diff --git a/7.3.638 b/7.3.638
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+To: vim_dev@googlegroups.com
+Subject: Patch 7.3.638
+Fcc: outbox
+From: Bram Moolenaar <Bram@moolenaar.net>
+Mime-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+------------
+
+Patch 7.3.638
+Problem:    Unecessary redraw of the previous character.
+Solution:   Check if the character is double-width. (Jon Long)
+Files:	    src/screen.c
+
+
+*** ../vim-7.3.637/src/screen.c	2012-07-10 16:49:08.000000000 +0200
+--- src/screen.c	2012-08-23 18:49:33.000000000 +0200
+***************
+*** 5332,5339 ****
+  		    && (ScreenLinesUC[off_from] != ScreenLinesUC[off_to]
+  			|| (ScreenLinesUC[off_from] != 0
+  			    && comp_char_differs(off_from, off_to))
+! 			|| (cols > 1 && ScreenLines[off_from + 1]
+! 						 != ScreenLines[off_to + 1])))
+  #endif
+  	       ))
+  	return TRUE;
+--- 5332,5340 ----
+  		    && (ScreenLinesUC[off_from] != ScreenLinesUC[off_to]
+  			|| (ScreenLinesUC[off_from] != 0
+  			    && comp_char_differs(off_from, off_to))
+! 			|| ((*mb_off2cells)(off_from, off_from + cols) > 1
+! 			    && ScreenLines[off_from + 1]
+! 						  != ScreenLines[off_to + 1])))
+  #endif
+  	       ))
+  	return TRUE;
+*** ../vim-7.3.637/src/version.c	2012-08-23 18:43:06.000000000 +0200
+--- src/version.c	2012-08-23 18:47:11.000000000 +0200
+***************
+*** 721,722 ****
+--- 721,724 ----
+  {   /* Add new patch number below this line */
++ /**/
++     638,
+  /**/
+
+-- 
+There is a fine line between courage and foolishness.
+Unfortunately, it's not a fence.
+
+ /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net   \\\
+///        sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
+\\\  an exciting new programming language -- http://www.Zimbu.org        ///
+ \\\            help me help AIDS victims -- http://ICCF-Holland.org    ///