>>>>> Daniel Semyonov writes:

    > I've procrastinated on this for a while and then due to unforeseen
    > circumstances I've been able to use Emacs on more than my phone
    > only a few times in the past two months or so.  I don't think
    > these circumstances will change soon, so I'm not sure when I'll be
    > able to work on this again unfortunately...

Well as luck would have it I had a rare opportunity to spend a few hours
at home today with no prior business I had to take care of (and this was
also fresh on my mind for a change) so I decided to try finish this
while I could while I can use a normal computer.

Attached is a new version of the patch which is identical in
functionality (more or less) to the last one but nnatom is implemented
on top of an abstract nnfeed backend.  I made a lot of effort to
document nnfeed, hopefully everything is clear, but I'm honestly very
tired and might have made some mistakes.  The docs in nnfeed.el are
supposed to be all that's needed for someone basing a backend on it, so
I'd like to know if it's clear.

I just realized this patch still can't be merged though, NEWS and the
manual need updated.  I'll do it on my phone tomorrow if I have the
time.  Hopefully this can be merged soon finally though