Inspired by d01ecc5c46 "more detailed message describing deleted branches."
And yes, "jj git export" does propagate "jj branch forget" to the underlying
Git repository, which strengthen my feeling that git::export_refs() should
also remove "forgotten" remote tracking refs.
I thought we would need additional bookkeeping to detect forgotten branches,
but I was wrong. If a branch exists only in git_refs, it is forgotten (but not
yet exported.)
The motivating use-case was this `jj signoff` script: https://gist.github.com/thoughtpolice/8f2fd36ae17cd11b8e7bd93a70e31ad6
Which includes lines like this:
```sh
NAME=$(jj config list user.name | awk '{split($0, a, "="); print a[2];}' | tr -d '"')
MAIL=$(jj config list user.email | awk '{split($0, a, "="); print a[2];}' | tr -d '"')
```
There is no reason that we should have to clumsily parse out the config values. This `jj config get` command supports scripting use-cases like this.
This commit fixes#1305
Before this commit, running `jj init --git-repo=./` in a folder that
does not have a .git would cause jj to panick and leave an unfinished corrupted jj repo.
This commit fixes that by changing the call chain to return an error
instead of calling .unwrap() and panicking. This commit also adds logic to delete the unfinished jj
repository when the git backend initialization failed.
Before this commit, running the above command would result in the following
```
Running `jj/target/debug/jj init --git-repo=./`
thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Error { code: -3, klass: 2, message: "failed to resolve path '/Users/kevincliao/github/jj/test-repo/.jj/repo/store/../../../.git': No such file or directory" }', lib/src/git_backend.rs:83:75
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
```
After this commit, the result is the following and the jj repo is deleted:
```
Running `jj/target/debug/jj init --git-repo=./`
Error: Failed to access the repository: Error: Failed to open git repository: failed to resolve path '/Users/kevincliao/github/jj/test-repo/.jj/repo/store/../../../.git': No such file or directory; class=Os (2); code=NotFound (-3)
```
Use `br@git` instead.
Before, if there is not a local branch `br`, jj tried to resolve
it as a git ref `refs/heads/br`. Unchanged from before, `br` can
still be resolved as a tag `refs/tag/br`.
This doesn't change the way @git branches are stored in `git_refs` as opposed
to inside `BranchTarget` like normal remote-tracking branches. There are
subtle differences in behavior with e.g. `jj branch forget` and I'm not sure
how easy it is to rewrite `jj git import/export` to support a different
way of storage.
I've decided to call these "local-git tracking branches" since they track
branches in the local git repository. "local git-tracking" branches sounds a
bit more natural, but these could be confused with there are no remote
git-tracking branches. If one had the idea these might exist, they would be
confused with remote-tracking branches in the local git repo.
This addresses a portion of #1666
Since e48ace56d1, the number of adds in the hunk is always exactly
one more than enumber of removes, so we can simplify the condition and
the error message accordingly.
I think I will find this useful in at least two cases:
1. When you already have a branch pointing to some commit, it's easier
to do `jj git push -r xyz` than `jj git push --branch
push-xyzxyzyxzxyz`.
2. When you have a stack of changes, it's useful to be able to push
all of them at once.
I think we should also update the default behavior of `jj git push` to
be `jj git push -r 'remote_branches()..@'` or something like
that. That removes the ugliness of having a default behavior that the
user can't reproduce using flags. I'll leave that change for a
separate PR.
This was pretty simple. I simplified a bit by making the transaction
description mention only branches, not changes. It still mentions the
branches created for the changes, however. Also, since the operation
"tags" contain the full command line, I think it'll still be
relatively easy for the user to understand what the operation was
about.
I changed `test_early_args` because the first line no longer has a
redundant color reset, so now we test the `Commands:` line instead,
which has actual color (well, bold+underline anyway).
I made a typo and got something like this:
```
Error: Commit or change id prefix "wl" is ambiguous
```
Since we can tell commit ids from change ids these days, let's make
the error message say which kind of id it is. Changing that also kind
of forced me to make a special error for empty strings. Otherwise we
would have to arbitrarily say that an empty string is a commit id or
change id. A specific error message for empty strings seems helpful,
so that's probably for the better anyway.
Since we abuse TOML table syntax to define function aliases, an identical
function alias can be found more than once in the merged config. The merged
config doesn't preserve the definition order, so we need to load aliases
table per layer.
`jj sparse` is a bit different from other commands in that its `jj
sparse --list` is practically a separate command. Let's make it an
actual subcommand for consistency, and so we can more cleanly add
additional flags for `jj sparse list` in the future. I moved all the
other arguments to `jj sparse set`. I'm not sure if `jj sparse set
--reset` would have been better as `jj sparse reset`, but it is
technically just updating the sparse patterns just like the other
arguments (`--clear`, `--add` , `--remove`).
It's easier to follow the test if we try to resolve commits from the
`jj log` output just above. That's what we did until I changed it away
from that without thinking in fcda05c69b.
When I added `revsets.short-prefixes` in 20ef171d7a, I didn't notice
that I made the test of commit prefixes among hidden commits
ineffective because. This restores that by disabling short prefixes in
the test.
This bug concerns the way `import_refs` that gets called by `fetch` computes
the heads that should be visible after the import.
Previously, the list of such heads was computed *before* local branches were
updated based on changes to the remote branches. So, commits that should have
been abandoned based on this update of the local branches weren't properly
abandoned.
Now, `import_refs` tracks the heads that need to be visible because of some ref
in a mapping keyed by the ref. If the ref moves or is deleted, the
corresponding heads are updated.
Fixes#864
Before this, it was difficult to run an integration test after adding any
directives from printf-style debugging to jj (e.g. `err!`, `eprintln!`,
`println!`), since `jj_cmd_success` fails if `jj` to output anything to stderr
while `jj_cmd_failure` fails if stdout is not empty.
This adds a `TestEnvironment::debug_allow_stderr` variable that lifts this
restriction for `jj_cmd_success` and makes it output anything `jj` output to
stderr instead. You can set it directly or by running the test with the
`DEBUG_ALLOW_STDERR` environment variable set. You can then add `err!`
anywhere.
You do need to run the test in a somewhat special way, as described in the
docstring.
This adds a config called `revsets.short-prefixes`, which lets the
user specify a revset in which to disambiguate otherwise ambiguous
change/commit ids. It defaults to the value of `revsets.log`.
I made it so you can disable the feature by setting
`revsets.short-prefixes = ""`. I don't like that the default value
(using `revsets.log`) cannot be configured explicitly by the
user. That will be addressed if we decide to merge the `[revsets]` and
`[revset-aliases]` sections some day.
I plan to add `revsets.short-prefixes` and `revsets.immutable` soon,
and I think `[revsets]` seems like reasonable place to put them. It
seems consistent with our `[templates]` section. However, it also
suffers from the same problem as that section, which is that the
difference between `[templates]` and `[template-aliases]` is not
clear. We can decide about about templates and revsets later.
Before, HEAD@git was at change `e1f4` mentioned in the test. So, as long as we
consider the behavior added in 20eb9ec to be correct, that change should NOT
have been abandoned after the fetch, in spite of what the comment in the test
says. In other words, the test did NOT demonstrate a bug before this commit.
Now, the test properly demonstrates the bug.
Cc #864
The current behavior was introduced by 20eb9ecec1 "git: don't abandon
HEAD commit when it loses a branch." While the change made HEAD mutation
behavior more consistent with a plain ref operation, HEAD can also move on
checkout, and checkout shouldn't be considered a history rewriting operation.
I'm not saying the new behavior is always correct, but I think it's safer
than losing old HEAD branch. I also think this change will help if we want
to extract HEAD management function from git::import_refs().
Fixes#1042.
On "jj checkout", description of the working-copy commit is empty, and the
working-copy parent provides more information. It might be a bit verbose to
print parent summary on every history rewriting, but I think that's okay.
If "jj op undo" doesn't roll back git refs (#1541), test_git_import_undo()
would get weird state. I think these tests are easier to follow than
test_git_fetch_undo() since no remote refs are involved.
"jj show" is basically a "log" command with different defaults. We'll need
to consider this kind of stuff if we want to introduce namespace to templates.
