Emacs里像Vim的行内替换一样的函数

Emacs-general
1

有没有像Vim里:s那种快速替换当前行的函数？

我知道可以自己写，不过写之前我想问问有没有现成的，或者更好的操作。

更新：我写了一个

2

C-a C-SPACE C-n M-Shift-5

3

不了解 Vim，Emacs 自带的替换命令像 M-% (query-replace) 之类的支持 Region。

4

自己写吧, 写的比发帖快

5

写了一个一键替换。这回不用动脑子操作了。

inline-replace

(defvar inline-replace-last-input "")
(defvar inline-replace-history nil)
(defvar inline-replace-count 1)
(defvar inline-replace-original-buffer nil)
(defvar inline-replace-overlay nil)
(defvar inline-replace-beg nil)

(defvar inline-replace-minibuffer-map (let ((map minibuffer-local-map))
                                        (define-key map (kbd "C-p") #'inline-replace-previous)
                                        (define-key map (kbd "C-n") #'inline-replace-next)
                                        map))

(defun inline-replace-previous ()
  "Previous match."
  (interactive)
  (when (> inline-replace-count 1)
    (decf inline-replace-count)))

(defun inline-replace-next ()
  "Next match."
  (interactive)
  (incf inline-replace-count))

(defun inline-replace ()
  "Search for the matching REGEXP COUNT times before END.
You can use \\&, \\N to refer matched text."
  (interactive)
  (condition-case nil
      (save-excursion
        (setq inline-replace-beg (progn (beginning-of-line) (point-marker)))
        (setq inline-replace-original-buffer (current-buffer))
        (add-hook 'post-command-hook #'inline-replace-highlight)

        (let* ((minibuffer-local-map inline-replace-minibuffer-map)
               (input (read-string "regexp/replacement: " nil 'inline-replace-history))
               (replace (or (nth 1 (split-string input "/")) "")))
          (goto-char inline-replace-beg)
          (re-search-forward (car (split-string input "/")) (line-end-position) t inline-replace-count)

          (unless (equal input inline-replace-last-input)
            (push input inline-replace-history)
            (setq inline-replace-last-input input))
          (remove-hook 'post-command-hook #'inline-replace-highlight)
          (delete-overlay inline-replace-overlay)
          (replace-match replace)
          (setq inline-replace-count 1)))
    ((quit error)
     (delete-overlay inline-replace-overlay)
     (remove-hook 'post-command-hook #'inline-replace-highlight)
     (setq inline-replace-count 1))))

(defun inline-replace-highlight ()
  "Highlight matched text and replacement."
  (when inline-replace-overlay
    (delete-overlay inline-replace-overlay))
  (when (>= (point-max) (length "regexp/replacement: "))
    (let* ((input (buffer-substring-no-properties (1+ (length "regexp/replacement: ")) (point-max)))
           (replace (or (nth 1 (split-string input "/")) "")))
      (with-current-buffer inline-replace-original-buffer
        (goto-char inline-replace-beg)
        ;; if no match and count is greater than 1, try to decrease count
        ;; this way if there are only 2 match, you can't increase count to anything greater than 2
        (while (and (not (re-search-forward (car (split-string input "/")) (line-end-position) t inline-replace-count))
                    (> inline-replace-count 1))
          (decf inline-replace-count))
        (setq inline-replace-overlay (make-overlay (match-beginning 0) (match-end 0)))
        (overlay-put inline-replace-overlay 'face '(:strike-through t :background "#75000F"))
        (overlay-put inline-replace-overlay 'after-string (propertize replace 'face '(:background "#078A00")))))))

UPDATE：我把prompt里的Replace/replacement改成regexp/replacement了。

UPDATE：C-n/p替换下一个/上一个符合regexp的字符

UPDATE: 然后发现了轮子……

UPDATE：修复了一个很傻的错误：inline-replace-count应该恢复为1，我写成了0 （这，修改帖子也会被推送到顶端吗……）

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