nobu	2014-05-18 15:08:54 +0900 (Sun, 18 May 2014)

  New Revision: 45993

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=45993

  Log:
    extmk.rb: discard empty Makefile
    
    * ext/extmk.rb (extmake): discard empty Makefile which can be left
      accidentally.

  Modified files:
    trunk/ext/extmk.rb
Index: ext/extmk.rb
===================================================================
--- ext/extmk.rb	(revision 45992)
+++ ext/extmk.rb	(revision 45993)
@@ -241,7 +241,7 @@ def extmake(target) https://github.com/ruby/ruby/blob/trunk/ext/extmk.rb#L241
 	$0 = $PROGRAM_NAME
       end
     end
-    ok &&= File.open(makefile){|f| !f.gets[DUMMY_SIGNATURE]}
+    ok &&= File.open(makefile){|f| s = f.gets and !s[DUMMY_SIGNATURE]}
     ok = yield(ok) if block_given?
     if ok
       open(makefile, "r+b") do |f|

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