Repeating last command-line with `@:` Wed, 29 Jan 2014
Once you’ve used Vim for a while you become accustomed to repeating the last change in normal mode with .. Being able to repeat actions easily lends itself to some efficient workflows and Vim also provides a way of repeating the last command-line action from normal mode using @:.
I find @: useful to repeat commands such as :cn / :cp to navigate the quickfix list, :bd to easily close a bunch of files and to repeat the last substitution.
See :help @: for more.
Guest post by Matt Walker (@_walkermatt).