view tests/test-cat.out @ 9658:852b1f3032d2

hook: only redirect stdout if it and stderr are valid files

When using hgwebdir with WSGI via the IIS ISAPI-WSGI extension, both
stdout and stderr filenos are set to -2, which makes the os.dup call
in hook.py fail.

adding a
adding b
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a: No such file in rev 03f6b0774996
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