maint: automate b4_copyright updates.

[bison.git] / NEWS

diff --git a/NEWS b/NEWS
index 3d5a561b09ecfb3af4603ca88a3b314aa8f0e903..b4887427cc2b37393fbc08f57dcc6c5f7bf3e8e5 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -25,6 +25,17 @@ Bison News
   use these prefixed token names, although the grammar itself still
   uses the short names (as in the sample rule given above).
 
   use these prefixed token names, although the grammar itself still
   uses the short names (as in the sample rule given above).
 

+** Variable api.namespace
+
+  The "namespace" variable is renamed "api.namespace".  Backward
+  compatibility is ensured, but upgrading is recommended.
+
+** Variable parse.error
+
+  The variable error controls the verbosity of error messages.  The
+  use of the %error-verbose directive is deprecated in favor of
+  %define parse.error "verbose".
+

 * Changes in version 2.5 (????-??-??):
 
 ** IELR(1) and Canonical LR(1) Support
 * Changes in version 2.5 (????-??-??):
 
 ** IELR(1) and Canonical LR(1) Support


@@ -57,6 +68,8 @@ Bison News
   These features are experimental.  More user feedback will help to
   stabilize them.
 
   These features are experimental.  More user feedback will help to
   stabilize them.
 

+** Multiple %define's for any variable is now an error not a warning.
+

 ** %define can now be invoked via the command line.
 
   Each of these command-line options
 ** %define can now be invoked via the command line.
 
   Each of these command-line options


@@ -120,6 +133,19 @@ Bison News
   about a missing semicolon where it did not before.  Future releases of
   Bison will cease to append semicolons entirely.
 
   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 (????-??-??):
 
 ** %code is now a permanent feature.
 * Changes in version 2.4.2 (????-??-??):
 
 ** %code is now a permanent feature.