I read this “idiom” together with --len as lodsb; stosb; cmp; loopnz. But with time it lost it’s purpose, because if you look at any modern char-star interface

I read this “idiom” together with --len as lodsb; stosb; cmp; loopnz. But with time it lost it’s purpose, because if you look at any modern char-star interface implementation, you’ll see pages of multi-arch simd-aware code. And it will never pass a review in a decent team, because neither readability nor performance (the author, with all respect, couldn’t even spell its meaning out correctly N times in a row, which we all couldn’t for some N, give or take one, and weather). This idiom is just a dead relict on a venerable C programmer’s home altar.