Add V0316SeedMultiRegions, a variant of V0306 that:
1. Doesn't have an explicit NO_EDITS token
2. Doesn't use git conflict markers
3. Writes all intermediate markers
   (<|marker_3|>...<|marker_4_|>...<|marker_5|>)

This makes it simpler and hopefully more speculative decoding friendly.

[WIP] The agent found a bug that has to be validated:

The new format exposed an existing bug in prompt budget tracking:
estimate_tokens (floor division by 3) was applied independently to each
component, and the accumulated rounding errors could cause the assembled
prompt to exceed max_tokens. V0316's marker tags made the cursor section
just large enough to push the total over the 4096-token limit.

Fix the budget tracking in format_edit_history_within_budget,
format_related_files_within_budget, and assemble_fim_prompt to use
byte-level accounting internally, eliminating the rounding accumulation.
The same fix is applied to the non-seed-coder budget path in
format_prompt_with_budget_for_format.

Co-authored-by: Jakub Konka <kubkon@jakubkonka.com>

Closes #ISSUE

Before you mark this PR as ready for review, make sure that you have:
- [ ] Added a solid test coverage and/or screenshots from doing manual
testing
- [ ] Done a self-review taking into account security and performance
aspects
- [ ] Aligned any UI changes with the [UI
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)

Release Notes:

- Improve recovery of audio latency after CPU-intensive period.

Co-authored-by: Jakub Konka <kubkon@jakubkonka.com>

Fixes ZED-4YP

Sort and deduplicate anchor ranges in do_helix_select before passing
them to select_anchor_ranges. When the search wraps past the end of the
document back to the beginning, the new selection is at a lower offset
than the accumulated prior selections, producing unsorted anchors that
crash the rope cursor with 'cannot summarize backward'.


Release Notes:

- Fixed a panic in helix mode with search selecting wrapping around the
document end

When a command used an explicit register (e.g. `"_dd` or `"add`), the
subsequent dot repeat (`.`) was ignoring that register and using the
default instead.

Store the register at recording start in `recording_register_for_dot`,
persist it to `recorded_register_for_dot` when recording stops, and
restore it in `Vim::repeat` when no explicit register is supplied for
`.`. An explicit register on `.` (e.g. `"b.`) still takes precedence.

This commit also updates the dot-repeat logic to closely follow Neovim's
when using numbered registers, where each dot repeat increments the
register. For example, after using `"1p`, using `.` will repeat the
command using `"2p`, `"3p`, etc.

Closes #49867

Release Notes:

- Fixed vim's repeat . to preserve the register the recorded command
  used
- Updated vim's repeat . to increment the recorded register when using
  numbered registers

---------

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

When accepting an autocomplete suggestion with multiple active cursors
using `CMD+D`, Zed applies the primary completion edit to all cursors.
However, the overlap check for LSP `additionalTextEdits` only verifies
the replace range of the newest cursor.

If user has a cursor inside an existing import statement at the top of
the file and another cursor further down, Zed fails to detect the
overlap at the top of the file. When the user auto-completes the import
statement ends up jumbled.

This fix updates the completion logic to calculate the commit ranges for
all active cursors and passes them to the LSP store. The overlap check
now iterates over all commit ranges to ensure auto-imports are correctly
discarded if they intersect with any of the user's multi-cursor edits.

Closes https://github.com/zed-industries/zed/issues/50314

### Before


https://github.com/user-attachments/assets/8d0f71ec-37ab-4714-a318-897d9ee5e56b

### After


https://github.com/user-attachments/assets/4c978167-3065-48c0-bc3c-547a2dd22ac3

Before you mark this PR as ready for review, make sure that you have:
- [x] Added a solid test coverage and/or screenshots from doing manual
testing
- [x] Done a self-review taking into account security and performance
aspects
- [x] Aligned any UI changes with the [UI
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)

Release Notes:

- Fixed an issue where accepting an autocomplete suggestion with
multiple cursors could result in duplicated or jumbled text in import
statements.

Closes #51339

This should address issues with too new libstdc++.so on older/more
conservative distros such as RHEL9.

Release Notes:

- Relaxed requirement for libstdc++.so available on Linux distros.

Causes releases on windows to fail due to unused imports

Release Notes:

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

When the buffer is edited after the diff is computed but before staging,
anchor positions shift while diff_base_byte_range values don't. If the
primary (HEAD) hunk extends past the unstaged (index) hunk, an edit in
the extension region causes the overshoot calculation to produce an
index_end that exceeds index_text.len(), panicking in
rope::Cursor::suffix.

Fix by clamping index_end to index_text.len(). This is safe because the
computed index text is an optimistic approximation — the real staging
happens at the filesystem level via git add/git reset.

Closes ZED-5R2


Release Notes:

- Fixed a source of panics when staging diff hunks

Fixes ZED-5TR

Release Notes:

- Fixed a stack overflow when parsing deeply nested html in markdown
files

Clangd uses the "readonly" token modifier instead of "constant".
Therefore, "readonly" should be mapped to highlight constant variables
as constants.

Before:
<img width="706" height="48" alt="before"
src="https://github.com/user-attachments/assets/8cc2a310-7825-490b-b868-58ea231612fa"
/>

After:
<img width="762" height="46" alt="after"
src="https://github.com/user-attachments/assets/e271d4cd-cc59-45f9-a8b4-2885857915db"
/>

- [x] Code Reviewed
- [x] Manual QA

Release Notes:

- Added clangd readonly token modifier to semantic token rules to
highlight constant variables as constant.

Co-authored-by: ozacod <ozacod@users.noreply.github.com>

Closes #46307

Before you mark this PR as ready for review, make sure that you have:
- [ ] Added a solid test coverage and/or screenshots from doing manual
testing
- [X] Done a self-review taking into account security and performance
aspects
- [ ] Aligned any UI changes with the [UI
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)

Release Notes:

- Improved compatibility with mounted VHDs on Windows.

---------

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

Release Notes:

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

cc
https://github.com/zed-industries/zed/pull/45428#issuecomment-4060334728

Release Notes:

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

- Move archive button to the header for simplicity
- Hook up the delete button in the archive view
- Improve how titles are displayed before summary is generated
- Hook up keybinding for deleting threads in both the sidebar and
archive view

Release Notes:

- N/A

Closes #49845

Follow up on #50992

Really simple, just removing some vim commands from the filter list that
are useful enough to justify not being filtered out.

tested to make sure the changes work:
<img width="944" height="1123" alt="Screenshot 2026-03-13 at 11 23
52 PM"
src="https://github.com/user-attachments/assets/23b2db73-d0e7-413b-aef7-efe62e84b542"
/>

Before you mark this PR as ready for review, make sure that you have:
- [x] Added a solid test coverage and/or screenshots from doing manual
testing
- [x] Done a self-review taking into account security and performance
aspects
- [x] Aligned any UI changes with the [UI
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)

Release Notes:

- which-key: fixed filter list for some vim commands

There is no highlight for block quotes continued on multiple lines

Currently, the ">" on lines 2 and 3 are not highlighted in the same way
as line 1
<img width="291" height="73" alt="image"
src="https://github.com/user-attachments/assets/7a2f2e25-6ee1-40a6-8833-f06ca7ee6ba9"
/>

After this PR,
<img width="249" height="75" alt="image"
src="https://github.com/user-attachments/assets/34a2971f-8061-4d92-ac45-a8043d5d0566"
/>


for this input
```md
> abcd
>
> abcd
```

tree-sitter produces this 
```
(document [0, 0] - [3, 0]
  (section [0, 0] - [3, 0]
    (block_quote [0, 0] - [3, 0]
      (block_quote_marker [0, 0] - [0, 2])
      (paragraph [0, 2] - [1, 1]
        (inline [0, 2] - [0, 6])
        (block_continuation [1, 0] - [1, 1]))
      (block_continuation [2, 0] - [2, 2])
      (paragraph [2, 2] - [3, 0]
        (inline [2, 2] - [2, 6])))))
```

the screenshots in #43043 also show this issue

Release Notes:

- Fixed highlighting of block quotes continued over multiple lines in
markdown files

Release Notes:

- Added Mask API key input in Add LLM provider modal


<img width="427" height="430" alt="截屏2026-02-28 17 35 22"
src="https://github.com/user-attachments/assets/ae628815-f7df-4ea0-90ea-a23bbd703521"
/>

---------

Signed-off-by: Xiaobo Liu <cppcoffee@gmail.com>
Co-authored-by: Danilo Leal <daniloleal09@gmail.com>

Release Notes:

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

Currently only available for native threads.

Release Notes:

- N/A

Fixes ZED-5BZ

Release Notes:

- N/A

Closes CLO-493.

Release Notes:

- N/A

Release Notes:

- N/A

With these newer models that come with different thinking levels, it's
become more frequent to want to see what the thinking is outputting.
Thus far in Zed, the thinking block would show up automatically
collapsed and every time you wanted to see it, you had to expand it
manually. This PR changes that by making the thinking block
automatically _expanded_ instead, but as soon as it's done, it collapses
again.

Release Notes:

- Agent: Improved visibility of thinking blocks by making them
auto-expanded while in progress.

Follow up to https://github.com/zed-industries/zed/pull/51384

This PR fixes the settings UI rendering of this setting by adding a
default value and also wraps it in the feature flag (only the settings
UI rendering), given it's not widely available just yet.

Release Notes:

- N/A

Two changes to support pushing `/docs/ai/tools` into the top 10 for
"agent tools" (8,900 monthly volume, currently position 11).

**`docs/src/ai/tools.md`** — adds a concrete usage example to 7 tools:
`diagnostics`, `grep`, `fetch`, `edit_file`, `terminal`, `web_search`,
and `subagent`. Each example shows a realistic scenario rather than
restating the description.

**`docs/src/ai/external-agents.md`** — adds a single sentence
cross-linking to `tools.md` after the supported-agents intro paragraph,
for users who land on that page looking for what the built-in agent can
do.

Release Notes:

- N/A (https://tenor.com/view/ironic-star-wars-chode-gif-5274592)

Add details about how student plan differs in token usage and spend
limits

Release Notes:

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

This PR bumps the version of the GLSL extension to v0.2.1.

Release Notes:

- N/A

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

Closes #51297

On non-QWERTY layouts, all Cmd+key events are routed through the macOS
IME because `key_char` is always `None` when Cmd is held. For certain
characters (dead keys like backtick, and non-dead keys like ç), the IME
calls `insertText:` instead of `doCommandBySelector:`, consuming the
event before it reaches GPUI's keybinding system or macOS system
shortcuts.

This adds `!platform` to the IME-path condition in `handle_key_event` so
Cmd+key events bypass the IME (except when composing). GPUI handles them
if a binding matches, otherwise `performKeyEquivalent:` returns `NO` and
macOS handles them.

**This won't fully fix Cmd+backtick window cycling by itself** because
Zed's key_equivalents system maps default keybindings onto the physical
backtick key on various layouts. For example, `cmd-'`
(ToggleSelectedDiffHunks) maps to the backtick key on Spanish, `cmd-=`
(IncreaseBufferFontSize) on Scandinavian layouts, `cmd-"`
(ExpandAllDiffHunks) on German/Portuguese/Swiss, and `cmd-}`
(ActivateNextItem) on Spanish-ISO. These Zed bindings shadow the
backtick key and consume the event before macOS can cycle windows. I'd
appreciate guidance on the preferred approach to resolve these
keybinding conflicts -- IMO, Zed's default shortcuts should not be
interfering with Cmd+backtick for any layout.

Release Notes:

- Fixed Cmd+key shortcuts being consumed by the IME on non-QWERTY
keyboard layouts, preventing Zed keybindings and macOS system shortcuts
from working with special characters.

Release Notes:

- N/A

Release Notes:

- N/A

Add new page detailing the roles available for users in their
organizations.

Release Notes:

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

The GLSL language extension was missing the "task" and "mesh" path
suffixes for task and mesh shaders.
"task" and "mesh" are the official suffixes used in glslang.

Release Notes:

- N/A

Co-authored-by: MrSubidubi <finn@zed.dev>

Sigh.. The missing flag caused the wrong output to be used, resulting in
an error in the process.

Release Notes:

- N/A

This will allow us to also use the workflows for this repository, which
will especially come in handy once we revisit provider extensions.

Not perfect, as we will trigger some failed workflows for extensions
that were just added

Release Notes:

- N/A

Previously, if you wanted to have a button that contains icons on both
edges, you'd need to use a `ButtonLike` component, which takes any
children. Meanwhile, the `Button` would only take one icon, where you
could control its position through the `IconPosition` enum. This has
always felt unnecessarily limiting. So, this PR removes this limitation
by adding two new methods to the button: `start_icon` and `end_icon`.

In the meantime, I have also been bothered by the unnecessary
indirection in the `IconButton` due to the existence of the `ButtonIcon`
component. So I figured I could also completely eliminate that by adding
some of its methods directly to the `IconButton` and in the Button, just
using a regular `Icon` component.

---
## Before
```rust
Button::new("id", "Label")
    .icon(IconName::Plus)
    .icon_position(IconPosition::Start)
    .icon_size(IconSize::Small)
    .icon_color(Color::Muted)
```

## After
```rust
Button::new("id", "Label")
    .start_icon(Icon::new(IconName::Check))
    .end_icon(Icon::new(IconName::ChevronDown).size(IconSize::XSmall))
```

This should have no visual impact to the UI.

Release Notes:

- N/A

Follow up to https://github.com/zed-industries/zed/pull/51487

The PR above added the item to the menu, and this one makes the menu
item actually insert a mention crease with the branch diff. That was
missing in the previous one.

Release Notes:

- N/A

Release Notes:

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

Follow-up of https://github.com/zed-industries/zed/pull/51299

Release Notes:

- N/A

When the connection to X is broken zed will go into an infinite loop and
eat up 100% (of one core) of CPU; this change causes it to exit with an
error instead.

I encountered this behavior while running zed in
[Xephyr](https://freedesktop.org/wiki/Software/Xephyr/) for testing,
though I do sometimes terminate my X server as a way to log out or
attempt to recover from a (very) broken state, and I appreciate a
graceful exit in those situations!

Exiting in case of X server disconnect is common practice in my
observations, likely as the difficulty of recreating state stored
server-side outweighs the potential utility in attempting to recover (if
"reconnecting" to an X server is ever desired in regular usage,
[Xpra](https://xpra.org/index.html) might be able to help!).


Release Notes:

- N/A

This PR introduces the `project_panel.scrollbar.horizontal_scroll`
setting to allow users to toggle the horizontal scroll bar in the
project panel. This was Zed's design before PR #18513, and the default
behavior of VSCode (`workbench.list.horizontalScrolling`).


https://github.com/user-attachments/assets/f633f4e4-a585-4494-8f48-df77c6aca418

## Rationale

Zed's design used to be the same as the default behavior of VSCode.
I.e., no horizontal scrolling, and the view is always snapped to the
left, with long file names clipped of. If you want to see the content
that is out-of-frame, you'll need to drag the handle and expand the
project panel. This could be problematic, especially for large repos
with multiple levels of nested directories, as pointed out by issues
#5550 and #7001.

<img width="1398" height="992" alt="image"
src="https://github.com/user-attachments/assets/d86563f2-0f06-4e9e-818c-155ac45f0f56"
/>\
*VSCode's default setup, for reference.*

Then came PR #18513, which added horizontal scroll and addressed this
pain point, but users didn't have a choice. They're stuck with
horizontal scrolling always turned on. I, for instance, personally
prefer the old, VSCode-default behavior, for most projects I open are
small and don't need horizontal scrolling in the project panel. With
horizontal scrolling always turned on, I find it annoying to have my
project panel view accidentally scrolled to the middle, and I'll have to
grab my mouse and scroll it back. It's also visually redundant.

Thus, why not add an option like VSCode's
`workbench.list.horizontalScrolling` and let users choose? I'd love to
be able to, say, set a per-project override for the projects that need
horizontal scrolling, while having it disabled by default.

## Extra Notes

- I was originally thinking about using `ScrollbarAxes` from
`src/editor_settings.rs` and make the option
`project_panel.scrollbar.axes.horizontal` similar to the global editor
scrollbar settings, but this option is specific to the project panel and
it doesn't quite make sense to allow disabling vertical scrolling on the
project panel, so I added a standalone option for it instead, similar to
VSCode's `workbench.list.horizontalScrolling`.

- I went the conservative route and set horizontal scrolling to enabled
(current behavior) by default. Imo it might make more sense to disable
it by default instead, similar to VSCode, but I'll leave this for the
Zed team to decide.

- I named it `horizontal_scroll` instead of `horizontal_scrolling` to be
consistent with the adjacent setting `sticky_scroll`.

- As for tests, I don't see tests for the scrollbar, so I didn't add
any.

I'd be glad to update the PR if anything is not inline with the
project's requirements or conventions.

---

Release Notes:

- Added `project_panel.scrollbar.horizontal_scroll` setting to allow
toggling horizontal scrolling in the project panel

Signed-off-by: k4yt3x <i@k4yt3x.com>

Release Notes:

- N/A

When on a untrusted project, if one was to try and use the commit
generation functionality, the command would fail because of the `-c
diff.external` configuration provided in `GitBinary::build_command`, as
git would interpret this as `""` and try to run that command.

This `-c diff.external` is a good safeguard to have on untrusted
repositories because it prevents random commands, configured in
`.git/config` from being run. For example, if one uses `git config
diff.external "touch bananas.txt"` and then run `git diff`, a new
`bananas.txt` file would be created.

However, it was still possible to bypass this safeguard using the
following strategy:

1. Specify a custom diff for a specific file format. For example, for
markdown files, with `printf '*.md diff=pwned\n' > .gitattributes`
2. Update the command run by the `pwned` diff, for example, `git config
diff.pwned.command "touch bananas.txt"`
3. Open Zed and attempt to generate a commit message in an untrusted
repository and check that a new `bananas.txt` file was created

This is only prevented by using the `--no-ext-diff` flag on the `diff`
command, so a new `GitBinary::build_diff_command` has been introduced
which simply wraps `GitBinary::build_command` and adds the
`--no-ext-diff` flag, if necessary.

As a side-effect, this also makes it so that generating a commit message
in an untrusted repository works again, which was accidentally broken on
https://github.com/zed-industries/zed/pull/50649 .

Before you mark this PR as ready for review, make sure that you have:
- [X] Added a solid test coverage and/or screenshots from doing manual
testing
- [X] Done a self-review taking into account security and performance
aspects
- [X] Aligned any UI changes with the [UI
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)

Release Notes:

- Fixed commit message generation in untrusted repositories

This PR adds the recently introduced "branch diff" mention option to the
"Add Context" menu in the message editor:

<img width="450" height="582" alt="Screenshot 2026-03-13 at 9  58@2x"
src="https://github.com/user-attachments/assets/1f5102e7-9018-4a5b-992d-43befa55dcbe"
/>

Release Notes:

- N/A

Release Notes:

- Added an error indicator in the edit prediction menu with an error
message when the free tier limit is exceeded

This wil help with releases for extensions living this repository, which
will become more relevant once agent provider extensions are back on the
table.

Release Notes:

- N/A

Add documentation for snippets in extensions.

Feel free to change the wording or add more content. 

Before you mark this PR as ready for review, make sure that you have:
- [ ] Added a solid test coverage and/or screenshots from doing manual
testing
- [ ] Done a self-review taking into account security and performance
aspects
- [ ] Aligned any UI changes with the [UI
checklist](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist)

Release Notes:

- N/A

---------

Co-authored-by: Finn Evers <finn.evers@outlook.de>

Release Notes:

- agent: Fixed an issue where external agents would return an error
because unsupported ACP method was called

Release Notes:

- N/A

---------

Co-authored-by: cameron <cameron.studdstreet@gmail.com>
Co-authored-by: Bennet Bo Fenner <bennetbo@gmx.de>

Release Notes:

- N/A