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Re:Your Bash Prompt Needs This by BCM43 on Friday April 27, 2012 @03:09PM (#3900618)
But if you start a command (say, ssh) and then arrow-up you will then be cycling back through the last ways you entered that command.

Like Ctrl+R?

Re:Your Bash Prompt Needs This by xyzzyb on Friday April 27, 2012 @03:15PM (#3900646)
Not exactly, but similar. If you want to see a demo, Ryan Bates highlights this feature (among others) with his ZSH screencast: http://railscasts.com/episodes/308-oh-my-zsh