Apart from the fact that you are re-using the Thompson shell's name, consider things like its if command. Yes, command; not reserved word. And my list is not

Apart from the fact that you are re-using the Thompson shell's name, consider things like its if command. Yes, command; not reserved word. And my list is not exhaustive, either. But it makes the point to those that would erroneously dismiss this (as you yourself do) as something that "doesn't see much use today", that this, given how long the list of non-daemontools-family commands that operate this way actually turns out to be when one looks around, is not really a daemontools, or even a "Bernstein", thing.