Multibuffers: go to definition no longer works

[silvenon]

Check for existing issues

• Completed

Describe the bug / provide steps to reproduce it

Unlike #16619, which reports that going to definition doesn't work at all, I'm experiencing a lack of a different functionality which used to work — going to definition straight from the multibuffer, which was a killer feature 🔥

Now in order to go to the defintion I first have to open the file, and then going to defintion will work.

I'm using TypeScript and TSX.

Zed Version and System Specs

Zed: v0.167.2 (Zed)
OS: macOS 15.2.0
Memory: 16 GiB
Architecture: aarch64

If applicable, add screenshots or screencasts of the incorrect state / behavior

In Vim mode using g d inside of these import statements used to work straight from the multibuffer, but for a while now it doesn't anymore.

[baldwindavid]

Yeah, same here in elixir. A given excerpt has to be open in another tab in order for go to definition and even hover to work within the excerpt.

[filipwiech]

CC @osiewicz, might be a side effect of #21787 (not sure if intended or not)? 🤔

[osiewicz]

Yup @filipwiech , you're spot on - it is most likely an unintended consequence of this PR; we should also send out "DidOpen" notification when the user selects something within the excerpt - right now we only do it when an excerpt is edited.