Mercurial > hg
view hgext/narrow/narrowtemplates.py @ 45375:8c466bcb0879
revert: remove dangerous `parents` argument from `cmdutil.revert()`
As we found out the hard way (thanks to spectral@ for figuring it
out!), `cmdutil.revert()`'s `parents` argument must be
`repo.dirstate.parents()` or things may go wrong. We had an extension
that passed in the target commit as the first parent. The `hg split`
command from the evolve extension seems to have made the same mistake,
but I haven't looked carefully.
The problem is that `cmdutil._performrevert()` calls
`dirstate.normal()` on reverted files if the commit to revert to
equals the first parent. So if you pass in `ctx=foo` and
`parents=(foo.node(), nullid)`, then `dirstate.normal()` will be
called for the revert files, even though they might not be clean in
the working copy.
There doesn't seem to be any reason, other than a tiny performance
benefit, to passing the `parents` around instead of looking them up
again in `cmdutil._performrevert()`, so that's what this patch does.
Differential Revision: https://phab.mercurial-scm.org/D8925
author | Martin von Zweigbergk <martinvonz@google.com> |
---|---|
date | Mon, 10 Aug 2020 21:46:47 -0700 |
parents | 687b865b95ad |
children | 6000f5b25c9b |
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# narrowtemplates.py - added template keywords for narrow clones # # Copyright 2017 Google, Inc. # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. from __future__ import absolute_import from mercurial import ( registrar, revlog, ) keywords = {} templatekeyword = registrar.templatekeyword(keywords) revsetpredicate = registrar.revsetpredicate() def _isellipsis(repo, rev): if repo.changelog.flags(rev) & revlog.REVIDX_ELLIPSIS: return True return False @templatekeyword(b'ellipsis', requires={b'repo', b'ctx'}) def ellipsis(context, mapping): """String. 'ellipsis' if the change is an ellipsis node, else ''.""" repo = context.resource(mapping, b'repo') ctx = context.resource(mapping, b'ctx') if _isellipsis(repo, ctx.rev()): return b'ellipsis' return b'' @templatekeyword(b'outsidenarrow', requires={b'repo', b'ctx'}) def outsidenarrow(context, mapping): """String. 'outsidenarrow' if the change affects no tracked files, else ''.""" repo = context.resource(mapping, b'repo') ctx = context.resource(mapping, b'ctx') m = repo.narrowmatch() if ctx.files() and not m.always(): if not any(m(f) for f in ctx.files()): return b'outsidenarrow' return b'' @revsetpredicate(b'ellipsis()') def ellipsisrevset(repo, subset, x): """Changesets that are ellipsis nodes.""" return subset.filter(lambda r: _isellipsis(repo, r))