Unfriendly to paths with spaces
[with apologies for the way I initially phrased this ticket]
If the path to my executable has spaces in it, scripttest gets confused. I think it has to do with [[http://bitbucket.org/ianb/scripttest/src/tip/scripttest/init.py#cl-141|this bit of code]] which tries to automatically reinterpret the first parameter based on the value of the second one.
I suggest dropping this behavior, but if you must maintain backward compatibility, you need an additional interface or an optional argument to say "don't split."