update: better logic and messages for updates
- complain about attempts to merge with ancestor
- when updating, differentiate between
- crossing named branches with no local changes (jump)
- crossing named branches with local changes (complain)
- nonlinear update on the same named branch, no changes (complain some more)
- nonlinear update on the same named branch, changes (different complaining)
hgweb: fix breakage in python < 2.5 introduced in
2c370f08c486
don't use hasattr in repo.invalidate
hasattr ends up calling __getattr__ which will instantiate the very
attributes we want to remove.
localrepo.commit: grab locks before getting the list of files to commit
Somebody may change the dirstate after we've determined the parents of
the working dir and run repo.status, but before we called wlock().
This should also fix
issue997, where backout would change a file without
changing its size and then call repo.commit without passing the list of
files. If this happened in less than one second, we wouldn't detect any
file changes - the in-memory dirstate still has the cached stat data for
that file. Grabbing the wlock early causes the dirstate to be
invalidated and we end up reading the dirstate file again, which has
that file marked for lookup (size == -1).
A better fix would be for backout to give repo.commit the exact list of
files, but that'll require some changes to the revert operation.
A significant user-visible change is that the precommit hook is always
run with both locks grabbed - previously, hg commit would run it before
grabbing any locks, but hg import would run it after grabbing locks.
Avoid calling heads() twice on every hg commit.
In an extreme case (merging two revisions with very low revision numbers)
this could be slower than the previous code, but it should be much faster
in the usual cases (parents are near the tip). It also avoids some races
in some uninteresting cases (e.g. two concurrent hg commits).