robbyrussell/oh-my-zsh — pull request #1545 by wodesuck (2013-01-11 12:42:07+00:00)
Title: Add sudo plugin which bind \e\e to add sudo in front of the command

type:
$ pacman -Syu
then, press \\, and the command will be:
$ sudo pacman -Syu
or, add sudo to the previous command if nothing is type yet.