This. Exactly this. Rule 5 of http://cr.yp.to/qmail/guarantee.html http://cr.yp.to/qmail/guarantee.html remains completely true. Don't parse. When you try to u

This. Exactly this. Rule 5 of http://cr.yp.to/qmail/guarantee.html http://cr.yp.to/qmail/guarantee.html remains completely true. Don't parse. When you try to use a user interface as a command interface, you have to parse. And some day it will bite you. The solution is to remotely invoke programs designed for the purpose, and then pass data to them in a structured format.