Emacs 常用快捷键总结

29 Oct, 2021

Keyboard shortcuts	Effects
`emacs -nw -Q`	不安装任何插件在命令行打开 Emacs
`C-v`	forward one screen
`M-v`	backwards one screen
`C-l`	text around cursor to center of screen
`M-x help-with-tutorial`	打开教程
`C-x C-c`	end Emacs session

Basic Cursor Control

Keyboard shortcuts	Effects
`C-p`	previous line
`C-n`	next line
`C-b`	backward a character
`C-f`	forward a character
`M-b`	backward a word
`M-f`	forward a word
`C-a`	beginning of line
`C-e`	end of line
`M-a`	beginning of sentence
`M-e`	end of sentence
`M-<`	beginning of whole text
`M->`	end of whole text
`C-u num command`	run command, use num as repeat-count; 注意 `C-u 6 C-v` 与其他命令的不同
`C-g`	quit a partially entered command; 退出没有响应的命令
`C-x 1`	kill all other windows

如果遇到暂时禁止执行的命令，按下 n 取消执行。

Inserting and Deleting

Keyboard shortcuts	Effects
`<DEL>` `BackSpace`	delete character before current cursor
`M-<DEL>`	kill word before cursor
`C-d`	delete next character after cursor
`M-d`	kill next word after cursor
`C-k`	kill from cursor to end of line
`M-k`	kill from cursor to end of current sentence
`C-e`	move to end of line
`M-e`	move forward to end of sentence
`C-<SPC>(<SPC>=space) move-cursor-to-somewhere C-w C-y`	kill random text, then yank to somewhere(like cut and paste)

killing 和 deleting 的区别：

killed text can be reinserted (at any position)
deleted things cannot be reinserted in this way, but you can undo a deletion

Reinsertion of killed text is called "yanking".

Undo

Keyboard shortcuts	Effects
`C-/`	undo a change to text(`C-/` 不会撤销光标移动命令，滑动命令)

For C-/ Self-inserting characters are usually handled in group of up to 20.

Normally, C-/ undoes the changes made by one command; if you repeat C-/ several times in a row, each repetition undoes one more command.

Files

Keyboard shortcuts	Effects
`C-x C-f`	find a file
`C-x C-s`	save the file

Buffers

Emacs stores each file's text inside an object called a "buffer".

Keyboard shortcuts	Effects
`C-x C-b`	List buffers
`C-x b <BUFFER NAME>`	switch buffer
`C-x b Messages`	see the messages

Extending the command set

指的是两种行为：C-x，M-x。

Keyboard shortcuts	Effects
`C-x <one character>`	Character eXtend
`M-x <a long name>`	Named command eXtend
`C-z`	exit Emacs temporarily
`fg` or `%emacs=(exec in console)`	recover from `C-z`

Auto save

#example.md# ，这是一个自动保存的备份文件。

Echo area

Mode line

-:**– TUTORIAL 63% L736 (Fundamental)——–

63% 表示当前文档的进度。如果来到文档底部会显示 Bot,来到文档顶部会显示 Top。
(Fundamental) 则是指编辑模式，

Major mode

Minor mode

Searching

Keyboard shortcuts	Effects
`C-s`	start search after cursor
`C-r`	start search before cursor

Multiple windows

Keyboard shortcuts	Effects
`C-x 2`	create one more window(top+bottom)
`C-x 3`	create one more window(left+right)
`C-x o`	switch to other windows(one by one)

Multiple frames

Keyboard shortcuts	Effects
`C-x 5 2`	new frame

Recursive editing levels

[(Fundamental)]

Get help

Keyboard shortcuts	Effects
`C-h c C-p`	oneline explanation
`C-h k C-p`	explanation with more details
`C-h f <function name>`	describe a function
`C-h v <variable name>`	describe a variable
`C-h r`	read manual