Because of inexplicable webplayer crashes I’ve had to delay the release and rewrite some of the structure to support both threading and coroutines. In the process I learnt about nullable types [byte?] which is a fair trade.
There may be a few issues with the code - but so far it’s working fine
You do realize that whole loop could be in C in 30 seconds of coding time. I understand it’s all about, er, fun with Brainfuck, but why sacrifice efficency for made totally of ineligible punchation? Reminds me a little of Perl.