From: Kenichi Handa <handa@m17n.org>
Date: Thu, 9 Apr 2009 03:47:31 +0000 (+0000)
Subject: (map_charset_chars): For a charset of `superset'
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X-Git-Url: https://dgit.raspbian.org/%22http:/www.example.com/cgi/%22https:/www.github.com/%22bookmarks:///%22http:/www.example.com/cgi/%22https:/www.github.com/%22bookmarks:/?a=commitdiff_plain;h=74a64ddaf7da1091ed8f1332e95408920400d7d0;p=emacs.git

(map_charset_chars): For a charset of `superset'
method, fix calculation of code range.
---

diff --git a/src/charset.c b/src/charset.c
index 54602ebe21d..492849f6868 100644
--- a/src/charset.c
+++ b/src/charset.c
@@ -809,8 +809,8 @@ map_charset_chars (c_function, function, arg,
 
 	  charset = CHARSET_FROM_ID (XFASTINT (XCAR (XCAR (parents))));
 	  offset = XINT (XCDR (XCAR (parents)));
-	  this_from = from - offset;
-	  this_to = to - offset;
+	  this_from = from > offset ? from - offset : 0;
+	  this_to = to > offset ? to - offset : 0;
 	  if (this_from < CHARSET_MIN_CODE (charset))
 	    this_from = CHARSET_MIN_CODE (charset);
 	  if (this_to > CHARSET_MAX_CODE (charset))