opscode/mixlib-shellout — pull request #53 by maxlinc (2014-07-10 16:38:42+00:00)
Title: Support separate live stream for stderr

This PR adds support for using separate IO streams for live stdout and stderr streams. I tried to make the minimal number of changes and keep things backwards compatible - the default behavior is both stdout and stderr to go to live_stream (if one is set). If you want stdout only, you set live_stderr_stream to nil. If you want separate streams you set live_stream and live_stderr_stream to two separate values.