'Reveal in Side Bar' confused by case-sensitive FileSystemProvider

[gjsjohnmurray]

Issue Type: Bug

1. Clone https://github.com/microsoft/vscode-extension-samples.git

2. Open fsprovider-sample folder

3. Run the 'Launch Extension' configuration

4. When the Extension Development Host window opens, use its Command Palette to run MemFS: Setup Workspace followed by MemFS: Create Files

5. In Explorer expand xyz folder and its def subfolder.

6. Doubleclick on each of these four files in sequence:
   

7. Working from left to right along the four tabs, use context menu on each in turn to invoke 'Reveal in Side Bar'
   

8. 🐛 fails to locate upper.txt in the tree. The first three work correctly.

VS Code version: Code - Insiders 1.45.0-insider (6e9a34c, 2020-04-16T05:45:56.832Z)
OS version: Windows_NT x64 10.0.18363

[gjsjohnmurray]

I have seen similar problems when my case-sensitive filesystemprovider provides a tree with two sibling folders whose names only differ in their case.

[isidorn]

@gjsjohnmurray thanks for filling this.
My guess would be that we have some assumptions about the platform we are on when we search for FileStats.
Looking at the code I see that we take the FileSystemProvide case sensitive capability into account, so not sure what is missing. Code pointer

vscode/src/vs/workbench/contrib/files/common/explorerModel.ts

Line 378 in aecef14

const ignoreCase = !this.fileService.hasCapability(resource, FileSystemProviderCapabilities.PathCaseSensitive);

@gjsjohnmurray would you maybe put a breakpoint there and check what happens when you trigger a reveal.
I can also look into ti next week if you are busy. Thanks!