[zelphirkalt]

Idk, rarely (never?) happened to me, that I make a tail call into a non-tail call, because I ad-hoc add something like in your example to it. Seems like a beginner mistake. When I design a function to be tail recursive, which is all the time in langs supporting that, I wont suddenly disregard all care and add code like that. And hopefully other people will at least spent a minute reading the function they are modifying, before slapping that change on and calling it a day. If not, then some syntax wont protect you from that either.