How do I temporarily set a Vim option?

Explanation

The :set command changes Vim options for the current session. Options can be boolean (on/off), numeric, or string values.

How it works

• :set number enables line numbers
• :set nonumber disables line numbers
• :set number! toggles line numbers
• :set number? queries the current value

Example

:set number           " Enable line numbers
:set tabstop=4        " Set tab width to 4
:set wrap!            " Toggle line wrapping
:set filetype?        " Show current filetype

Tips

• :setlocal sets the option only for the current buffer/window
• :set all shows all option values
• :set option& resets an option to its default
• Add options to your vimrc for permanent settings
• Use Tab completion after :set for option names