NEWS

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