From: Gerd Moellmann <gerd@gnu.org>
Date: Wed, 22 Dec 1999 10:57:23 +0000 (+0000)
Subject: (Fset_buffer_multibyte): Arrange for a thorough
X-Git-Tag: emacs-pretest-21.0.90~5649
X-Git-Url: http://git.eshelyaron.com/gitweb/?a=commitdiff_plain;h=724b203fbafecdfa720ed2dd998a9c53eea2d44d;p=emacs.git

(Fset_buffer_multibyte): Arrange for a thorough
redisplay after changing the multibyteness of a buffer.
---

diff --git a/src/buffer.c b/src/buffer.c
index 04368804b7a..47d15e9fcf1 100644
--- a/src/buffer.c
+++ b/src/buffer.c
@@ -1881,12 +1881,20 @@ but the contents viewed as characters do change.")
       set_intervals_multibyte (1);
     }
 
+  /* Changing the multibyteness of a buffer means that all windows
+     showing that buffer must be updated thoroughly.  */
+  current_buffer->prevent_redisplay_optimizations_p = 1;
+  ++windows_or_buffers_changed;
+
   /* Copy this buffer's new multibyte status
      into all of its indirect buffers.  */
   for (other = all_buffers; other; other = other->next)
     if (other->base_buffer == current_buffer && !NILP (other->name))
-      other->enable_multibyte_characters
-	= current_buffer->enable_multibyte_characters;
+      {
+	other->enable_multibyte_characters
+	  = current_buffer->enable_multibyte_characters;
+	other->prevent_redisplay_optimizations_p = 1;
+      }
 
   return flag;
 }