From: Daniel Vartanov <daniel.vartanov@...>
Date: 2009-02-03T20:19:49+09:00
Subject: Event-based stdout content capturing

Some legacy code produces output to STDOUT during execution. I need to
capture it on even-based model, something like the following:

capture the_legacy_code_lambda do |content|
  # do something with content each time something appears in STDOUT
end

how can I manage this? Are there any idioms?