* enc/euc_tw.c (euctw_islead): 0x8e is a leading byte.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@15323 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Tue Jan 29 21:59:16 2008  Tanaka Akira  <akr@fsij.org>
+
+	* enc/euc_tw.c (euctw_islead): 0x8e is a leading byte.
+
 Tue Jan 29 21:55:35 2008  Yusuke Endoh  <mame@tsg.ne.jp>
 
 	* bignum.c: move object allocation out of blocking_region.

enc/euc_tw.c

@@ -89,7 +89,7 @@ euctw_is_code_ctype(OnigCodePoint code, unsigned int ctype, OnigEncoding enc)
   return onigenc_mb4_is_code_ctype(enc, code, ctype);
 }
 
-#define euctw_islead(c)    (((c) < 0xa1 && (c) != 0x8e) || (c) == 0xff)
+#define euctw_islead(c)    ((UChar )((c) - 0xa1) > 0xfe - 0xa1)
 
 static UChar*
 euctw_left_adjust_char_head(const UChar* start, const UChar* s, OnigEncoding enc)