## Context / Related PRs This PR is the third part of the encoding
support improvements, following:
- #44819: Introduced initial legacy encoding support (Shift-JIS, etc.).
- #45243: Fixed UTF-16 saving behavior and improved binary detection.
## Summary
This PR implements a status bar item that displays the character
encoding of the active buffer (e.g., `UTF-8`, `Shift_JIS`). It provides
visibility into the file's encoding and indicates the presence of a Byte
Order Mark (BOM).
## Features
- **Encoding Indicator**: Displays the encoding name in the status bar.
- **BOM Support**: Appends `(BOM)` to the encoding name if a BOM is
detected (e.g., `UTF-8 (BOM)`).
- **Configuration**: The active_encoding_button setting in status_bar
accepts "enabled", "disabled", or "non_utf8". The default is "non_utf8",
which displays the indicator for all encodings except standard UTF-8
(without BOM).
- **Settings UI**: Provides a dropdown menu in the Settings UI to
control this behavior.
- **Documentation**: Updated `configuring-zed.md` and
`visual-customization.md`.
## Implementation Details
- Created `ActiveBufferEncoding` component in
`crates/encoding_selector`.
- The click handler for the button is currently a **no-op**.
Implementing the functionality to reopen files with a specific encoding
has potential implications for real-time collaboration (e.g., syncing
buffer interpretation across peers). Therefore, this PR focuses strictly
on the visualization and configuration aspects to keep the scope simple
and focused.
- Updated schema and default settings to include
`active_encoding_button`.
## Screenshots
<img width="487" height="104" alt="image"
src="https://github.com/user-attachments/assets/041f096d-ac69-4bad-ac53-20cdcb41f733"
/>
<img width="454" height="99" alt="image"
src="https://github.com/user-attachments/assets/ed76daa2-2733-484f-bb1f-4688357c035a"
/>
## Configuration
To hide the button, add the following to `settings.json`:
```json
"status_bar": {
"active_encoding_button": "disabled"
}
```
- **enabled**: Always show the encoding.
- **disabled**: Never show the encoding.
- **non_utf8**: Shows for non-UTF-8 encodings and UTF-8 with BOM. Only
hides for standard UTF-8 (Default).
<img width="1347" height="415" alt="image"
src="https://github.com/user-attachments/assets/7f4f4938-3320-4d21-852c-53ee886d9a44"
/>
## Heuristic Limitations:
The underlying detection logic (implemented in #44819 and #45243)
prioritizes UTF-8 opening performance and does not guarantee perfect
detection for all encodings. We consider this margin of error
acceptable, similar to the behavior seen in VS Code. A future "Reopen
with Encoding" feature would serve as the primary fallback for any
misdetections.
Release Notes:
- Added a status bar item to display the active file's character encoding (e.g. `UTF-16`). This shows for non-utf8 files by default and can be configured with `{"status_bar":{"active_encoding_button":"disabled|enabled|non_utf8"}}`
## Summary
Addresses #16965
This PR adds support for **opening and saving** files with legacy
encodings (non-UTF-8).
Previously, Zed failed to open files encoded in Shift-JIS, EUC-JP, Big5,
etc., displaying a "Could not open file" error screen. This PR
implements automatic encoding detection upon opening and ensures the
original encoding is preserved when saving.
## Implementation Details
1. **Worktree (Loading)**:
* Updated `load_file` to use `chardetng` for automatic encoding
detection.
* Files are decoded to UTF-8 internal strings for editing, while
preserving the detected `Encoding` metadata.
2. **Language / Buffer**:
* Added an `encoding` field to the `Buffer` struct to store the detected
encoding.
3. **Worktree (Saving)**:
* Updated `write_file` to accept the stored encoding.
* **Performance Optimization**:
* **UTF-8 Path**: Uses the existing optimized `fs.save` (streaming
chunks directly from Rope), ensuring no performance regression for the
vast majority of files.
* **Legacy Encoding Path**: Implemented a fallback that converts the
Rope to a contiguous `String/Bytes` in memory, re-encodes it to the
target format (e.g., Shift-JIS), and writes it to disk.
* *Note*: This fallback involves memory allocation, but it is necessary
to support legacy encodings without refactoring the `fs` crate's
streaming interfaces.
## Changes
- `crates/worktree`:
- Add dependencies: `encoding_rs`, `chardetng`.
- Update `load_file` to detect encoding and decode content.
- Update `write_file` to handle re-encoding on save.
- `crates/language`: Add `encoding` field and accessors to `Buffer`.
- `crates/project`: Pass encoding information between Worktree and
Buffer.
- `crates/vim`: Update `:w` command to use the new `write_file`
signature.
## Verification
I validated this manually using a Rust script to generate test files
with various encodings.
**Results:**
* ✅ **Success (Opened & Saved correctly):**
* **Japanese:** `Shift-JIS` (CP932), `EUC-JP`, `ISO-2022-JP`
* **Chinese:** `Big5` (Traditional), `GBK/GB2312` (Simplified)
* **Western/Unicode:** `Windows-1252` (CP1252), `UTF-16LE`, `UTF-16BE`
* ⚠️ **limitations (Detection accuracy):**
* Some specific encodings like `KOI8-R` or generic `Latin1` (ISO-8859-1)
may partially display replacement characters (`?`) depending on the file
content length. This is a known limitation of the heuristic detection
library (`chardetng`) rather than the saving logic.
Release Notes:
- Added support for opening and saving files with legacy encodings
(Shift-JIS, Big5, etc.)
---------
Co-authored-by: CrazyboyQCD <53971641+CrazyboyQCD@users.noreply.github.com>
Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>
Since the rule is no longer a `style` lint as of
[mid-August](https://github.com/rust-lang/rust-clippy/pull/15454), the
comment mentioning it not being one is outdated and should be removed.
> [!NOTE]
> I kept the severity at `error` for now to avoid rustling feathers.
> If `warn` is preferred, feel free to change it yourself or ask me to
do it - it's only 1 line of code, after all.
Release Notes:
- N/A
🔜
TODO:
- [x] Add a utility pane to the left and right edges of the workspace
- [x] Add a maximize button to the left and right side of the pane
- [x] Add a new agents pane
- [x] Add a feature flag turning these off
POV: You're working agentically
<img width="354" height="606" alt="Screenshot 2025-12-13 at 11 50 14 PM"
src="https://github.com/user-attachments/assets/ce5469f9-adc2-47f5-a978-a48bf992f5f7"
/>
Release Notes:
- N/A
---------
Co-authored-by: Nathan Sobo <nathan@zed.dev>
Co-authored-by: Zed <zed@zed.dev>
Closes https://github.com/zed-industries/zed/issues/39056
Leverages a new `await_on_background` API that spawns the future on the
background but blocks the current task, allowing to borrow from the
surrounding scope.
Release Notes:
- N/A *or* Added/Fixed/Improved ...
This PR restructures the commands of the Edit Prediction CLI (now called
`ep`), to support some flows that are important for the training
process:
* generating zeta2 prompt and expected output, without running
predictions
* scoring outputs that are generated by a system other than the
production code (to evaluate the model during training)
To achieve this, we've restructured the CLI commands so that they all
take as input, and produce as output, a consistent, uniform data format:
a set of one or more `Example` structs, expressible either as the
original markdown format, or as a JSON lines. The `Example` struct
starts with the basic fields that are in human-readable eval format, but
contain a number of optional fields that are filled in by different
steps in the processing pipeline (`context`, `predict`, `format-prompt`,
and `score`).
### To do
* [x] Adjust the teacher model output parsing to use the full buffer
contents
* [x] Move udiff to cli
* [x] Align `format-prompt` with Zeta2's production code
* [x] Change score output to assume same provider
* [x] Move pretty reporting to `eval` command
* [x] Store cursor point in addition to cursor offset
* [x] Rename `edit_prediction_cli2` -> `edit_prediction_cli` (nuke the
old one)
Release Notes:
- N/A
---------
Co-authored-by: Oleksiy Syvokon <oleksiy@zed.dev>
Co-authored-by: Agus Zubiaga <agus@zed.dev>
Co-authored-by: Ben Kunkle <ben@zed.dev>
This PR partially implements a knowledge distillation data pipeline.
`zeta distill` gets a dataset of chronologically ordered commits and
generates synthetic predictions with a teacher model (one-shot Claude
Sonnet).
`zeta distill --batches cache.db` will enable Message Batches API. Under
the first run, this command will collect all LLM requests and upload a
batch of them to Anthropic. On subsequent runs, it will check the batch
status. If ready, it will download the result and put them into the
local cache.
Release Notes:
- N/A
---------
Co-authored-by: Piotr Osiewicz <24362066+osiewicz@users.noreply.github.com>
Co-authored-by: Ben Kunkle <ben@zed.dev>
Tracing code is not included in normal release builds
Documents how to use them in our performance docs
Only the maps and cursors are instrumented atm
# Compile times:
current main: fresh release build (cargo clean then build --release)
377.34 secs
current main: fresh debug build (cargo clean then build )
89.31 secs
tracing tracy: fresh release build (cargo clean then build --release)
374.84 secs
tracing tracy: fresh debug build (cargo clean then build )
88.95 secs
tracing tracy: fresh release build with timings (cargo clean then build
--release --features tracing)
375.77 secs
tracing tracy: fresh debug build with timings (cargo clean then build
--features tracing)
90.03 secs
Release Notes:
- N/A
---------
Co-authored-by: localcc <work@localcc.cc>
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>
Fancy regex has a max backtracking limit which defaults to 1,000,000
backtracks. This avoids spinning the CPU forever in the case that a
match is taking a long time (though does mean that some matches may be
missed).
Unfortunately the verison we depended on causes an infinite loop when
the backtracking limit is hit
(https://github.com/fancy-regex/fancy-regex/issues/137), so we got the
worse of both worlds: matches were missed *and* we spun the CPU forever.
Updating fixes this.
Excitingly regex may gain support for lookarounds
(https://github.com/rust-lang/regex/pull/1315), which will make
fancy-regex much less load bearing.
Closes#43821
Release Notes:
- Fix a bug where search regexes with look-around or backreferences
could hang
the CPU. They will now abort after a certain number of match attempts.
Uses the latest version of the SDK + schema crate. A bit painful because
we needed to move to `#[non_exhaustive]` on all of these structs/enums,
but will be much easier going forward.
Also, since we depend on unstable features, I am pinning the version so
we don't accidentally introduce compilation errors from other update
cycles.
Release Notes:
- N/A
With the merging and publishing of
https://github.com/tree-sitter/tree-sitter-bash/pull/311 , we can now go
ahead and update the version of `tree-sitter-bash` that Zed relies on to
the latest version.
Closes#42091
Release Notes:
- Improved grammar for "Shell Script"
This PR adds word/character diff for expanded diff hunks that have both
a deleted and added section, as well as a setting `word_diff_enabled` to
enable/disable word diffs per language.
- `word_diff_enabled`: Defaults to true. Whether or not expanded diff
hunks will show word diff highlights when they're able to.
### Preview
<img width="1502" height="430" alt="image"
src="https://github.com/user-attachments/assets/1a8d5b71-449e-44cd-bc87-d6b65bfca545"
/>
### Architecture
I had three architecture goals I wanted to have when adding word diff
support:
- Caching: We should only calculate word diffs once and save the result.
This is because calculating word diffs can be expensive, and Zed should
always be responsive.
- Don't block the main thread: Word diffs should be computed in the
background to prevent hanging Zed.
- Lazy calculation: We should calculate word diffs for buffers that are
not visible to a user.
To accomplish the three goals, word diffs are computed as a part of
`BufferDiff` diff hunk processing because it happens on a background
thread, is cached until the file is edited, and is only refreshed for
open buffers.
My original implementation calculated word diffs every frame in the
Editor element. This had the benefit of lazy evaluation because it only
calculated visible frames, but it didn't have caching for the
calculations, and the code wasn't organized. Because the hunk
calculations would happen in two separate places instead of just
`BufferDiff`. Finally, it always happened on the main thread because it
was during the `EditorElement` layout phase.
I used Zed's
[`diff_internal`](https://github.com/zed-industries/zed/blob/02b2aa6c50c03d3005bec2effbc9f87161fbb1e8/crates/language/src/text_diff.rs#L230-L267)
as a starting place for word diff calculations because it uses
`Imara_diff` behind the scenes and already has language-specific
support.
#### Future Improvements
In the future, we could add `AST` based word diff highlights, e.g.
https://github.com/zed-industries/zed/pull/43691.
Release Notes:
- git: Show word diff highlight in expanded diff hunks with less than 5
lines.
- git: Add `word_diff_enabled` as a language setting that defaults to
true.
---------
Co-authored-by: David Kleingeld <davidsk@zed.dev>
Co-authored-by: Cole Miller <cole@zed.dev>
Co-authored-by: cameron <cameron.studdstreet@gmail.com>
Co-authored-by: Lukas Wirth <lukas@zed.dev>
This PR adds workflows to be used for CD in extension reposiories in the
`zed-extensions` organization and updates some of the existing ones with
minor improvemts.
Release Notes:
- N/A
We've realized that a lot of the logic within an
`EditPredictionProvider` is not specific to a particular edit prediction
model / service. Rather, it is just the generic state management
required to perform edit predictions at all in Zed. We want to move to a
setup where there's one "built-in" edit prediction provider in Zed,
which can be pointed at different edit prediction models. The only logic
that is different for different models is how we construct the prompt,
send the request, and parse the output.
This PR also changes the behavior of the staff-only `zeta2` feature flag
so that in only gates your *ability* to use Zeta2, but you can still use
your local settings file to choose between different edit prediction
models/services: zeta1, zeta2, and sweep.
This PR also makes zeta1's outcome reporting and prediction-rating
features work with all prediction models, not just zeta1.
To do:
* [x] remove duplicated logic around sending cloud requests between
zeta1 and zeta2
* [x] port the outcome reporting logic from zeta to zeta2.
* [x] get the "rate completions" modal working with all EP models
* [x] display edit prediction diff
* [x] show edit history events
* [x] remove the original `zeta` crate.
Release Notes:
- N/A
---------
Co-authored-by: Agus Zubiaga <agus@zed.dev>
Co-authored-by: Ben Kunkle <ben@zed.dev>
Also tidies up error notifications so that in the case of syntax errors
we don't see noise about the migration failing as well.
Release Notes:
- Invalid values in settings files will no longer prevent the rest of
the file from being parsed.
Calloop (used by our linux executor) was running all futures regardless
of how long they take. Unfortunaly some of our futures are rather busy
and take a while (>10ms).
Running all of them froze the editor for multiple seconds or even
minutes when opening a large project diff (git reset HEAD~2000 in
chromium for example).
Closes #ISSUE
Release Notes:
- N/A
---------
Co-authored-by: Jakub Konka <kubkon@jakubkonka.com>
I was trying to use Zed for Rust debugging on windows, but was getting
this warning in debugger console: "Could not initialize Python
interpreter - some features will be unavailable (e.g. debug
visualizers)."
As the warning suggests this led to bad debugging experience where the
variables were not visualized properly in the "Variables" panel.
After some investigation I found that the problem is that Zed silently
failed to extract all files from the debug adapter package
(https://github.com/vadimcn/codelldb/releases/download/v1.11.8/codelldb-win32-x64.vsix).
Particularly `python-lldb` folder was missing, which caused the warning.
The error occurred here:
https://github.com/zed-industries/zed/blob/87c4337e1adf60736e70cee35efed8652d496096/crates/util/src/archive.rs#L47
And then gets ignored here:
https://github.com/zed-industries/zed/blob/87c4337e1adf60736e70cee35efed8652d496096/crates/dap/src/adapters.rs#L323-L326
The simple fix is to update `async_zip` crate to version 0.0.18 where
this issue appears to be fixed. I also added logging instead of silently
ignoring the error, as I believe that would have helped to catch it
earlier.
To reproduce the original issue you can try to follow these steps:
0. (Optional) Remove/rename old codelldb adapter at
`%localappdata%\Zed\debug_adapters\CodeLLDB`. Restart Zed.
1. Create a simple Rust project. Make sure you use gnu toolchain (target
`x86_64-pc-windows-gnu`)
```rust
fn world() -> String {
"world".into()
}
fn main() {
let w = world();
println!("hello {}", w);
}
```
2. Put a breakpoint on line 7 (`println`)
3. In the command palette choose "debugger: start" and then select "run
*crate name*"
Screenshot before the fix:
<img width="893" height="411" alt="image"
src="https://github.com/user-attachments/assets/78097690-b55e-4989-bfa4-20452560f9fc"
/>
<details>
<summary>Console before the fix</summary>
```
Checking latest version of CodeLLDB...
Downloading from https://github.com/vadimcn/codelldb/releases/download/v1.11.8/codelldb-win32-x64.vsix...
Download complete
Could not initialize Python interpreter - some features will be unavailable (e.g. debug visualizers).
Console is in 'commands' mode, prefix expressions with '?'.
warning: (x86_64) D:\repro\target\x86_64-pc-windows-gnu\debug\repro.exe unable to locate separate debug file (dwo, dwp). Debugging will be degraded.
Launching: D:\repro\target\x86_64-pc-windows-gnu\debug\repro.exe
Launched process 13836 from 'D:\repro\target\x86_64-pc-windows-gnu\debug\repro.exe'
error: repro.exe [0x0000000000002074]: DIE has DW_AT_ranges(DW_FORM_sec_offset 0x000000000000001a) attribute, but range extraction failed (invalid range list offset 0x1a), please file a bug and attach the file at the start of this error message
error: repro.exe [0x000000000000208c]: DIE has DW_AT_ranges(DW_FORM_sec_offset 0x0000000000000025) attribute, but range extraction failed (invalid range list offset 0x25), please file a bug and attach the file at the start of this error message
error: repro.exe [0x00000000000020af]: DIE has DW_AT_ranges(DW_FORM_sec_offset 0x0000000000000030) attribute, but range extraction failed (invalid range list offset 0x30), please file a bug and attach the file at the start of this error message
error: repro.exe [0x00000000000020c4]: DIE has DW_AT_ranges(DW_FORM_sec_offset 0x000000000000003b) attribute, but range extraction failed (invalid range list offset 0x3b), please file a bug and attach the file at the start of this error message
error: repro.exe [0x00000000000020fc]: DIE has DW_AT_ranges(DW_FORM_sec_offset 0x0000000000000046) attribute, but range extraction failed (invalid range list offset 0x46), please file a bug and attach the file at the start of this error message
error: repro.exe [0x0000000000002130]: DIE has DW_AT_ranges(DW_FORM_sec_offset 0x0000000000000046) attribute, but range extraction failed (invalid range list offset 0x46), please file a bug and attach the file at the start of this error message
> ? w
< {...}
```
</details>
Screenshot after the fix:
<img width="634" height="295" alt="image"
src="https://github.com/user-attachments/assets/67e36a64-97d2-406c-9216-7ac5b01f4101"
/>
<details>
<summary>Console after the fix</summary>
```
Checking latest version of CodeLLDB...
Downloading from https://github.com/vadimcn/codelldb/releases/download/v1.11.8/codelldb-win32-x64.vsix...
Download complete
Console is in 'commands' mode, prefix expressions with '?'.
Loading Rust formatters from C:\Users\Vasyl\.rustup\toolchains\1.91.1-x86_64-pc-windows-msvc\lib/rustlib/etc
warning: (x86_64) D:\repro\target\x86_64-pc-windows-gnu\debug\repro.exe unable to locate separate debug file (dwo, dwp). Debugging will be degraded.
Launching: D:\repro\target\x86_64-pc-windows-gnu\debug\repro.exe
Launched process 10364 from 'D:\repro\target\x86_64-pc-windows-gnu\debug\repro.exe'
error: repro.exe [0x0000000000002074]: DIE has DW_AT_ranges(DW_FORM_sec_offset 0x000000000000001a) attribute, but range extraction failed (invalid range list offset 0x1a), please file a bug and attach the file at the start of this error message
error: repro.exe [0x000000000000208c]: DIE has DW_AT_ranges(DW_FORM_sec_offset 0x0000000000000025) attribute, but range extraction failed (invalid range list offset 0x25), please file a bug and attach the file at the start of this error message
error: repro.exe [0x00000000000020af]: DIE has DW_AT_ranges(DW_FORM_sec_offset 0x0000000000000030) attribute, but range extraction failed (invalid range list offset 0x30), please file a bug and attach the file at the start of this error message
error: repro.exe [0x00000000000020c4]: DIE has DW_AT_ranges(DW_FORM_sec_offset 0x000000000000003b) attribute, but range extraction failed (invalid range list offset 0x3b), please file a bug and attach the file at the start of this error message
error: repro.exe [0x00000000000020fc]: DIE has DW_AT_ranges(DW_FORM_sec_offset 0x0000000000000046) attribute, but range extraction failed (invalid range list offset 0x46), please file a bug and attach the file at the start of this error message
error: repro.exe [0x0000000000002130]: DIE has DW_AT_ranges(DW_FORM_sec_offset 0x0000000000000046) attribute, but range extraction failed (invalid range list offset 0x46), please file a bug and attach the file at the start of this error message
> ? w
< "world"
```
</details>
This fixes#33753
Release Notes:
- util: Fixed archive::extract_zip failing to extract some archives
This enables optimizations for our own proc-macros as well as some heavy
hitters. Additionally this gates the `derive_inspector_reflection` to be
skipped for rust-analyzer as it currently slows down rust-analyzer way
too much
Release Notes:
- N/A *or* Added/Fixed/Improved ...
Closes#40888
This updates runtimed to the latest version, which handles the
"starting" variant of `execution_state`. It actually handles a bunch of
other variants that are not documented in the protocol (see
https://jupyter-client.readthedocs.io/en/stable/messaging.html#kernel-status),
like "starting", "terminating", etc. I added implementations for these
variants as well.
Release Notes:
- Fixed issue that prevented the Ark kernel from working in Zed
(#40888).
---------
Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>
This is an in-progress work on changing how task scheduler affects
performance of project search. Instead of relying on tasks being
executed at a discretion of the task scheduler, we want to experiment
with having a set of "agents" that prioritize driving in-progress
project search matches to completion over pushing the whole thing to
completion. This should hopefully significantly improve throughput &
latency of project search.
This PR has been reverted previously in #40831.
Release Notes:
- Improved project search performance in local projects.
---------
Co-authored-by: Smit Barmase <smit@zed.dev>
Co-authored-by: Smit Barmase <heysmitbarmase@gmail.com>
- Updated `blame_ui.rs`, `branch_picker.rs`, `commit_tooltip.rs`, and
`commit_view.rs` to replace the previous timestamp formatting with
`chrono` for better accuracy in local time representation.
- Introduced `chrono::Local::now().offset().local_minus_utc()` to obtain
the local offset for timestamp formatting.
Closes#40878
Release Notes:
- Improved timestamp handling in various Git UI components for enhanced
user experience.
To help make our GitHub Actions easier to understand, we're planning to
split the existing `ci.yml` into three separate workflows:
* run_bundling.yml (this PR)
* run_tests.yml
* make_release.yml
To avoid the duplication that this might otherwise cause, we're planning
to write the workflows with gh-workflow, and use rust instead of
encoding logic in YAML conditions.
Release Notes:
- N/A
---------
Co-authored-by: Ben Kunkle <ben@zed.dev>
Ichimura Tomoo