rdebath
No description of error messages in bitwidth.b
As the title says, my interpreter gets an incorrect output of Hello Zombie! 255 on bitwidth.b however I can't see anywhere mentioning the bug which is related to that particular output.
It'd be interesting to see what error means what. :)
Most of the bugs you're likely to get just scream about Zombies (Cause it's code that should be dead, but is still running around) which is the same for many different issues.
In this case, the error you got only appears for one of my test cases: broken-bfM.c, however, there is no guarantee that your problem is with the < command not allowing a return to cell zero.
Still, listing which test cases trigger which messages is probably good.
That was indeed the bug, but I had to take a bit longer to diagnose it myself