view .clang-format @ 46762:052ab8d0a538

command: clarify `postincoming` return and that return handling

The command should return None or a return code. The previous code was returning
boolean directly relying on the fact that `True → 1` and `False → 0`. This is a
good road to troubles, so lets be explicit about that return.

Differential Revision: https://phab.mercurial-scm.org/D10157

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