NEWS

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