NEWS

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