robbyrussell/oh-my-zsh — pull request #968 by SimonGreenhill (2012-02-23 21:48:43+00:00)
Title: theme-chooser should warn in env variable $ZSH is not set

The theme-chooser tool is a bit tricky to use otherwise. If the env. var $ZSH isn't set, then theme-chooser is unable to source various files and fails to run. This patch warns and then exits is $ZSH is not set.