Otherwise a file could be created out of the working copy directory.
This only works for untracked symlinks and sequentially "added" symlinks
and files. For "removed" and "modified" entries, the parent directories are
considered valid and fs::remove_file() will be called. This also doesn't
prevent race conditions caused by concurrent checkouts.
New create_parent_dirs() would be slightly slower than the original because
it traverses directories from the root whereas fs::create_dir_all() does that
from the leaf and exits when reached to a directory.
This doesn't work yet since write_file() overwrites the existing file, which
will be fixed by the next patch.
I've added a callback parameter to update() just because that's the easiest
option. If we want to report the number of the conflicting files (through
CheckoutStats), the callback interface wouldn't work nicely and the error
handling would have to be moved to the update() body. If we want to make
both check_out() and set_sparse_patterns() ignore EEXIST error, we can
eliminate the calback parameter at all.
There is a bit of duplicated across the three functions for creating a
`Workspace` and `Repo`. This patch reduces that duplication by passing
in a closure.
In addition to reducing duplication, this is a step towards making it
easier to add new backends.
One advantage of our conflict marker style (compared to the usual
3-way markers) is that they provide the user with the diff between the
base and one side so the user doesn't have to do that in their head
(which is how I use 3-way markers anyway). However, since we currently
always use the "first" side for the diff, that diff can be larger than
if we had picked the other side, which makes the marker style worse
than the usual 3-way markers. This has bothered me many times and it's
about time we fix it.
We had a recent bug where we used a repo reference from before we
started a transaction and modified the repo. While it's often safe and
correct to use such references, it isn't always. This patch removes
all such cases. I think it generally makes the code clearer, and
better prepared for #50, if we ever get around to that. I found these
by temporarily making `WorkspaceCommandHelper::start_transaction()`
take a mutable reference.
The `CommitBuilder::store` field is used only in
`CommitBuilder::write_to_repo()`, but we can easily get access to the
`Store` from the `repo` argument there, so let's remove the field.
I think I had not added tests for successful push before because I
thought there was some issue with testing it with libgit2. There *is*
an issue, which is that libgit2 requires the remote to be bare when
it's on local disk, but we can very easily make the git repo bare in
this test.
I also updated the error handling in the `git` module to not let
follow-on errors hide the real error and to not fail if two branches
moved to the same commit.
By adding `ui.open-commits=false` in your config, you can now make `jj
checkout` always create a new working-copy commit on top of the
specified commit. If the config is set, open commits will also appear
in the same color as closed commits in `jj log` etc. This will let
some of us experiment with the new UX before we decide if it's a good
idea or not. I left `jj close` in place because it's useful for
setting a description and creating a new commit in one step.
I didn't mention the new config in the release notes because I hope we
can reach a decision and remove the config before the next release.
When rebasing commits after rewrites, we also update all workspaces'
checkouts. If the new commit is closed, we create a new commit on
top. Since we're hoping to remove the open/closed concept, we need a
new condition. I considered creating a new commit on top if the change
ID was different from before the rewrite. However, that would make at
least `jj split` more complicated because it makes the first commit
keep the change ID but it wants the second commit to be checked
out. This patch instead creates the new commit on top only when the
original commit was abandoned.
I think it's conceptually simpler to create a new commit and set that
commit to be the checkout in each workspace than to check out the
commit in one workspace and edit in the others.
If a file gets replaced by a directory right after list files in a
directory but before we stat the file, we currently crash. Let's
instead treat it as a missing file, using the mechanism introduced for
#258.
This patch makes us treat special files (e.g. Unix sockets) as absent
when snapshotting the working copy. We can consider later reporting
such files back to the caller (possibly via callback) so it can inform
the user about them.
Closes#258
This patch is essentially f6a516ff6d taken further, to also apply to
when we write a symlink or a conflict. As with regular files, these
races seem very unlikely to happen, but I found these cases while
working on #258, so let's fix. Fixing it also means that we don't need
to handle these transition cases in the next patch (when
`file_states()` can indicate that the file is e.g. a socket).
I plan to use this matcher for some future `jj add` command (for
#323). The idea is that we'll do a path-restricted walk of the working
copy based on the intersection of the sparse patterns and any patterns
specified by the user. However, I think it will be useful before that,
for @arxanas's fsmonitor feature (#362).
