tests: portability fix.

[bison.git] / NEWS

diff --git a/NEWS b/NEWS
index b4887427cc2b37393fbc08f57dcc6c5f7bf3e8e5..7a5009cc16b9b81a50adf753070e1504dbc55918 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -146,8 +146,19 @@ Bison News
   Bison now warns when a character literal is not of length one.  In
   some future release, Bison will report an error instead.
 
+** Verbose error messages fixed for nonassociative tokens.
+
+  When %error-verbose is specified, syntax error messages produced by
+  the generated parser include the unexpected token as well as a list of
+  expected tokens.  Previously, this list erroneously included tokens
+  that would actually induce a syntax error because conflicts for them
+  were resolved with %nonassoc.  Such tokens are now properly omitted
+  from the list.
+
 * 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: