Added some missing trait functions and `unimplemented` markings

Release Notes:

- N/A

#7363 added support for rendering strikethrough text, so now we can
handle this case in the terminal.

Should close: #7434

Before:

![image](https://github.com/zed-industries/zed/assets/53836821/cb7a4eae-5bc9-425c-974d-07a9f089917a)

After:

![image](https://github.com/zed-industries/zed/assets/53836821/5aaacee2-95bc-4039-972d-96bd7c01ea59)

Release Notes:

- Fixed rendering strikethrough text inside the terminal #7434

Release Notes:

- Fixed a panic in diagnostics with emojis

**or**

- N/A

This PR updates the various spots where we reload the theme to use
`ThemeSettings::reload_current_theme` instead of duplicating the code
each time.

Release Notes:

- N/A

```bash
cargo run -p theme_importer -- dark-plus-syntax-color-theme.json --output output.json
```

Release Notes:

- N/A

---------

Co-authored-by: Marshall Bowers <elliott.codes@gmail.com>

This is a follow up to #7170. Closing the reply to preview overlay is
now configurable with an action (keybinding set escape in the default
keymap).


https://github.com/zed-industries/zed/assets/53836821/d679e734-f90b-4490-8e79-7dfe5407988a


Release Notes:
- N/A

This PR extends the extension directory watcher to also watch and reload
themes defined in extensions.

Release Notes:

- N/A

Co-authored-by: Max <max@zed.dev>

https://github.com/zed-industries/zed/pull/7467 introduced a new
`grammar` field in the language configuration files.
The underlying tree-sitter grammar for Terraform should be `hcl` instead
of `terraform`. This PR fixes that typo.

Release Notes:

- N/A

Release Notes:

- N/A

## Motivation

I :heart: Zed! It's lightning fast and has great UX. I want it to run as
well on all major platforms. I'm currently using Linux most actively.
[Blade](https://github.com/kvark/blade) is a good candidate for
providing GPU access: it supports Vulkan, Metal, and GLES/WebGL. Its
abstraction is extremely thin, while having one of the nicest GPU APIs.
Codebase is also tiny. Checkout [the meetup
recording](https://www.youtube.com/watch?v=63dnzjw4azI&t=623s) from a
year ago.
I believe these projects make a good match :rocket: !

### Why this is a bad idea

If Zed team wants to use off-the-shelf components from Rust ecosystem,
then Blade is certainly at disadvantage here, since it's not widely
used. It would rely on Zed team adding necessary features in a branch,
then maybe upstreaming some of them. That is to say, it's unclear if
this can be avoided with more popular alternatives - being flexible with
any local changes is a good ability.

### Why it's not too bad

Blade uses [WGSL](https://www.w3.org/TR/WGSL) shaders, similar to `wgpu`
and `arcana`, but without the binding decorations. So this aspect of the
product is nicely portable.

## Progress

- [ ] Platforms
  - [x] X11 (via xcb)
    - [ ] input handling
    - [ ] get proper content size
  - [ ] Windows
  - [ ] Replace the existing Metal backend
- [ ] Text System
  - [ ] shaping
  - [ ] glyph rasterization
- [x] Texture atlas
- [ ] Rendering
  - [x] basic primitives
  - [x] path rendering
  - [x] sprite rendering
- [ ] media surfaces
- [ ] CI

## Current status
Zed starts up but crashes on text-system related checks.

![zed-linux-1](https://github.com/zed-industries/zed/assets/107301/ba536218-4d2c-43c9-ae6c-bef69b54bd0c)

This PR adds the initial support for loading extensions in Zed.

### Extensions Directory

Extensions are loaded from the extensions directory.

The extensions directory has the following structure:

```
extensions/
  installed/
    extension-a/
      grammars/
      languages/
    extension-b/
      themes/
  manifest.json
```

The `manifest.json` file is used internally by Zed to keep track of
which extensions are installed. This file should be maintained
automatically, and shouldn't require any direct interaction with it.

Extensions can provide Tree-sitter grammars, languages, and themes.

Release Notes:

- N/A

---------

Co-authored-by: Marshall <marshall@zed.dev>

Co-Authored-By: Remco Smits <62463826+RemcoSmitsDev@users.noreply.github.com>

Github usernames are allowed to contain `-`, but the autocompletion was
not working correctly.
We added `-` as an allowed character for markdown files. We are not
aware of any completions for markdown files, so this should be fine to
add.


Before:

![image](https://github.com/zed-industries/zed/assets/53836821/5b456ed6-3098-48e8-90db-f5f42b4aa535)

After:

![image](https://github.com/zed-industries/zed/assets/53836821/a544f465-0b68-46f5-9a15-83b4c755c3c0)


Release Notes:

- Fixed autocompletion for usernames with dash character in the chat
message editor

Co-authored-by: Remco Smits <62463826+RemcoSmitsDev@users.noreply.github.com>

Use the new installation procedures located at
https://ocaml.org/install.

Release Notes:
- N/A

Release Notes:

- Fixed a bug that caused the window to become unresponsive after
foregrounding.

---------

Co-authored-by: Conrad <conrad@zed.dev>

This PR changes our approach to initializing the `SystemAppearance` so
that we can do it earlier in the startup process.

Previously we were using the appearance from the window, meaning that we
couldn't initialize the value until we first opened the window.

Now we read the `window_appearance` from the `AppContext`. On macOS this
is backed by the
[`effectiveAppearance`](https://developer.apple.com/documentation/appkit/nsapplication/2967171-effectiveappearance)
on the `NSApplication`.

We currently still watch for changes to the appearance at the window
level, as the only hook I could find in the documentation is
[`viewDidChangeEffectiveAppearance`](https://developer.apple.com/documentation/appkit/nsview/2977088-viewdidchangeeffectiveappearance),
which is at the `NSView` level.

In my testing this makes it so Zed appropriately chooses the correct
light/dark theme on startup.

Release Notes:

- N/A

Co-Authored-By: Antonio <antonio@zed.dev>
Co-Authored-By: Thorsten <thorsten@zed.dev>
Co-Authored-By: Mikayla <mikayla@zed.dev>

Release Notes:

- N/A

**or**

- N/A

Co-authored-by: Antonio <antonio@zed.dev>
Co-authored-by: Thorsten <thorsten@zed.dev>
Co-authored-by: Mikayla <mikayla@zed.dev>

Reduce windows build error.

Release Notes:

- N/A

apply theme_name(fallback use "")

Release Notes:

- N/A

<img width="1269" alt="image"
src="https://github.com/zed-industries/zed/assets/18583882/d4c93033-b2ac-4ae0-8e12-457f256ee869">

Release Notes:

- Added support for styling text with strikethrough.

Related: 
- https://github.com/zed-industries/zed/issues/5364
- https://github.com/zed-industries/zed/pull/7345

Reverts zed-industries/zed#7481

This would regress performance because we'd be using the standard
library's hash maps everywhere, so reverting for now.

This highlights dead keys. Example: when in Brazilian keyboard layout
and typing `"` it's now underlined.



https://github.com/zed-industries/zed/assets/1185253/a6b65f7b-1007-473d-ab0f-5d658faa191b



Release Notes:

- Fixed dead keys not being underlined.

Co-authored-by: Antonio <antonio@zed.dev>

Previously it wasn't possible to create a keybinding for this action
because it required an argument.

Now the action takes the active item of the pane and if it's a
multi-buffer the first one.

This also adds a default keybinding for Vim mode: `-` will reveal the
file in the project panel.

Fixes #7485.

Release Notes:

- Added `pane::RevealInProjectPanel` as an action in the command
palette. ([#7485](https://github.com/zed-industries/zed/issues/7485)).

Co-authored-by: Antonio <antonio@zed.dev>

Release Notes:

- N/A

Release Notes:

- N/A

Release Notes:

- Improved Jetbrains keybindings to include cmd+alt+left/right to go
back and forwards between panes rather than the default previous / next
pane

Signed-off-by: James Gee <1285296+geemanjs@users.noreply.github.com>

* fix: avoid panics in case of non-existing path for watching

* fix: copy the themes and plugins

* Revert "add a few more libraries to the linux script"

This reverts commit 7509677003da3398d0df796eca9c5435a12f576e.

* fix: add vulkan validation layers to the system deps

* fix: fix the themes paths

Release Notes:

- N/A

This was originally just to fix
https://github.com/zed-industries/zed/issues/4354, which I did by just
returning the previous offset in `find_boundary`.. but `find_boundary`
is used in the "insert mode" / normal editor too, so returning the
previous boundary breaks existing functionality in that case.

I was considering a new `find_boundary` function just for some of the
vim motions like this, but I thought that this is straightforward enough
and future Vim functions might need similar logic too.

Release Notes:

- Fixed https://github.com/zed-industries/zed/issues/4354

Fixes: #2750
Fixes: #7457



Release Notes:

- Fixed a hang/panic that could happen rendering a double-width
character in a single-width terminal
([#2750](https://github.com/zed-industries/zed/issues/2750),
[#7457](https://github.com/zed-industries/zed/issues/7457)).

We noticed the following message in my logs when trying to debug some
lag when collaborating:

```
2024-02-06T09:42:09-08:00 [ERROR] error handling message. client_id:3, sender_id:Some(PeerId { owner_id: 327, id: 1123430 }), type:GetCompletions, error:no such connection: 0/0
```

That `0/0` looks like a bogus connection id, constructed via a derived
`Default`. We didn't ever find a code path that would *use* a default
`ConnectionId` and lead to this error, but it did seem like an
improvement to not have a `Default` for that type.

Release Notes:

- N/A

Co-authored-by: Marshall <marshall@zed.dev>

When a supporting diagnostic had an empty message, we were accidentally
giving the corresponding block a height of zero lines.

Release Notes:

- Fixed an issue where an editors' lines were not laid out correctly
when showing certain diagnostics.

Co-authored-by: Marshall <marshall@zed.dev>

Feature
- [x] Allow to click on reply to go to the real message
    - [x] In chat
- [x] Show only a part of the message that you reply to
    - [x] In chat
    - [x] In reply preview

TODO’s
- [x] Fix migration
    - [x] timestamp(in filename)
    - [x] remove the reference to the reply_message_id
- [x] Fix markdown cache for reply message
- [x] Fix spacing when first message is a reply to you and you want to
reply to that message.
- [x] Fetch message that you replied to
    - [x] allow fetching messages that are not inside the current view 
- [x] When message is deleted, we should show a text like `message
deleted` or something
    - [x] Show correct GitHub username + icon after `Replied to: `
    - [x] Show correct message(now it's hard-coded)
- [x] Add icon to reply + add the onClick logic
- [x] Show message that you want to reply to
  - [x] Allow to click away the message that you want to reply to
  - [x] Fix hard-coded GitHub user + icon after `Reply tp:`
  - [x] Add tests

<img width="242" alt="Screenshot 2024-02-06 at 20 51 40"
src="https://github.com/zed-industries/zed/assets/62463826/a7a5f3e0-dee3-4d38-95db-258b169e4498">
<img width="240" alt="Screenshot 2024-02-06 at 20 52 02"
src="https://github.com/zed-industries/zed/assets/62463826/3e136de3-4135-4c07-bd43-30089b677c0a">


Release Notes:

- Added the ability to reply to a message.
- Added highlight message when you click on mention notifications or a
reply message.

---------

Co-authored-by: Bennet Bo Fenner <53836821+bennetbo@users.noreply.github.com>
Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>

We should prefer referring to local deps via `.workspace = true` from
now on.

Release Notes:

- N/A

With upcoming release of 1.76 I did a check of current +beta (which
seems to already be at 1.77). These would cause CI pipeline failures
once 1.77 is out.

Release Notes:

- N/A

This PR improves the error handling when the `editor: copy permalink to
line` action fails.

Right now if something goes wrong nothing happens, and we don't write
anything to the logs.

This PR makes it so we display a toast when the operation fails with the
error message, as well as write it to the Zed logs.

Release Notes:

- Improved error behavior for `editor: copy permalink to line` action.

This PR removes the placeholder that we previously displayed for the
chat message editor.

With the changes in #7441 we can no longer hit this codepath.

Release Notes:

- N/A

Found this last week with @osiewicz and we realized that it's unused. So
I think it's fine to remove it, but I want to hear whether @mikayla-maki
has some thoughts here.



Release Notes:

- N/A

Turns out that Nushell doesn't like `-lic` and `&&`, but works perfectly
fine with `-l -i -c` and `;`, which the other shells do too.

These all work:

    bash -l -i -c 'echo lol; /usr/bin/env -0'
    nu -l -i -c 'echo lol; /usr/bin/env -0'
    zsh -l -i -c 'echo lol; /usr/bin/env -0'
    fish -l -i -c 'echo lol; /usr/bin/env -0'

Release Notes:

- Fixed shell environment not being loaded if Nushell was set as
`$SHELL`.

Tried to match the existing file icons in Zed as much as possible. This
is how it looks:

|  dark  | light  | 
|---|----|
| <img width="183" alt="Screenshot 2024-02-06 at 15 03 57"
src="https://github.com/zed-industries/zed/assets/43472/bd862753-41bb-4ca6-9a44-16b9b1c9591c">
| <img width="180" alt="Screenshot 2024-02-06 at 15 03 14"
src="https://github.com/zed-industries/zed/assets/43472/9df8c589-64b6-49f2-8e15-b43126579a9f">
|

The main challenge is that the tangram is visually quite heavy and
detailed. The existing icons in Zed are designed in a 14px bounding box,
but are a bit smaller themselves. I guess the extra space is reserved
for hanging elements, it probably doesn't make sense to occupy the whole
area.

Simply scaling down an available SVG of the tangram didn't work well.
The individual shapes were not recognizable because the spacing between
them was too thin. I tried removing the spacing and applying different
opacities for each shape, but that didn't yield enough contrast between
the shapes either.

The second approach was to just use the outlines. It sort of worked, but
looked a bit messy in the places when the outlines are denser than the
tangram shapes:

|  dark  | light  | 
|---|----|
| <img width="192" alt="Screenshot 2024-02-05 at 22 55 46"
src="https://github.com/zed-industries/zed/assets/43472/d0029f49-675d-40ac-96d8-788a29706bad">
| <img width="195" alt="Screenshot 2024-02-05 at 22 56 05"
src="https://github.com/zed-industries/zed/assets/43472/d2de922a-70ec-4bd1-9033-db9a5201e9bd">
|

I then tried to remove the main outline and use the maximum space for
the tangram. That let me increase the spacing between the shapes. I also
rounded them a little bit, to make them look similar to other icons from
Zed. The end result looks clean and the shapes are still recognisable.

Approaches I tried next to an existing icon from Zed:

<img width="711" alt="Screenshot 2024-02-06 at 15 15 33"
src="https://github.com/zed-industries/zed/assets/43472/a3e4b0db-4b98-4072-91e8-fe71cff19adf">


Release Notes:

- Added file type icon for Elm

This PR makes it so the chat message editor is hidden when not in an
active chat.

Release Notes:

- Changed the chat message editor to be hidden when not in an active
chat.

Add Prisma icon from https://github.com/file-icons/icons

![CleanShot 2024-02-06 at 13 17
01@2x](https://github.com/zed-industries/zed/assets/5864275/55ce9286-4e15-4125-b7f7-003e2e8d8bd5)


Release Notes:

- Added Prisma icon.