IO.popen4 should return status when using blocks
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Key: JRUBY-5673
URL: http://jira.codehaus.org/browse/JRUBY-5673
Project: JRuby
Issue Type: Improvement
Components: Extensions
Affects Versions: JRuby 1.6
Reporter: Marek Goldmann
This is on MRI:
irb(main):016:0> Open4::popen4('ls /') { |pid, stdin, stdout, stderr| }
=> #<Process::Status: pid=12850,exited(0)>
But IO.popen4 produces:
irb(main):045:0> IO.popen4('ls /') { |pid, stdin, stdout, stderr| }
=> nil
This makes it very hard to distinguish processes that exited normally from
aborted processes.
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