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August 29, 2015 14:16
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In Clojure, I'd like to transpose *pairs* of s-exps (i.e. KVs in a map)
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;; {:foo bar| | |
;; :baz quux} | |
;; | |
;; => | |
;; | |
;; {:baz quux | |
;; :foo bar|} | |
;; This is my first attempt at ELisp of a 'bigger-than-hacking-around-in-init.el' size - please be kind! | |
;; At the same time, any feedback would be really valuable! | |
;; I've essentially tried to automate what I'd do with the usual Paredit functions - not sure if this | |
;; is the right way to go about things? | |
(defun transpose-sexp-pairs () | |
(interactive) | |
(let ((mid-point (point))) | |
(paredit-forward 1) | |
(paredit-backward 1) | |
(let ((second-start (point))) | |
(paredit-forward 2) | |
(let ((second-end (point))) | |
(paredit-backward 4) | |
(let ((first-start (point))) | |
(paredit-forward 2) | |
(let ((first-end (point))) | |
(let ((first-pair (buffer-substring first-start first-end)) | |
(second-pair (buffer-substring second-start second-end))) | |
(goto-char second-start) | |
(delete-region second-start second-end) | |
(insert first-pair) | |
(goto-char first-start) | |
(delete-region first-start first-end) | |
(insert second-pair) | |
(paredit-forward 2)))))))) |
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