post-receive-hook emailer

Hi everyone,

Anyone know what is used to send the http://marc.info/?l=git-commits-head 
  mails?

The post-receive contrib hook in the repository isn't working for us - we want diffs and such in our mails. I started working on patching the script in contrib; but it's not really clear to me if the current state of that script is as it should be and I just have a different use case.

Anyway - anyone have a mailer that sends diffs and such? :-) Or should I just write a wrapper around format-patch and send-email? (To handle branches well it gets slightly complicated, quick - or maybe I just haven't understood how the post-receive hook works).

  - ask