NEWS

   1 Bison News
   2 ----------
   3
   4 Changes in version 1.30e:
   5
   6 * %expect
   7   When the number of shift/reduce conflicts is correct, don't issue
   8   any warning.
   9
  10 * The verbose report includes the rule line numbers.
  11
  12 * Rule line numbers are fixed in traces.
  13
  14 Changes in version 1.30d:
  15
  16 * Swedish translation
  17
  18 * Parse errors
  19   Verbose parse error messages from the parsers are better looking.
  20   Before: parse error: unexpected `'/'', expecting `"number"' or `'-'' or `'(''
  21      Now: parse error: unexpected '/', expecting "number" or '-' or '('
  22
  23 * Fixed VCG output
  24   Was broken when strings aliases for symbols were used.
  25
  26 Changes in version 1.30c:
  27
  28 * Fixed a few warnings.
  29
  30 * Some portability issues.
  31
  32 Changes in version 1.30b:
  33
  34 * Fixed parser memory leaks.
  35   When the generated parser was using malloc to extend its stacks, the
  36   previous allocations were not freed.
  37
  38 * Fixed verbose output file.
  39   Some newlines were missing.
  40   Some conflicts in state descriptions were missing.
  41
  42 * Fixed conflict report.
  43   Option -v was needed to get the result.
  44
  45 * %expect
  46   Was not used.
  47   Mismatches are errors, not warnings.
  48
  49 * Fixed incorrect processing of some invalid input.
  50
  51 * Fixed CPP guards: 9foo.h uses BISON_9FOO_H instead of 9FOO_H.
  52
  53 * Fixed some typos in the documentation.
  54
  55 * %token MY_EOF 0 is supported.
  56   Before, MY_EOF was silently renumbered as 257.
  57
  58 * doc/refcard.tex is updated.
  59
  60 * %output, %file-prefix, %name-prefix.
  61   New.
  62
  63 * --output
  64   New, aliasing `--output-file'.
  65 \f
  66 Changes in version 1.30, 2001-10-26:
  67
  68 * `--defines' and `--graph' have now an optionnal argument which is the
  69   output file name. `-d' and `-g' do not change, they do not take any
  70   argument.
  71
  72 * `%source_extension' and `%header_extension' are removed, failed
  73   experiment.
  74
  75 * Portability fixes.
  76 \f
  77 Changes in version 1.29, 2001-09-07:
  78
  79 * The output file does not define const, as this caused problems when used
  80   with common autoconfiguration schemes.  If you still use ancient compilers
  81   that lack const, compile with the equivalent of the C compiler option
  82   `-Dconst='.  autoconf's AC_C_CONST macro provides one way to do this.
  83
  84 * Added `-g' and `--graph'.
  85
  86 * The Bison manual is now distributed under the terms of the GNU FDL.
  87
  88 * The input and the output files has automatically a similar extension.
  89
  90 * Russian translation added.
  91
  92 * NLS support updated; should hopefully be less troublesome.
  93
  94 * Added the old Bison reference card.
  95
  96 * Added `--locations' and `%locations'.
  97
  98 * Added `-S' and `--skeleton'.
  99
 100 * `%raw', `-r', `--raw' is disabled.
 101
 102 * Special characters are escaped when output.  This solves the problems
 103   of the #line lines with path names including backslashes.
 104
 105 * New directives.
 106   `%yacc', `%fixed_output_files', `%defines', `%no_parser', `%verbose',
 107   `%debug', `%source_extension' and `%header_extension'.
 108
 109 * @$
 110   Automatic location tracking.
 111 \f
 112 Changes in version 1.28, 1999-07-06:
 113
 114 * Should compile better now with K&R compilers.
 115
 116 * Added NLS.
 117
 118 * Fixed a problem with escaping the double quote character.
 119
 120 * There is now a FAQ.
 121 \f
 122 Changes in version 1.27:
 123
 124 * The make rule which prevented bison.simple from being created on
 125   some systems has been fixed.
 126 \f
 127 Changes in version 1.26:
 128
 129 * Bison now uses automake.
 130
 131 * New mailing lists: <bug-bison@gnu.org> and <help-bison@gnu.org>.
 132
 133 * Token numbers now start at 257 as previously documented, not 258.
 134
 135 * Bison honors the TMPDIR environment variable.
 136
 137 * A couple of buffer overruns have been fixed.
 138
 139 * Problems when closing files should now be reported.
 140
 141 * Generated parsers should now work even on operating systems which do
 142   not provide alloca().
 143 \f
 144 Changes in version 1.25, 1995-10-16:
 145
 146 * Errors in the input grammar are not fatal; Bison keeps reading
 147 the grammar file, and reports all the errors found in it.
 148
 149 * Tokens can now be specified as multiple-character strings: for
 150 example, you could use "<=" for a token which looks like <=, instead
 151 of chosing a name like LESSEQ.
 152
 153 * The %token_table declaration says to write a table of tokens (names
 154 and numbers) into the parser file.  The yylex function can use this
 155 table to recognize multiple-character string tokens, or for other
 156 purposes.
 157
 158 * The %no_lines declaration says not to generate any #line preprocessor
 159 directives in the parser file.
 160
 161 * The %raw declaration says to use internal Bison token numbers, not
 162 Yacc-compatible token numbers, when token names are defined as macros.
 163
 164 * The --no-parser option produces the parser tables without including
 165 the parser engine; a project can now use its own parser engine.
 166 The actions go into a separate file called NAME.act, in the form of
 167 a switch statement body.
 168 \f
 169 Changes in version 1.23:
 170
 171 The user can define YYPARSE_PARAM as the name of an argument to be
 172 passed into yyparse.  The argument should have type void *.  It should
 173 actually point to an object.  Grammar actions can access the variable
 174 by casting it to the proper pointer type.
 175
 176 Line numbers in output file corrected.
 177 \f
 178 Changes in version 1.22:
 179
 180 --help option added.
 181 \f
 182 Changes in version 1.20:
 183
 184 Output file does not redefine const for C++.
 185
 186 Local Variables:
 187 mode: outline
 188 End: