Re: [git rebase -i] show time and author besides commit hash and message?

It is possible to change the format globally via config option
rebase.instructionFormat:

    $ git config rebase.instructionFormat "%an (%ad): %s"

The format is the same as for 'git log'. This one outputs author
name, date, and the first line of commit message.

Thanks for the prompt response!
I tried immediately, it works just as you have pointed out.

Just it seems coloring is not supported? probably because
we're inside an editor?

This option is supported since Git 2.6.

I missed it, what about including a note about this option as
part of the comment in git rebase -i? since that's the place where
people would most likely think about it?

Or are you interested in a command-line option that can change
the format on per-invocation basis? I think there isn't one.
It can be interesting to add it, but I don't think it has much
utility...

Not much, for git log I'd rather setup an alias "git la", than having to
remember various fields, colors, padding options to have a nice output.