NEWS

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