nobu	2016-10-28 23:18:50 +0900 (Fri, 28 Oct 2016)

  New Revision: 56512

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=56512

  Log:
    transcode-tblgen.rb: dup literal string
    
    * tool/transcode-tblgen.rb: get rid of modifying frozen literal
      string.

  Modified files:
    trunk/tool/transcode-tblgen.rb
Index: tool/transcode-tblgen.rb
===================================================================
--- tool/transcode-tblgen.rb	(revision 56511)
+++ tool/transcode-tblgen.rb	(revision 56512)
@@ -1031,7 +1031,7 @@ if __FILE__ == $0 https://github.com/ruby/ruby/blob/trunk/tool/transcode-tblgen.rb#L1031
   VERBOSE_MODE = verbose_mode
 
   OUTPUT_FILENAME = output_filename
-  OUTPUT_PREFIX = output_filename ? File.basename(output_filename)[/\A[A-Za-z0-9_]*/] : ""
+  OUTPUT_PREFIX = output_filename ? File.basename(output_filename)[/\A[A-Za-z0-9_]*/] : "".dup
   OUTPUT_PREFIX.sub!(/\A_+/, '')
   OUTPUT_PREFIX.sub!(/_*\z/, '_')
 

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