DouKaku?beta

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昔ゴルフ用に書いたものを書き直しました。Emacs のバッファを書き換えます。対象言語は Common Lisp で、バッファのモードは lisp-mode と仮定しています。

出力例:
(defun mylib-compress-need-space-p()(cond((or(bobp)(eobp))nil)((string-match"["'(),`]"(string(following-char)))nil)((looking-back"#[0-9]+#")nil)((looking-back"#\\.")t)((string-match"["()]"(string(preceding-char)))nil)(t)))
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(defun mylib-compress-region (&optional start end)
  (interactive "r")
  (save-restriction
    (when (and start end)
      (narrow-to-region start end)
      (goto-char (point-min)))
    (loop
      do (delete-region (point)
                        (progn (while (forward-comment 1)) (point)))
      until (or (eobp) (= (following-char) ?\)))
      if (mylib-compress-need-space-p)
      do (insert " ")
      if (looking-at "\\(#'?\\|['`]\\|,@?\\)?(")
      do
      (down-list 1)
      (mylib-compress-region)
      (up-list 1)
      else do (forward-sexp 1))))

(defun mylib-compress-need-space-p ()
  (cond ((or (bobp) (eobp))
         nil)
        ((string-match "[\"'(),`]" (string (following-char)))
         nil)
        ((looking-back "#[0-9]+#")
         nil)
        ((looking-back "#\\\\.")
         t)
        ((string-match "[\"()]" (string (preceding-char)))
         nil)
        (t)))

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