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Rework diff rendering to allow putting the cursor into deleted text, soft-wrapping and scrolling deleted text correctly (#22994)

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Closes #12553

* [x] Fix `diff_hunk_before`
* [x] Fix failure to show deleted text when expanding hunk w/ cursor on
second line of the hunk
* [x] Failure to expand diff hunk below the cursor.
* [x] Delete the whole file, and expand the diff. Backspace over the
deleted hunk, panic!
* [x] Go-to-line now counts the diff hunks, but it should not
* [x] backspace at the beginning of a deleted hunk deletes too much text
* [x] Indent guides are rendered incorrectly 
* [ ] Fix randomized multi buffer tests

Maybe:
* [ ] Buffer search should include deleted text (in vim mode it turns
out I use `/x` all the time to jump to the next x I can see).
* [ ] vim: should refuse to switch into insert mode if selection is
fully within a diff.
* [ ] vim `o` command when cursor is on last line of deleted hunk.
* [ ] vim `shift-o` on first line of deleted hunk moves cursor but
doesn't insert line
* [x] `enter` at end of diff hunk inserts a new line but doesn't move
cursor
* [x] (`shift-enter` at start of diff hunk does nothing)
* [ ] Inserting a line just before an expanded hunk collapses it

Release Notes:


- Improved diff rendering, allowing you to navigate with your cursor
inside of deleted text in diff hunks.

---------

Co-authored-by: Conrad <conrad@zed.dev>
Co-authored-by: Cole <cole@zed.dev>
Co-authored-by: Mikayla <mikayla@zed.dev>
Co-authored-by: Conrad Irwin <conrad.irwin@gmail.com>
Co-authored-by: Michael <michael@zed.dev>
Co-authored-by: Agus <agus@zed.dev>
Co-authored-by: João <joao@zed.dev>
This commit is contained in:
Max Brunsfeld 2025-01-24 13:18:22 -08:00 • committed by GitHub
parent 1fdae4bae0
commit d2c55cbe3d
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GPG key ID: B5690EEEBB952194
64 changed files with 7653 additions and 5495 deletions
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12
crates/assistant2/src/buffer_codegen.rs
View file

@ -255,17 +255,17 @@ impl CodegenAlternative {
) -> Self {
let snapshot = buffer.read(cx).snapshot(cx);
let (old_excerpt, _) = snapshot
let (old_buffer, _, _) = snapshot
.range_to_buffer_ranges(range.clone())
.pop()
.unwrap();
let old_buffer = cx.new_model(|cx| {
let text = old_excerpt.buffer().as_rope().clone();
let line_ending = old_excerpt.buffer().line_ending();
let language = old_excerpt.buffer().language().cloned();
let text = old_buffer.as_rope().clone();
let line_ending = old_buffer.line_ending();
let language = old_buffer.language().cloned();
let language_registry = buffer
.read(cx)
.buffer(old_excerpt.buffer_id())
.buffer(old_buffer.remote_id())
.unwrap()
.read(cx)
.language_registry();
@ -475,7 +475,7 @@ impl CodegenAlternative {
let ranges = snapshot.range_to_buffer_ranges(self.range.clone());
ranges
.first()
.and_then(|(excerpt, _)| excerpt.buffer().language())
.and_then(|(buffer, _, _)| buffer.language())
.map(|language| language.name())
};