skel: better aliasing of identifiers

[bison.git] / NEWS

diff --git a/NEWS b/NEWS
index 39c812e0ddcd5d0be245f896063cd7e183c0d087..6e499aeeff8ed93292b011a6d6d106e05d813e3f 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -6,10 +6,13 @@ GNU Bison NEWS
 
 *** Obsolete features
 
-  Support for YYFAIL is removed (deprecated in Bison 2.4.2).
-  Support for yystype and yyltype (instead of YYSTYPE and YYLTYPE)
-  is removed (deprecated in Bison 1.875).
-  Support for YYPARSE_PARAM is removed (deprecated in Bison 1.875).
+  Support for YYFAIL is removed (deprecated in Bison 2.4.2): use YYERROR.
+
+  Support for yystype and yyltype is removed (deprecated in Bison 1.875):
+  use YYSTYPE and YYLTYPE.
+
+  Support for YYLEX_PARAM and YYPARSE_PARAM is removed (deprecated in Bison
+  1.875): use %lex-param, %parse-param, or %param.
 
 ** Warnings
 
@@ -195,6 +198,28 @@ GNU Bison NEWS
   used by the scanner, or rejecting invalid combinations from a
   factory invoked by the user actions).
 
+*** The epilogue is no longer affected by internal #defines
+
+  The glr.c skeleton uses defines such as #define yylval (yystackp->yyval) in
+  generated code.  These weren't properly undefined before the inclusion of
+  the user epilogue, so functions such as the following were butchered by the
+  preprocessor expansion:
+
+    int yylex (yy::parser::semantic_type *yylval);
+
+  This is has been fixed: yylval, ynerrs, yychar, and yylloc are now valid
+  identifiers for user-provided variables.
+
+** Renamed %define variables
+
+  The following variables have been renamed for consistency.  Backward
+  compatibility is ensured, but upgrading is recommended.
+
+    lr.default-reductions      -> lr.default-reduction
+    lr.keep-unreachable-states -> lr.keep-unreachable-state
+    namespace                  -> api.namespace
+    stype                      -> api.value.type
+
 ** Variable api.token.prefix
 
   The variable api.token.prefix changes the way tokens are identified in
@@ -211,14 +236,7 @@ GNU Bison NEWS
   use these prefixed token names, although the grammar itself still
   uses the short names (as in the sample rule given above).
 
-** Renamed %define variables
 
-  The following variables have been renamed for consistency.  Backward
-  compatibility is ensured, but upgrading is recommended.
-
-    lr.default-reductions      -> lr.default-reduction
-    lr.keep-unreachable-states -> lr.keep-unreachable-state
-    namespace                  -> api.namespace
 
 ** Variable parse.error