* NEWS: Bison now warns if it finds a stray `$' or `@' in an action.

[bison.git] / NEWS

diff --git a/NEWS b/NEWS
index 9523191dbf3194faaabb65a32586270c7a9e603c..2ab95345109392bae414f129aa9bea4e2d371f3f 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -3,6 +3,28 @@ Bison News
 
 Changes in version 2.1a:
 
+* Bison now warns if it finds a stray `$' or `@' in an action.
+
+* %require "VERSION"
+  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:
+  tokens are enumerations of the `yy::parser::token' struct, and the
+  semantic values have the `yy::parser::semantic_type' type.
+
+  If you do not want or can update to this scheme, the directive
+  `%define "global_tokens_and_yystype" "1"' triggers the global
+  definition of tokens and YYSTYPE.  This change is suitable both
+  for previous releases of Bison, and this one.
+
+  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:
 
 * Bison-generated parsers now support the translation of diagnostics like