NEWS

   1 Bison News
   2 ----------
   3
   4 Changes in version 1.49a:
   5
   6 * Items overflow
   7   Bison no longer dumps core when there are too many items, it just
   8   dies.
   9
  10 * Token end-of-file
  11   The token end of file may be specified by the user, in which case,
  12   the user symbol is used in the reports, the graphs, and the verbose
  13   error messages instead of `$', which remains being the defaults.
  14   For instance
  15      %token YYEOF 0
  16   or
  17      %token YYEOF 0 "end of file"
  18 \f
  19 Changes in version 1.30:
  20
  21 * `--defines' and `--graph' have now an optionnal argument which is the
  22   output file name. `-d' and `-g' do not change, they do not take any
  23   argument.
  24
  25 * `%source_extension' and `%header_extension' are removed, failed
  26   experiment.
  27
  28 * Portability fixes.
  29 \f
  30 Changes in version 1.29, 2001-09-07:
  31
  32 * The output file does not define const, as this caused problems when used
  33   with common autoconfiguration schemes.  If you still use ancient compilers
  34   that lack const, compile with the equivalent of the C compiler option
  35   `-Dconst='.  autoconf's AC_C_CONST macro provides one way to do this.
  36
  37 * Added `-g' and `--graph'.
  38
  39 * The Bison manual is now distributed under the terms of the GNU FDL.
  40
  41 * The input and the output files has automatically a similar extension.
  42
  43 * Russian translation added.
  44
  45 * NLS support updated; should hopefully be less troublesome.
  46
  47 * Added the old Bison reference card.
  48
  49 * Added `--locations' and `%locations'.
  50
  51 * Added `-S' and `--skeleton'.
  52
  53 * `%raw', `-r', `--raw' is disabled.
  54
  55 * Special characters are escaped when output.  This solves the problems
  56   of the #line lines with path names including backslashes.
  57
  58 * New directives.
  59   `%yacc', `%fixed_output_files', `%defines', `%no_parser', `%verbose',
  60   `%debug', `%source_extension' and `%header_extension'.
  61
  62 * @$
  63   Automatic location tracking.
  64 \f
  65 Changes in version 1.28, 1999-07-06:
  66
  67 * Should compile better now with K&R compilers.
  68
  69 * Added NLS.
  70
  71 * Fixed a problem with escaping the double quote character.
  72
  73 * There is now a FAQ.
  74 \f
  75 Changes in version 1.27:
  76
  77 * The make rule which prevented bison.simple from being created on
  78   some systems has been fixed.
  79 \f
  80 Changes in version 1.26:
  81
  82 * Bison now uses automake.
  83
  84 * New mailing lists: <bug-bison@gnu.org> and <help-bison@gnu.org>.
  85
  86 * Token numbers now start at 257 as previously documented, not 258.
  87
  88 * Bison honors the TMPDIR environment variable.
  89
  90 * A couple of buffer overruns have been fixed.
  91
  92 * Problems when closing files should now be reported.
  93
  94 * Generated parsers should now work even on operating systems which do
  95   not provide alloca().
  96 \f
  97 Changes in version 1.25, 1995-10-16:
  98
  99 * Errors in the input grammar are not fatal; Bison keeps reading
 100 the grammar file, and reports all the errors found in it.
 101
 102 * Tokens can now be specified as multiple-character strings: for
 103 example, you could use "<=" for a token which looks like <=, instead
 104 of chosing a name like LESSEQ.
 105
 106 * The %token_table declaration says to write a table of tokens (names
 107 and numbers) into the parser file.  The yylex function can use this
 108 table to recognize multiple-character string tokens, or for other
 109 purposes.
 110
 111 * The %no_lines declaration says not to generate any #line preprocessor
 112 directives in the parser file.
 113
 114 * The %raw declaration says to use internal Bison token numbers, not
 115 Yacc-compatible token numbers, when token names are defined as macros.
 116
 117 * The --no-parser option produces the parser tables without including
 118 the parser engine; a project can now use its own parser engine.
 119 The actions go into a separate file called NAME.act, in the form of
 120 a switch statement body.
 121 \f
 122 Changes in version 1.23:
 123
 124 The user can define YYPARSE_PARAM as the name of an argument to be
 125 passed into yyparse.  The argument should have type void *.  It should
 126 actually point to an object.  Grammar actions can access the variable
 127 by casting it to the proper pointer type.
 128
 129 Line numbers in output file corrected.
 130 \f
 131 Changes in version 1.22:
 132
 133 --help option added.
 134 \f
 135 Changes in version 1.20:
 136
 137 Output file does not redefine const for C++.
 138
 139 Local Variables:
 140 mode: outline
 141 End: