view .arcconfig @ 41647:ec37db02fc72

diff: make `hg diff --root=subrepo` work

The root prefix is currently stripped before adding the subrepo
prefix. It seems to me that if you run `hg diff --root=subrepo` and a
subrepo/ path is visited (say "subrepo/foo"), then the path generated
for the diff would initially be just "foo" and we then fail (if the
developer warning is active) to strip the "subrepo/" from the path. It
seems like we should first add the prefix in order to produce a path
that's relative to the top-level repo, and then we can remove the root
prefix from that. There are no tests for this, it seems, and I don't
care enough to add one.

Differential Revision: https://phab.mercurial-scm.org/D5895

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