add a mode that allows crecord to operate on the staging area

[calestyo]

Hey.

#52 brought me to the idea that it would indeed be nice, if crecord had a mode where it operates on the stating area.

In that mode it would show all staged changes, and unselecting any would unstage exactly these changes while keeping all others.

Cheers,
Chris.

[calestyo]

Because of your comment #52 (comment):

Maybe in addition to a --staged option (respectively --cached, e.g. git diff supports both names), it would be nice to have a 3rd mode, where all are shown, staged and unstaged changes, and all can be selected unselected.

Ideally such mode would somehow indicate, whether a line is already staged or not.

[andrewshadura]

Actually, there are already undocumented options --staged/--cached and --index. I now remember couldn’t make them do anything sensible, which is why I didn’t document them.