git log filtering

["Don Zickus" <dzickus@gmail.com>]

I was curious to know what is the easiest way to filter info inside a
commit message.

For example say I wanted to find out what patches Joe User has
submitted to the git project.
I know I can do something like ' git log |grep -B2 "^Author: Joe User"
' and it will output the matches and the commit id.  However, if I
wanted to filter on something like "Signed-off-by: Joe User", then it
is a little harder to dig for the commit id.

Is there a better way of doing this?  Or should I accept the fact that
git wasn't designed to filter info like this very quickly?

I guess what I was looking to do was embed some metadata inside the
commit message and parse through it at a later time (ie like a
bugzilla number or something).

Any thoughts/tips/tricks would be helpful.

Cheers,
Don