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[bison.git] / NEWS

diff --git a/NEWS b/NEWS
index f339c6591ae89594ff936804f83bb849d3288ca8..e02a9797407164ab69362c1e5a83c4fb2a04ae5c 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -11,19 +11,25 @@ Changes in version 1.49a:
   If yylex returned a code out of range, yyparse could die.  This is
   no longer the case.
 
+* Error token
+  According to POSIX, the error token should be numbered as 256.
+  Bison extends this requirement by making it a preference: *if* the
+  user specified that one of her tokens is numbered 256, then error
+  will be mapped onto another number.
+
 * Large grammars
   Are now supported (large token numbers, large grammar size (= sum of
-  the LHS and RHS lengths).
+  the LHS and RHS lengths), large LALR tables).
 
 * The initial rule is explicit.
   Bison used to play hacks with the initial rule, which the user does
   not write.  It is now explicit, and visible in the reports and
   graphs as rule 0.
-      
+
 * Useless rules are actually removed.
   Before, Bison reported the useless rules, but, although not used,
   included them in the parsers.
-        
+
 * False `Token not used' report fixed.
   On a grammar such as