NEWS

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