ref: 5aa501870b9aa8095ae3bff7d39f55225a7b46b1
dir: /sys/src/ape/lib/ap/gen/strxfrm.c/
#include <string.h> size_t strxfrm(char *s1, const char *s2, size_t n) { /* * BUG: supposed to transform s2 to a canonical form * so that strcmp can be used instead of strcoll, but * our strcoll just uses strcmp. */ size_t xn = strlen(s2); if(n > xn) n = xn; memcpy(s1, s2, n); return xn; }