Jeff King [off-list ref] writes:
But the latter two lines are about preference: "here is how _I_ would
like to generate diffs for el files".
... and they are commands to be executed. If they were in the
repository, and propagated with clone, then doing
git clone git://some.git/repo
cd repo
git diff
would execute arbitrary commands, which wouldn't be acceptable for
security reasons.
--
Matthieu