Changes in version 2.1a:
-* DJGPP support added.
+* %destructor vs. YYACCEPT, YYERROR, and YYABORT.
+ When the parsing/action is cut by the user using one of these
+ special actions, the stack is freed except the right-hand side
+ symbols of the current rule.
+
+* GLR, C++ LALR(1) parsers.
+ These parser skeletons are now distributed with the same special
+ license exception that the C LALR(1) parser skeleton has had since
+ Bison 1.24. Hence the FSF imposes no copyright restriction on the
+ output of Bison when it is generating such parsers.
+
+* %expect, %expect-rr
+ Incorrect numbers of expected conflicts are now actual errors,
+ instead of warnings.
+
+* GLR, YACC parsers.
+ The %parse-params are available in the %destructor's (and the
+ experimental %printer's) as per the documentation.
+
+* Bison now warns if it finds a stray `$' or `@' in an action.
* %require "VERSION"
- To specify the youngest version of Bison accepted by the grammar file.
+ To specify that the grammar file depends on features implemented in
+ Bison version VERSION or higher.
* lalr1.cc: The token and value types are now class members.
- The tokens where defined as free form enums and cpp macros. YYSTYPE
- was defined as a free form union. Both are now class members:
+ The tokens were defined as free form enums and cpp macros. YYSTYPE
+ was defined as a free form union. They are now class members:
tokens are enumerations of the `yy::parser::token' struct, and the
semantic values have the `yy::parser::semantic_type' type.
If you wish to update, then make sure older version of Bison will
fail using `%require "2.1a"'.
+* DJGPP support added.
+
Changes in version 2.1, 2005-09-16:
+* The C++ lalr1.cc skeleton supports %lex-param.
+
* Bison-generated parsers now support the translation of diagnostics like
"syntax error" into languages other than English. The default
language is still English. For details, please see the new