Tab-Complete your ex commands

The command asks Vim to reveal a list of possible completions (see :h c_CTRL-D ).

:col<C-d>
colder
colorscheme

Suppose we want to change the color scheme, but we can’t remember the name of the theme we want. We could use the command to show all the options:

:colorscheme <C-d>
❮ blackboard desert
blue
darkblue
default
delek
elflord
evening
koehler
mac_classic
morning
murphy
pablo
peachpuff
ron
shine
slate
solarized
torte
zellner

We can even define the tab-completion behavior when creating our own custom Ex commands. To see what’s possible, check out :h :command-complete.