git config --git-all can return non-zero error code

[Timur Tabi <timur@freescale.com>]

According to the man page for git-config, the --git-all option is not
supposed to return an error code:

--get-all
	Like get, but does not fail if the number of values for the key is
	not exactly one.

IMHO, zero is also "not exactly one", but I still get a 1 exit code if the
key does not exist.

My .git/config says this:

[user "cq.branch"]
	mastr = upstream/master

git-config --get-all does this:

$ git config --get-all user.cq.branch.master
$ echo $?
1
$ git config --get-all user.cq.branch.mastr
upstream/master
$ echo $?
0

I just want git to return nothing if the key doesn't exist.  I don't want
it to return an exit code.  Is there a way to do this?  I think either the
code is broken or the documentation needs to be changed.

I'm running git version 1.7.3.4

-- 
Timur Tabi
Linux kernel developer at Freescale