emacs新手问题 - 如何在一个地区内搜索

Question

如果我选择一个文本区域,有没有办法使用isearch(或其他一些搜索命令),这将允许我只在该区域内搜索？我希望在宏中使用它来进行技术处理.

这可能是显而易见的,但我做了一个快速搜索,找不到办法.

Answer 1

您可以使用以下命令组合:

M-x narrow-to-region
C-s SOMETEXT
M-x widen

虽然,这有点麻烦,但这是一个新的命令,可以自动完成上述操作.

(defun isearch-forward-region-cleanup ()
  "turn off variable, widen"
  (if isearch-forward-region
      (widen))
  (setq isearch-forward-region nil))

(defvar isearch-forward-region nil
  "variable used to indicate we're in region search")

(add-hook 'isearch-mode-end-hook 'isearch-forward-region-cleanup)

(defun isearch-forward-region (&optional regexp-p no-recursive-edit)
  "Do an isearch-forward, but narrow to region first."
  (interactive "P\np")
  (narrow-to-region (point) (mark))
  (goto-char (point-min))
  (setq isearch-forward-region t)
  (isearch-mode t (not (null regexp-p)) nil (not no-recursive-edit)))

现在就做M-x isearch-forward-region RET SOMETEXT,或者将它绑定到您的首选项的键绑定,如:

(global-set-key (kbd "C-S-s") 'isearch-forward-region)

Answer 2

正如Trey Jackson所说,你可以使用narrow-to-region和widen.我将填写键盘快捷键.请注意,默认情况下它们处于禁用状态,并且emacs会在首次使用时以交互方式提示"不可删除"它们.

C-x n n
C-s sometext
C-x n w