X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/0179dd6542bbc73ae660fd7139a9bb19d82831c2..491bdd7ae5956e775b6aaf8a8b1a32bc77b4a17d:/NEWS

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@@ -3,6 +3,29 @@ Bison News
 
 Changes in version 1.49a:
 
+* 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
+
+           %token useless useful
+           %%
+           exp: '0' %prec useful;
+
+  where a token was used to set the precedence of the last rule,
+  bison reported both `useful' and `useless' as useless tokens.
+
 * Revert the C++ namespace changes introduced in 1.31, as they caused too
   many portability hassles.