[DUX-3004]: handle evil clients that send ANSI escapes after NL #345
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I probably should shove an integration test in there as well, since maybe hspec might do new and creative evil stuff in the future. OTOH this seems like a pain and we have a regression test for the internal logic at least. |
Wew. That was a bug. The reproducer is here: https://github.com/rampion/ghciwatch-bug-demo After tracing `consume_str`, I found out that the cause of our problems is that hspec includes the NL in their coloured output before resetting colour. https://github.com/hspec/hspec/blob/fb9916f07e580f2572220d381e1886e765df95b7/hspec-core/src/Test/Hspec/Core/Formatters/Internal.hs#L297-L306 That means that it is a pain in the ass to parse, since it shoves random ANSI escapes onto the next line. The easiest, and probably most correct, solution to this is to just eat ANSI escapes while looking for markers.
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I guess this is fine? We could also relax the constraint that matches happen at the start of the line, but that's probably a more invasive change. I do wonder if there's other libraries that don't write a trailing newline though.
Actually, I just checked, and putStr "puppy" has the same problem. We probably do need to just fix this so it doesn't require the prompt is on the start of the line.
Happy to merge this as a first-line bugfix, but we should do a more complete fix soon (#346).
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Wew. That was a bug.
The reproducer is here: https://github.com/rampion/ghciwatch-bug-demo
After tracing
consume_str, I found out that the cause of our problems is that hspec includes the NL in their coloured output before resetting colour.https://github.com/hspec/hspec/blob/fb9916f07e580f2572220d381e1886e765df95b7/hspec-core/src/Test/Hspec/Core/Formatters/Internal.hs#L297-L306
That means that it is a pain in the ass to parse, since it shoves random ANSI escapes onto the next line. The easiest, and probably most correct, solution to this is to just eat ANSI escapes while looking for markers.
patch,minor, ormajorto request a version bump when it's merged.docs/.tests/.