smit 1f52aab7c7 buffer: Fix panic when multi-byte character is used in languages like Swift (#25739)
Closes #25471

In languages like Swift, names can be concatinated in form like `class
Example: UI`, notice here `Example` and `:` are two different words.
Before, `name_ranges`translation of above text would look like:

```
"class" -> [0..5]
" Example" -> [5..13] (Spaces are intentional)
"e:" -> [12..14] (This is incorrect, and should be ":" -> [13..14])
" UI" -> [14..16]
```

Because this translation does not account for concatinated words, this
might affect queries, but most importantly this panics when multi-byte
character (`ф`) is used in place of `e`, as it then tries to access
index which lies inside that multi-byte. For example, it panics on
`class Examplф: UI`.

---

This PR fixes this by handing concatinated words when calculating
`name_ranges`.

Now, the corrected ranges will look like:

```
"class" -> [0..5]
" Example" -> [5..13]
":" -> [13..14] (Now it's correct)
" UI" -> [14..16]
```

and for multi-byte character

```
"class" -> [0..5]
" Examplф" -> [5..14] (Notice ф takes two bytes)
":" -> [14..15]
" UI" -> [15..17]
```

This way, it no longer tries to access a previous index, preventing a
panic when that index contains a multi-byte character.

Release Notes:

- Fixed a panic when Cyrillic characters are used in languages like
Swift.
2025-02-27 16:27:07 +05:30
2025-02-20 20:02:56 +00:00
2025-01-19 08:40:55 -05:00
WIP
2023-12-14 09:25:14 -07:00
2024-09-30 17:46:21 -04:00
2025-01-19 08:40:55 -05:00
2025-02-04 09:02:59 -05:00
2025-02-04 09:02:59 -05:00
2024-08-08 17:21:38 -07:00
2024-09-05 15:39:16 -04:00
2024-11-15 14:37:39 -05:00

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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Description
GPUI – Community Edition maintained by Oak Team
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