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+Mon Sep  2 22:55:59 2013  Tanaka Akira  <[email protected]>
+
+	* bignum.c (ISDIGIT): Unused macro removed.
+
 Mon Sep  2 22:49:15 2013  Tanaka Akira  <[email protected]>
 
 	* bignum.c (str2big_poweroftwo): Extracted from rb_cstr_to_inum.