Since fileset/revset/template expressions are specified as command-line
arguments, it's sometimes convenient to use single quotes instead of double
quotes. Various scripting languages parse single-quoted strings in various ways,
but I choose the TOML rule because it's simple and practically useful. TOML is
our config language, so copying the TOML syntax would be less surprising than
borrowing it from another language.
https://github.com/toml-lang/toml/issues/188
While I like strict parsing, it's not uncommon that we have to deal with file
names containing spaces, and doubly-quoted strings such as '"Foo Bar"' look
ugly. So, this patch adds an exception that accepts top-level bare strings.
This parsing rule is specific to command arguments, and won't be enabled when
loading fileset aliases.
When you use e.g. `git switch` to check out a conflicted commit,
you're going to end up with the `.jjconflicts-*` directories in your
working copy. It's probably not obvious what those mean. This patch
adds a README file to the root tree to try to explain to users what's
going on and how to recover.
The authoritative information about conflicts is stored in the
`jj:trees` commit header. The contents of conflicted commits is only
used for preventing GC. We can therefore add contents to the tree
without much consequence.
This addresses the test instability. The underlying problem still exists, but
it's unlikely to trigger user-facing issues because of that. A repo instance
won't be reused after gc() call.
Fixes#3537
Apparently, these gc() invocations rely on that the previous "git gc" packed
all refs so there are no loose refs to compare mtimes. If there were new (or
remaining) loose refs, mtime comparison could fail. I also added +1sec to
effectively turn off the keep_newer option, which isn't important in these
tests.
CommitIds are often manipulated by reference, so this makes the API more
flexible for cases where the caller doesn't already have a Vec or array of
owned CommitIds.
In many cases `rewrite_parents()` does not even need to clone the input
CommitIds. This refactor allows the clone to be avoided if it's unnecessary.
There might be other APIs that would benefit from a similar change. In general,
it seems like there are a lot of places where we're writing
`&[commit_x.id().clone, commit_y.id().clone()]` and similiar.
- [Rust API Guidelines](https://rust-lang.github.io/api-guidelines/flexibility.html#functions-minimize-assumptions-about-parameters-by-using-generics-c-generic)
## Feature Description
If enabled in the user or repository settings, the local branches pointing to the
parents of the revision targeted by `jj commit` will be advanced to the newly
created commit. Support for `jj new` will be added in a future change.
This behavior can be enabled by default for all branches by setting
the following in the config.toml:
```
[experimental-advance-branches]
enabled-branches = ["glob:*"]
```
Specific branches can also be disabled:
```
[experimental-advance-branches]
enabled-branches = ["glob:*"]
disabled-branches = ["main"]
```
Branches that match a disabled pattern will not be advanced, even if they also
match an enabled pattern.
This implements feature request #2338.
It's reasonable for a `WorkingCopy` implementation to want to return
an error. `LocalWorkingCopyFactory` doesn't because it loads all data
lazily. The VFS-based one at Google wants to be able to return an
error, however.
Previously, this command would work:
jj --config-toml='snapshot.max-new-file-size="1"' st
And is equivalent to this:
jj --config-toml='snapshot.max-new-file-size="1B"' st
But this would not work, despite looking like it should:
jj --config-toml='snapshot.max-new-file-size=1' st
This is extremely confusing for users.
This config value is deserialized via serde; and while the `HumanByteSize`
struct allegedly implemented Serde's `visit_u64` method, it was not called by
the deserialize visitor. Strangely, adding an `visit_i64` method *did* work, but
then requires handling of overflow, etc. This is likely because TOML integers
are naturally specified in `i64`.
Instead, just don't bother with any of that; implement a `TryFrom<String>`
instance for `HumanByteSize` that uses `u64::from_str` to try parsing the string
immediately; *then* fall back to `parse_human_byte_size` if that doesn't work.
This not only fixes the behavior but, IMO, is much simpler to reason about; we
get our `Deserialize` instance for free from the `TryFrom` instance.
Finally, this adjusts the test for `max-new-file-size` to now use a raw integer
literal, to ensure it doesn't regress. (There are already in-crate tests for
parsing the human readable strings.)
Signed-off-by: Austin Seipp <aseipp@pobox.com>
Change-Id: I8dafa2358d039ad1c07e9a512c1d10fed5845738
`jj parallelize` was a good example of a command that can be
simplified by the new API, so I decided to rewrite it as an example.
The rewritten version is more flexible and doesn't actually need the
restrictions from the old version (such as checking that the commits
are connected). I still left the check for now to keep this patch
somewhat small. A subsequent commit will remove the restrictions.
There are several existing commands that would benefit from an API
that makes it easier to rewrite a whole graph of commits while
transforming them in some way.
`jj squash` is one example. When squashing into an ancestor, that
command currently rewrites the ancestor, then rebases descendants, and
then rewrites the rewritten source commit. It would be better to
rewrite the source commit (and any descendants) only once.
Another example is the future `jj fix`. That command will want to
rewrite a graph while updating the trees. There's currently no good
API for that; you have to manually iterate over descendants and
rewrite them.
This patch adds a new `MutableRepo::transform_descendants()` method
that takes a callback which gets a `CommitRewriter` passed to it. The
callback can then decide to change the parents, the tree, etc. The
callback is also free to leave the commit in place or to abandon it.
I updated the regular `rebase_descendants()` to use the new function
in order to exercise it. I hope we can replace all of the
`rebase_descendant_*()` flavors later.
I added a `replace_parent()` method that was a bit useful for the test
case. It could easily be hard-coded in the test case instead, but I
think the method will be useful for `jj git sync` and similar in the
future.
`CommitRewriter` wraps 3 of the arguments, so I think it makes sense
to pass it instead. More importantly, I hope to continue refactoring
so many of the callers already have a `CommitRewriter`.
The new `rebase()` method is meant to be called after deciding on the
new parents (typically by leaving them unchanged). It returns a
`CommitBuilder` for setting any additional values.
There will probably be a `reparent()` method in the future.
This patch adds a struct that's meant to help when rewriting
commits. It contains the old commits and the new parents. I hope to
move most of the logic from `rebase_commit_with_options()` onto it in
coming patches. Then this type can be passed in a callback to make it
easier to do custom rewriting of commits that is currently hard to do
because `rebase_descendants()` does not give the caller any control
over the process.
The helper is similar to `CommmitBuilder`, but it is a bit different
by also embedding information about the source commit, so I don't
think the API would be as convenient if we just used `CommitBuilder`
directly.
Mercurial appears to resolve cwd-relative path first, so "glob:*.c" could be
parsed as "**/*.c" if cwd was literally "**". It wouldn't practically matter,
but isn't correct. Instead, jj's parser first splits glob into literal part
and pattern. That's mainly because we want to parse the user input texts into
type-safe objects, and (RepoPathBuf, glob::Pattern) pairs are the simplest
ones. The current parser can't handle patterns like "foo/*/.." (= "foo" ?),
and errors out. I believe this restriction is acceptable.
Unlike literal paths, the 'glob:' pattern anchors to the whole file path. I
don't think "prefix"-matching glob is useful, and making it the default would
be rather confusing.
Patterns are specified as (dir, pattern) pairs because we need to handle
parse errors prior to constructing a matcher, and it's convenient to split
literal directory paths there.
It's cheap to look up commits again from the cache in `Store` but it
can be expensive to look up commits we didn't end up needing. This
will make it easier to refactor further and be able to cheaply set
preliminary parents for a rewritten commits and then let the caller
update them.
I'm going to add a helper struct to help with rewriting commits. I
want to make that struct own the old commit and the new parents to
simplify lifetimes. This patch prepares for that by passing the
commits by value to `rebase_commit()`.
Running `cargo publish` from a non-colocated repo (such as my usual
repo) is currently quite scary because it uploads all non-hidden
files, even if they're ignored by `.gitignore`
(https://github.com/rust-lang/cargo/issues/2063). I noticed this a
while ago and have always run the command from a fresh clone since
then. To avoid the need for that, let's use the workaround mentioned
on the bug, which is to explicitly list patterns we want to publish.
This prepares for adding glob matcher, which will be backed by
RepoPathTree<Vec<glob::Pattern>>.
FilesNodeKind/PrefixNodeKind are basically boolean types, but implemented as
enums for better code readability.
The is_dir flag will be removed soon. Since FilesMatcher doesn't set is_dir
flag explicitly, is_dir is equivalent to !entries.is_empty(). OTOH,
PrefixMatcher always sets is_dir, so all tree nodes are directories.
Perhaps, I didn't do that because it's important to initialize is_dir/file to
false. Since I'm going to extract a generic map-like API, and is_dir/file will
be an enum, this won't be a problem.
I'm going to extract generic map from RepoPathTree, and .get_visit_sets()
will be inlined into FilesMatcher/PrefixMatcher. These removed tests should
be covered by the corresponding matcher tests.
The functions now depend only on `MutableRepo`, so I think they belong
on that type. This gets us closer to being able to make
`parent_mapping` private again.
I think the recent refactorings (especially 9c382fd8c6) make it
pretty clear that `DescendantRebaser` will not attempt to rebase the
same commit twice, so I think we can remove the assertions. This
removes some of the places where `DescendantRebaser` reaches into
`MutableRepo`'s internals.
The Pijul maintainer has opinions that I don't understand about how we
mention Pijul (they consider the current mentions offensive as
"bashing Pijul"). Let's just remove the references so we don't have to
deal with it. I think the references to Darcs we already had in most
of these places are sufficient.
This implements the other workaround described in 57167cefda "git: on
import_refs(), don't abandon ancestors of newly fetched refs":
> I think there are two ways to fix the problem:
> a. pin non-tracking remote branches just like local refs
> b. pin newly fetched refs in addition to local refs
> This patch implements (b) because it's simpler and more obvious that the
> fetched commits would never be abandoned immediately.
The idea of (a) is that untracked remote branches are independent read-only
refs, and read-only branches shouldn't be rewritten implicitly. Once the
branch gets rewritten or abandoned by user, these remote refs will be hidden,
and won't be pinned anymore.
Since (a) effectively supersedes (b), this patch also removes the original
workaround.
Fixes#3495
If we ever implement some sort of ABI for dynamic extension loading, we'll need these underlying APIs to support multiple extensions, so we might as well do that first.
