Delete indentations with backward-delete-char-untabify

[roife]

backward-delete-char-untabify is a useful built-in command for deleting indentations quickly. Here's an example (setting (setq backward-delete-char-untabify-method 'hungry)):

(use-package ialign
  :straight t
  :config
  (defun ()
      |...))

when I press backspace, it changes to

(use-package ialign
  :straight t
  :config
  (defun ()
|...))

It does not work with puni. Since DEL is bond with puni-backward-delete-char, how can I delete indentations quickly?

[AmaiKinono]

Sorry for the late response.

A simple fix is:

(defun my-backspace ()
  (interactive)
  (if (looking-back (rx line-start (+ blank)))
      (delete-region (line-beginning-position) (point))
    (puni-backward-delete-char)))

then bind it to DEL.