view .arcconfig @ 46642:b9f40b743627

typing: add type annotations to mercurial/i18n.py

I'm a little unsure of this because `gettext()` clearly allows for passing
unicode.  But the comments seem to indicate that this is related to tests, and
this was useful for catching unicode being passed to `_()` in the keyring
extension.  I'm also not sure why `_(None)` would make any sense, so maybe the
argument shouldn't be optional?  I didn't add it to the lambda in plain mode
because that spilled beyond 80 characters and so black mangled it.

Black and pytype disagree on where the comment to disable a check needs to go,
so this has to disable and then enable the checking.

Differential Revision: https://phab.mercurial-scm.org/D10124

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