bug#49043: 27.1: ibuffer-toggle-filter-group [BUGFIX]

[Lars Ingebrigtsen]

Stephen Berman <stephen.berman@gmx.net> writes:

> I showed this can be triggered by the Tramp bug, but perhaps
> there are other triggers too, and if so some additional safeguard in
> Ibuffer such as what Lars suggested may be appropriate.

I think Michael's fix should be sufficient here, after looking at this
again.  `abbreviate-file-name' isn't supposed to bug out, so we'll see
breakages throughout Emacs if it does, so adding special code to ibuffer
in this case to handle it wouldn't be productive.

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