Emacs: Make paredit work with erlang-mode (or any other non-lisp mode)

README.md

When you want to use awesome paredit with erlang-mode or any other non-lisp language there's a problem when you want to insert a pair of parenthesis for a function call.

Say you have typed myFunction and now type (, paredit assumes you're in a lisp and creates myFunction () instead of myFunction().

The snippet prevents paredit from inserting a space before parentheses by locally resetting the predicate functions used to determine if a space should be inserted before a pair of parentheses. By changing the hook used you could also make this work in any other mode for non-lisp languages. For exampe for js2-mode replace erlang-mode-hook in line 1 with js2-mode-hook.

init.el

(add-hook 'erlang-mode-hook 'my/disable-paredit-spaces-before-paren)
(defun my/disable-paredit-spaces-before-paren ()
  ;; Function which always returns nil -> never insert a space when insert a parentheses.
  (defun my/erlang-paredit-space-for-delimiter-p (endp delimiter) nil)
  ;; Set this function locally as only predicate to check when determining if a space should be inserted
  ;; before a newly created pair of parentheses.
  (setq-local paredit-space-for-delimiter-predicates '(my/erlang-paredit-space-for-delimiter-p)))