"files" flag broken on Windows

[tarik-hamani-by]

It seems that the "files" flag is broken on Windows when it references to a file in a subfolder.

• *: works
• config.go: works
• cfg/config.go: file is ignored
• cfg\config.go: file is ignored
• cfg\\config.go: file is ignored

I was able to reproduce the issue on on the examples provided in the _example folder.

Versions used:

• Windows: 10.0.19045
• Go: 1.23.4 windows/amd64