[macruby-changes] [MacRuby/MacRuby] 9345af: IO.popen will return/yield subclass instances base...

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Branch: refs/heads/master
Home:   https://github.com/MacRuby/MacRuby

Commit: 9345af1ff62bc770dd9a5bc3e25db4dbd7a588c3
    https://github.com/MacRuby/MacRuby/commit/9345af1ff62bc770dd9a5bc3e25db4dbd7a588c3
Author: Watson <watson1978 at gmail.com>
Date:   2011-05-03 (Tue, 03 May 2011)

Changed paths:
  M io.c

Log Message:
-----------
IO.popen will return/yield subclass instances based on receiver.

Test Script:
{{{
require 'test/unit/assertions.rb'
include Test::Unit::Assertions

class SubIO < IO; end

ruby = "ruby"
args = ['-e', '$>.write($<.read)']

f = SubIO.popen([ruby] + args, 'r+')
assert_equal(SubIO, f.class)
f.close

SubIO.popen([ruby] + args, 'r+') { |io|
  assert_equal(SubIO, io.class)
}

puts :ok
}}}