[Sharlin]

Depends on your input. If non-ASCII strings are frequent and likely to contain a non-ASCII character fairly close to the start of the string, then it makes sense to short circuit.

[loeg]

The previous >0 algorithm didn't short-circuit. There is no change to short-circuit behavior here.

[Sharlin]

Ah, I was thinking of the naive implementation in the previous post [1].

[1] https://lemire.me/blog/2018/05/09/how-quickly-can-you-check-...