mxcl/homebrew — pull request #20798 by dongweiming (2013-06-26 07:26:56+00:00)
Title: Add zsh-history-substring-search

zsh-history-substring-search

This is a clean-room implementation of the Fish shell's history search feature, where you can type in any part of any previously entered command and press the UP and DOWN arrow keys to cycle through the matching commands. You can also use K and J in VI mode or ^P and ^N in EMACS mode for the same.