NEWS

   1 Bison News
   2 ----------
   3
   4 Changes in version 1.28c:
   5
   6 * the input and the output files has automatically a similar extension.
   7
   8 * Russian translation added.
   9
  10 * NLS support updated; should hopefully be less troublesome.
  11
  12 * Added the old Bison reference card.
  13
  14 * Added `--locations' and `%locations'.
  15
  16 * Added `-S' and `--skeleton'.
  17
  18 * `%raw', `-r', `--raw' is disabled.
  19
  20 * Special characters are escaped when output.  This solves the problems
  21   of the #line lines with path names including backslashes.
  22
  23 * New directives.
  24   `%yacc', `%fixed_output_files', `%defines', `%no_parser', `%verbose', and
  25   `%debug'.
  26 \f
  27 Changes in version 1.28:
  28
  29 * Should compile better now with K&R compilers.
  30
  31 * Added NLS.
  32
  33 * Fixed a problem with escaping the double quote character.
  34
  35 * There is now a FAQ.
  36 \f
  37 Changes in version 1.27:
  38
  39 * The make rule which prevented bison.simple from being created on
  40   some systems has been fixed.
  41 \f
  42 Changes in version 1.26:
  43
  44 * Bison now uses automake.
  45
  46 * New mailing lists: <bug-bison@gnu.org> and <help-bison@gnu.org>.
  47
  48 * Token numbers now start at 257 as previously documented, not 258.
  49
  50 * Bison honors the TMPDIR environment variable.
  51
  52 * A couple of buffer overruns have been fixed.
  53
  54 * Problems when closing files should now be reported.
  55
  56 * Generated parsers should now work even on operating systems which do
  57   not provide alloca().
  58 \f
  59 Changes in version 1.25:
  60
  61 * Errors in the input grammar are not fatal; Bison keeps reading
  62 the grammar file, and reports all the errors found in it.
  63
  64 * Tokens can now be specified as multiple-character strings: for
  65 example, you could use "<=" for a token which looks like <=, instead
  66 of chosing a name like LESSEQ.
  67
  68 * The %token_table declaration says to write a table of tokens (names
  69 and numbers) into the parser file.  The yylex function can use this
  70 table to recognize multiple-character string tokens, or for other
  71 purposes.
  72
  73 * The %no_lines declaration says not to generate any #line preprocessor
  74 directives in the parser file.
  75
  76 * The %raw declaration says to use internal Bison token numbers, not
  77 Yacc-compatible token numbers, when token names are defined as macros.
  78
  79 * The --no-parser option produces the parser tables without including
  80 the parser engine; a project can now use its own parser engine.
  81 The actions go into a separate file called NAME.act, in the form of
  82 a switch statement body.
  83 \f
  84 Changes in version 1.23:
  85
  86 The user can define YYPARSE_PARAM as the name of an argument to be
  87 passed into yyparse.  The argument should have type void *.  It should
  88 actually point to an object.  Grammar actions can access the variable
  89 by casting it to the proper pointer type.
  90
  91 Line numbers in output file corrected.
  92 \f
  93 Changes in version 1.22:
  94
  95 --help option added.
  96 \f
  97 Changes in version 1.20:
  98
  99 Output file does not redefine const for C++.