Specify UID for --sign-key

[Muri Nicanor]

hello gnupg-users,

is it possible to specifiy the uid for --sign-key (so i don't have to go
through the gpg --edit dialog)? i tried using
=Name <mail at foo.tld>
or just
<mail at foo.tld>
as described on [0], but i always get asked if i want to sign all the
uids and then i have to say no and choose the one i specified...

thanks & cheers,
muri
[0] https://www.gnupg.org/documentation/manuals/gnupg/Specify-a-User-ID.html