nobu	2016-04-25 16:56:03 +0900 (Mon, 25 Apr 2016)

  New Revision: 54760

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=54760

  Log:
    extmk.rb: refactor
    
    * ext/extmk.rb: extract non-blank part without intermediate
      objects.

  Modified files:
    trunk/ext/extmk.rb
Index: ext/extmk.rb
===================================================================
--- ext/extmk.rb	(revision 54759)
+++ ext/extmk.rb	(revision 54760)
@@ -627,7 +627,7 @@ void Init_ext(void)\n{\n#$extinit} https://github.com/ruby/ruby/blob/trunk/ext/extmk.rb#L627
     ['SETUP', $setup],
     ['EXTLIBS', $extlibs.join(' ')], ['EXTLDFLAGS', $extflags]
   ].map {|n, v|
-    "#{n}=#{v}" if v and !(v = v.strip).empty?
+    "#{n}=#{v}" if v &&= v[/\S(?:.*\S)?/]
   }.compact
   puts(*conf)
   $stdout.flush

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