NEWS

   1 Bison News
   2 ----------
   3
   4 Changes in version 1.30g:
   5
   6 * Bug fixes
   7
   8 * Better C++ compliance
   9   The output parsers try to respect C++ namespaces.
  10
  11 Changes in version 1.30f:
  12
  13 * Reduced Grammars
  14   Fixed bugs when reporting useless nonterminals.
  15
  16 * 64 bit hosts
  17   The parsers work properly on 64 bit hosts.
  18
  19 Changes in version 1.30e:
  20
  21 * Error messages
  22   Some calls to strerror resulted in scrambled or missing error messages.
  23
  24 * %expect
  25   When the number of shift/reduce conflicts is correct, don't issue
  26   any warning.
  27
  28 * The verbose report includes the rule line numbers.
  29
  30 * Rule line numbers are fixed in traces.
  31
  32 Changes in version 1.30d:
  33
  34 * Swedish translation
  35
  36 * Parse errors
  37   Verbose parse error messages from the parsers are better looking.
  38   Before: parse error: unexpected `'/'', expecting `"number"' or `'-'' or `'(''
  39      Now: parse error: unexpected '/', expecting "number" or '-' or '('
  40
  41 * Fixed VCG output
  42   Was broken when strings aliases for symbols were used.
  43
  44 Changes in version 1.30c:
  45
  46 * Fixed a few warnings.
  47
  48 * Some portability issues.
  49
  50 Changes in version 1.30b:
  51
  52 * Fixed parser memory leaks.
  53   When the generated parser was using malloc to extend its stacks, the
  54   previous allocations were not freed.
  55
  56 * Fixed verbose output file.
  57   Some newlines were missing.
  58   Some conflicts in state descriptions were missing.
  59
  60 * Fixed conflict report.
  61   Option -v was needed to get the result.
  62
  63 * %expect
  64   Was not used.
  65   Mismatches are errors, not warnings.
  66
  67 * Fixed incorrect processing of some invalid input.
  68
  69 * Fixed CPP guards: 9foo.h uses BISON_9FOO_H instead of 9FOO_H.
  70
  71 * Fixed some typos in the documentation.
  72
  73 * %token MY_EOF 0 is supported.
  74   Before, MY_EOF was silently renumbered as 257.
  75
  76 * doc/refcard.tex is updated.
  77
  78 * %output, %file-prefix, %name-prefix.
  79   New.
  80
  81 * --output
  82   New, aliasing `--output-file'.
  83 \f
  84 Changes in version 1.30, 2001-10-26:
  85
  86 * `--defines' and `--graph' have now an optionnal argument which is the
  87   output file name. `-d' and `-g' do not change, they do not take any
  88   argument.
  89
  90 * `%source_extension' and `%header_extension' are removed, failed
  91   experiment.
  92
  93 * Portability fixes.
  94 \f
  95 Changes in version 1.29, 2001-09-07:
  96
  97 * The output file does not define const, as this caused problems when used
  98   with common autoconfiguration schemes.  If you still use ancient compilers
  99   that lack const, compile with the equivalent of the C compiler option
 100   `-Dconst='.  autoconf's AC_C_CONST macro provides one way to do this.
 101
 102 * Added `-g' and `--graph'.
 103
 104 * The Bison manual is now distributed under the terms of the GNU FDL.
 105
 106 * The input and the output files has automatically a similar extension.
 107
 108 * Russian translation added.
 109
 110 * NLS support updated; should hopefully be less troublesome.
 111
 112 * Added the old Bison reference card.
 113
 114 * Added `--locations' and `%locations'.
 115
 116 * Added `-S' and `--skeleton'.
 117
 118 * `%raw', `-r', `--raw' is disabled.
 119
 120 * Special characters are escaped when output.  This solves the problems
 121   of the #line lines with path names including backslashes.
 122
 123 * New directives.
 124   `%yacc', `%fixed_output_files', `%defines', `%no_parser', `%verbose',
 125   `%debug', `%source_extension' and `%header_extension'.
 126
 127 * @$
 128   Automatic location tracking.
 129 \f
 130 Changes in version 1.28, 1999-07-06:
 131
 132 * Should compile better now with K&R compilers.
 133
 134 * Added NLS.
 135
 136 * Fixed a problem with escaping the double quote character.
 137
 138 * There is now a FAQ.
 139 \f
 140 Changes in version 1.27:
 141
 142 * The make rule which prevented bison.simple from being created on
 143   some systems has been fixed.
 144 \f
 145 Changes in version 1.26:
 146
 147 * Bison now uses automake.
 148
 149 * New mailing lists: <bug-bison@gnu.org> and <help-bison@gnu.org>.
 150
 151 * Token numbers now start at 257 as previously documented, not 258.
 152
 153 * Bison honors the TMPDIR environment variable.
 154
 155 * A couple of buffer overruns have been fixed.
 156
 157 * Problems when closing files should now be reported.
 158
 159 * Generated parsers should now work even on operating systems which do
 160   not provide alloca().
 161 \f
 162 Changes in version 1.25, 1995-10-16:
 163
 164 * Errors in the input grammar are not fatal; Bison keeps reading
 165 the grammar file, and reports all the errors found in it.
 166
 167 * Tokens can now be specified as multiple-character strings: for
 168 example, you could use "<=" for a token which looks like <=, instead
 169 of chosing a name like LESSEQ.
 170
 171 * The %token_table declaration says to write a table of tokens (names
 172 and numbers) into the parser file.  The yylex function can use this
 173 table to recognize multiple-character string tokens, or for other
 174 purposes.
 175
 176 * The %no_lines declaration says not to generate any #line preprocessor
 177 directives in the parser file.
 178
 179 * The %raw declaration says to use internal Bison token numbers, not
 180 Yacc-compatible token numbers, when token names are defined as macros.
 181
 182 * The --no-parser option produces the parser tables without including
 183 the parser engine; a project can now use its own parser engine.
 184 The actions go into a separate file called NAME.act, in the form of
 185 a switch statement body.
 186 \f
 187 Changes in version 1.23:
 188
 189 The user can define YYPARSE_PARAM as the name of an argument to be
 190 passed into yyparse.  The argument should have type void *.  It should
 191 actually point to an object.  Grammar actions can access the variable
 192 by casting it to the proper pointer type.
 193
 194 Line numbers in output file corrected.
 195 \f
 196 Changes in version 1.22:
 197
 198 --help option added.
 199 \f
 200 Changes in version 1.20:
 201
 202 Output file does not redefine const for C++.
 203
 204 Local Variables:
 205 mode: outline
 206 End: