view .arcconfig @ 39260:27946fca8a05

match: document that visitchildrenset might return files

At least when using includematcher, and probably most matchers, we do not know
if a/b/f refers to a file 'f' in a/b, or a subdirectory 'f' in a/b, so most
matchers will return {'f'} for visitchildrenset('a/b'). Arguably, all matchers
could/should - for exactmatcher, we know that 'f' is a file, but there's no
reason to return 'this' for visitchildrenset('a/b') causing code to investigate
'a/b/x', for example.

Differential Revision: https://phab.mercurial-scm.org/D4364

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