implementing real support for multiple authors of the commit (ex. pair programming)

Hello,

I've found some workarounds for adding multiple people as an author of the
commit. All of them doesn't seem really clear for me. I would like to ask
if someone can elaborate on complexity of adding a genuine support for
multiple authors of the commit?

At this moment it looks like people can specify multiple names for author
field but still only one email, but most applications working with git
repositories (ex. gitorious) use email field to identify a person. I think
at this moment adding possibility of adding more than one email in author
field could help.

I've tried with using something like --author 'Mickey Mouse & Donald Duck
<mickey@mice.net, donald@ducks.net>' and it worked but still I would prefer
using something like:
--authors 'Mickey Mouse [off-list ref], Donald Duck [off-list ref]'

Adding such support sooner then later could prevent propagation of various
workarounds and enrich git with very significant functionality which
becomes fundamental in development nowadays.

With the committer I think it make sense to have a reference just to one
person who actually commits the code. 

With wishes of fun with social codding,
elf Pavlik
http://wwelves.org/perpetual-tripper