Support for detection of (un)staged changes?

[mih]

ATM we run git diff-index without --cached. This gives us all changes. In most cases we can tell if something is staged, because a non-None gitsha property is reported.

The one (?) exception are deletions. These have no gitsha property (of course), and only a git diff-index --cached would reveal their potential unstaged nature.

This appears to be the last aspect that prevent next-status from reporting index state. Here is what this looks like in a local draft (the plus-character indicates "staged"):