view CONTRIBUTING @ 34508:b521b3a79afd

test-check-code: fail new commits which use 'atexit' instead of 'ui.atexit'

Callbacks registered with 'atexit' are sometimes not called (like when
hg aborts and calls os._exit). On the other hand, callbacks registered with
'ui.atexit' are called in most cases. Therefore, encouraging the use of
'ui.atexit' by failing the test 'test-check-code.t' appropriately.

Test Plan:
Ran the test 'test-check-code.t' after importing 'atexit' in one of
the py files and confirmed that the test fails.

Differential Revision: https://phab.mercurial-scm.org/D961

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https://www.mercurial-scm.org/wiki/ContributingChanges

If you just want a checklist to follow, you can go straight to

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If you can't run the entire testsuite for some reason (it can be
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any files you've modified and run `python contrib/check-commit` on any
commits you've made (for example, `python contrib/check-commit
273ce12ad8f1` will report some style violations on a very old commit).