bug#29412: 27.0.50; dired-toggle-read-only should (at some point!) check that the direcory is writeable

[Lars Ingebrigtsen]

Robert Marshall <robert.marshall@codethink.co.uk> writes:

> mkdir dired-err
> touch dired-err/xx
> chmod 555 dired-err

[...]

> You exit the filename editing mode with an error (not surprising) but
> all your edits are lost. It would be more helpful if either C-x C-q gave
> you a warning

I've now made `C-c C-q' signal an error if the directory isn't writable
in Emacs 28.

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