Comment #1 on issue 702 by bryan.oakley: Rerun failed tests based on output.xml of previous run
http://code.google.com/p/robotframework/issues/detail?id=702
How about instead of an option, simply doing "pybot output.xml" by default reruns all failed tests. Presumably the output file has all the information it needs to do this (and if not, it should be added)
