git format-patch shell quoting bug

Hi,

There's apparently a quoting bug in git-format-patch. When I import
a patch with apply-mbox, for example

From: Carlos O'Donell <redacted>

The author field is correctly set, including the "'" in Carlos' name.

So when I go to rebase my tree, or send out patches, I 
"git-format-patch origin" and get...

/usr/bin/git-format-patch: eval: line 200: unexpected EOF while looking for 
matching `''
/usr/bin/git-format-patch: eval: line 201: syntax error: unexpected end of file

Which produces a bogus output patch with a blank From and Date,

Subject: [PATCH] ...
From:
Date:

[...]

I believe this recently crept in, as I don't recall seeing it before.

Cheers,
	Kyle