Accept a token number in a %left, %right, or %nonassoc for POSIX

[bison.git] / NEWS

diff --git a/NEWS b/NEWS
index afc354211e027d4a1518a9a8fc11ae3e071fa14a..d0fc7abbc508891cce21f667c654ca73d123ac0c 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -18,7 +18,7 @@ Changes in version 2.3a+ (????-??-??):
 * Push Parsing
 
   Bison can now generate an LALR(1) parser in C with a push interface.  That
-  is, instead of invoking yyparse, which pulls tokens from `yylex', you can
+  is, instead of invoking `yyparse', which pulls tokens from `yylex', you can
   push one token at a time to the parser using `yypush_parse', which will
   return to the caller after processing each token.  By default, the push
   interface is disabled.  Either of the following directives will enable it:
@@ -41,9 +41,10 @@ Changes in version 2.3a+ (????-??-??):
 
     %defines "parser.h"
 
-* When reporting useless rules and nonterminals, Bison now employs the term
-  "useless in grammar" instead of "useless" and employs the term "useless in
-  parser" instead of "never reduced".
+* When reporting useless rules, useless nonterminals, and unused terminals,
+  Bison now employs the terms "useless in grammar" instead of "useless",
+  "useless in parser" instead of "never reduced", and "unused in grammar"
+  instead of "unused".
 
 * Unreachable State Removal
 
@@ -153,6 +154,10 @@ Changes in version 2.3a+ (????-??-??):
   See the section `Freeing Discarded Symbols' in the Bison manual for further
   details.
 
+* %left, %right, and %nonassoc can now declare token numbers.  This is required
+  by POSIX.  However, see the end of section `Operator Precedence' in the Bison
+  manual for a caveat concerning the treatment of literal strings.
+
 Changes in version 2.3a, 2006-09-13:
 
 * Instead of %union, you can define and use your own union type
@@ -977,7 +982,7 @@ End:
 -----
 
 Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
-2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
 
 This file is part of Bison, the GNU Compiler Compiler.