This has some a potentially bad security implications, especially if you 
enumerate all alises, and the benefit seems pretty minor. You can always 
include a note of which repository you're trying to target in the message 
body.

By default (and without extra description), the content of a new patch by
the patchbomb extension is not always sufficient to retrieve the targeted
project by reviewers.

Could we add a new comment line with aliases of the current remote
repositories (like ``hg paths``) ?