I expected to be able to toggle it on and off, but there doesn't appear to be a mode associated with smart hungry delete.

Hi,

I've been using smart-hungry-delete regularly now and it seems stable. Can you make a versioned release so that it can be included in the MELPA stable set?

Not sure if there is a better/suggested way of doing this, but I wrote a simple function for backspacing in Python. Normally smart-hungry-delete-backward-char will delete all indentation on a line if called with the point directly after the indentation, but I usually just want it to decrease the indentation by one level. This function does that:

(defun python-smart-backspace (&optional arg)
  "Call `smart-hungry-delete-backward-char' unless point is directly after the indentation, in which case call `python-indent-dedent-line-backspace'."
  (interactive)
  (if (looking-back "^[\t ]+")
      (python-indent-dedent-line-backspace arg)
    (smart-hungry-delete-backward-char arg)))

I just bind it to <backspace> in python-mode-map.

Question

When I select region and run smart-hungry-delete-backward-char, the region is added to my kill ring.
Is this expected behavior?

Suggestion

I suggest: we can choose whether the region should be added to kill ring or not as follows.

;; adding to kill ring
(setq smart-hungry-delete-add-kill-ring t)
;; not adding to kill ring
(setq smart-hungry-delete-add-kill-ring nil)

I guess these two commits occur this behavior.

• f21bd1b
• e06525c

after installing from melpa and putting following lines in my init.el:

(require 'smart-hungry-delete)
(smart-hungry-delete-add-default-hooks)
(global-set-key (kbd "<backspace>") 'smart-hungry-delete-backward-char)
(global-set-key (kbd "C-d") 'smart-hungry-delete-forward-char)

I get just the following error messages at pressing backspace or C-d:

smart-hungry-delete-backward-char: Symbol's function definition is void: prefix-command-preserve-state

I'm using: GNU Emacs 24.5.1 on Linux

tried binding to smart-hungry-delete-forward-char as

(global-set-key (kbd "<delete>") 'smart-hungry-delete-forward-char)

it works but kinda makes (delete-selection-mode 1) useless, one that replace the text in keystroke,
any suggestion how bind it to <delete>

im using emacs 29: GNU Emacs 29.2 (build 2, x86_64-w64-mingw32) of 2024-02-02

• error image:

• cause error when cursor is before end-of-indentation, including cursor on the beginning-of-line.

for example, open a new python buffer, enter some new lines, and invoke delete key.

i think its because the code below:

(defcustom smart-hungry-delete-major-mode-dedent-function-alist '((python-mode . (lambda () (interactive) (python-indent-dedent-line-backspace nil))))
  "Number of characters to search back in the most."
  :safe t)

we shouldnt use nil as parameter for function python-indent-dedent-line-backspace, as it wants a numeric value.

• a quickfix could be this:

(setq smart-hungry-delete-major-mode-dedent-function-alist
      '((python-mode . (lambda ()
                         (interactive)
                         (if (bolp)
                             (python-indent-dedent-line-backspace 1)
                           (python-indent-dedent-line-backspace (current-column)))))))

Hi,

When calling the smart commands from keybindings with a region selected, smart-hungry-delete-forward-char will also delete the char after point, and smart-hungry-delete-backward-char also deletes the char before point. If the char is whitespace, it will hungrily delete it.

For example, with ([] being point and | mark):

ab[]cde|fg

pressing backspace results in

a[]fg

instead of

ab[]fg

The weird thing is that it only happens if the functions are called from a bound key. Using M-x smart-hungry-delete-XXX-char works fine in both cases, deleting only the region.

It also appears to be two actions for undo: one undo will undo the character deletion, the second will undo the region deletion.

I don't know if it is related to #3 (regarding delete-selection-mode).

Cheers!

I love the smart-hungry-delete's action.
It is not excessive and is natural.

However, one problem occurred after use.
The deleted spaces appear when pasting.

I looked into the code for a while and was able to find the cause.

If I change it to delete-region, the above does not happen.