Why is `revert` undocumented in interactive rebase todo help?

[Michael Lohmann <mial.lohmann@gmail.com>]

Hi!
I wanted to align rebase and revert/cherry-pick a bit more (for the
latter I am currently finishing my patch for --show-current-patch and
then looked into possibly implementing --edit-todo). To avoid code
duplication I wanted to reuse the existing interactive-rebase code as
much as possible and ended up at the todo script parsing in the
sequencer. I was a bit surprised to find that the file could already
handle the command `revert`, even though it isn't documented in
`append_todo_help` of rebase-interactive.c - is that by choice or just
missing documentation?

Whenever I wanted to achieve this I used `break` and then manually did
the revert, which obviously works fine, but it is much nicer to put the
command in the todo file... (Now that I think about it I could also have
done it with `exec`, but that is also not the nicest solution :D ). The
only other command not mentioned is `noop` which is obviously not too
useful apart from distinguishing an empty list and aborting, so I
totally understand it missing.

Yes - in contrast to all the other options it does not have a single
char notation (and 'r' is obviously already taken und 'u' for undo as
well or 't' for the last letter), but why not show it in the list
without it? Or maybe add 'v' for "reVert"?

Cheers
Michael

P.S.: @Johannes Schindelin I saw your work of making the todo files in
the sequencer more reusable and the many reworks/improvements, so I
added you in cc - I hope that was alright (otherwise I'll buy you a
Kölsch as an apology ;) )...