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+Mon Jul 20 12:51:39 2009  wanabe  <s.wanabe@gmail.com>
+
+	* lib/matrix.rb (Matrix#rank): revert a part of r20859 to avoid
+	  infinite loop.  [Bug #1020]
+
 Mon Jul 20 11:12:54 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* configure.in, Makefile.in (TEST_RUNNABLE): tests are no