Maybe nobody noticed because most people do not use "--from=<foo>" with
a <foo> that does not match the committer ident in the first place. I'm
not really sure why you'd want the two to differ. Which makes me wonder
why I added that feature in the first place (as opposed to just "--from"
with no options).

I usually commit everything under the name Mroik. Having the "--from"
option is useful to send a one off contribution, otherwise I'd have to
change my committer ident everytime I decide to use a different name (I
know most people just use their full name so it's not common to have to
use "--from").

Mirko