Summary

Currently when you open a file and it has been deleted or you open a read-only file, we append the text to the editor tab to indicate this:

This can get busy when you have a lot of tabs open, especially with long names. This issue aims to explore a few different ways that we can visualize this.

Concepts

Option A

One idea is to try and use different seti file icons for this and show the information via tooltip:

Alternatively, we could use codicons to display instead of seti:

Option B

We could use our info icon for read-only and error for deleted:

Option C

Or we simply rely on the decorators to indicate it, we'd need to figure out how to show read-only:

cc @bpasero