git send-email duplicating messages?

[Sam Hansen]

Greetings,

I have been sending patches out like:

$ git send-email --to=foo-list@xxxxxxxxxxxxxxx \
  --cc-cmd='scripts/get_maintainer.pl -non -norolestats' \
  *.patch

For some reason, when git sends the emails, it sends each patch both
directly to, and also cc's, everyone mentioned by get_maintainer.pl.
So, everyone gets duplicate messages.  The get_maintainer.pl script,
when run manually, does not produce duplicate entries.

Has anyone run across this before?  I'd like to do the right thing,
but don't exactly know what I'm doing wrong.  Thanks.