How do I set the maximum line width for automatic text wrapping?
:set textwidth=80
The textwidth option sets the maximum width for text.
Tag: ex-commands
How do I create a custom Ex command?
:command Name action
The :command command defines a new user Ex command.
How do I set options that only apply to certain file types?
autocmd FileType python setlocal ...
Using autocmd FileType with setlocal, you can configure settings that only apply when editing files of a specific type.
How do I configure backup and swap file behavior?
:set nobackup noswapfile
Disabling backup and swap files prevents Vim from creating extra files alongside your source code.
How do I change the color scheme in Vim?
:colorscheme name
The :colorscheme command changes the visual theme of Vim.
How do I highlight the line the cursor is on?
:set cursorline
The cursorline option highlights the entire line where the cursor is positioned.
How do I enable automatic file type detection and plugins?
:filetype plugin indent on
The filetype plugin indent on command enables three key features: file type detection, filetype plugins, and filetype-based indentation.
How do I show line numbers in Vim?
:set number
The number option displays absolute line numbers in the left margin.
How do I prevent long lines from wrapping on screen?
:set nowrap
The nowrap option prevents long lines from wrapping to the next screen line.
How do I enable automatic indentation?
:set autoindent
The autoindent option copies the indentation from the current line when starting a new line.
How do I customize syntax highlighting colors?
:highlight Group ctermfg=color
The :highlight command changes the appearance of a highlight group.
How do I customize the status line at the bottom of the screen?
:set statusline=%f\ %m%r%=%l/%L
The statusline option controls what information is shown in the status bar at the bottom of each window.
How do I create a custom key mapping?
:nnoremap key command
The :nnoremap command creates a non-recursive normal mode mapping.
How do I prevent duplicate autocommands when reloading vimrc?
augroup name | autocmd! | ... | augroup END
Using augroup with autocmd! inside prevents duplicate autocommands from accumulating when you reload your vimrc.
How do I configure Vim's built-in auto-completion?
:set completeopt=menu,menuone,noselect
The completeopt option controls the behavior of the completion popup menu.
How do I save only a range of lines to a file?
:{range}w filename
The :w command with a range and filename saves only the specified lines to a new file.
How do I find where a Vim option or mapping was last set?
:verbose set option?
The :verbose prefix shows where an option was last set (which file, which line).
How do I access Vim's built-in help system?
:help topic
Vim has an extensive built-in help system.
How do I switch to a specific buffer by number?
:b {number}
The :b command followed by a buffer number switches directly to that buffer.
How do I apply commands to specific line ranges?
:{start},{end} command
Ex commands accept range specifiers that control which lines are affected.