I would expect `Commit::is_empty()` to check if the commit is empty in
our usual sense, i.e. that there are no changes compared to the
auto-merged parents. However, it would return `false` for any merge
commit (and for the root commit). Since we only use it in one place,
let's inline it there. The use there does seem reasonable, because
it's about abandoning an "uninteresting" working-copy commit.
We don't actually need `jj` itself in the development shell. But having it in
the overlay significantly increases the time it takes to build the shell.
Our installation instructions don't currently work with Rust < 1.64
because `clap` updated their MSRV to 1.64, and `cargo install` without
`--locked` bypasses `Cargo.lock` and selects the version of `clap`
that needs Rust 1.64.
A method call is typically parsed as (obj.meth)(), not as obj.(meth()),
but the latter is good enough for our needs. It's unlikely we'll add a
first-class function support.
.into_inner().next().unwrap() mess will be cleaned up by the next commit.
I think of it more as style than a format, so using `style` in the
config key makes sense to me.
I didn't bother making upgrades easy by supporting the old name since
this was just released and only a few developers probably have it set.
Now that the `renderdag` crate is available on crates.io (thanks,
@quark-zju!), let's get it from there.
It has no optional features, so we don't need `default-features =
false`. I should have done that when we switched from the `dag` crate
to the `renderdag` crate.
The heading says it's going to explain aliases, but it doesn't, and
now that we've documented aliases in config.md, we probably don't need
to mention it in the tutorial.
The name of the [alias] section is inconsistent with other
table-valued sections ([revset-aliases], [colors], [merge-tools]), so
let's rename it. For comparison, `Cargo.toml` also uses plural names
(e.g. `[dependencies]`).
I don't think need to write non-UTF8 bytes to our config files. If we
ever do (maybe to test that we give the user a reasonable error
message), we add a custom function for that.
This basically removes 'a lifetime from these wrappers, and add trait bounds
instead. I have no idea which version would look less scary, but let's see.
I also added trait bounds to constructor functions. They aren't strictly
required, but help type inference of closure (and will probably improve
an error message.)
Fixes#787
If `jj squash` is run on an empty commit, it fails with "Error: No changes selected"
With this change such squash command will behave like `jj abandon`.
I would expect `set_up_fake_[diff_]editor()` to create an empty script
but it turns out they didn't even create the files. That means that
the caller needs to write an empty script to them if they want the
fake editors to not do anything. Let's instead write the empty
scripts, for a less surprising behavior.
revset::resolve_change_id() for ReadonlyRepo will be replaced with this
implementation. This doesn't mean revset query will speed up. A trivial
query will become slower due to the initialization cost of the change id
index. "jj log -r hex" will get faster since we have to pay the cost anyway.
Benchmark numbers (against my "linux" repo):
Command:
hyperfine --warmup 3 --runs 20 \
"jj log -r $hex -T '' --no-commit-working-copy --no-graph"
Linear search (e874570947):
Time (mean ± σ): 223.9 ms ± 16.2 ms [User: 181.2 ms, System: 42.7 ms]
Range (min … max): 207.7 ms … 247.6 ms 50 runs
Building IdIndex:
Time (mean ± σ): 855.0 ms ± 21.7 ms [User: 788.4 ms, System: 66.6 ms]
Range (min … max): 822.6 ms … 927.5 ms 50 runs
Building IdIndex, but hacked to store SmallVec<[u8; 20]>:
Time (mean ± σ): 406.1 ms ± 15.9 ms [User: 354.1 ms, System: 52.0 ms]
Range (min … max): 382.2 ms … 428.6 ms 50 runs
For my "jj" work repo, changes are < ~1ms.
I've preferred "working-copy commit" over "checkout" for a while
because I think it's clearer, but there were lots of places still
using "checkout". I've left "checkout" in places where it refers to
the action of updating the working copy or the working-copy commit.
`SimpleOpHeadsStore` currently stores its files in
`.jj/repo/op_heads/simple_op_heads/`. The `.jj/repo/op_heads/type`
file indicates the type of op-heads backend. If that contains
"simple_op_head_store", we use the `SimpleOpHeadsStore`
backend. There's no need for the `simple_op_heads` directory to also
indicate the type of backend in its name. I kept just the `heads` in
the name to make it less redundant with the parent directory (which is
`op_heads)`. We could alternatively call the directory `values` or
similar.
