bug#45767: bug#45768: icomplete-mode does not provide in region completion for dabbrev-completion

[Lars Ingebrigtsen]

simon254@mailbox.org writes:

> emacs -Q
> in *scratch* evaluate
> (setq icomplete-in-buffer t)
> (icomplete-mode t)
>
> type:
> asdf1
> asdf2
> asdf followed by C-M-/ (dabbrev-completion) 
> -> default completion is invoked, not icomplete-mode

(I'm going through old bug reports that unfortunately weren't resolved
at the time.)

I can reproduce this on the current trunk, too, but skimming the code,
I'm not quite sure how this is supposed to work.  I've added Stefan to
the CCs; it looks like he added the icomplete-in-buffer thing back in
2013.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no