An enhanced newline function for use with smartparens-mode.

readme.md

I use smartparens-mode so when I type { I get {} with the cursor inbetween the two braces. I realized that more or less 100% of the time I called newline-and-indent when the cursor was between curly braces what I really wanted was to create a block and have my cursor be in the middle of that block, e.g.

let object = {▮}

after:

let object = {
  ▮
}

I was manually doing the whole newline-and-indent, split-line and indent-for-tab-command dance but then I realized I use emacs and I should probably just write some elisp to fix it so I did.

fancy-newline.el

(defun my-fancy-newline ()
  "Add two newlines and put the cursor at the right indentation
between them if a newline is attempted when the cursor is between
two curly braces, otherwise do a regular newline and indent"
  (interactive)
  (if (and (equal (char-before) 123) ; {
           (equal (char-after) 125)) ; }
      (progn (newline-and-indent)
             (split-line)
             (indent-for-tab-command))
    (newline-and-indent)))

;; I set mine to C-j, you do you, don't let me tell you how to live your life.
(global-set-key (kbd "C-j") 'my-fancy-newline)