nobu	2011-01-15 10:00:09 +0900 (Sat, 15 Jan 2011)

  New Revision: 30548

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=30548

  Log:
    * tool/compile_prelude.rb (Prelude#initialize): ignore empty
      preludes.

  Modified files:
    trunk/ChangeLog
    trunk/tool/compile_prelude.rb

Index: ChangeLog
===================================================================
--- ChangeLog	(revision 30547)
+++ ChangeLog	(revision 30548)
@@ -1,5 +1,8 @@
-Sat Jan 15 09:48:14 2011  Nobuyoshi Nakada  <nobu@r...>
+Sat Jan 15 10:00:07 2011  Nobuyoshi Nakada  <nobu@r...>
 
+	* tool/compile_prelude.rb (Prelude#initialize): ignore empty
+	  preludes.
+
 	* ruby.c (ruby_init_prelude): get rid of global namespace
 	  pullution.
 
Index: tool/compile_prelude.rb
===================================================================
--- tool/compile_prelude.rb	(revision 30547)
+++ tool/compile_prelude.rb	(revision 30548)
@@ -36,6 +36,7 @@
     @need_ruby_prefix = false
     @preludes = {}
     @mains = preludes.map {|filename| translate(filename)[0]}
+    @preludes.delete_if {|_, (_, _, lines, sub)| !sub && lines.empty?}
   end
 
   def translate(filename, sub = false)

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