bug#52004: dired-rename-subdir-2: Expected to find ‘/tmp/a/./’ in headerline of /tmp/a/

bug#52004: dired-rename-subdir-2: Expected to find ‘/tmp/a/./’ in headerline of /tmp/a/

[積丹尼 Dan Jacobson]

$ mkdir /tmp/a /tmp/b
$ emacs -Q /tmp/a
Put the cursor on the "." line, and hit R and try and move it to /tmp/b .
Overwrite ‘/tmp/b’? [Type yn!q or C-h] y
dired-rename-subdir-2: Expected to find ‘/tmp/a/./’ in headerline of /tmp/a/

Yes, on /tmp we can move /tmp/a to /tmp/b (creating /tmp/a/b/) easily.

But still, the above problem should be detected earlier, before the
question is shown to the user.

emacs-version "27.1"

bug#52004: dired-rename-subdir-2: Expected to find ‘/tmp/a/./’ in headerline of /tmp/a/

[Lars Ingebrigtsen]

積丹尼 Dan Jacobson <jidanni@jidanni.org> writes:

> $ mkdir /tmp/a /tmp/b
> $ emacs -Q /tmp/a
> Put the cursor on the "." line, and hit R and try and move it to /tmp/b .
> Overwrite ‘/tmp/b’? [Type yn!q or C-h] y
> dired-rename-subdir-2: Expected to find ‘/tmp/a/./’ in headerline of /tmp/a/

I can't reproduce this in Emacs 29, so I guess it's been fixed since
then.

However, hitting `g' in the directory after the operation gives me an
error about default-directory no longer existing (which is correct), but
this should be handled better.

This is a duplicate of bug#30578, though, so I'm merging these bugs.

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

bug#52004: dired-rename-subdir-2: Expected to find ‘/tmp/a/./’ in headerline of /tmp/a/

[Lars Ingebrigtsen]

Lars Ingebrigtsen <larsi@gnus.org> writes:

>> $ mkdir /tmp/a /tmp/b
>> $ emacs -Q /tmp/a
>> Put the cursor on the "." line, and hit R and try and move it to /tmp/b .
>> Overwrite ‘/tmp/b’? [Type yn!q or C-h] y
>> dired-rename-subdir-2: Expected to find ‘/tmp/a/./’ in headerline of /tmp/a/

I've now made it refuse to rename . and .. -- doing so is just too
confusing even if it worked.