Don't suppress warnings about unused parse.error.

[Joel E. Denny]

I pushed this to master.

>From 82db7cdb69931bfbc547a2e84ee06fdd7293e6e9 Mon Sep 17 00:00:00 2001
From: Joel E. Denny <address@hidden>
Date: Thu, 3 Sep 2009 14:27:16 -0400
Subject: [PATCH] Don't suppress warnings about unused parse.error.

* data/bison.m4 (b4_error_verbose_flag): Don't examine value of
%define variable parse.error unless b4_error_verbose_flag is
actually expanded in a skeleton.
---
 ChangeLog     |    7 +++++++
 data/bison.m4 |    6 +++---
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index d4cdc6d..754063d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2009-09-03  Joel E. Denny  <address@hidden>
+
+       Don't suppress warnings about unused parse.error.
+       * data/bison.m4 (b4_error_verbose_flag): Don't examine value of
+       %define variable parse.error unless b4_error_verbose_flag is
+       actually expanded in a skeleton.
+
 2009-09-03  Akim Demaille  <address@hidden>
 
        * NEWS (2.4.2): Add "Internationalization" item.
diff --git a/data/bison.m4 b/data/bison.m4
index 0928721..4a36802 100644
--- a/data/bison.m4
+++ b/data/bison.m4
@@ -794,9 +794,9 @@ b4_percent_define_default([[parse.error]], [[simple]])
 b4_percent_define_check_values([[[[parse.error]],
                                  [[simple]], [[verbose]]]])
 m4_define([b4_error_verbose_flag],
-          m4_case(b4_percent_define_get([[parse.error]]),
-                  [simple],  [[0]],
-                  [verbose], [[1]]))
+          [m4_case(b4_percent_define_get([[parse.error]]),
+                   [simple],  [[0]],
+                   [verbose], [[1]])])
 b4_define_flag_if([error_verbose])
 
 
-- 
1.5.4.3