Accepting diffs with C-y strips away subdirectories

[arejensen]

Version:

CopilotChat: Commit 16d897f
Neovim: 0.11.1

Steps to reproduce:

1. Create an empty directory
2. Create a src subdirectory within it
3. Create a main.rs inside the subdirectory created in step 2.
4. Add something to the file (I could not get CopilotChat to add anything to an empty file)
5. Open neovim in the empty directory from step 1. Tell CopilotChat (using sonnet 3.7 thinking in this case) to add something to src/main.rs
6. It should create a correct diff, something along the lines of [1] below
7. Accepting the diff with C-y inserts the diff into a new buffer named main.rs

Expected behavior:

I would expect the diff to be inserted into the main.rs file under src/

Debugging:

It seems like the changes added in commit 81754ea, addressing issue #1095, led to this behavior. Reverting the commit fixed the issue for me. Since I don't quite understand why normalization was initially added, I'm hesitant to create a pull request dealing with the issue.

[1]

[file:src/main.rs](src/main.rs) line:1-1

```rust
 fn main() {
    println!("Hello, world! 🙂");
}
```

[elijahmorg]

I am hitting this issue too. It is really frustrating.