+2002-11-03 Akim Demaille <akim@epita.fr>
+
+ * data/c.m4 (b4_identification, b4_user_args, b4_parse_param):
+ New.
+ * data/yacc.m4 (b4_pure_args, b4_Pure_args): New.
+ (b4_parse_param): Remove.
+ Use b4_identification.
+ Propagate b4_pure_args where needed to pass them to yyerror.
+ * data/glr.m4 (b4_parse_param): Remove.
+ (b4_user_formals, b4_pure_args, b4_pure_formals, b4_lpure_args)
+ (b4_lpure_formals): New.
+ Use b4_identification.
+ (YY_USER_FORMALS, YY_USER_ARGS): Remove, replaced by
+ b4_user_formals and b4_user_args.
+ (yyexpandGLRStack, yyFail, yyaddDeferredAction, yyglrShiftDefer)
+ (yyreportAmbiguity): When using a pure parser, also need
+ the location, and the parse-params.
+ Adjust callers.
+ (yyuserAction, yyglrShift, yyreportParseError, yyrecoverParseError):
+ When using a pure parser, also need the parse-params.
+ Adjust callers.
+ * tests/calc.at: Test pure (%pure-parser) and absolutely pure
+ (%pure-parser + %parse-param) LALR and GLR parsers.
+ (AT_CHECK_PUSHDEFS, AT_CHECK_POPDEFS): New, define AT_PARAM_IF,
+ AT_LOCATION_IF, AT_PURE_IF, AT_GLR_IF, AAT_PURE_AND_LOC_IF,
+ AT_GLR_OR_PARAM_IF, AT_YYERROR_ARG_LOC_IF, AT_YYERROR_SEES_LOC_IF.
+ (_AT_DATA_CALC_Y): Equip for purity of yyerror.
+ (_AT_CHECK_CALC_ERROR): Use AT_YYERROR_SEES_LOC_IF.
+ * tests/cxx-type.at (_AT_TEST_GLR_CALC): Equip for yyerror purity.
+ * doc/bison.texinfo: Untabify the whole file.
+ (Parser Function): Document %parse-param, deprecate YYPARSE_PARAM.
+ (Pure Calling): Document %lex-param, deprecate YYLEX_PARAM.
+ (Error Reporting): Adjust to these new directives.
+ Document %error-verbose, deprecate YYERROR_VERBOSE.
+
+2002-11-03 Akim Demaille <akim@epita.fr>
+
+ * tests/calc.at: Change all the AT_CHECK_CALC_LALR and
+ AT_CHECK_CALC_GLR invocations to use % directives, instead of
+ command line options.
+ * tests/cxx-type.at: Formatting changes.
+
+2002-11-03 Paul Eggert <eggert@twinsun.com>
+
+ * src/scan-gram.l: Revamp to fix POSIX incompatibilities,
+ to count columns correctly, and to check for invalid inputs.
+
+ Use mbsnwidth to count columns correctly. Account for tabs, too.
+ Include mbswidth.h.
+ (YY_USER_ACTION): Invoke extend_location rather than LOCATION_COLUMNS.
+ (extend_location): New function.
+ (YY_LINES): Remove.
+
+ Handle CRLF in C code rather than in Lex code.
+ (YY_INPUT): New macro.
+ (no_cr_read): New function.
+
+ Scan UCNs, even though we don't fully handle them yet.
+ (convert_ucn_to_byte): New function.
+
+ Handle backslash-newline correctly in C code.
+ (SC_LINE_COMMENT, SC_YACC_COMMENT): New states.
+ (eols, blanks): Remove. YY_USER_ACTION now counts newlines etc.;
+ all uses changed.
+ (tag, splice): New EREs. Do not allow NUL or newline in tags.
+ Use {splice} wherever C allows backslash-newline.
+ YY_STEP after space, newline, vertical-tab.
+ ("/*"): BEGIN SC_YACC_COMMENT, not yy_push_state (SC_COMMENT).
+
+ (letter, id): Don't assume ASCII; e.g., spell out a-z.
+
+ ({int}, handle_action_dollar, handle_action_at): Check for integer
+ overflow.
+
+ (YY_STEP): Omit trailing semicolon, so that it's more like C.
+
+ (<SC_ESCAPED_STRING,SC_ESCAPED_CHARACTER>): Allow \0 and \00
+ as well as \000. Check for UCHAR_MAX, not 255.
+ Allow \x with an arbitrary positive number of digits, as in C.
+ Check for overflow here.
+ Allow \? and UCNs, for compatibility with C.
+
+ (handle_symbol_code_dollar): Use quote_n slot 1 to avoid collision
+ with quote slot used by complain_at.
+
+ * tests/input.at: Add tests for backslash-newline, m4 quotes
+ in symbols, long literals, and funny escapes in strings.
+
+ * configure.ac (jm_PREREQ_MBSWIDTH): Add.
+ * lib/Makefile.am (libbison_a_SOURCES): Add mbswidth.h, mbswidth.c.
+ * lib/mbswidth.h, lib/mbswidth.c: New files, from GNU gettext.
+ * m4/Makefile.am (EXTRA_DIST): Add mbswidth.m4.
+ * m4/mbswidth.m4: New file, from GNU coreutils.
+
+ * doc/bison.texinfo (Grammar Outline): Document // comments.
+ (Symbols): Document that trigraphs have no special meaning in Bison,
+ nor is backslash-newline allowed.
+ (Actions): Document that trigraphs have no special meaning.
+
+ * src/location.h (LOCATION_COLUMNS, LOCATION_LINES): Remove;
+ no longer used.
+
+2002-11-02 Paul Eggert <eggert@twinsun.com>
+
+ * src/reader.c: Don't include quote.h; not needed.
+ (get_merge_function): Reword warning to be consistent with
+ type clash diagnostic in grammar_current_rule_check.
+
+ * lib/quotearg.c (quotearg_buffer_restyled): Fix off-by-two
+ bug in trigraph handling.
+
+ * src/output.c (prepare_symbols): When printing token names,
+ escape "[" as "@<:@" and likewise for "]".
+
+ * src/system.h (errno): Remove declaration, as we are now
+ assuming C89 or better, and C89 guarantees errno.
+
+2002-10-30 Paul Eggert <eggert@twinsun.com>
+
+ * lib/bitset_stats.c (bitset_stats_read, bitset_stats_write):
+ Check for close failures.
+ * src/files.h (xfclose): Return void, not int, since it always
+ returned zero.
+ * src/files.c (xfclose): Likewise. Report I/O error if ferror
+ indicates one.
+ * src/output.c (output_skeleton): Use xfclose rather than fclose
+ and ferror. xfclose now checks ferror.
+
+ * data/glr.c (YYLEFTMOST_STATE): Remove.
+ (yyreportTree): Use a stack-based leftmost state. This avoids
+ our continuing battles with bogus warnings about initializers.
+
2002-10-30 Akim Demaille <akim@epita.fr>
* src/system.h: Don't use #ifdef/#ifndef on HAVE_ values, only
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