How vim adopts different key mappings for different languages

Question

I want to map braces to input left braces to have this effect {code...} I can achieve the effect by modifying the .vimrc in the home directory. The problem is that this setting is valid for all files. In C++, I I want to have such an effect, but I don’t want to have such an effect in other languages ​​(such as python/lua)...

習慣沉默 · Answer

is also written in .vimrc, but the file type must be specified:

filetype indent on
autocmd FileType cpp setlocal ......
# 后面省略号为具体设置，空格分隔，缩写见下表

Variable name	Abbreviation	Meaning
`(no)autoindent`	`ai`	Auto-indent, which automatically adds the same indentation to new lines as the current line.
`(no)cindent`	`ci`	Similar to the indentation of C language programs
`(no)smartindent`	`si`	Some improvements based on autoindent
`tabstop=X`	`ts`	How many spaces does one TAB character occupy during editing?
`shiftwidth=X`	`sw`	Use the number of spaces per level of indentation.
`(no)expandtab`	`(no)et`	Whether to automatically expand the input TAB into spaces. To enter TAB after opening, you need `Ctrl-V`
`softtabstop=X`	`sts`	It is convenient to use the backspace (`BACKSPACE`) key after opening et. Each time you backspace, X spaces will be deleted
`(no)smarttab`	`(no)sta`	When turned on, pressing `TAB` at the beginning of the line will add sw spaces, otherwise ts spaces will be added.