Question

我发现有两种方法可以在emacs中设置密钥：global-set-key和define-key。它们是一样的吗？或者这两种方法之间是否有任何利弊？

(global-set-key (kbd "C-c C-f") 'my-find-file)
(define-key global-map
  "\C-ck" 'hello)

Answer 1

如果你看一下global-set-key你会看到的定义，实际上没有区别：

(define-key (current-global-map) key command)

(current-global-map)可能会返回与global-key-map不同的键盘映射，但不常见。

现在，由于define-key采用了键映射的参数，因此它显然比简单global-set-key更灵活。有关键盘映射的详细信息，请查看info pages。

Answer 2

区别在于(global-set-key)或(local-set-key)为您找到全局/本地地图（在致电(define-key)之前）。

修改您可以将M-x describe-function用于(global-set-key)

(global-set-key key command)

Give key a global binding as command.
command is the command definition to use; usually it is
a symbol naming an interactively-callable function.
key is a key sequence; noninteractively, it is a string or vector
of characters or event types, and non-ASCII characters with codes
above 127 (such as ISO Latin-1) can be included if you use a vector.

适用于(define-key)

(define-key keymap key def)

In keymap, define key sequence key as def.
keymap is a keymap.

key is a string or a vector of symbols and characters meaning a
sequence of keystrokes and events.  Non-ASCII characters with codes
above 127 (such as ISO Latin-1) can be included if you use a vector.
Using [t] for key creates a default definition, which applies to any
event type that has no other definition in this keymap.

Emacs中键映射的两种方法

2 个答案: