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[bison.git] / NEWS

diff --git a/NEWS b/NEWS
index 6d86faf3faa582ccb037445ad8ce78ea824f1a8a..f339c6591ae89594ff936804f83bb849d3288ca8 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -3,6 +3,27 @@ Bison News
 
 Changes in version 1.49a:
 
+* Undefined token
+  The undefined token was systematically mapped to 2 which prevented
+  the use of 2 from the user.  This is no longer the case.
+
+* Undefined token
+  If yylex returned a code out of range, yyparse could die.  This is
+  no longer the case.
+
+* Large grammars
+  Are now supported (large token numbers, large grammar size (= sum of
+  the LHS and RHS lengths).
+
+* 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