sorin-ionescu/prezto — pull request #669 by hmorales (2014-09-02 23:44:05+00:00)
Title: Python virtualenvwrapper workon crashing when tabbing.

Mac 10.9.4 using iTerm2

When in a new terminal session tabbing to list virtualevn's using workon crashes the session. Using the same fix found on the oh-my-zsh thread below fixed the issue for me.

https://github.com/robbyrussell/oh-my-zsh/issues/2355