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+Fri Feb 16 19:24:22 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* math.c (math_log): update document to mention second optional
+	  argument for logarithm base. 
+
 Fri Feb 16 19:19:21 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
 	* parse.y (mrhs): need to append by arg_append().