No git status indication in the editor tab

[JonasHelming]

VSCode colors the file name and adds an indicator on changed files, just like in the navigator. Theia IDE does not:

Additional Information

• Operating System: Ubuntu
• Theia Version: 1.45

[dhuebner]

Note:
This editor tab behavior is configurable in vs-code:
workbench.editor.decorations.badges to control marker/change indicator
workbench.editor.decorations.colors to control tab titel color

[JonasHelming]

@dhuebner Are you interested in working on this? This would be a nice addition I think.

[dhuebner]

@JonasHelming
I'm interested, yes. But to be honest I am not sure where to start investigating.
It should be a badge contribution from the git extension similar to the explorer view, but I'm not sure.
I will definitely spend some time to find it out and report my findings here.

[dhuebner]

@JonasHelming
Now I found it. Thees are tailDecorations that need to be contributed within the ScmTabBarDecorator. I need to check whether the tailDecorations are rendered in the Editors tab bar.

So yes, please assign me.

[dhuebner]

@JonasHelming
I got it working, but need to handle all contributed decoration not just SCM.
Now we can also see the problem marker tail decorations, which is good:

I opened a PR #13371