Support Copy Permalink when inside git submodules

[notpeter]

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• Completed

Describe the bug / provide steps to reproduce it

Steps to reproduce:

1. Checkout a repo with submodules
2. Navigate to a file in a submodule
3. Right click and select "Copy Permalink"
4. Note error: "Failed to copy permalink: no permalink available"

Explicit steps:

cd ~/code
git clone [email protected]:zed-industries/extensions.git
cd extensions
git submodule init
git submodule update
zed . extensions/zed/assets/keymaps/default-linux.json

Right click and select `Copy Permalink"

Zed Version and System Specs

Zed: v0.170.0 (Zed Nightly 1b3b825)
OS: macOS 15.2.0
Memory: 64 GiB
Architecture: aarch64

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

No response

If applicable, attach your Zed.log file to this issue.

2025-01-14T15:08:37.962536-05:00 [ERROR] no permalink available
2025-01-14T15:09:21.746837-05:00 [ERROR] no permalink available
2025-01-14T15:09:27.85251-05:00 [ERROR] no permalink available
2025-01-14T15:09:41.148222-05:00 [ERROR] no permalink available

[0xtimsb]

Hey, @notpeter, in your steps to reproduce, I think you missed the .gitmodules file at the root of the project.

I have a site where the data directory is a submodule, and the copy permalink works in it.

[submodule "src/data"]
	path = src/data
	url = [email protected]:0xtimsb/site-data.git

source: here