Bug #457: Is irb/xmp supported in 1.9?
http://redmine.ruby-lang.org/issues/show/457

Author: Dave Thomas
Status: Open, Priority: Normal

Running the following:

 require 'irb/xmp'

 xmp <<END 
 artist = "Doc  Severinsen" 
 artist.upcase
 END

results in

(eval):3:in `Raise': frame underflow (IRB::Frame::FrameUnderflow)
	from /usr/local/rubybook/lib/ruby/1.9.0/irb/frame.rb:38:in `top'
	from /usr/local/rubybook/lib/ruby/1.9.0/irb/frame.rb:54:in `top'
	from /usr/local/rubybook/lib/ruby/1.9.0/irb/xmp.rb:81:in `xmp'
	from t1.rb:3:in `<main>'


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