Here's some backstory:
* on macOS, @cole-miller and I noticed that since roughly Oct 2025, due
to some changes to latest macOS Tahoe, for any spawned child process we
needed to reset Mach exception ports
(https://github.com/zed-industries/zed/issues/36754 +
https://github.com/RemiKalbe/zed/commit/6e8f2d2ebe5a93753625a3026aeb996de8cb436b)
* the changes in that PR achieve that via `pre_exec` hook on
`std::process::Command` which then abandons `posix_spawn` syscall for
`fork` + `execve` dance on macOS (we tracked it down in Rust's std
implementation)
* as it turns out, `fork` + `execve` is pretty expensive on macOS
(apparently way more so than on other OSes like Linux) and `fork` takes
a process-wide lock on the allocator which is bad
* however, since we wanna reset exception ports on the child, the only
official way supported by Rust's std is to use `pre_exec` hook
* posix_spawn on macOS exposes this tho via a macOS specific extension
to that syscall `posix_spawnattr_setexceptionports_np` but there is no
way to use that via any standard interfaces in `std::process::Command`
* thus, it seemed like a good idea to instead create our own custom
Command wrapper that on non-macOS hosts is a zero-cost wrapper of
`smol::process::Command`, while on macOS we reimplement the minimum to
achieve `smol::process::Command` with `posix_spawn` under-the-hood
Notably, this changeset improves git-blame in very large repos
significantly.
Release Notes:
- Fixed performance spawning child processes on macOS by always forcing
`posix_spawn` no matter what.
---------
Co-authored-by: Cole Miller <cole@zed.dev>
Some language servers include local symbols (e.g., local variables,
parameters) in workspace symbol results. Without the `containerName`
information, these symbols lack context information, making it difficult
to distinguish them from top-level definitions and hindering efficient
symbol lookup.
This change exposes the `container_name` field from LSP
[`SymbolInformation`](https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#symbolInformation)
to the extension API, allowing language server extensions to access
`symbol.container_name` in `label_for_symbol` and provide meaningful
context when rendering symbol labels.
Note: The `container_name `field is added to all extension API versions
because they seem to share the same underlying Rust types via wasmtime
bindgen. The field is optional, so existing extensions would remain
compatible as far as I understand.
Closes #ISSUE
Release Notes:
- Added `container_name` field to `lsp::Symbol`, accessible via the
extension API's `label_for_symbol` function
---------
Co-authored-by: MrSubidubi <finn@zed.dev>
Following the changes to the namespace caching, CI in the extensions
broke because cache conflicts arose there seemingly. Trying to set the
target here more explicitly in an effort to fix this.
Release Notes:
- N/A
This allows extensions to add more than one snippet file whilst keeping
it backwards compatible.
Release Notes:
- Added support for specifying multiple snippets paths in extensions.
While at it, annotate more functions that are potentially related to
language parsing in buffers.
Also, on macOS, in order to actually have callstack frames properly
recorded by Tracy, you need to manually run `dsymutil` on the binary.
Release Notes:
- N/A
This fixes an issue where the snippet file location would not be the
proper one for compiled extensions because it would be populated with an
absolute path instead of a relative one in relation to the extension
output directory. This caused the copy operation downstream to not do
anything, because it copied the file to the location it already was
(which was not the output directory for that extension).
Also adds some tests and pulls in the `Fs` so we do not have such issues
with snippets a third time hopefully.
Release Notes:
- N/A
When installing local "dev" extensions that provide tree-sitter
grammars, compiling the parser can be quite intensive[^anecdote]. This
PR changes the logic to only compile the parser if the WASM object
doesn't exist or the source files are newer than the object (just like
`make(1)` would do).
[^anecdote]: The tree-sitter parser for LLVM IR takes >10 minutes to
compile and uses 20 GB of memory on my laptop.
Release Notes:
- N/A
---------
Co-authored-by: Finn Evers <finn.evers@outlook.de>
Closes#42406
The issue for the fish-extension is that a `extension.json` is still
present next to a `extension.toml`, although the former is deprecated.
We should prefer the `extension.toml` if it is present and only fall
back to the `extension.json` if needed. This PR tackles this.
Release Notes:
- N/A
This makes it possible to do login via things like `cmd: "node", args:
["my-node-file.js", "login"]`
Also, that command will now use Zed's managed `node` instance.
Release Notes:
- ACP extensions can now run terminal login commands using relative
paths
We see `test_extension_store_with_test_extension` hang in untarring the
WASI SDK some times.
In lieu of trying to debug the problem, let's try shelling out for now
in the hope that the test becomes more reliable.
There's a bit of risk here because we're using async-tar for other
things (but probably not 300Mb tar files...)
Assisted-By: Zed AI
Closes #ISSUE
Release Notes:
- N/A
Due to using anyhow here, we otherwise lose the relevant error and just
surface a fairly useless error message.
Intentionally not doing this for `extension.json` parsing since that is
deprecated.
Release Notes:
- N/A
Closes #ISSUE
Improves the efficiency of our interactions with the Zed language
server. Previously, on startup and after every workspace configuration
changed notification, we would send >1MB of JSON Schemas to the JSON
LSP. The only reason this had to happen was due to the case where an
extension was installed that would result in a change to the JSON schema
for settings (i.e. added language, theme, etc).
This PR changes the behavior to use the URI LSP extensions of
`vscode-json-language-server` in order to send the server URI's that it
can then use to fetch the schemas as needed (i.e. the settings schema is
only generated and sent when `settings.json` is opened. This brings the
JSON we send to on startup and after every workspace configuration
changed notification down to a couple of KB.
Additionally, using another LSP extension request we can notify the
server when a schema has changed using the URI as a key, so we no longer
have to send a workspace configuration changed notification, and the
schema contents will only be re-requested and regenerated if the schema
is in use.
Release Notes:
- Improved the efficiency of communication with the builtin JSON LSP.
JSON Schemas are no longer sent to the JSON language server in their
full form. If you wish to view a builtin JSON schema in the language
server info tab of the language server logs (`dev: open language server
logs`), you must now use the `editor: open url` action with your cursor
over the URL that is sent to the server.
- Made it so that Zed urls (`zed://...`) are resolved locally when
opened within the editor instead of being resolved through the OS. Users
who could not previously open `zed://*` URLs in the editor can now do so
by pasting the link into a buffer and using the `editor: open url`
action (please open an issue if this is the case for you!).
---------
Co-authored-by: Michael <michael@zed.dev>
std commands can block for an arbitrary duration and so runs risk of
blocking tasks for too long. This replaces all such uses where sensible
with async processes.
Release Notes:
- N/A *or* Added/Fixed/Improved ...
Closes https://github.com/zed-industries/zed/issues/38690Closes#37353
### Background
On Windows, paths are normally separated by `\`, unlike mac and linux
where they are separated by `/`. When editing code in a project that
uses a different path style than your local system (e.g. remoting from
Windows to Linux, using WSL, and collaboration between windows and unix
users), the correct separator for a path may differ from the "native"
separator.
Previously, to work around this, Zed converted paths' separators in
numerous places. This was applied to both absolute and relative paths,
leading to incorrect conversions in some cases.
### Solution
Many code paths in Zed use paths that are *relative* to either a
worktree root or a git repository. This PR introduces a dedicated type
for these paths called `RelPath`, which stores the path in the same way
regardless of host platform, and offers `Path`-like manipulation APIs.
RelPath supports *displaying* the path using either separator, so that
we can display paths in a style that is determined at runtime based on
the current project.
The representation of absolute paths is left untouched, for now.
Absolute paths are different from relative paths because (except in
contexts where we know that the path refers to the local filesystem)
they should generally be treated as opaque strings. Currently we use a
mix of types for these paths (std::path::Path, String, SanitizedPath).
Release Notes:
- N/A
---------
Co-authored-by: Cole Miller <cole@zed.dev>
Co-authored-by: Piotr Osiewicz <24362066+osiewicz@users.noreply.github.com>
Co-authored-by: Peter Tripp <petertripp@gmail.com>
Co-authored-by: Smit Barmase <heysmitbarmase@gmail.com>
Co-authored-by: Lukas Wirth <me@lukaswirth.dev>
This PR removes the `/docs` slash command.
We never fully shipped this—with it requiring explicit opt-in via a
setting—and it doesn't seem like the feature is needed in an agentic
world.
Release Notes:
- Removed the `/docs` slash command.
Fixes an issue that caused Windows to fail when removing extension's
directories, as Zed had never stop any related processes.
Now:
* Zed shuts down and waits until the end when the language servers are
shut down
* Adds `impl Drop for WasmExtension` where does
`self.tx.close_channel();` to stop a receiver loop that holds the "lock"
on the extension's work dir.
The extension was dropped, but the channel was not closed for some
reason.
* Does more unregistration to ensure `Arc<WasmExtension>` with the `tx`
does not leak further
* Tidies up the related errors which had never reported a problematic
path before
Release Notes:
- N/A
---------
Co-authored-by: Smit Barmase <heysmitbarmase@gmail.com>
Co-authored-by: Smit <smit@zed.dev>
Closes#33039
This PR fixes a bug which causes the newest versions of the Biome and
Tombi extensions to not work with older Zed versions.
The bug occurs because in #32822, the type of the debug adapter and
debug locators was changed from a Vec to a BTreeMap. However, these
fields were already introduced much earlier in Zed, which now causes the
de-serialization of the `extension.toml` to fail for older Zed versions.
Any extension compiled with the newest extension CLI bumped in
https://github.com/zed-industries/extensions/pull/2866 will not work
with older Zed versions prior to v0.191.
By adding this change and bumping the extension CLI again, this could be
prevented. On de-serialization, we would just fallback to either a Vec
for versions prior to v0.190 or a BTreeMap after. Feel free to let me
know what you think here.
Release Notes:
- N/A
We'll now clean up DAP locators for unloaded extensions and load schemas
proper
I can now load a custom Ruby extensions with all bells and whistles and
use it as my debugger.
Release Notes:
- N/A
- DAP schemas will be stored in `debug_adapters_schemas` subdirectory in
extension work dir.
- Added Debug Config integration and such.
Release Notes:
- N/A
Cleans things up now that wasm32-wasip2 is a supported target.
Before we merge, I will need to test against the current extensions to
make sure this is fine.
However, since our wit world isn't using any wasi package imports, this
shouldn't be a breaking change.
Release Notes:
- N/A
We now actually call dap_schema provided by extensions instead of
defaulting to a null `serde_json::Value`. We still need to update the
Json LSP whenever a new dap is installed.
Release Notes:
- N/A
This PR allows DAPs to define their own schema so users can see
completion items when editing their debug.json files.
Users facing this aren’t the biggest chance, but behind the scenes, this
affected a lot of code because we manually translated common fields from
Zed's config format to be adapter-specific. Now we store the raw JSON
from a user's configuration file and just send that.
I'm ignoring the Protobuf CICD error because the DebugTaskDefinition
message is not yet user facing and we need to deprecate some fields in
it.
Release Notes:
- debugger beta: Show completion items when editing debug.json
- debugger beta: Breaking change, debug.json schema now relays on what
DAP you have selected instead of always having the same based values.
---------
Co-authored-by: Remco Smits <djsmits12@gmail.com>
Co-authored-by: Cole Miller <m@cole-miller.net>
Co-authored-by: Cole Miller <cole@zed.dev>
https://github.com/zed-industries/zed/issues/30972 brought up another
case where our context is not enough to track the actual source of the
issue: we get a general top-level error without inner error.
The reason for this was `.ok_or_else(|| anyhow!("failed to read HEAD
SHA"))?; ` on the top level.
The PR finally reworks the way we use anyhow to reduce such issues (or
at least make it simpler to bubble them up later in a fix).
On top of that, uses a few more anyhow methods for better readability.
* `.ok_or_else(|| anyhow!("..."))`, `map_err` and other similar error
conversion/option reporting cases are replaced with `context` and
`with_context` calls
* in addition to that, various `anyhow!("failed to do ...")` are
stripped with `.context("Doing ...")` messages instead to remove the
parasitic `failed to` text
* `anyhow::ensure!` is used instead of `if ... { return Err(...); }`
calls
* `anyhow::bail!` is used instead of `return Err(anyhow!(...));`
Release Notes:
- N/A
Precursor to other optimizations, but this already gets us a big
improvement.
Wasm compilation can easily be parallelized, and with all of the cores
on my M4 Max this already gets us an 86% improvement, bringing loading
an extension down to <9ms.
Not all setups will see this much improvement, but it will use the cores
available (it just uses rayon under the hood like we do elsewhere).
Since we load extensions in sequence, this should have a nice impact for
users with a lot of extensions.
#### Before
```
Benchmarking load: Warming up for 3.0000 s
Warning: Unable to complete 100 samples in 5.0s. You may wish to increase target time to 6.5s, or reduce sample count to 70.
load time: [64.859 ms 64.935 ms 65.027 ms]
Found 8 outliers among 100 measurements (8.00%)
2 (2.00%) low mild
3 (3.00%) high mild
3 (3.00%) high severe
```
#### After
```
load time: [8.8685 ms 8.9012 ms 8.9344 ms]
change: [-86.347% -86.292% -86.237%] (p = 0.00 < 0.05)
Performance has improved.
Found 2 outliers among 100 measurements (2.00%)
2 (2.00%) high mild
```
Release Notes:
- N/A
Marshall Bowers