NEWS

   1 Bison News
   2 ----------
   3
   4 Changes in version 1.30f:
   5
   6 Changes in version 1.30e:
   7
   8 * Error messages
   9   Some calls to strerror resulted in scrambled or missing error messages.
  10
  11 * %expect
  12   When the number of shift/reduce conflicts is correct, don't issue
  13   any warning.
  14
  15 * The verbose report includes the rule line numbers.
  16
  17 * Rule line numbers are fixed in traces.
  18
  19 Changes in version 1.30d:
  20
  21 * Swedish translation
  22
  23 * Parse errors
  24   Verbose parse error messages from the parsers are better looking.
  25   Before: parse error: unexpected `'/'', expecting `"number"' or `'-'' or `'(''
  26      Now: parse error: unexpected '/', expecting "number" or '-' or '('
  27
  28 * Fixed VCG output
  29   Was broken when strings aliases for symbols were used.
  30
  31 Changes in version 1.30c:
  32
  33 * Fixed a few warnings.
  34
  35 * Some portability issues.
  36
  37 Changes in version 1.30b:
  38
  39 * Fixed parser memory leaks.
  40   When the generated parser was using malloc to extend its stacks, the
  41   previous allocations were not freed.
  42
  43 * Fixed verbose output file.
  44   Some newlines were missing.
  45   Some conflicts in state descriptions were missing.
  46
  47 * Fixed conflict report.
  48   Option -v was needed to get the result.
  49
  50 * %expect
  51   Was not used.
  52   Mismatches are errors, not warnings.
  53
  54 * Fixed incorrect processing of some invalid input.
  55
  56 * Fixed CPP guards: 9foo.h uses BISON_9FOO_H instead of 9FOO_H.
  57
  58 * Fixed some typos in the documentation.
  59
  60 * %token MY_EOF 0 is supported.
  61   Before, MY_EOF was silently renumbered as 257.
  62
  63 * doc/refcard.tex is updated.
  64
  65 * %output, %file-prefix, %name-prefix.
  66   New.
  67
  68 * --output
  69   New, aliasing `--output-file'.
  70 \f
  71 Changes in version 1.30, 2001-10-26:
  72
  73 * `--defines' and `--graph' have now an optionnal argument which is the
  74   output file name. `-d' and `-g' do not change, they do not take any
  75   argument.
  76
  77 * `%source_extension' and `%header_extension' are removed, failed
  78   experiment.
  79
  80 * Portability fixes.
  81 \f
  82 Changes in version 1.29, 2001-09-07:
  83
  84 * The output file does not define const, as this caused problems when used
  85   with common autoconfiguration schemes.  If you still use ancient compilers
  86   that lack const, compile with the equivalent of the C compiler option
  87   `-Dconst='.  autoconf's AC_C_CONST macro provides one way to do this.
  88
  89 * Added `-g' and `--graph'.
  90
  91 * The Bison manual is now distributed under the terms of the GNU FDL.
  92
  93 * The input and the output files has automatically a similar extension.
  94
  95 * Russian translation added.
  96
  97 * NLS support updated; should hopefully be less troublesome.
  98
  99 * Added the old Bison reference card.
 100
 101 * Added `--locations' and `%locations'.
 102
 103 * Added `-S' and `--skeleton'.
 104
 105 * `%raw', `-r', `--raw' is disabled.
 106
 107 * Special characters are escaped when output.  This solves the problems
 108   of the #line lines with path names including backslashes.
 109
 110 * New directives.
 111   `%yacc', `%fixed_output_files', `%defines', `%no_parser', `%verbose',
 112   `%debug', `%source_extension' and `%header_extension'.
 113
 114 * @$
 115   Automatic location tracking.
 116 \f
 117 Changes in version 1.28, 1999-07-06:
 118
 119 * Should compile better now with K&R compilers.
 120
 121 * Added NLS.
 122
 123 * Fixed a problem with escaping the double quote character.
 124
 125 * There is now a FAQ.
 126 \f
 127 Changes in version 1.27:
 128
 129 * The make rule which prevented bison.simple from being created on
 130   some systems has been fixed.
 131 \f
 132 Changes in version 1.26:
 133
 134 * Bison now uses automake.
 135
 136 * New mailing lists: <bug-bison@gnu.org> and <help-bison@gnu.org>.
 137
 138 * Token numbers now start at 257 as previously documented, not 258.
 139
 140 * Bison honors the TMPDIR environment variable.
 141
 142 * A couple of buffer overruns have been fixed.
 143
 144 * Problems when closing files should now be reported.
 145
 146 * Generated parsers should now work even on operating systems which do
 147   not provide alloca().
 148 \f
 149 Changes in version 1.25, 1995-10-16:
 150
 151 * Errors in the input grammar are not fatal; Bison keeps reading
 152 the grammar file, and reports all the errors found in it.
 153
 154 * Tokens can now be specified as multiple-character strings: for
 155 example, you could use "<=" for a token which looks like <=, instead
 156 of chosing a name like LESSEQ.
 157
 158 * The %token_table declaration says to write a table of tokens (names
 159 and numbers) into the parser file.  The yylex function can use this
 160 table to recognize multiple-character string tokens, or for other
 161 purposes.
 162
 163 * The %no_lines declaration says not to generate any #line preprocessor
 164 directives in the parser file.
 165
 166 * The %raw declaration says to use internal Bison token numbers, not
 167 Yacc-compatible token numbers, when token names are defined as macros.
 168
 169 * The --no-parser option produces the parser tables without including
 170 the parser engine; a project can now use its own parser engine.
 171 The actions go into a separate file called NAME.act, in the form of
 172 a switch statement body.
 173 \f
 174 Changes in version 1.23:
 175
 176 The user can define YYPARSE_PARAM as the name of an argument to be
 177 passed into yyparse.  The argument should have type void *.  It should
 178 actually point to an object.  Grammar actions can access the variable
 179 by casting it to the proper pointer type.
 180
 181 Line numbers in output file corrected.
 182 \f
 183 Changes in version 1.22:
 184
 185 --help option added.
 186 \f
 187 Changes in version 1.20:
 188
 189 Output file does not redefine const for C++.
 190
 191 Local Variables:
 192 mode: outline
 193 End: