CODEWITHSUNDEEP
emacs
Tohiko
Tohiko

Reputation: 1982

Apply delete-indentation to a whole region

The function delete-indentation, usually bound to (M-^), joins the current line to the next one and deletes any indentation.

How do I apply this function to a whole region to join multiple lines in a region? Or is there another way to achieve the desired result?

Thanks

Upvotes: 3

Views: 120

Answers (1)

Thomas
Thomas

Reputation: 17422

Try unfill-paragraph, taken from the Emacs wiki.

;;; An unfill-paragraph that works in lisp modes
(defun unfill-paragraph (&optional region)
  "Takes a multi-line paragraph and makes it into a single line of text."
  (interactive (progn (barf-if-buffer-read-only) '(t)))
  (let ((fill-column (point-max))
        (emacs-lisp-docstring-fill-column t))
    (fill-paragraph nil region)))

If you're willing to give up the prefix argument of the standard M-^, you could bind the following function to that keyboard shortcut like so:

(defun join-line-or-unfill-paragraph (&optional unfill)
  (interactive "P")
  (if unfill (unfill-paragraph) (delete-indentation)))
(global-set-key (kbd "M-^") 'join-line-or-unfill-paragraph)

This way, whenever you type C-u before M-^ the full paragraph will be joined.

Upvotes: 4

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