It does cast it down (to unsigned char). The requirement for int however was is not for "%lc", it was already in C89. I suspect it has to do with default integr

It does cast it down (to unsigned char). The requirement for int however was is not for "%lc", it was already in C89. I suspect it has to do with default integral promotions for (variadic) function parameters - which I incorrectly disregarded when replying. So the original code is correct, my reply wasn't.