@Potato44 I need to dig my list back out and reevaluate them, see if there's anything that still looks viable. I only did a cursory examination in the first place anyways.

Are there any languages other than Whirl that would have issues with extra blocks of all 1s and 0s?

Additionally, if anyone knows of any Spoon (bf-variant using only 0 and 1) interpreters, they might be helpful. The one I'm currently working with is a bit of a pain because it strips all invalid characters entirely before running, meaning that if you split a command (eg. 00101111 aka 'terminate') over multiple lines with extra characters in the middle, it will still be executed by the interpreter.

That can be worked around, but being able to prevent commands by inserting extra characters (or being able to dodge the issue with the -0 and -1 interpreter flags hinted at in the docs) would be helpful. (For ref: docs, interpreter)

Also, want to note this in case I lose it, changing )0\` in the Whirl/Cow line to )000011100\` will terminate Whirl there. Quick test looks like this plays well with all the TIO languages (minus Cubix and Incident, unsurprisingly)

I want to do it but I'll post it here in case someone wants to FGITW me, or there is an emergency in 13 days.