ref: b820d892a6914104a0ecb3af9fa287e693a4f90c
dir: /sys/src/libc/port/runestrncpy.c/
#include <u.h> #include <libc.h> Rune* runestrncpy(Rune *s1, Rune *s2, long n) { int i; Rune *os1; os1 = s1; for(i = 0; i < n; i++) if((*s1++ = *s2++) == 0) { while(++i < n) *s1++ = 0; return os1; } return os1; }