2 Jun 2012
Some notes on Emacs’ Paredit mode.
More so I can stop fighting with Paredit and do some Clojure programming than show any expertise - see Mudphone’s Paredit Preso for the real deal, as well as hagelb’s Paredit screencast notes and the Paredit Cheat Sheet.
M-( wrap parens around something. Also for { [ “
M-s remove parens from something
M-S-s split sexpr into two
M-S-j join sexprs
C-q ♦ just do what I say, dammit! force insert of paren or bracket ♦
C-u DEL force delete paren or bracket
“Barfage and slurpage” ie moving parens left and right. I had some trouble getting this going on OSX, as the terminal doesn’t seem to map control key sequences correctly. After modifying emacs (see below), I got these going:
C-
, C- move right paren right or leftESC C-
, ESC C- move left paren right or left
I wrote this elisp for my ~/.emacs.d/sonia.el (I’m using Technomancy’s Emacs Starter Kit):
(when (eq system-type 'darwin)
(eval-after-load 'paredit
'(progn
;; C-left
(define-key paredit-mode-map (kbd "M-[ 5 d")
'paredit-forward-barf-sexp)
;; C-right
(define-key paredit-mode-map (kbd "M-[ 5 c")
'paredit-forward-slurp-sexp)
;; ESC-C-left
(define-key paredit-mode-map (kbd "ESC M-[ 5 d")
'paredit-backward-slurp-sexp)
;; ESC-C-right
(define-key paredit-mode-map (kbd "ESC M-[ 5 c")
'paredit-backward-barf-sexp)
)))