stack --test --file-watch threading output quirk
when working on some test specs and having stack rebuild and test on file modification, i observe some strange output that appears to come about due to the order of text output to the console.
the behaviour i note is output like the following
(note that control characters have been interspersed amongst regular output)
to reproduce this bug,
i just added to the existing spec
now, i only observe this quirk when the tests fail, and when i actually make a change to the file itself, as opposed to just pressing enter in the stack terminal to re-build.
if it's relevant, i'm using
(i'll note that it works fine if i press enter; with the failing output suitably coloured red; in an earlier version of stack i was using i got similar garbled text, but the output was no longer red when it failed. in this version, it's always red, but the final few lines are garbled.)
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