If I'm in dired and have a subfolder with another dired buffer (a common situation when navigating up/down directory) and want to delete a folder, I hit Dx to mark for deletion, then execute.
Emacs then asks if I want to trash the folder. I confirm, then it asks if I want to kill the dired buffer of the folder as well.
I can't think of a situation where I'd like to trash the folder but keep the buffer. Is there a way to always trash the buffer when trashing the folder?
I think it is for safety. since it can be surprising if Emacs deletes an ordinary buffer without asking user. You can file a bug report if you want to. Meanwhile you can always advice y-or-n-p to do what you want.
(define-advice dired-clean-up-after-deletion
(:around (old-fun &rest r) kill-dired-buffer-quietly)
(define-advice y-or-n-p (:around (old-fun prompt) just-yes)
(if (string-prefix-p "Kill Dired buffer" prompt)
t
(funcall old-fun prompt)))
(unwind-protect (apply old-fun r)
(advice-remove 'y-or-n-p #'y-or-n-p@just-yes)))
You can add the following snippet in your init file:
(eval-after-load 'dired
'(defun dired-clean-up-after-deletion (fn)
"My. Clean up after a deleted file or directory FN.
Remove expanded subdir of deleted dir, if any."
(save-excursion (and (cdr dired-subdir-alist)
(dired-goto-subdir fn)
(dired-kill-subdir)))
;; Offer to kill buffer of deleted file FN.
(if dired-clean-up-buffers-too
(progn
(let ((buf (get-file-buffer fn)))
(and buf
(save-excursion ; you never know where kill-buffer leaves you
(kill-buffer buf))))
(let ((buf-list (dired-buffers-for-dir (expand-file-name fn)))
(buf nil))
(and buf-list
(while buf-list
(save-excursion (kill-buffer (car buf-list)))
(setq buf-list (cdr buf-list)))))))
;; Anything else?
))
Courtesy of pmielke
You may also want to browse this Emacs wiki page about buffer reuse in Dired
