/warshall.c: Remove.
	* tests/sets.at (Broken Closure): Adjust.

2002-03-04  Akim Demaille  <akim@epita.fr>

	* src/output.c (output_skeleton): tempdir is const.
	bytes_read is unused.

2002-03-04  Akim Demaille  <akim@epita.fr>

	* lib/bbitset.h, lib/bitset.c, lib/bitset.h, lib/bitsetv.c,
	* lib/bitsetv.h, lib/ebitset.c, lib/lbitset.c, lib/sbitset.c:
	Update.
	From Michael Hayes.

2002-03-04  Akim Demaille  <akim@epita.fr>

	* src/closure.c (closure): `r' is unused.

2002-03-04  Akim Demaille  <akim@epita.fr>

	* tests/sets.at (Broken Closure): Add the ending `;'.
	* src/reader.at (readgram): Complain if a rule is not ended with a
	semi-colon.

2002-03-04  Akim Demaille  <akim@epita.fr>

	* src/conflicts.c (set_conflicts): Use bitset_disjoint_p.
	(count_sr_conflicts): Use bitset_count.
	* src/reduce.c (inaccessable_symbols): Ditto.
	(bits_size): Remove.
	* src/warshall.h, src/warshall.c: Convert to bitsetv.

2002-03-04  Akim Demaille  <akim@epita.fr>

	* src/closure.c, src/conflicts.c, src/lalr.c, src/print.c,
	* src/reduce.c: Remove the `bitset_zero's following the
	`bitset_create's, as now it is performed by the latter.

2002-03-04  Akim Demaille  <akim@epita.fr>

	* lib/bitset.c, lib/bitset.h, lib/bitsetv.c, lib/bitsetv.h,
	* lib/ebitset.c, lib/ebitset.h, lib/lbitset.c, lib/lbitset.h,
	* lib/sbitset.c, lib/sbitset.h, lib/bbitset.h: Update from the
	latest sources from Michael.

2002-03-04  Akim Demaille  <akim@epita.fr>

	* src/output.c (output): Don't free the grammar.
	* src/reader.c (grammar_free): New.
	* src/main.c (main): Call it and don't free symtab here.

2002-03-04  Akim Demaille  <akim@epita.fr>

	* src/lex.c (parse_percent_token): Be sure to 0-end token_buffer
	before returning.
	Reported by Benoit Perrot.

2002-03-04  Akim Demaille  <akim@epita.fr>

	Use bitset operations when possible, not loops over bits.

	* src/conflicts.c (set_conflicts, count_sr_conflicts): Use
	bitset_or.
	* src/print.c (print_reductions): Use bitset_and, bitset_andn.
	* src/reduce.c (useless_nonterminals): Formatting changes.
	* src/warshall.c (TC): Use bitset_or.

2002-03-04  Akim Demaille  <akim@epita.fr>

	* src/lalr.h, src/lalr.c (tokensetsize): Remove, unused.
	* src/system.h (BITS_PER_WORD, WORDSIZE, SETBIT, RESETBIT, BITISSET):
	Ditto.

2002-03-04  Akim Demaille  <akim@epita.fr>

	* src/lalr.c (F): Now a bitset*.
	Adjust all dependencies.

2002-03-04  Akim Demaille  <akim@epita.fr>

	* src/conflicts.c (shiftset, lookaheadset): Now bitset.
	Adjust all dependencies.

2002-03-04  Akim Demaille  <akim@epita.fr>

	* src/L0.c, src/LR0.h (nstates): Be size_t.
	Adjust comparisons (signed vs unsigned).
	* src/conflics.c, src/lalr.c, src/lalr.h, src/output.c (LA): Now a
	bitset*.
	Adjust all dependencies.

2002-03-04  Akim Demaille  <akim@epita.fr>

	* src/closure.c (firsts): Now, also a bitset.
	Adjust all dependencies.
	(varsetsize): Remove, now unused.
	* src/warshall.h, src/warshall.c: Now work on arrays of bitsets.

2002-03-04  Akim Demaille  <akim@epita.fr>

	* src/print.c: Convert to use bitset.h, not hand coded iterations
	over ints.

2002-03-04  Akim Demaille  <akim@epita.fr>

	* src/reduce.c: Convert to use bitset.h, not hand coded BSet.

2002-03-04  Akim Demaille  <akim@epita.fr>

	* src/closure.c (ruleset): Be a bitset.
	(rulesetsize): Remove.

2002-03-04  Akim Demaille  <akim@epita.fr>

	* lib/bitset-int.h, lib/bitset.c, lib/bitset.h, lib/bitsetv.c,
	* lib/bitsetv.h, lib/ebitset.c, lib/ebitset.h, lib/lbitset.c,
	* lib/lbitset.h, lib/sbitset.c, lib/sbitset.h: New.
	* src/closure.c (fderives): Be an array of bitsets.

2002-02-28  Robert Anisko  <robert@lrde.epita.fr>

	* data/bison.c++: Merge the two generated headers.  Insert a copyright
	notice in each output file.

2002-02-28  Akim Demaille  <akim@epita.fr>

	* data/bison.c++: Copy the prologue of bison.simple to fetch
	useful M4 definitions, such as b4_header_guard.

2002-02-25  Akim Demaille  <akim@epita.fr>

	* src/getargs.c (version): Give the name of the authors, and use a
	translator friendly scheme for the bgr
	copyright notice.

2002-02-25  Akim Demaille  <akim@epita.fr>

	* src/output.c (header_output): Remove, now handled completely via
	M4.

2002-02-25  Akim Demaille  <akim@epita.fr>

	* m4/m4.m4: New, from CVS Autoconf.
	* configure.in: Invoke it.
	* src/output.c (output_skeleton): Use its result instead of the
	hard coded name.

2002-02-25  Akim Demaille  <akim@epita.fr>

	* lib/tempname.c, lib/mkstemp.c, m4/mkstemp.m4: New, stolen from
	Fileutils 4.1.5.
	* configure.in: Invoke UTILS_FUNC_MKSTEMP.
	* src/output.c (output_skeleton): Use mkstemp to create a real
	temporary file.
	Move the filling of `skeleton' and its muscle to...
	(prepare): here.
	(output): Move the definition of the prologue muscle to...
	(prepare): here.
	* src/system.h (DEFAULT_TMPDIR): New.

2002-02-14  Paul Eggert  <eggert@twinsun.com>

	Remove the support for C++ namespace cleanliness; it was
	causing more problems than it was curing, since it didn't work
	properly on some nonstandard C++ compilers.  This can wait
	for a proper C++ parser.

	* NEWS: Document this.
	* doc/bison.texinfo (Bison Parser, Debugging): Remove special mention
	of C++, as it's treated like C now.
	* src/bison.simple (YYSTD): Remove.
	(YYSIZE_T, YYFPRINTF, YYPARSE_PARAM_ARG, YYPARSE_PARAM_DECL):
	Treat C++ just like Standard C instead of trying to support
	namespace cleanliness.

2002-02-14  Akim Demaille  <akim@epita.fr>

	* tests/regression.at (else): Adjust to Andreas' change.

2002-02-14  Akim Demaille  <akim@epita.fr>

	* lib/Makefile.am (EXTRA_DIST): Ship strnlen.c.

2002-02-13  Andreas Schwab  <schwab@suse.de>

	* src/output.c (output_rule_data): Don't output NULL, it might
	not be defined yet.

2002-02-11  Robert Anisko  <robert@lrde.epita.fr>

	* data/bison.c++ (YYDEBUG, YYERROR_VERBOSE): After the prologue.
	(Copyright notice): Update.

2002-02-11  Akim Demaille  <akim@epita.fr>

	* tests/regression.at (%nonassoc and eof): Don't include
	nonportable headers.

2002-02-08  Robert Anisko  <robert@lrde.epita.fr>

	* data/bison.c++: Correct error recovery.  Make the user able to
	initialize the starting location.

2002-02-07  Akim Demaille  <akim@epita.fr>

	* tests/input.at: New.

2002-02-07  Robert Anisko  <robert@lrde.epita.fr>

	* data/bison.c++: Replace some direct m4 expansions by constants.  Be
	more consistent when naming methods and variables.  Put preprocessor
	directives around tables only needed for debugging.

2002-02-07  Robert Anisko  <robert@lrde.epita.fr>

	* data/bison.c++ (yy::b4_name::print_): New method, replaces yyprint in
	C++ parsers.
	(yy::b4_name::parse): Use print_.

2002-02-07  Robert Anisko  <robert@lrde.epita.fr>

	* data/bison.c++ (yy::b4_name::parse): Error recovery is back.

2002-02-07  Robert Anisko  <robert@lrde.epita.fr>

	* data/bison.c++ (yy::b4_name::error_): New method, replaces yyerror in
	C++ parsers.
	(yy::b4_name::parse): Build verbose error messages, and use error_.

2002-02-06  Robert Anisko  <robert@lrde.epita.fr>

	* data/bison.c++: Fix m4 quoting in comments.

2002-02-06  Robert Anisko  <robert@lrde.epita.fr>

	* data/bison.c++: Adjust the parser code.  Fix some muscles that were
	not expanded by m4.

2002-02-05  Akim Demaille  <akim@epita.fr>

	* data/bison.c++: Adjust to the M4 back end.
	More is certainly needed.

2002-02-05  Akim Demaille  <akim@epita.fr>

	Give a try to M4 as a back end.

	* lib/readpipe.c: New, from wdiff.
	* src/Makefile.am (DEFS): Define PKGDATADIR, not BISON_SIMPLE and
	BISON_HAIRY.
	* src/system.h (BISON_HAIRY, BISON_SIMPLE): Remove the DOS and VMS
	specific values.  Now it is m4 that performs the lookup.
	* src/parse-skel.y: Remove.
	* src/muscle_tab.c, src/muscle_tab.h (muscles_m4_output): New.
	* src/output.c (actions_output, guards_output)
	(token_definitions_output): No longer keeps track of the output
	line number, hence remove the second argument.
	(guards_output): Check against the guard member of a rule, not the
	action member.
	Adjust callers.
	(output_skeleton): Don't look for the skeleton location, let m4 do
	that.
	Create `/tmp/muscles.m4'.  This is temporary, a proper temporary
	file will be used.
	Invoke `m4' on m4sugar.m4, muscles.m4, and the skeleton.
	(prepare): Given that for the time being changesyntax is not
	usable in M4, rename the muscles using `-' to `_'.
	Define `defines_flag', `output_parser_name' and `output_header_name'.
	* src/output.h (actions_output, guards_output)
	(token_definitions_output): Adjust prototypes.
	* src/scan-skel.l: Instead of scanning the skeletons, it now
	processes the output of m4: `__oline__' and `#output'.
	* data/bison.simple: Adjust to be used by M4(sugar).
	* tests/Makefile.am: Use check_SCRIPTS to make sure `bison' is up
	to date.
	* tests/bison.in: Use the secrete envvar `BISON_PKGDATADIR'
	instead of the dead `BISON_SIMPLE' and `BISON_HAIRY'.
	* data/m4sugar/m4sugar.m4, data/m4sugar/version.m4: New,
	shamelessly stolen from CVS Autoconf.

2002-02-05  Akim Demaille  <akim@epita.fr>

	* lib/hash.c, lib/hash.h: Replace with Fileutils 4.1's version.
	* configure.in: Check for the declarations of free and malloc.
	* src/muscle_tab.c: Adjust.

2002-02-05  Akim Demaille  <akim@epita.fr>

	* src/muscle_tab.c (muscle_init): Don't default to NULL muscle
	which have no values.

2002-02-05  Akim Demaille  <akim@epita.fr>

	* src/bison.simple, src/bison.hairy, src/bison.c++: Move to...
	* data/: here.

2002-01-29  Paul Eggert  <eggert@twinsun.com>

	* src/bison.simple (YYSIZE_T): Do not define merely because
	YYSTACK_USE_ALLOCA is nonzero or alloca or _ALLOCA_H are defined.
	On some platforms, <alloca.h> does not declare YYSTD (size_t).

2002-01-27  Akim Demaille  <akim@epita.fr>

	Fix `%nonassoc and eof'.

	* src/state.c (errs_dup): Aaaah!  The failure was due to bytes
	which were not properly copied!  Replace
	memcpy (res->errs, src->errs, src->nerrs);
	with
	memcpy (res->errs, src->errs, src->nerrs * sizeof (src->errs[0]));
	!!!
	* tests/regression.at (%nonassoc and eof): Adjust to newest
	Autotest: `.' is not in the PATH.

2002-01-27  Akim Demaille  <akim@epita.fr>

	* tests/sets.at (AT_EXTRACT_SETS): New.
	(Nullable): Use it.
	(Firsts): New.

2002-01-26  Akim Demaille  <akim@epita.fr>

	* tests/actions.at, tests/calc.at, tests/headers.at,
	* tests/torture.at: Adjust to the newest Autotest which no longer
	forces `.' in the PATH.

2002-01-25  Akim Demaille  <akim@epita.fr>

	* tests/regression.at (%nonassoc and eof): New.
	Suggested by Robert Anisko.

2002-01-24  Akim Demaille  <akim@epita.fr>

	Bison dumps core when trying to complain about broken input files.
	Reported by Cris van Pelt.

	* src/lex.c (parse_percent_token): Be sure to set token_buffer.
	* tests/regression.at (Invalid input: 1, Invalid input: 2): Merge
	into...
	(Invalid inputs): Strengthen: exercise parse_percent_token.

2002-01-24  Robert Anisko  <robert.anisko@epita.fr>

	* src/Makefile.am: Add bison.c++.
	* src/bison.c++: New skeleton.

2002-01-21  Paolo Bonzini <bonzini@gnu.org>

	* po/it.po: New.

2002-01-21  Kees Zeelenberg  <kzlg@users.sourceforge.net>

	* src/files.c (skeleton_find) [MSDOS]: Fix cp definition.

2002-01-20  Marc Autret  <marc@gnu.org>

	* src/files.c (compute_output_file_names): Fix

2002-01-20  Marc Autret  <marc@gnu.org>

	* tests/output.at: New test.
	* src/files.c (compute_base_names): Don't map extensions when
	the YACC flag is set, use defaults.
	Reported by Evgeny Stambulchik.

2002-01-20  Marc Autret  <marc@gnu.org>

	* src/system.h: Need to	define __attribute__ away for non-GCC
	compilers as well (i.e.	the vendor C compiler).
	Suggested by Albert Chin-A-Young.

2002-01-11  Tim Van Holder  <tim.van.holder@pandora.be>

	* lib/hash.h, lib/hash.c: Renamed __P to PARAMS and used the
	canonical definition.
	* src/system.h: Use the canonical definition for PARAMS (avoids
	a conflict with the macro from lib/hash.h).

2002-01-11  Akim Demaille  <akim@epita.fr>

	* configure.in: Use AC_FUNC_STRNLEN.
	Fixes the failures observed on AIX 4.3 by H.Merijn Brand.

2002-01-09  Akim Demaille  <akim@epita.fr>

	* src/files.c, src/files.h (output_infix): New.
	(tab_extension): Remove.
	(compute_base_names): Compute the former, drop the latter.
	* src/output.c (prepare): Insert the muscles `output-infix', and
	`output-suffix'.
	* src/parse-skel.y (string, string.1): New.
	(section.header): Use it.
	(section.yacc): Remove.
	(prefix): Remove too.
	* src/scan-skel.l: Adjust.
	* src/bison.simple, src/bison.hairy: Adjust.

2002-01-09  Akim Demaille  <akim@epita.fr>

	* configure.in (WERROR_CFLAGS): Compute it.
	* src/Makefile.am (CFLAGS): Pass it.
	* tests/atlocal.in (CFLAGS): Idem.
	* src/files.c: Fix a few warnings.
	(get_extension_index): Remove, unused.

2002-01-08  Akim Demaille  <akim@epita.fr>

	* src/getargs.c (AS_FILE_NAME): New.
	(getargs): Use it to convert DOSish file names.
	* src/files.c (base_name): Rename as full_base_name to avoid
	clashes with `base_name ()'.
	(filename_split): New.
	(compute_base_names): N-th rewrite, using filename_split.

2002-01-08  Akim Demaille  <akim@epita.fr>

	* lib/basename.c, lib/dirname.h, lib/dirname.c, lib/memrchr.c:
	New, stolen from the Fileutils 4.1.
	* lib/Makefile.am (libbison_a_SOURCES): Adjust.
	* configure.in: Check for the presence of memrchr, and of its
	prototype.

2002-01-07  Tim Van Holder  <tim.van.holder@pandora.be>

	* lib/hash.h (__P): Added definition for this macro.
	* src/Makefile.am: Add parse-skel.c and scan-skel.c to
	BUILT_SOURCES, to ensure they are generated first.
	* src/parse-skel.y: Use YYERROR_VERBOSE instead of
	%error-verbose to allow bootstrapping with bison 1.30x.

2002-01-06  Akim Demaille  <akim@epita.fr>

	* src/reader.c (parse_braces): Don't fetch the next char, the
	convention is to fetch on entry.
	* tests/torture.at (GNU Cim Grammar): Reintroduce their weird
	'switch' without a following semicolon.
	* tests/regression.at (braces parsing): New.

2002-01-06  Akim Demaille  <akim@epita.fr>

	Bison is dead wrong in its RR conflict reports.

	* tests/torture.at (GNU Cim Grammar): New.
	* src/conflicts.c (count_rr_conflicts): Fix.

2002-01-06  Akim Demaille  <akim@epita.fr>

	Creating package.m4 from configure.ac causes too many problems.

	* tests/Makefile.am (package.m4): Create it by hand,
	AC_CONFIG_TESTDIR no longer does in the most recent CVS Autoconf.

2002-01-06  Akim Demaille  <akim@epita.fr>

	* src/Makefile.am (bison_SOURCES): Add parse-skel.h and
	skeleton.h.

2002-01-04  Paul Eggert  <eggert@twinsun.com>

	* doc/bison.texinfo (Debugging):
	Remove YYSTDERR; it's no longer defined or used.
	Also, s/cstdio.h/cstdio/.

2002-01-03  Akim Demaille  <akim@epita.fr>

	* tests/bison.in, tests/atlocal.in: Adjust to CVS Autoconf.

2002-01-03  Akim Demaille  <akim@epita.fr>

	* src/parse-skel.y (process_skeleton): Don't bind the parser's
	tracing code to --trace, wait for a better --trace option, with
	args.

2002-01-03  Akim Demaille  <akim@epita.fr>

	* src/bison.simple (YYSTDERR): Remove, replace `stderr'.
	The ISO C++ standard is extremely clear about it: stderr is
	considered a macro, not a regular symbol (see table 94 `Header
	<cstdio> synopsis', [lib.c.files] 27.8.2 C Library files).
	Therefore std:: does not apply to it.  It still does with fprintf.
	Also, s/cstdio.h/cstdio/.

2002-01-03  Akim Demaille  <akim@epita.fr>

	* lib/quotearg.c: Use `#include "..."' instead of `#include <...>'
	for non system headers.

2002-01-02  Akim Demaille  <akim@epita.fr>

	Equip the skeleton chain with location tracking, runtime trace,
	pure parser and scanner.

	* src/parse-skel.y: Request a pure parser, locations, and prefix
	renaming.
	(%union): Having several members with the same type does not help
	type mismatches, simplify.
	(YYPRINT, yyprint): New.
	(yyerror): ``Rename'' (there is a #define yyerror skel_error) as...
	(skel_error): this.
	Handle locations.
	* src/scan-skel.l: Adjust to these changes.
	* src/skeleton.h (LOCATION_RESET, LOCATION_LINES, LOCATION_STEP)
	(LOCATION_PRINT, skel_control_t): New.

2001-12-30  Akim Demaille  <akim@epita.fr>

	* src/parse-skel.y: Get rid of the shift/reduce conflict:
	replace `gb' with BLANKS.
	* src/scan-skel.l: Adjust.

2001-12-30  Akim Demaille  <akim@epita.fr>

	* src/system.h: We don't need nor want bcopy.
	Throw away MS-DOS crap: we don't need getpid.
	* configure.in: We don't need strndup.  It was even causing
	problems: because Flex includes the headers *before* us,
	_GNU_SOURCE is not defined by config.h, and therefore strndup was
	not visible.
	* lib/xstrndup.c: New.
	* src/scan-skel.l: Use it.
	Be sure to initialize yylval.muscle member when scanning a MUSCLE.
	* src/parse-skel.y: Use %directives instead of #defines.

2001-12-30  Akim Demaille  <akim@epita.fr>

	* src/skeleton.h: New.
	* src/output.c (output_parser, output_master_parser): Remove, dead
	code.
	* src/output.h (get_lines_number, actions_output, guards_output)
	(token_definitions_output): Prototype them.
	* src/parse-skel.y: Add the license notice.
	Include output.h and skeleton.h.
	(process_skeleton): Returns void, and takes a single parameter.
	* src/scan-skel.l: Add the license notice.
	Include skeleton.h.
	Don't use %option yylineno: it seems that then Flex imagines
	REJECT has been used, and therefore it won't reallocate its
	buffers (which makes no other sense to me than a bug).  It results
	in warnings for `unused: yy_flex_realloc'.

2001-12-30  Robert Anisko  <robert.anisko@epita.fr>

	* src/muscle_tab.h (MUSCLE_INSERT_INT, MUSCLE_INSERT_STRING)
	(MUSCLE_INSERT_PREFIX): ...to there.
	* src/output.c (MUSCLE_INSERT_INT, MUSCLE_INSERT_STRING)
	(MUSCLE_INSERT_PREFIX): Move from here...

	* src/bison.hairy: Add a section directive.  Put braces around muscle
	names.  This parser skeleton is still broken, but Bison should not
	choke on a bad muscle 'syntax'.
	* src/bison.simple: Add a section directive.  Put braces around muscle
	names.

	* src/files.h (strsuffix, stringappend): Add declarations.
	(tab_extension): Add declaration.
	(short_base_name): Add declaration.

	* src/files.c (strsuffix, stringappend): No longer static.  These
	functions are used in the skeleton parser.
	(tab_extension): New.
	(compute_base_names): Use the computations done in this function
	to guess if the generated parsers should have '.tab' in their
	names.
	(short_base_name): No longer static.

	* src/output.c (output_skeleton): New.
	(output): Disable call to output_master_parser, and give a try to
	a new skeleton handling system.
	(guards_output, actions_output): No longer static.
	(token_definitions_output, get_lines_number): No longer static.

	* configure.in: Use AM_PROG_LEX and AC_PROG_YACC.

	* src/Makefile.am (bison_SOURCES): Add scan-skel.l and
	parse-skel.y.

	* src/parse-skel.y: New file.
	* src/scan-skel.l: New file.

2001-12-29  Akim Demaille  <akim@epita.fr>

	%name-prefix is broken.

	* src/files.c (spec_name_prefix): Initialize to NULL, not to "yy".
	Adjust all dependencies.
	* tests/headers.at (export YYLTYPE): Strengthen this test: use
	%name-prefix.

	Renaming yylval but not yylloc is not consistent.  Now we do.

	* src/bison.simple: Prefix yylloc if used.
	* doc/bison.texinfo (Decl Summary): Document that.

2001-12-29  Akim Demaille  <akim@epita.fr>

	* doc/bison.texinfo: Promote `%long-directive' over
	`%long_directive'.
	Remove all references to fixed-output-files, yacc is enough.

2001-12-29  Akim Demaille  <akim@epita.fr>

	* src/bison.simple: Define YYDEBUG and YYERROR_VERBOSE *after* the
	user prologue.  These are defaults.
	* tests/actions.at (Mid-rule actions): Make sure the user can
	define YYDEBUG and YYERROR_VERBOSE.

2001-12-29  Akim Demaille  <akim@epita.fr>

	* src/output.c (header_output): Don't forget to export YYLTYPE and
	yylloc.
	* tests/headers.at (export YYLTYPE): New, make sure it does.
	* tests/regression.at (%union and --defines, Invalid CPP headers):
	Move to...
	* tests/headers.at: here.

2001-12-29  Akim Demaille  <akim@epita.fr>

	* src/gram.h (rule_s): Member `assoc' is of type `associativity'.

2001-12-29  Akim Demaille  <akim@epita.fr>

	* tests/actions.at (Mid-rule actions): Output on a single line
	instead of several.

2001-12-29  Akim Demaille  <akim@epita.fr>

	* doc/bison.texinfo: Formatting changes.

2001-12-29  Akim Demaille  <akim@epita.fr>

	Don't store the token defs in a muscle, just be ready to output it
	on command.  Now possible via `symbols'.  Fixes a memory leak.

	* src/output.c (token_definitions_output): New.
	(output_parser, header_output): Use it.
	* src/reader.c (symbols_save): Remove.

2001-12-29  Akim Demaille  <akim@epita.fr>

	* src/bison.simple: Do not provide a default for YYSTYPE and
	YYLTYPE before the user's prologue.  Otherwise it's hardly... a
	default.

2001-12-29  Akim Demaille  <akim@epita.fr>

	Mid-rule actions are simply... ignored!

	* src/reader.c (readgram): Be sure to attach mid-rule actions to
	the empty-rule associated to the dummy symbol, not to the host
	rule.
	* tests/actions.at (Mid-rule actions): New.

2001-12-29  Akim Demaille  <akim@epita.fr>

	Memory leak.

	* src/reader.c (reader): Free grammar.

2001-12-29  Akim Demaille  <akim@epita.fr>

	Memory leak.

	* src/LR0.c (new_itemsets): Don't allocate `shift_symbol' here,
	since it allocates it for each state, although only one is needed.
	(allocate_storage): Do it here.

2001-12-29  Akim Demaille  <akim@epita.fr>

	* src/options.h, src/options.c (create_long_option_table): Rename
	as...
	(long_option_table_new): this, with a clearer prototype.
	(percent_table): Remove, unused,
	* src/getargs.c (getargs): Adjust.

2001-12-29  Akim Demaille  <akim@epita.fr>

	* src/LR0.c, src/conflicts.c, src/lalr.c, src/lalr.h, src/output.c
	* src/print.c, src/print_graph.c, src/state.h: Rename state_table
	as states.

2001-12-29  Akim Demaille  <akim@epita.fr>

	* src/lalr.c (build_relations): Rename `states' as `states1'.
	Sorry, I don't understand exactly what it is, no better name...

2001-12-29  Akim Demaille  <akim@epita.fr>

	* src/closure.c, src/conflicts.c, src/derives.c, src/gram.c
	* src/gram.h, src/lalr.c, src/nullable.c, src/output.c, src/print.c
	* src/print_graph.c, src/reader.c, src/reduce.c: Rename rule_table
	as rules.

2001-12-29  Akim Demaille  <akim@epita.fr>

	* src/gram.c (rprec, rprecsym, rassoc): Remove, unused since long
	ago.

2001-12-29  Akim Demaille  <akim@epita.fr>

	* src/reader.c, src/reader.h (user_toknums): Remove.
	Adjust all users to use symbols[i]->user_token_number.

2001-12-29  Akim Demaille  <akim@epita.fr>

	* src/gram.c, src/gram.h (sprec, sassoc): Remove.
	Adjust all users to use symbols[i]->prec or ->assoc.

2001-12-29  Akim Demaille  <akim@epita.fr>

	* src/reader.c, src/reader.h (tags): Remove.
	Adjust all users to use symbols[i]->tag.

2001-12-29  Akim Demaille  <akim@epita.fr>

	* src/gram.h, src/gram.c (symbols): New, similar to state_table
	and rule_table.
	* src/reader.c (packsymbols): Fill this table.
	Drop sprec.
	* src/conflicts.c (resolve_sr_conflict): Adjust.
	* src/reduce.c (reduce_grammar): Adjust: just sort symbols, a
	single table.
	Use symbols[i]->tag instead of tags[i].

2001-12-29  Akim Demaille  <akim@epita.fr>

	* tests/calc.at (_AT_DATA_CALC_Y): Also use %union.
	In addition, put a comment in there, to replace...
	* tests/regression.at (%union and C comments): Remove.

2001-12-29  Akim Demaille  <akim@epita.fr>

	* tests/regression.at (Web2c Actions): Blindly move the actual
	output as expected output.  The contents *seem* right to me, but I
	can't pretend reading perfectly parser tables...  Nonetheless, all
	the other tests pass correctly, the table look OK, even though the
	presence of `$axiom' is to be noted: AFAICS it is useless (but
	harmless).

2001-12-29  Akim Demaille  <akim@epita.fr>

	* src/reader.c (readgram): Don't add the rule 0 if there were no
	rules read.  In other words, add it _after_ having performed
	grammar sanity checks.
	Fixes the `tests/regression.at (Invalid input: 1)' Failure.

2001-12-29  Akim Demaille  <akim@epita.fr>

	* tests/regression.at (Web2c Report): Catch up: the rule 0 is now
	visible, and some states have now a different number.

2001-12-29  Akim Demaille  <akim@epita.fr>

	* src/reader.c (readgram): Bind the initial rule's lineno to that
	of the first rule.
	* tests/regression.at (Rule Line Numbers, Unresolved SR Conflicts):
	(Solved SR Conflicts): Adjust rule 0's line number.

2001-12-29  Akim Demaille  <akim@epita.fr>

	Fix the `GAWK Grammar' failure.

	* src/LR0.c (final_state): Initialize to -1 so that we do compute
	the reductions of the first state which was mistakenly confused
	with the final state because precisely final_state was initialized
	to 0.
	* tests/sets.at (Nullable): Adjust: state 0 does have lookaheads,
	now noticed by Bison.
	* tests/regression.at (Rule Line Numbers): Adjust: state 0 does
	have a reduction on $default.

2001-12-29  Akim Demaille  <akim@epita.fr>

	* src/gram.c (ritem_print): Be sure to subtract 1 when displaying
	rule line numbers.
	* src/closure.c (print_closure): Likewise.
	* src/derives.c (print_derives): Likewise.
	* tests/sets.at (Nullable): Adjust: the rule numbers are correct
	now.

2001-12-29  Akim Demaille  <akim@epita.fr>

	* src/lalr.c (lookaheads_print): New.
	(lalr): Call it when --trace-flag.
	* tests/sets.at (Nullable): Adjust: when tracing, the lookaheads
	are dumped.

2001-12-29  Akim Demaille  <akim@epita.fr>

	* src/derives.c (print_derives): Be sure to use `>= 0', not `> 0',
	when walking through ritem, even via rule->rhs.
	* src/reduce.c (dump_grammar, useful_production, reduce_output)
	(useful_production, useless_nonterminals): Likewise.
	(reduce_grammar_tables): Likewise, plus update nritems.
	* src/nullable.c (set_nullable): Likewise.
	* src/lalr.c (build_relations): Likewise.
	* tests/sets.at (Nullable): Adjust.
	Fortunately, now, the $axiom is no longer nullable.

2001-12-29  Akim Demaille  <akim@epita.fr>

	* src/LR0.c (generate_states): Use nritems, not nitems, nor using
	the 0-sentinel.
	* src/gram.c (ritem_longest_rhs): Likewise.
	* src/reduce.c (nonterminals_reduce): Likewise.
	* src/print_graph.c (print_graph): Likewise.
	* src/output.c (output_rule_data): Likewise.
	* src/nullable.c (set_nullable):  Likewise.

2001-12-29  Akim Demaille  <akim@epita.fr>

	* src/output.c: Comment changes.

2001-12-27  Paul Eggert  <eggert@twinsun.com>

	* src/bison.simple (YYSTACK_ALLOC, YYSIZE_T): Remove special
	cases for non-GNU systems like AIX, HP-UX, SGI, Sun, and
	Sparc, as they were causing more porting problems than the
	(minor) performance improvement was worth.

	Also, catch up with 1.31's YYSTD.

2001-12-27  Akim Demaille  <akim@epita.fr>

	* src/output.c (output_gram): Rely on nritems, not the
	0-sentinel.  See below.
	Use -1 as separator, not 0.
	* src/bison.simple (yyparse): Subtract 1 to the rule numbers.
	Rely on -1 as separator in yyrhs, instead of 0.
	* tests/calc.at (AT_CHECK_CALC): Now, the parsers no longer issue
	twice `Now at end of input', therefore there are two lines less to
	expect.

2001-12-27  Akim Demaille  <akim@epita.fr>

	* tests/regression.at (Unresolved SR Conflicts):
	(Solved SR Conflicts, Rule Line Numbers): Adjust to the changes
	below.

2001-12-27  Akim Demaille  <akim@epita.fr>

	* src/LR0.c (new_state): Recognize the final state by the fact it
	is reached by eoftoken.
	(insert_start_shifting_state, insert_eof_shifting_state)
	(insert_accepting_state, augment_automaton): Remove, since now
	these states are automatically computed from the initial state.
	(generate_states): Adjust.
	* src/print.c: When reporting a rule number to the user, substract
	1, so that the axiom rule is rule 0, and the first user rule is 1.
	* src/reduce.c: Likewise.
	* src/print_graph.c (print_core): For the time being, just as for
	the report, depend upon --trace-flags to dump the full set of
	items.
	* src/reader.c (readgram): Once the grammar read, insert the rule
	0: `$axiom: START-SYMBOL $'.
	* tests/set.at: Adjust: rule 0 is now displayed, and since the
	number of the states has changed (the final state is no longer
	necessarily the last), catch up.

2001-12-27  Akim Demaille  <akim@epita.fr>

	Try to make the use of the eoftoken valid.  Given that its value
	is 0 which was also used as a sentinel in ritem, (i) make sure >= 0
	is used instead of > 0 where appropriate, (ii), depend upon nritems
	instead of the 0-sentinel.

	* src/gram.h, src/gram.c (nritems): New.
	Expected to be duplication of nitems, but for the time being...
	* src/reader.c (packgram): Assert nritems and nitems are equal.
	* src/LR0.c (allocate_itemsets, new_itemsets): Adjust.
	* src/closure.c (print_closure, print_fderives): Likewise.
	* src/gram.c (ritem_print): Likewise.
	* src/print.c (print_core, print_grammar): Likewise.
	* src/print_graph.c: Likewise.

2001-12-27  Akim Demaille  <akim@epita.fr>

	* src/main.c (main): If there are complains after grammar
	reductions, then output the report anyway if requested, then die.
	* src/symtab.c (bucket_new): Initialize `value' to -1, not 0.
	* src/reader.c (eoftoken): New.
	(parse_token_decl): If the token being defined has value `0', it
	is the eoftoken.
	(packsymbols): No longer hack `tags' to insert `$' by hand.
	Be sure to preserve the value of the eoftoken.
	(reader): Make sure eoftoken is defined.
	Initialize nsyms to 0: now eoftoken is created just like the others.
	* src/print.c (print_grammar): Don't special case the eof token.
	* src/regression.at: Adjust: `$' has value 0, not -1, which was a
	lie anyway, albeit pleasant.
	* tests/calc.at: Exercise error messages with eoftoken.
	Change the grammar so that empty input is invalid.
	Adjust expectations.
	When yyungeting, be sure to use a valid yylloc: use last_yylloc.

2001-12-27  Akim Demaille  <akim@epita.fr>

	* configure.in: Check the protos of strchr ans strspn.
	Replace strchr if needed.
	* src/system.h: Provide the protos of strchr, strspn and memchr if
	missing.
	* lib/strchr.c: New.
	* src/reader.c (symbols_save): Use strchr.

2001-12-27  Akim Demaille  <akim@epita.fr>

	* src/print.c, src/print_graph.c (escape): New.
	Use it to quote the TAGS outputs.
	* src/print_graph.c (print_state): Now errors are in red, and
	reductions in green.
	Prefer high to wide: output the state number on a line of its own.

2001-12-27  Akim Demaille  <akim@epita.fr>

	* src/state.h, src/state.c (reductions_new): New.
	* src/LR0.c (set_state_table): Let all the states have a
	`reductions', even if reduced to 0.
	(save_reductions): Adjust.
	* src/lalr.c (initialize_LA, initialize_lookaheads): Adjust.
	* src/print.c (print_reductions, print_actions): Adjust.
	* src/output.c (action_row): Adjust.

2001-12-27  Akim Demaille  <akim@epita.fr>

	* src/state.h, src/state.c (errs_new, errs_dup): New.
	* src/LR0.c (set_state_table): Let all the states have an errs,
	even if reduced to 0.
	* src/print.c (print_errs, print_reductions): Adjust.
	* src/output.c (output_actions, action_row): Adjust.
	* src/conflicts.c (resolve_sr_conflict): Adjust.

2001-12-27  Akim Demaille  <akim@epita.fr>

	* src/lalr.c (set_goto_map, initialize_F): Use SHIFT_SYMBOL.

2001-12-27  Akim Demaille  <akim@epita.fr>

	* src/conflicts.c, src/conflicts.h (print_reductions): Move to...
	* src/print.c: here.
	(lookaheadset, shiftset): New, used as additional storage by
	print_reductions.
	(print_results): Adjust.
	(print_shifts, print_gotos, print_errs): New, extracted from...
	(print_actions): here.
	* src/print_graph.c (print_actions): Remove dead code.

2001-12-27  Akim Demaille  <akim@epita.fr>

	* src/reader.c (copy_dollar, copy_at): Better checking of `n' in
	`$n' and `@n'.

2001-12-27  Akim Demaille  <akim@epita.fr>

	* src/lalr.c (add_lookback_edge): Use state_t instead of ints.
	(build_relations): Adjust.

2001-12-27  Akim Demaille  <akim@epita.fr>

	* src/lalr.c (set_goto_map): Remove a wrong but benign loop
	duplication.

2001-12-27  Akim Demaille  <akim@epita.fr>

	* src/reader.c (packgram): Catch nitems overflows.

2001-12-27  Akim Demaille  <akim@epita.fr>

	* src/files.c, src/files.h (guard_obstack): Remove.
	* src/output.c (output): Adjust.
	* src/reader.c (parse_braces): New, factoring...
	(copy_action, copy_guard): these two which are renamed as...
	(parse_action, parse_guard): these.
	As a voluntary consequence, using braces around guards is now
	mandatory.

2001-12-27  Akim Demaille  <akim@epita.fr>

	* src/gram.h (rule_t): `guard' and `guard_line' are new members.
	* src/reader.c (symbol_list): `guard' and `guard_line' are new
	members.
	(symbol_list_new): Adjust.
	(copy_action): action_line is the first line, not the last.
	(copy_guard): Just as for actions, store the `action' only, not
	the switch/case/break flesh.
	Don't parse the user action that might follow the guard, let...
	(readgram): do it, i.e., now, there can be an action after a
	guard.
	In other words the guard is just explicitly optional.
	(packgram): Adjust.
	* src/output.c (guards_output): New.
	(output_parser): Call it when needed.
	(output): Also free the guard and attrs obstacks.
	* src/files.c, src/files.h (obstack_save): Remove.
	(output_files): Remove.
	As a result, if one needs the former `.act' file, using an
	appropriate skeleton which requires actions and guards is now
	required.
	* src/main.c (main): Adjust.
	* tests/semantic.at: New.
	* tests/regression.at: Use `input.y' as input file name.
	Avoid 8+3 problems by requiring input.c when the test needs the
	parser.

2001-12-27  Akim Demaille  <akim@epita.fr>

	* src/reader.c (symbol_list_new): Be sure to initialize all the
	fields.

2001-12-27  Akim Demaille  <akim@epita.fr>

	All the hacks using a final pseudo state are now useless.

	* src/LR0.c (set_state_table): state_table holds exactly nstates.
	* src/lalr.c (nLA): New.
	(initialize_LA, compute_lookaheads, initialize_lookaheads): Use it
	instead of lookaheadsp from the pseudo state (nstate + 1).

2001-12-27  Akim Demaille  <akim@epita.fr>

	* src/output.c (action_row, token_actions): Use a state_t instead
	of a integer, and nlookaheads instead of the following state's
	lookaheadsp.

2001-12-27  Akim Demaille  <akim@epita.fr>

	* src/conflicts.c (log_resolution, flush_shift)
	(resolve_sr_conflict, set_conflicts, solve_conflicts)
	(count_sr_conflicts, count_rr_conflicts, conflicts_output)
	(conflicts_print, print_reductions): Use a state_t instead of an
	integer when referring to a state.
	As much as possible, depend upon nlookaheads, instead of the
	`lookaheadsp' member of the following state (since lookaheads of
	successive states are successive, the difference between state n + 1
	and n served as the number of lookaheads for state n).
	* src/lalr.c (add_lookback_edge): Likewise.
	* src/print.c (print_core, print_actions, print_state)
	(print_results): Likewise.
	* src/print_graph.c (print_core, print_actions, print_state)
	(print_graph): Likewise.
	* src/conflicts.h: Adjust.

2001-12-27  Akim Demaille  <akim@epita.fr>

	* src/bison.hairy: Formatting/comment changes.
	ANSIfy.
	Remove `register' indications.
	Add plenty of `static'.

2001-12-27  Akim Demaille  <akim@epita.fr>

	* src/output.c (prepare): Drop the muscle `ntbase' which
	duplicates ntokens.
	* src/bison.simple: Formatting/comment changes.
	Use YYNTOKENS only, which is documented, but not YYNTBASE, which
	is an undocumented synonym.

2001-12-22  Akim Demaille  <akim@epita.fr>

	* src/output.c (output_table_data): Change the prototype to use
	`int' for array ranges: some invocations do pass an int, not a
	short.
	Reported by Wayne Green.

2001-12-22  Akim Demaille  <akim@epita.fr>

	Some actions of web2c.y are improperly triggered.
	Reported by Mike Castle.

	* src/lalr.c (traverse): s/F (i)[k] = F (j)[k]/F (j)[k] = F (i)[k]/.
	* tests/regression.at (Web2c): Rename as...
	(Web2c Report): this.
	(Web2c Actions): New.

2001-12-22  Akim Demaille  <akim@epita.fr>

	Reductions in web2c.y are improperly reported.
	Reported by Mike Castle.

	* src/conflicts.c (print_reductions): Fix.
	* tests/regression.at (Web2c): New.

2001-12-18  Akim Demaille  <akim@epita.fr>

	Some host fail on `assert (!"foo")', which expands to
	((!"foo") ? (void)0 : __assert("!"foo."", __FILE__, __LINE__))
	Reported by Nelson Beebee.

	* src/output.c, src/vcg.c: Replace `assert (!"it succeeded")' with
	`#define it_succeeded 0' and `assert (it_succeeded)'.

2001-12-17  Marc Autret  <autret_m@epita.fr>

	* src/bison.simple: Don't hard code the skeleton line and filename.
	* src/output.c (output_parser): Rename 'line' as 'output_line'.
	New line counter 'skeleton_line' (skeleton-line muscle).

2001-12-17  Paul Eggert  <eggert@twinsun.com>

	* NEWS, doc/bison.texinfo, doc/bison.1, doc/bison.rnh: Document that
	YYDEBUG must be defined to a nonzero value.

	* src/bison.simple (yytname): Do not assume that the user defines
	YYDEBUG to a properly parenthesized expression.

2001-12-17  Akim Demaille  <akim@epita.fr>

	* src/state.h (state_t): Rename lookaheads as lookaheadsp.
	nlookaheads is a new member.
	Adjust all users.
	* src/lalr.h (nlookaheads): Remove this orphan declaration.
	* src/lalr.c (initialize_lookaheads): Set nlookaheads for each
	state.

2001-12-17  Akim Demaille  <akim@epita.fr>

	* src/files.h, src/files.c (open_files, close_files): Remove.
	* src/main.c (main): Don't open/close files, nor invoke lex_free,
	let...
	* src/reader.c (reader): Do it.

2001-12-17  Akim Demaille  <akim@epita.fr>

	* src/conflicts.c (print_reductions): Formatting changes.

2001-12-17  Akim Demaille  <akim@epita.fr>

	* src/conflicts.c (flush_shift): Also adjust lookaheadset.
	(flush_reduce): New.
	(resolve_sr_conflict): Adjust.

2001-12-17  Akim Demaille  <akim@epita.fr>

	* src/output.c (output_obstack): Be static and rename as...
	(format_obstack): this, to avoid any confusion with files.c's
	output_obstack.
	* src/reader.h (muscle_obstack): Move to...
	* src/output.h: here, since it's defined in output.c.

2001-12-17  Akim Demaille  <akim@epita.fr>

	* src/output.c (action_row, save_column, default_goto)
	(sort_actions, matching_state, pack_vector): Better variable
	locality.

2001-12-17  Akim Demaille  <akim@epita.fr>

	* src/output.c: Various formatting changes.

2001-12-17  Akim Demaille  <akim@epita.fr>

	* src/files.c (output_files): Free the output_obstack.
	* src/main.c (main): Call print and print_graph conditionally.
	* src/print.c (print): Work unconditionally.
	* src/print_graph.c (print_graph): Work unconditionally.
	* src/conflicts.c (log_resolution): Output only if verbose_flag.

2001-12-16  Marc Autret  <autret_m@epita.fr>

	* src/output.c (actions_output): Fix. When we use %no-lines,
	there is one less line per action.

2001-12-16  Marc Autret  <autret_m@epita.fr>

	* src/bison.simple: Remove a useless #line directive.
	s/#line %%line %%skeleton/#line %%line "%%parser-file-name"/'.
	* src/output.c (get_lines_number): New.
	(output_parser): Adjust, now takes care about the lines of a
	output muscles.
	Fix line numbering.
	(actions_output): Computes the number of lines taken by actions.
	(output_master_parser): Insert new skeleton which is the name of
	the output parser file name.

2001-12-15  Marc Autret  <autret_m@epita.fr>

	* src/bison.simple [YYERROR_VERBOSE]: Restore backward compatibility.

2001-12-15  Marc Autret  <autret_m@epita.fr>

	* src/output.c (output_gram): Keep track of the hairy one.

2001-12-15  Akim Demaille  <akim@epita.fr>

	Make `make distcheck' work.

	* lib/Makefile.am (INCLUDES): Add top_srcdir/intl, since hash uses
	system.h which uses libgettext.h.

2001-12-15  Akim Demaille  <akim@epita.fr>

	* src/nullable.c (set_nullable): Useless rules must be skipped,
	otherwise, since we range over their symbols, we might look at a
	nonterminal which no longer ``exists'', i.e., it is not counted in
	`nvars', hence we overflow our arrays.

2001-12-15  Akim Demaille  <akim@epita.fr>

	The header can also be produced directly, without any obstack!
	Yahoo!

	* src/files.c, src/files.h (defines_obstack): Remove.
	(compute_header_macro): Global.
	(defines_obstack_save): Remove.
	* src/reader.c (parse_union_decl): No longer output to
	defines_obstack: its content can be found in the `stype' muscle
	anyway.
	(output_token_translations): Merge into...
	(symbols_output): this.
	Rename as...
	(symbols_save): this.
	(reader): Adjust.
	* src/output.c (header_output): New.
	(output): Call it.

2001-12-15  Akim Demaille  <akim@epita.fr>

	* src/reader.c (parse_union_decl): Instead of handling two obstack
	simultaneously, use one to define the `stype' muscle, and use the
	value of the latter to fill defines_obstack.
	(copy_comment): Remove.
	(copy_comment2): Work for a single obstack.
	Rename as...
	(copy_comment): this.

2001-12-15  Akim Demaille  <akim@epita.fr>

	* src/lex.c, src/lex.h (xgetc): No longer static.
	* src/reader.c (parse_union_decl): Revamp.

2001-12-15  Akim Demaille  <akim@epita.fr>

	Still making progress in separating Bison into (i) input, (ii)
	process, (iii) output: now we can directly output the parser file
	without using table_obstack at all.

	* src/files.c, src/files.h (table_obstack): Bye bye.
	(parser_file_name): New.
	* src/files.c (compute_output_file_names): Compute it.
	* src/output.c (actions_output, output_parser)
	(output_master_parser): To a file instead of an obstack.

2001-12-15  Akim Demaille  <akim@epita.fr>

	Attach actions to rules, instead of pre-outputting them to
	actions_obstack.

	* src/gram.h (rule_t): action and action_line are new members.
	* src/reader.c (symbol_list): Likewise.
	(copy_action): Save the actions within the rule.
	(packgram): Save them in rule_table.
	* src/output.c (actions_output): New.
	(output_parser): Use it on `%%actions'.
	(output_rule_data): Don't free rule_table.
	(output): Do it.
	(prepare): Don't save the `action' muscle.
	* src/bison.simple: s/%%action/%%actions/.

2001-12-15  Akim Demaille  <akim@epita.fr>

	* src/reader.c (copy_action): When --yacc, don't append a `;'
	to the user action: let it fail if lacking.
	Suggested by Arnold Robbins and Tom Tromey.

2001-12-14  Akim Demaille  <akim@epita.fr>

	* src/lex.c (literalchar): Simply return the char you decoded, non
	longer mess around with obstacks and int pointers.
	Adjust all callers.

2001-12-14  Akim Demaille  <akim@epita.fr>

	* src/lex.c (literalchar): Don't escape the special characters,
	just decode them, and keep them as char (before, eol was output as
	the 2 char string `\n' etc.).
	* src/output.c (output_rule_data): Use quotearg to output the
	token strings.

2001-12-13  Paul Eggert  <eggert@twinsun.com>

	* src/bison.simple (YYSIZE_T, YYSTACK_ALLOC, YYSTACK_FREE):
	Do not infringe on the global user namespace when using C++.
	(YYFPRINTF, YYSTDERR): New macros, needed for the above.
	All uses of `fprintf' and `stderr' changed.

	* doc/bison.texinfo: Document YYFPRINTF, YYSTDERR.

2001-12-13  Akim Demaille  <akim@epita.fr>

	The computation of nullable is broken: it doesn't handle empty
	RHS's properly.

	* tests/torture.at (GNU AWK Grammar): New.
	* tests/sets.at (Nullable): New.
	* src/nullable.c (set_nullable): Instead of blindly looping over
	`ritems', loop over the rules, and then over their rhs's.

	Work around Autotest bugs.

	* src/warshall.c (bitmatrix_print): Don't use `+--+' as table
	frame, because Autotest understand lines starting with a `+' as
	traces from the shell.  Then, they are not processed properly.
	Admittedly an Autotest bug, but we don't have time to wait for
	Autotest to catch up.
	* tests/regression.at (Broken Closure): Adjust to the new table
	frames.
	Move to...
	* tests/sets.at: here.

2001-12-13  Akim Demaille  <akim@epita.fr>

	* src/closure.c (closure): Use nrules instead of playing tricks
	with BITS_PER_WORD.

2001-12-13  Akim Demaille  <akim@epita.fr>

	* src/print.c (print_actions): Output the handling of `$' as the
	traces do: shifting the token EOF.  Before EOF was treated as a
	nonterminal.
	* tests/regression.at: Adjust some tests.
	* src/print_graph.c (print_core): Complete the set of items via
	closure.  The next-to-final and final states are still unsatisfying,
	but that's to be addressed elsewhere.
	No longer output the rule numbers, but do output the state number.
	A single loop for the shifts + gotos is enough, but picked a
	distinct color for each.
	(print_graph): Initialize and finalize closure.

2001-12-13  Akim Demaille  <akim@epita.fr>

	* src/reader.c (readgram): Remove dead code, an strip useless
	braces.
	(get_type): Remove, unused.

2001-12-12  Akim Demaille  <akim@epita.fr>

	* src/complain.h, src/complain.c: Remove error_one_per_line, rely
	on that of lib/error.c.

2001-12-12  Akim Demaille  <akim@epita.fr>

	Some hosts don't like `/' in includes.

	* src/system.h: Include libgettext.h without qualifying the path.
	* src/Makefile.am (INCLUDES): Add $(top_srcdir)/intl, remove
	$(top_srcdir).

2001-12-11  Marc Autret  <autret_m@epita.fr>

	* src/output.c (output_parser): Remove useless muscle.

2001-12-11  Marc Autret  <autret_m@epita.fr>

	* src/bison.simple: Remove #line just before %%epilogue. It
	is now handled in ...
	* src/reader.c (read_additionnal_code): Add the output of a
	#line for the epilogue.

2001-12-10  Marc Autret  <autret_m@epita.fr>

	* src/reader.c (copy_definition): Re-use CPP-outed code which
	replace precedent remove.
	* src/bison.simple: Remove #line before %%prologue because
	%%input-line is wrong at this time.

2001-12-10  Marc Autret  <autret_m@epita.fr>

	* src/reader.c (symbols_output): Clean up.
	* src/output.c (output_gram, output): Clean up.

2001-12-10  Akim Demaille  <akim@epita.fr>

	* src/lalr.c (initialize_lookaheads): New.  Extracted from...
	* src/LR0.c (set_state_table): here.
	* src/lalr.c (lalr): Call it.

2001-12-10  Akim Demaille  <akim@epita.fr>

	* src/state.h (shifts): Remove the `number' member: shifts are
	attached to state, hence no longer need to be labelled with a
	state number.

2001-12-10  Akim Demaille  <akim@epita.fr>

	Now that states have a complete set of members, the linked list of
	shifts is useless: just fill directly the state's shifts member.

	* src/state.h (shifts): Remove the `next' member.
	* src/LR0.c (first_state, last_state): Remove.
	Adjust the callers.
	(augment_automaton): Don't look for the shifts that must be added
	a shift on EOF: it is those of the state we looked for!  But now,
	since shifts are attached, it is no longer needed to looking
	merely by its id: its number.

2001-12-10  Akim Demaille  <akim@epita.fr>

	* src/LR0.c (augment_automaton): Better variable locality.
	Remove an impossible branch: if there is a state corresponding to
	the start symbol being shifted, then there is shift for the start
	symbol from the initial state.

2001-12-10  Akim Demaille  <akim@epita.fr>

	* src/LR0.c (augment_automaton): Call `insert_eof_shifting_state'
	only when appropriate: when insert_start_shifting_state' is not
	invoked.
	* tests/regression.at (Rule Line Numbers): Adjust.

2001-12-10  Akim Demaille  <akim@epita.fr>

	* src/LR0.c (augment_automaton): Now that all states have shifts,
	merge the two cases addition shifts to the initial state.

2001-12-10  Akim Demaille  <akim@epita.fr>

	* src/lalr.c (set_state_table): Move to...
	* src/LR0.c: here.
	* src/lalr.c (lalr): Don't call it...
	* src/LR0.c (generate_states): do it.
	* src/LR0.h (first_state): Remove, only the table is used.

2001-12-10  Akim Demaille  <akim@epita.fr>

	* src/LR0.h (first_shift, first_reduction): Remove.
	* src/lalr.c: Don't use first_shift: find shifts through the
	states.

2001-12-10  Akim Demaille  <akim@epita.fr>

	* src/LR0.c: Attach shifts to states as soon as they are
	computed.
	* src/lalr.c (set_state_table): Instead of assigning shifts to
	state, just assert that the mapping was properly done.

2001-12-10  Akim Demaille  <akim@epita.fr>

	* src/LR0.c (insert_start_shift): Rename as...
	(insert_start_shifting_state): this.
	(insert_eof_shifting_state, insert_accepting_state): New.
	(augment_automaton): Adjust.
	Better locality of the variables.
	When looking if the start_symbol is shifted from the initial
	state, using `while (... symbol != start_symbol ...)' sounds
	better than `while (... symbol < start_symbol ...)': If fail
	to see how the order between symbols could be relevant!

2001-12-10  Akim Demaille  <akim@epita.fr>

	* src/getargs.h: Don't declare `spec_name_prefix' and
	`spec_file_prefix', declared by src/files.h.
	* src/files.c, src/files.h: Default for spec_name_prefix is "yy".
	* src/muscle_tab.c (muscle_init): Default prefix to NULL.
	* src/output.c (prepare): Adjust.
	* src/reader.c (symbols_output): Likewise.
	* src/vmsgetargs.c: Vaguely adjust, but who cares?

2001-12-10  Akim Demaille  <akim@epita.fr>

	* src/muscle_tab.c (muscle_init): NULL is a better default than
	`"0"'.

2001-12-10  Akim Demaille  <akim@epita.fr>

	* src/reader.c (reader): Calling symbols_output once is enough.

2001-12-10  Akim Demaille  <akim@epita.fr>

	Now that states have a complete set of members, the linked list of
	reductions is useless: just fill directly the state's reductions
	member.

	* src/state.h (struct reductions): Remove member `number' and
	`next'.
	* src/LR0.c (first_reduction, last_reduction): Remove.
	(save_reductions): Don't link the new reductions, store them in
	this_state.
	* src/lalr.c (set_state_table): No need to attach reductions to
	states, it's already done.
	* src/output.c (output_actions): No longer free the shifts, then
	the reductions, then the states: free all the states and their
	members.

2001-12-10  Akim Demaille  <akim@epita.fr>

	* src/options.c (OPTN, DRTV, BOTH): New.
	(option_table): Use them.

	* src/muscle_tab.c: Don't include xalloc.h and string.h: that's
	the job of system.h.
	* src/options.c: Don't include stdio.h and xalloc.h for the same
	reasons.

2001-12-10  Akim Demaille  <akim@epita.fr>

	* src/output.c (output, prepare): Make sure the values of the
	muscles `action' and `prologue' are 0-terminated.

2001-12-10  Akim Demaille  <akim@epita.fr>

	Clean up GCC warnings.

	* src/reader.c (copy_action): `buf' is not used.
	(parse_skel_decl): Be static.
	* src/muscle_tab.c (mhash1, mhash2, muscle_insert): Preserve `const'.
	* src/options.h (create_long_option_table): Have a real prototype.
	* lib/hash.c, lib/hash.h (hash_insert, hash_insert_at, hash_delete)
	(hash_delete_at): Return const void *.
	Adjust casts to preserve the const.

2001-12-10  Akim Demaille  <akim@epita.fr>

	* configure.in: Require 2.52g.
	M4 is not needed, but AUTOM4TE is.
	* m4/m4.m4: Remove.
	* tests/Makefile.am: Adjust.

2001-12-10  Akim Demaille  <akim@epita.fr>

	One structure for states is enough, even though theoretically
	there are LR(0) states and LALR(1) states.

	* src/lalr.h (state_t): Remove.
	(state_table): Be state_t **, not state_t *.
	* src/state.h (core, CORE_ALLOC): Rename as...
	(state_t, STATE_ALLOC): this.
	Add the LALR(1) members: shifts, reductions, errs.
	* src/LR0.c (state_table): Rename as...
	(state_hash): this, to avoid name clashes with the global
	`state_table'.
	* src/print_graph.c, src/LR0.c, src/LR0.h, src/conflicts.c
	* src/lalr.c, src/lalr.h, src/output.c, src/print.c: Adjust.

2001-12-10  Akim Demaille  <akim@epita.fr>

	Bison dumps core on bash.y.
	Reported by Pascal Bart.

	* src/warshall.c (bitmatrix_print): New.
	(TC): Use it.
	When performing a transitive closure R(i, j) && R(j, k) => R(i,	k),
	j must be the outer loop.
	* tests/regression.at (Broken Closure): New.

2001-12-05  Akim Demaille  <akim@epita.fr>

	* tests/atlocal.in (CPPFLAGS): Do not leave a space between -I and
	its argument.