bug#19392: Emacs searches for dabbrevs in archive buffers

[Lars Ingebrigtsen]

Paul Pogonyshev <pogonyshev@gmail.com> writes:

> $ emacs -Q random.zip
>
> 1. Switch to buffer "*scratch*"
> 2. Type "P" (without quotes)
> 3. Press M-/
> 4. Here it finds expansion "PK" from buffer "random.zip".  Cycling
>    with M-/ finds a few more, which are more binary-like.

I've now fixed this in Emacs 29.  Instead of making some kind of
framework for letting modes specify this themselves, it seems more user
friendly to just introduce a new dabbrev-ignored-buffer-modes variable,
so I did that.

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