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+Tue Oct 16 19:48:01 2007  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* re.c (rb_reg_s_union): check for encoding of original object.
+
 Tue Oct 16 18:28:51 2007  Tanaka Akira  <akr@fsij.org>
 
 	* debug.c: use enum for constants for gdb if possible.