Release Notes:

- N/A

Also standardizes the list format in the prompt

Release Notes:

- N/A

Allows for the acp adapter to use terminal auth for this as well

Release Notes:

- N/A

Also ensured that we clear only the highlights of the current view
(which probably would have been the the case almost always anyway).

Release Notes:

- Fixed a small issue where highlights of the syntax tree view would
persist after the view was closed.

Release Notes:

- N/A

The client has not yet setup its own side of things so the message will
always error as being unhandled anyways.

Release Notes:

- N/A *or* Added/Fixed/Improved ...

Reverts zed-industries/zed#47599

The link here was intentional and linking to a file within GPUI, hence
reverting.

Release Notes: 

- N/A

Release Notes:

- N/A


Avoids iterating through all registered actions when looking up a single
action's schema in json_schema_store.

---------

Signed-off-by: Xiaobo Liu <cppcoffee@gmail.com>

Closes #47303 

The command quoting for `cmd` shell was first introduced (at least in
this case) in PR #41216 three months ago:

https://github.com/zed-industries/zed/blob/3d4582d4dc9145270650e12f9ce5a534b888f4a2/crates/project/src/terminals.rs#L202-L210

And a month ago, PR #42382 added command quoting for `cmd` in a
different place:

https://github.com/zed-industries/zed/blob/3d4582d4dc9145270650e12f9ce5a534b888f4a2/crates/util/src/shell.rs#L413-L434

As a result, the command is now quoted twice when using `cmd`. `cmd`
interprets the entire double-quoted string (e.g., ""command & args"") as
a single (invalid) executable name, and this would lead to an error like
“The system cannot find the path specified” in #47303 .

The solution is to remove the redundant manual quoting in `terminals.rs`
and rely on the centralized logic in `util/src/shell.rs`.

/cc @Veykril @reflectronic 

Release Notes:

- Fixed a bug where terminal tasks failed to start on Windows when using
`cmd.exe`.

Release Notes:

- Zed now removes older cached remote server downloads

---------

Signed-off-by: Xiaobo Liu <cppcoffee@gmail.com>

`compare_hunks` was emitting an incorrectly small range for
`base_text_byte_range` in some cases.

Release Notes:

- N/A

Release Notes:

- N/A

---------

Co-authored-by: Zed Zippy <234243425+zed-zippy[bot]@users.noreply.github.com>

Release Notes:

- N/A

Release Notes:

- N/A

---------

Co-authored-by: Zed Zippy <234243425+zed-zippy[bot]@users.noreply.github.com>

Building project tests takes 6.5s instead of 18s that way.

Release Notes:

- N/A

---------

Co-authored-by: Zed Zippy <234243425+zed-zippy[bot]@users.noreply.github.com>

old link redirects to a non-existing page showing '404 - page not
found', probably referring to `src/_ownership_and_data_flow.rs`. anyway
I put the official article link

Release Notes:
- N/A

## Summary

Fixes #47540 - Anthropic Claude models not appearing in GitHub Copilot
Chat model picker.

## Problem

Users reported that Anthropic Claude models (Claude Sonnet 4, Claude
Opus 4, etc.) were not appearing in the model picker when using GitHub
Copilot Chat, even though:
- The GitHub Copilot API returns these models
- The models have `model_picker_enabled: true`
- Users have valid Copilot subscriptions with access to these models

## Root Cause

The issue was in the `ModelSupportedEndpoint` enum deserialization. The
enum only defined two variants:

```rust
pub enum ModelSupportedEndpoint {
    #[serde(rename = "/chat/completions")]
    ChatCompletions,
    #[serde(rename = "/responses")]
    Responses,
}
```

Anthropic Claude models use the `/v1/messages` endpoint, which wasn't
defined. When deserializing the API response, serde failed with:

```
Error("unknown variant `/v1/messages`, expected `/chat/completions` or `/responses`")
```

Because the crate uses resilient deserialization via
`deserialize_models_skip_errors()`, the entire Claude model was silently
skipped rather than causing a hard failure. This meant users saw no
error - the models simply didn't appear.

## Solution

### 1. Added `/v1/messages` endpoint variant

```rust
pub enum ModelSupportedEndpoint {
    #[serde(rename = "/chat/completions")]
    ChatCompletions,
    #[serde(rename = "/responses")]
    Responses,
    #[serde(rename = "/v1/messages")]
    Messages,  // NEW: Anthropic models use this endpoint
    #[serde(other)]
    Unknown,   // NEW: Future-proofing for unknown endpoints
}
```

### 2. Removed incorrect `dedup_by()` call

The previous code deduplicated models by family:

```rust
.dedup_by(|a, b| a.capabilities.family == b.capabilities.family)
```

This incorrectly filtered out model variants that share the same family
(e.g., `claude-sonnet-4` and `claude-sonnet-4-thinking`). Removed this
call to preserve all model variants.

### 3. Removed unused import

Removed `use itertools::Itertools;` which was only used for the
now-removed `dedup_by()`.

## Changes

| File | Change |
|------|--------|
| `crates/copilot_chat/src/copilot_chat.rs` | Added `Messages` and
`Unknown` variants to `ModelSupportedEndpoint` enum |
| `crates/copilot_chat/src/copilot_chat.rs` | Removed `.dedup_by()` call
that incorrectly filtered models |
| `crates/copilot_chat/src/copilot_chat.rs` | Removed unused
`itertools::Itertools` import |
| `crates/copilot_chat/src/copilot_chat.rs` | Added 8 new unit tests |

## Test Coverage

Added 8 new unit tests to ensure the fix works and prevent regression:

| Test | Purpose |
|------|---------|
| `test_models_with_pending_policy_deserialize` | Verifies models with
non-"enabled" policy states deserialize correctly (they're filtered
later) |
| `test_multiple_anthropic_models_preserved` | Verifies multiple Claude
models are not incorrectly deduplicated |
| `test_models_with_same_family_both_preserved` | Verifies models
sharing the same family (e.g., thinking variants) are both preserved |
| `test_mixed_vendor_models_all_preserved` | Verifies models from
different vendors (OpenAI, Anthropic, Google) are all preserved |
| `test_model_with_messages_endpoint_deserializes` | **Critical test**:
Verifies `/v1/messages` endpoint deserializes correctly |
| `test_model_with_unknown_endpoint_deserializes` | Verifies unknown
future endpoints deserialize to `Unknown` variant |
| `test_model_with_multiple_endpoints` | Verifies models with multiple
endpoints deserialize correctly |
| `test_supports_response_method` | Verifies the `supports_response()`
method logic for endpoint routing |

### Test Results

```
running 10 tests
test tests::test_model_with_messages_endpoint_deserializes ... ok
test tests::test_model_with_multiple_endpoints ... ok
test tests::test_model_with_unknown_endpoint_deserializes ... ok
test tests::test_models_with_pending_policy_deserialize ... ok
test tests::test_models_with_same_family_both_preserved ... ok
test tests::test_mixed_vendor_models_all_preserved ... ok
test tests::test_multiple_anthropic_models_preserved ... ok
test tests::test_resilient_model_schema_deserialize ... ok
test tests::test_supports_response_method ... ok
test tests::test_unknown_vendor_resilience ... ok

test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
```

## How to Test Manually

1. Sign in to GitHub Copilot in Zed
2. Open the model picker (Agent panel → model selector dropdown)
3. Verify that Anthropic Claude models appear in the list:
   - Claude Sonnet 4
   - Claude Opus 4
   - Other Claude variants (if enabled in your GitHub Copilot settings)

## Checklist

- [x] Code compiles without errors
- [x] `./script/clippy --package copilot_chat` passes with no warnings
- [x] All unit tests pass
- [x] Change is focused on a single bug fix
- [x] No unrelated refactoring or feature additions


<img width="320" height="400" alt="Screenshot 2026-01-24 at 11 57 21 PM"
src="https://github.com/user-attachments/assets/d5e17e1b-da80-4f4d-a218-d50d35114a21"
/>


Release Notes:

- Fixed Anthropic models not appearing in the Copilot Chat model picker

---------

Co-authored-by: Piotr Osiewicz <24362066+osiewicz@users.noreply.github.com>

Closes #38168
Closes #42414

We were already using `ExitStatusExt::from_raw()` to construct an
`ExitStatus`, but we were passing in the exit code from
alacritty_terminal's `ChildExit` event. This worked fine on Windows
where `from_raw()` expects an exit code, but on Unix, `from_raw()`
([read
more](https://doc.rust-lang.org/std/os/unix/process/trait.ExitStatusExt.html#tymethod.from_raw))
expects a raw wait status from `waitpid()` and not an exit code.

When a child process was killed by a signal (e.g., SIGSEGV),
`ExitStatus::code()` returns `None` since only normal exits have an exit
code. This caused the terminal to hang because we weren't properly
detecting the exit.

One fix would have been to remove the dependency on `ExitStatus`
entirely, but using the raw wait status gives us more information, we
can now detect exit codes, signal terminations, and more.

The actual fix was upstream in `alacritty_terminal` to send the raw wait
status instead of just the exit code.

Currently using forked patch
https://github.com/zed-industries/alacritty/tree/v0.16-child-exit-patch
which is based on v0.25.1.

Upstream PR: https://github.com/alacritty/alacritty/pull/8825

Release Notes:

- Fixed terminal hanging when a child process is killed by a signal
(e.g., SIGSEGV from null pointer dereference).

Mirrors
https://github.com/zed-industries/zed/commit/3d4582d4dc9145270650e12f9ce5a534b888f4a2.
We skip setting language on the secondary diff buffer which is not
needed and will improve performance and memory usage.

Release Notes:

- Improved memory usage of large ACP thread diff multibuffers.

Fixes an issue where edits would be shown like this:

<img width="1262" height="1072" alt="image"
src="https://github.com/user-attachments/assets/f3ec865a-4bf2-423c-8465-62a54a21a882"
/>

When they should be like this:

<img width="1260" height="388" alt="image"
src="https://github.com/user-attachments/assets/ac555a25-f222-48aa-b922-0ae5b9f4e260"
/>


Release Notes:

- N/A *or* Added/Fixed/Improved ...

Release Notes:

- N/A

Closes https://github.com/zed-industries/zed/issues/33748

Release Notes:

- Windows is now supported as a target platform for SSH remoting.

---------

Co-authored-by: Lukas Wirth <me@lukaswirth.dev>

- Adds missing diagonal resize cursor mappings (NWSE/NESW) on Windows.
- Fixes `CursorStyle::ResizeUpLeftDownRight` and `ResizeUpRightDownLeft`
falling back to Arrow.

Release Notes:

- N/A

Closes [#ISSUE](https://github.com/zed-industries/zed/issues/20696)

Release Notes:

- Hide block cursor text when the cursor is within a redacted range

Screenshot:

<img width="434" height="174" alt="image"
src="https://github.com/user-attachments/assets/5d9dc140-7abe-49a8-823a-58deb0e170dc"
/>

Skipping setting the language on the git index text buffer improves
snappiness for (very) large git diff multibuffers and also significantly
lower peak and steady-state RSS. When tested on the chromium repo with
`git reset HEAD~1000` and *all* language extensions installed we notice:
* current `main`: peak RSS ~45GB, ss RSS ~39GB
* this patch: peak RSS ~30GB, ss RSS ~27GB

Release Notes:

- Improved memory usage of large git diff multibuffers.

Addressing the feedback left on a previous PR of mine:
https://github.com/zed-industries/zed/pull/46663. I feel like this is
worthy of a setting. Note, however, that this does not apply to typing
`ctrl-c` in the terminal from within the agent panel; this is purely
controlling what happens when you click on the "Stop" button in the
terminal tool call card.

Release Notes:

- Agent: Added a setting for controlling the behavior of the stop button
in the terminal tool call card (between cancelling the command to run
and the thread, or just the command).

Release Notes:

- N/A

Release Notes:

- N/A

Closes #ISSUE

Release Notes:

- N/A *or* Added/Fixed/Improved ...

---------

Co-authored-by: Zed Zippy <234243425+zed-zippy[bot]@users.noreply.github.com>

Before:
<img width="1179" height="739" alt="before"
src="https://github.com/user-attachments/assets/de594de2-ac70-40cf-8813-bb8c02e95014"
/>


After:
<img width="1009" height="696" alt="after"
src="https://github.com/user-attachments/assets/b68b9f84-7f15-4baf-99ed-a259ca07e815"
/>

Release Notes:

- Fixed struct union enum outline issues for c

Release Notes:

- N/A

Signed-off-by: Marco Mihai Condrache <52580954+marcocondrache@users.noreply.github.com>
Co-authored-by: Anthony Eid <anthony@zed.dev>
Co-authored-by: Remco Smits <djsmits12@gmail.com>

Release Notes:

- N/A

Co-authored-by: Remco Smits <djsmits12@gmail.com>
Co-authored-by: Marco Mihai Condrache <52580954+marcocondrache@users.noreply.github.com>

Release Notes:

- Improved error handling in the dev container crate to prevent panics

Before this change we'd spawn N tasks in parallel on every keystroke,
afterwards
we only allow 1 background diagnostic refresh in flight at a time.

This also fixed a bug where we'd send O(n*2) pull diagnostic requests
when
re-opening a workspace with n editors.

Co-authored-by: John Tur <john-tur@outlook.com>

Closes #ISSUE

Release Notes:

- Improved performance when a large number of files were open by making
background diagnostics more efficient

---------

Co-authored-by: John Tur <john-tur@outlook.com>

This PR adds support for refreshing LLM tokens that are "outdated"—that
is, that are missing some required claims.

Release Notes:

- Fixed some instances of authentication errors with the Zed API that
could be resolved automatically by refreshing the token.

Closes #ISSUE

Release Notes:

- Fixed conda showing up in terminal windows

This PR adds a new `needs_llm_token_refresh` helper method for checking
if the LLM token needs to be refreshed.

We were duplicating the check for the `x-zed-expired-token` header in a
number of spots, and it will be gaining an additional case soon.

Release Notes:

- N/A

Closes #47503 

I added an observer for `GlobalTheme` changes that check if the accent
colors have changed or not. I thought this was closest to the patterns
and style in the codebase. I also considered triggering a
`SettingsStore` notification on theme reload but that seemed incorrect
since the settings didn't really change, even if it would solve the
problem (as the editor already observes `SettingsStore` to detect theme
changes.

Release Notes:

- Fixed Bracket color not updating when system theme changes

Closes #46113

Release Notes:

- N/A *or* Added/Fixed/Improved ...

Before:

<img width="314" height="111" alt="image"
src="https://github.com/user-attachments/assets/8e3b6ac9-81f5-4d21-aa51-9807afe4a732"
/>



After:

<img width="314" height="111" alt="image"
src="https://github.com/user-attachments/assets/d209c38a-9105-4c4f-908e-ca0e063c0cbc"
/>


Release Notes:

- N/A

Signed-off-by: Marco Mihai Condrache <52580954+marcocondrache@users.noreply.github.com>

Release Notes:

- N/A

<img width="677" height="218" alt="Screenshot 2026-01-23 at 11 59 24 AM"
src="https://github.com/user-attachments/assets/864c706f-6f9f-44dd-a18c-509f2bed164f"
/>


When a thread is interrupted while subagents are running, the subagent
cards now show a red X icon instead of a green checkmark. This provides
clearer visual feedback that the subagent was canceled rather than
completed successfully.

The icon logic now handles three states:
- **Spinner**: when status is Pending or InProgress
- **Red X**: when status is Canceled, Failed, or Rejected  
- **Green checkmark**: when status is Completed

This matches the existing pattern used elsewhere in the codebase for
showing error states on tool calls.

(No release notes because subagents are still behind a feature flag.)

Release Notes:

- N/A

Closes #47157

This panic happened because the editor was using `window.content_mask`
to get the visible bounds, which had a negative value for its height in
some cases.

This happened for three reasons:

1. `Bounds::from_corners` returns a negative size if callers pass in
corners where `bottom_right < top_left`. I originally wanted to add
error checking to this function but didn't, because it might be better
to move the error checking higher up. For now I'm going to push a fix
and figure out a better solution later

2. `Bounds::intersect` could return negative-sized bounds when the two
bounds didn't overlap, instead of returning a zero sized bounds.

3. `Style::paint` sometimes passed invalid corner values to
`Bounds::from_corners` (where the computed bottom-right was above/left
of the top-left).

Release Notes:

- editor: Fix a crash that could happen when editor visible line height
is zero

---------

Co-authored-by: Zed Zippy <234243425+zed-zippy[bot]@users.noreply.github.com>

- **title_bar: Extract platform_title_bar from title_bar**
- **file_finder no longer depends on search and agent_servers no longer
depend on language_models**

Release Notes:

- N/A

---------

Co-authored-by: Zed Zippy <234243425+zed-zippy[bot]@users.noreply.github.com>

Release Notes:

- N/A

The rate limiter's semaphore guard was being held for the entire
duration of a turn, including during tool execution. This caused
deadlocks when subagents tried to acquire permits while parent requests
were waiting for them to complete.

## The Problem

In `run_turn_internal`, the stream (which contains the `RateLimitGuard`
holding the semaphore permit) was kept alive throughout the entire loop
iteration - including during **tool execution**:

1. Parent request acquires permit
2. Parent starts streaming, consumes response
3. Parent starts executing tools (subagents)
4. **Stream/guard still held** while tools execute
5. Subagents try to acquire permits → blocked because parent still holds
permit
6. Deadlock if all permits are held by parents waiting for subagent
children

## The Fix

Two changes were made:

1. **Drop the stream early**: Added an explicit `drop(events)` after the
stream is fully consumed but before tool execution begins. This releases
the rate limit permit so subagents can acquire it.

2. **Removed the `bypass_rate_limit` workaround**: Since the root cause
is now fixed, the bypass mechanism is no longer needed.

Note: no release notes because subagents are still feature-flagged, and
this rate limiting change isn't actually observable without them.

Release Notes:

- N/A

This PR updates the Git documentation to accurately reflect the current
UI and removes inaccuracies introduced in earlier drafts.

**Changes:**

- **Added Word Diff setting location**: The `word_diff_enabled` setting
is accessible in the Settings Editor under **Languages & Tools >
Miscellaneous**, which wasn't documented.

- **Simplified Remotes section**: Removed claims about command palette
actions for managing remotes that don't exist. The section now
accurately describes the remote selector in the Git Panel.

- **Added File History section**: Combined two paragraphs that said the
same thing.
Release Notes:

- N/A

---------

Co-authored-by: Zed Zippy <234243425+zed-zippy[bot]@users.noreply.github.com>

This PR updates the Linux install script to support installing a
specific version of Zed via the
ZED_VERSION environment variable.

- If ZED_VERSION is set, that version will be downloaded.
- If ZED_VERSION is not set, the script defaults to the latest stable
version, preserving
  existing behavior.
- Works for both Linux and macOS installs.
- Maintains compatibility with ZED_CHANNEL for preview builds.

This enhancement allows users to:
- Pin a specific Zed version for reproducible setups or CI workflows.
- Easily install older or known-good versions without manually
downloading release assets.

Usage examples:
- Install latest stable (default):
  curl -f https://zed.dev/install.sh | sh
- Install specific version:
  curl -f https://zed.dev/install.sh | ZED_VERSION=0.216.0 sh
  
  Use this — it’s correct, concise, and clearly user-facing:

Release Notes

* **Added:** Support for installing a specific Zed version via the
`ZED_VERSION` environment variable in the install script (defaults to
`latest` when unset).

Users had trouble signing in due to us relying on the Copilot::global
being set, which was never the case. We've decided to use a dedicated
LSP instance just for handling auth of Copilot Chat and other goodies.
That instance is subscribed to by local Copilot instances for projects.
When the Auth instance changes it's state, local instances are prompted
to re-check their own sign in status.

Closes #47352

Co-authored-by: dino <dinojoaocosta@gmail.com>

Release Notes:

- Fixed authentication issues with Copilot.

---------

Co-authored-by: dino <dinojoaocosta@gmail.com>
Co-authored-by: Zed Zippy <234243425+zed-zippy[bot]@users.noreply.github.com>