diff --git a/ChangeLog b/ChangeLog
index 4255ea3c63..114b9a707a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Tue Mar 16 04:05:13 2010  Tanaka Akira  <akr@fsij.org>
+
+	* tool/transcode-tblgen.rb: more info in generating macro names.
+
 Mon Mar 15 21:58:03 2010  Tanaka Akira  <akr@fsij.org>
 
 	* tool/transcode-tblgen.rb: ActionMap#each_firstbyte inlined.
diff --git a/tool/transcode-tblgen.rb b/tool/transcode-tblgen.rb
index 31c4ea0521..2636ed1a8f 100755
--- a/tool/transcode-tblgen.rb
+++ b/tool/transcode-tblgen.rb
@@ -486,7 +486,7 @@ End
       else
         name_hint2 = nil
         if name_hint
-          name_hint2 = "#{name_hint}_#{'%02X' % byte_min}"
+          name_hint2 = "#{name_hint}_#{byte_min == byte_max ? '%02X' % byte_min : '%02Xto%02X' % [byte_min, byte_max]}"
         end
         v = "/*BYTE_LOOKUP*/" + rest.gennode(bytes_code, words_code, name_hint2)
         byte_min.upto(byte_max) {|byte|