[Workaround] Uppercase UNC host names on Windows

[AnrDaemon]

Feature description or problem with existing feature
microsoft/vscode#112231
This happens because Intelephense (in particular) opens symbol definitions with UNC host lowercased, which causes brain split in VS Code, which consequently causes all sort of headache, from inability to set breakpoints in source to two Git scans running in parallel over a slow network link.

Describe the solution you'd like
Yes, this should be fixed in VS Code itself, but until then…
If you detect an UNC name, the host part should be uppercased to avoid brain splits.

Additional context
See linked issue.

[Seldaek]

Related to this, UNC paths like \\wsl$\Ubuntu-20.04\var\www\foo.php seem to be opened (by go to definition) as a relative path Ubuntu-20.04\var\www\foo.php which makes the editor (sublime text in my case) open \\wsl$\Ubuntu-20.04\var\www\Ubuntu-20.04\var\www\foo.php which clearly doesn't work as it contains some part of the path twice.

I'd be happy to look into the issue but seems like intelephense isn't quite open source?

[bmewburn]

@Seldaek Are you able to provide a trace of the definition request so I can see what the URI of the file is?

[Seldaek]

In the sublime text console I see smth like this:

Unable to open /?wsl$/Ubuntu-20.04/var/www/x/src/X/Ubuntu-20.04/var/www/x/src/X/DoctrineTrait.php

Not sure how to get you a lower level trace, but happy to give it a shot if you have instructions.

Just to be clear about my situation: I have sublime text running on windows and files stored in WSL2 filesystem.

[AnrDaemon]

Simple reproduction:

1. Install https://github.com/bmewburn/vscode-intelephense/releases/tag/v1.7.1
2. Open workspace from an UNC path.
3. Open file src\Wrappers\PDOMysql.php.
4. From class declaration, position to parent class (PDOWrapper) and call "Go to definition".
5. Check the open files. PDOWrapper.php is opened from a path that appears to be outside the ${workspaceFolder}
   

This is arguably an issue with VS Code itself, but I honestly don't know how long it would take for them to recognize it.