Some code and documentation improvements.

[bison.git] / NEWS

diff --git a/NEWS b/NEWS
index 7d401ad51049e2023459c8e59a583432f9e79b45..d300fbc4c45ed2ac024d4a4c4906045acde7600a 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -98,8 +98,23 @@ Bison News
   about a missing semicolon where it did not before.  Future releases of
   Bison will cease to append semicolons entirely.
 
+** Character literals not of length one.
+
+  Previously, Bison quietly converted all character literals to length
+  one.  For example, without warning, Bison interpreted the operators in
+  the following grammar to be the same token:
+
+    exp: exp '++'
+       | exp '+' exp
+       ;
+
+  Bison now warns when a character literal is not of length one.  In
+  some future release, Bison will report an error instead.
+
 * Changes in version 2.4.2 (????-??-??):
 
+** Detection of GNU M4 1.4.6 or newer during configure is improved.
+
 ** %code is now a permanent feature.
 
   A traditional Yacc prologue directive is written in the form: