elisp如何检查是否按住Shift键 [英] elisp how to check if Shift key is pressed

问题描述

我需要检查是否按住Shift键。
更确切地说，我想根据是否按Shift来设置dired开关。

I need to check if Shift key is pressed. More exactly I would like to set dired switches depending on whether Shift is pressed.

(defadvice find-file-noselect (around find-file-noselect-set-switches activate)
  (let ((switches dired-listing-switches))
    ;; check if shift is pressed and set or not an "R" switch
    (setq dired-listing-switches "-lhRA")
    ad-do-it
    (setq dired-listing-switches switches)))

当然，我可以为不同的dired交换机提供不同的快捷方式，但是我想在选择一个目录为dired时动态地更改交换机。 p>

Of course, I can have different shortcuts for different dired switches, but I would like to change my switches dynamically during choosing a directory for dired.

推荐答案

重复的问题（忽略另一个的Windows部分）。

Duplicate question (ignoring the 'Windows' part of the other one).

我可以从Emacs发送按键到Windows ？

你可以做的最好的（正如你所说）有不同的shortcu TS。他们可以通过大小写区分...例如

The best you can do (is as you mention) have different shortcuts. They can be differentiated by capitalization... for example

(global-set-key (kbd "C-x C-D") 'dired-with-some-switches)
(global-set-key (kbd "C-x C-d") 'dired-with-other-switches)

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