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+Thu Mar 28 18:13:38 2013  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* string.c (str_byte_substr): don't set coderange if it's not known.
+	  [Bug #7954] [ruby-dev:47108]
+
 Thu Mar 28 18:12:19 2013  Kouhei Sutou  <kou@cozmixng.org>
 
 	* lib/rexml/document.rb: move entity_expansion_text_limit accessor to ...