Nathan Bullock [off-list ref] writes:
... There was a question if those could be included
in the main git code base. Do you know if that is likely to happen?
It entirely is up to the author of the patch.
"I have this random code on Github so people can just copy and paste it in
their .bashrc" may be a good starting point to give hint to people who are
interested to come up with a good patch with a use example on a handful of
comment lines and a readable commit log message.
I didn't see it happen in that thread, so perhaps nobody was interested
back then.