Oops, you're right. I was going to reach for `strcspn` but then realized it doesn't work for null bytes. Huh. OP is right, there is no good function for this i

Oops, you're right. I was going to reach for `strcspn` but then realized it doesn't work for null bytes. Huh. OP is right, there is no good function for this in the standard library.