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+Mon Oct 27 10:02:47 2008  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* io.c (read_all): the 3rd argument maybe Qnil.
+
 Mon Oct 27 01:29:55 2008  Yusuke Endoh  <mame@tsg.ne.jp>
 
 	* test/nkf/test_nkf.rb: add a test for [ruby-dev:36909].