view CONTRIBUTING @ 39926:c4a3d3c67c4f

logtoprocess: connect all fds to /dev/null to avoid bad interaction with pager

We detected that pager is waiting for log-to-process script to finish, which
is annoying when adding a script on commandfinish that does an HTTP push.

There seems to be no workaround on the script side and it will make the
behavior on Linux/MacOS closer to the Windows behavior.

The drawback is that it makes the related tests more flaky as log-to-process
outputs are now really asynchronous.

If it's considered a BC change, another option would be to add a config option
for this new behavior. I personally think that the different behavior between
Windows and Linux is confusing and that it's a bug I would be fine with a new
config option.

Differential Revision: https://phab.mercurial-scm.org/D4816

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