John Wiegley <jwiegley@gmail.com> writes:
> If a volunteer is willing to give us code to support using lldb, does it then
> become a question of which uses to _not facilitate_?  That's really what I
> reacting to. I totally understand not *making an effort* to support something
> that might inhibit the growth of gdb; but if we're in the position of
> receiving code to support lldb, then should the same argument be used to deny
> its acceptance. Or is this not what you're saying?

Such code to support LLDB exists.

https://svnweb.freebsd.org/ports/head/editors/emacs/files/extrapatch-lldb-gud.el?view=log

It's available now for Emacs users on at least one (free) operating system.