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 +
6e8f2d2ebe)
* 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>
Closes#47489
The search worker pool was sized as `num_cpus - 1`, which spawned zero
workers when a devcontainer exposed only 1 CPU. All search channels
closed immediately and the search yielded zero results, while file
finder and LSP symbols worked fine.
The fix ensures at least 1 worker is always spawned: `(num_cpus -
1).max(1)`. A `num_cpus` override on `TestDispatcher` and a new test
reproduce the bug with `server_cx.executor().set_num_cpus(1)`.
## Manual testing
Add a `.devcontainer/` directory to a new project with these files:
```
// docker-compose.yml
services:
dev:
image: debian:bookworm-slim
cpuset: "0"
volumes:
- ..:/workspace:cached
command: sleep infinity
```
```
// devcontainer.json
{
"name": "zed-sandbox (1 CPU)",
"dockerComposeFile": "docker-compose.yml",
"service": "dev",
"workspaceFolder": "/workspace"
}
```
Build zed and point it at the new project:
```
cargo run -p zed -- ~/Repos/zed-sandbox-project
```
Open the built-in terminal, confirm `nproc` prints `1`.
Finally, run a project search (`Cmd+Shift+F`) and search for contents
that exist in it.
Results should appear 🎉
Release Notes:
- Fixed project search returning no results in devcontainers with a
single visible CPU.
Fixes#36818
Release Notes:
- Added new `global_lsp_settings.request_timeout` setting to configure
the maximum timeout duration for LSP-related operations.
Code inspired by [prior
implementation](https://github.com/zed-industries/zed/pull/38443),
though with a few tweaks here & there (like using `serde:default` and
keeping the pre-defined constant in the LSP file).
---------
Co-authored-by: Kirill Bulatov <mail4score@gmail.com>
Co-authored-by: Kirill Bulatov <kirill@zed.dev>
Many editors such as vim and emacs support "modelines", a comment at the
beginning of the file that allows the file type to be explicitly
specified along with per-file specific settings
- The amount of configurations, style and settings mapping cannot be
handled in one go, so this opens up a lot of potential improvements.
- I left out the possiblity to have "zed" specific modelines for now,
but this could be potentially interesting.
- Mapping the mode or filetype to zed language names isn't obvious
either. We may want to make it configurable.
This is my first contribution to zed, be kind. I struggled a bit to find
the right place to add those settings. I use a similar approach as done
with editorconfig (merge_with_editorconfig). There might be better ways.
Closes#4762
Release Notes:
- Add basic emacs/vim modeline support.
Supersedes #41899, changes:
- limit reading to the first and last 1kb
- add documentation
- more variables handled
- add Arc around ModelineSettings to avoid extra cloning
- changed the way mode -> language mapping is done, thanks to
`modeline_aliases` language config
- drop vim ex: support
- made "Local Variables:" handling a separate commit, so we can drop it
easily
- various code style improvements
---------
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Co-authored-by: Claude <noreply@anthropic.com>
Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>
Follow-Up-For: #47243
Previously, we would detach tasks spawned to watch config files.
However, the task blocked on receiving a file event before checking if
the receiver for the updates channel was dropped, causing the task to
never exit. The fix here was to return the task explicitly, so that it
can be dropped instead of calling `.detach()` on it. There is definitely
a way to `select!` between the receiver being dropped and the next file
system event, but I couldn't figure it out in a reasonable amount of
time and decided it wasn't worth it.
Release Notes:
- Fixed an issue where a few file descriptors would be leaked each time
a project was closed
Follow up to https://github.com/zed-industries/zed/pull/47200, fixing an
edge case where if the heartbeat failure disconnects us we get stuck in
an unconnectable state
Release Notes:
- N/A *or* Added/Fixed/Improved ...
Release Notes:
- Opening bundled files, keymap, and local release notes now opens in
remote windows instead of opening a new local zed window
- Opening the settings files, keymap files, task files, debug files and
logs will now open within wsl windows instead of opening a new local zed
window
Closes https://github.com/zed-industries/zed/issues/34402
Release Notes:
- MCP servers can now be run on the remote server when using remote
development. This can be enabled by setting the `"remote": true`
property in the settings entry for the MCP server.
---------
Co-authored-by: localcc <kate@zed.dev>
Co-authored-by: Lukas Wirth <me@lukaswirth.dev>
## Motivation
This PR unifies the async execution infrastructure between GPUI and
other components that depend on the `scheduler` crate (such as our cloud
codebase). By having a scheduler that lives independently of GPUI, we
can enable deterministic testing across the entire stack - testing GPUI
applications alongside cloud services with a single, unified scheduler.
## Summary
This PR completes the integration of the `scheduler` crate into GPUI,
unifying async execution and enabling deterministic testing of GPUI
combined with other components that depend on the scheduler crate.
## Key Changes
### Scheduler Integration (Phases 1-5, previously completed)
- `TestDispatcher` now delegates to `TestScheduler` for timing, clock,
RNG, and task scheduling
- `PlatformScheduler` implements the `Scheduler` trait for production
use
- GPUI executors wrap scheduler executors, selecting `TestScheduler` or
`PlatformScheduler` based on environment
- Unified blocking logic via `Scheduler::block()`
### Dead Code Cleanup
- Deleted orphaned `crates/gpui/src/platform/platform_scheduler.rs`
(older incompatible version)
## Intentional Removals
### `spawn_labeled` and `deprioritize` removed
The `TaskLabel` system (`spawn_labeled`, `deprioritize`) was removed
during this integration. It was only used in a few places for test
ordering control.
cc @maxbrunsfeld @as-cii - The new priority-weighted scheduling in
`TestScheduler` provides similar functionality through
`Priority::High/Medium/Low`. If `deprioritize` is important for specific
test scenarios, we could add it back to the scheduler crate. Let me know
if this is blocking anything.
### `start_waiting` / `finish_waiting` debug methods removed
Replaced by `TracingWaker` in `TestScheduler` - run tests with
`PENDING_TRACES=1` to see backtraces of pending futures when parking is
forbidden.
### Realtime Priority removed
The realtime priority feature was unused in the codebase. I'd prefer to
reintroduce it when we have an actual use case, as the implementation
(bounded channel with capacity 1) could potentially block the main
thread. Having a real use case will help us validate the design.
## Testing
- All GPUI tests pass
- All scheduler tests pass
- Clippy clean
## Architecture
```
┌─────────────────────────────────────────────────────────────┐
│ GPUI │
│ ┌──────────────────────┐ ┌────────────────────────────┐ │
│ │ gpui::Background- │ │ gpui::ForegroundExecutor │ │
│ │ Executor │ │ - wraps scheduler:: │ │
│ │ - scheduler: Arc< │ │ ForegroundExecutor │ │
│ │ dyn Scheduler> │ └────────────┬───────────────┘ │
│ └──────────┬───────────┘ │ │
│ │ │ │
│ └──────────┬──────────────────┘ │
│ ▼ │
│ ┌───────────────────────┐ │
│ │ Arc<dyn Scheduler> │ │
│ └───────────┬───────────┘ │
│ ┌──────────────┴──────────────┐ │
│ ▼ ▼ │
│ ┌──────────────────┐ ┌────────────────────┐ │
│ │ PlatformScheduler│ │ TestScheduler │ │
│ │ (production) │ │ (deterministic) │ │
│ └──────────────────┘ └────────────────────┘ │
└─────────────────────────────────────────────────────────────┘
```
Release Notes:
- N/A
---------
Co-authored-by: Antonio Scandurra <me@as-cii.com>
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
Co-authored-by: Yara <git@yara.blue>
Co-authored-by: Zed Zippy <234243425+zed-zippy[bot]@users.noreply.github.com>
as per its documentation:
`Async` supports all networking types, as well as some OS-specific file
descriptors like timerfd and inotify.
However, do not use `Async` with types like File, Stdin, Stdout, or
Stderr because all operating systems have issues with them when put in
non-blocking mode.
Release Notes:
- N/A *or* Added/Fixed/Improved ...
This PR reworks the (still feature-gated) side-by-side diff view to use
a different approach to representing the multibuffers on the left- and
right-hand sides.
Previously, these two multibuffers used identical sets of buffers and
excerpts, and were made to behave differently by adding a new knob to
the multibuffer controlling how diffs are displayed. Specifically, the
left-hand side multibuffer would filter out the added range of each hunk
from the excerpts using a new `FilteredInsertedHunk` diff transform, and
the right-hand side would simply not show the deleted sides of expanded
hunks. This approach has some problems:
- Line numbers, and actions that navigate by line number, behaved
incorrectly for the left-hand side.
- Syntax highlighting and other features that use the buffer syntax tree
also behaved incorrectly for the left-hand side.
In this PR, we've switched to using independent buffers to build the
left-hand side. These buffers are constructed using the base texts for
the corresponding diffs, and their lifecycle is managed by `BufferDiff`.
The red "deleted" regions on the left-hand side are represented by
`BufferContent` diff transforms, not `DeletedHunk` transforms. This
means each excerpt on the left represents a contiguous slice of a single
buffer, which fixes the above issues by construction.
The tradeoff with this new approach is that we now have to manually
synchronize excerpt ranges from the right side to the left, which we do
using `BufferDiffSnapshot::row_to_base_text_row`.
Release Notes:
- N/A
---------
Co-authored-by: cameron <cameron.studdstreet@gmail.com>
Co-authored-by: HactarCE <6060305+HactarCE@users.noreply.github.com>
Co-authored-by: Miguel Raz Guzmán Macedo <miguel@zed.dev>
Co-authored-by: Anthony <anthony@zed.dev>
Co-authored-by: Cameron <cameron@zed.dev>
- **search: Make search cancellation more responsive (again)**
- **Fix project benchmarks build**
- **Less scoping and lifetimes for workers**
Related to #45300
Release Notes:
- Project search will consume less resources immediately after
cancellation.
---------
Co-authored-by: Max Brunsfeld <max@zed.dev>
Closes https://github.com/zed-industries/zed/issues/45630
Remote host location alone is not enough to distinguish between remote
worktrees: different remote projects open in different windows will have
the same remote host location and _will_ have the same `WorktreeId`.
Thus, require an associated `WorktreeStore` with all
`WorktreeId`-related trust questions, and store those IDs based on the
store key.
Release Notes:
- Fixed worktree trust handling of multiple projects on the same remote
host
Follow-up of https://github.com/zed-industries/zed/pull/44887
Trims the worktree trust mechanism to the actual `worktree`s, so now
"global", workspace-level things like `prettier`, `NodeRuntime`,
`copilot` and global MCP servers are considered as "trusted" a priori.
In the future, a separate mechanism for those will be considered and
added.
Release Notes:
- N/A
Follow-up of https://github.com/zed-industries/zed/pull/44887
This fixes remote server builds.
Additionally:
* slightly rewords workspace trust text in the security modal
* eagerly ask for worktree trust on open
Release Notes:
- N/A
Closes https://github.com/zed-industries/zed/issues/12589
Forces Zed to require user permissions before running any basic
potentially dangerous actions: parsing and synchronizing
`.zed/settings.json`, downloading and spawning any language and MCP
servers (includes `prettier` and `copilot` instances) and all
`NodeRuntime` interactions.
There are more we can add later, among the ideas: DAP downloads on
debugger start, Python virtual environment, etc.
By default, Zed starts in restricted mode and shows a `! Restricted
Mode` in the title bar, no aforementioned actions are executed.
Clicking it or calling `workspace::ToggleWorktreeSecurity` command will
bring a modal to trust worktrees or dismiss the modal:
<img width="1341" height="475" alt="1"
src="https://github.com/user-attachments/assets/4fabe63a-6494-42c7-b0ea-606abb1c0c20"
/>
Agent Panel shows a message too:
<img width="644" height="106" alt="2"
src="https://github.com/user-attachments/assets/0a4554bc-1f1e-455b-b97d-244d7d6a3259"
/>
This works on local, SSH and WSL remote projects, trusted worktrees are
persisted between Zed restarts.
There's a way to clear all persisted trust with
`workspace::ClearTrustedWorktrees`, this will restart Zed.
This mechanism can be turned off with settings:
```jsonc
"session": {
"trust_all_worktrees": true
}
```
in this mode, all worktrees will be trusted by default, allowing all
actions, but no auto trust will be persisted: hence, when the setting is
changed back, auto trusted worktrees will require another trust
confirmation.
This settings switch was added to the onboarding view also.
Release Notes:
- Introduced worktree trust mechanism, can be turned off with
`"session": { "trust_all_worktrees": true }`
---------
Co-authored-by: Matt Miller <mattrx@gmail.com>
Co-authored-by: Danilo Leal <daniloleal09@gmail.com>
Co-authored-by: John D. Swanson <swanson.john.d@gmail.com>
To do
* [x] Default to no context retrieval. Allow opting in to LSP-based
retrieval via a setting (for users in `zeta2` feature flag)
* [x] Feed this context to models when enabled
* [x] Make the zeta2 context view work well with LSP retrieval
* [x] Add a UI for the setting (for feature-flagged users)
* [x] Ensure Zeta CLI `context` command is usable
---
* [ ] Filter out LSP definitions that are too large / entire files (e.g.
modules)
* [ ] Introduce timeouts
* [ ] Test with other LSPs
* [ ] Figure out hangs
Release Notes:
- N/A
---------
Co-authored-by: Ben Kunkle <ben@zed.dev>
Co-authored-by: Agus Zubiaga <agus@zed.dev>
Closes#41521
Release Notes:
- Fixed codex web login not working on wsl remotes if no browser is
installed
Co-authored-by: Ben Brandt <benjamin.j.brandt@gmail.com>
While zed itself is not a heavy user of rayon, wasmtime is, especially
for compilation. This change is similar to the rayon default but we
halve the number of threads still so we don't spawn too many threads
overall.
Release Notes:
- N/A *or* Added/Fixed/Improved ...
Deals with https://github.com/zed-industries/zed/issues/5259
Highlights brackets with different colors based on their depth.
Uses existing tree-sitter queries from brackets.scm to find brackets,
uses theme's accents to color them.
https://github.com/user-attachments/assets/cc5f3aba-22fa-446d-9af7-ba6e772029da
1. Adds `colorize_brackets` language setting that allows, per language
or globally for all languages, to configure whether Zed should color the
brackets for a particular language.
Disabled for all languages by default.
2. Any given language can opt-out a certain bracket pair by amending the
brackets.scm like `("\"" @open "\"" @close) ` -> `(("\"" @open "\""
@close) (#set! rainbow.exclude))`
3. Brackets are using colors from theme accents, which can be overridden
as
```jsonc
"theme_overrides": {
"One Dark": {
"accents": ["#ff69b4", "#7fff00", "#ff1493", "#00ffff", "#ff8c00", "#9400d3"]
}
},
```
Release Notes:
- Added bracket colorization (rainbow brackets) support. Use
`colorize_brackets` language setting to enable.
---------
Co-authored-by: MrSubidubi <dev@bahn.sh>
Co-authored-by: Lukas Wirth <lukas@zed.dev>
Co-authored-by: MrSubidubi <finn@zed.dev>
Co-authored-by: Lukas Wirth <me@lukaswirth.dev>
Co-authored-by: Smit Barmase <heysmitbarmase@gmail.com>
This allows you to specify default_model and default_mode for ACP
extensions, e.g.
```
"auggie": {
"default_model": "gpt-5",
"default_mode": "default",
"type": "extension"
},
```
Release Notes:
- Added support for specifying settings for ACP extensions
(`default_mode`, `default_model`)
