Emacs中密钥映射的两种方法

我发现在emacs中有两种设置键的方法：golbal set key和define key。 它们是一样的吗？或者这两种方法之间有什么利弊

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

---

实际上没有区别，如果您查看

global set key

的定义，您将看到：

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

（当前全局映射）

可能会返回一个与

全局键映射不同但不常见的键映射

现在，由于
define key
接受keymap的参数，因此它显然比简单的
global set key
更灵活。有关键映射的详细信息，请查看。
区别在于
（全局设置键）
或
（本地设置键）
为您找到全局/本地映射（在调用
（定义键）
之前）

编辑您可以对
（全局设置键）

对于
（定义键）

(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.

(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.