Andrew Lygin f3192b6fa6 Fix scrollbar marker settings (#10530)
Zed displays scrollbar markers of three types: git diffs, background
highlights and diagnostics. At the moment, the "background highlights"
markers are displayed for all the supported highlights:

- Occurences of the symbol under cursor.
- Search results.
- Scope boundaries (only works when a symbol is selected).
- Active hover popover position.

They all use the same color, which leads to confusing results. For
instance, in the following case I expect to see markers for the
`new_anchor` occurences in lines 43 and 47. But besides them, there're
also scope-markers for `ScrollAnchor` initialization block in lines 46
and 49, which makes me think that there're four places where
`new_anchor` appears.

<img width="740" alt="zed-scrollbar-markers"
src="https://github.com/zed-industries/zed/assets/2101250/78700e6b-fdd1-4c2f-beff-e564d8defc13">

Existing settings `selection` and `symbol_selection` in the `scrollbar`
section [don't work as
expected](https://github.com/zed-industries/zed/pull/10080#discussion_r1552325493),
which increases confusion.

This PR only leaves two types of bg-highlight-markers and provides
dedicated settings for them:

- Occurences of the symbol under cursor. Setting: `selected_symbol`,
default is `true`.
- Search results. Setting: `search_results`, default is `true`.

The `selection` and `symbol_selection` settings are not used anymore.

Release Notes:

- Breaking changes. Settings `selection` and `symbol_selection` in the
`scrollbar` section renamed to `search_results` and `selected_symbol`
respectively. Fixed the effect of these settings on which markers are
displayed on the scrollbar.

Optionally, include screenshots / media showcasing your addition that
can be included in the release notes.

- N/A

/cc @mrnugget
2024-04-16 09:21:22 +02:00
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WIP
2023-12-14 09:25:14 -07:00
2024-04-15 14:00:56 -06:00
2024-04-12 14:18:54 +02:00

Zed

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Welcome to Zed, a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter.

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