Mercurial > hg
view tests/test-merge-local.t @ 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 | 9e4f82bc2b0b |
children | 55c6ebd11cb9 |
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$ hg init Revision 0: $ echo "unchanged" > unchanged $ echo "remove me" > remove $ echo "copy me" > copy $ echo "move me" > move $ for i in 1 2 3 4 5 6 7 8 9; do > echo "merge ok $i" >> zzz1_merge_ok > done $ echo "merge bad" > zzz2_merge_bad $ hg ci -Am "revision 0" adding copy adding move adding remove adding unchanged adding zzz1_merge_ok adding zzz2_merge_bad Revision 1: $ hg rm remove $ hg mv move moved $ hg cp copy copied $ echo "added" > added $ hg add added $ echo "new first line" > zzz1_merge_ok $ hg cat zzz1_merge_ok >> zzz1_merge_ok $ echo "new last line" >> zzz2_merge_bad $ hg ci -m "revision 1" Local changes to revision 0: $ hg co 0 4 files updated, 0 files merged, 3 files removed, 0 files unresolved $ echo "new last line" >> zzz1_merge_ok $ echo "another last line" >> zzz2_merge_bad $ hg diff --nodates | grep "^[+-][^<>]" --- a/zzz1_merge_ok +++ b/zzz1_merge_ok +new last line --- a/zzz2_merge_bad +++ b/zzz2_merge_bad +another last line $ hg st M zzz1_merge_ok M zzz2_merge_bad Local merge with bad merge tool: $ HGMERGE=false hg co merging zzz1_merge_ok merging zzz2_merge_bad merging zzz2_merge_bad failed! 3 files updated, 1 files merged, 2 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges [1] $ hg resolve -m (no more unresolved files) $ hg co 0 merging zzz1_merge_ok merging zzz2_merge_bad warning: conflicts while merging zzz2_merge_bad! (edit, then use 'hg resolve --mark') 2 files updated, 1 files merged, 3 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges [1] $ hg diff --nodates | grep "^[+-][^<>]" --- a/zzz1_merge_ok +++ b/zzz1_merge_ok +new last line --- a/zzz2_merge_bad +++ b/zzz2_merge_bad +another last line +======= $ hg st M zzz1_merge_ok M zzz2_merge_bad ? zzz2_merge_bad.orig Local merge with conflicts: $ hg resolve -m (no more unresolved files) $ hg co merging zzz1_merge_ok merging zzz2_merge_bad warning: conflicts while merging zzz2_merge_bad! (edit, then use 'hg resolve --mark') 3 files updated, 1 files merged, 2 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges [1] $ hg resolve -m (no more unresolved files) $ hg co 0 --config 'ui.origbackuppath=.hg/origbackups' merging zzz1_merge_ok merging zzz2_merge_bad warning: conflicts while merging zzz2_merge_bad! (edit, then use 'hg resolve --mark') 2 files updated, 1 files merged, 3 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges [1] Are orig files from the last commit where we want them? $ ls .hg/origbackups zzz2_merge_bad $ hg diff --nodates | grep "^[+-][^<>]" --- a/zzz1_merge_ok +++ b/zzz1_merge_ok +new last line --- a/zzz2_merge_bad +++ b/zzz2_merge_bad +another last line +======= +======= +new last line +======= $ hg st M zzz1_merge_ok M zzz2_merge_bad ? zzz2_merge_bad.orig Local merge without conflicts: $ hg revert zzz2_merge_bad $ hg resolve -m (no more unresolved files) $ hg co merging zzz1_merge_ok 4 files updated, 1 files merged, 2 files removed, 0 files unresolved $ hg diff --nodates | grep "^[+-][^<>]" --- a/zzz1_merge_ok +++ b/zzz1_merge_ok +new last line $ hg st M zzz1_merge_ok ? zzz2_merge_bad.orig