bug#21635: 24.5; dabbrev: customizable variable dabbrev-friend-buffer-function not documented in Emacs manual

[Stefan Kangas]

phs <phs@lsv.ens-cachan.fr> writes:

> Unless I am mistaken, there is no mention of
> dabbrev-friend-buffer-function in the Emacs manual.

Glenn Morris <rgm@gnu.org> writes:

> As a general comment, the manual does not try to exhaustively list all 
> options.
> I am not a dabbrev user, so have no idea how important this one is.

Unfortunately I don't use dabbrev either.  But I can see that no one has
replied here in five years, which is perhaps some kind of indication.

Does anyone else have an opinion here?

Best regards,
Stefan Kangas