git: drawterm

ref: 5c08d0f7ce762e0e9ec5e5be2e504ef2359173f3
dir: /libc/runestrncat.c/

#include <u.h>
#include <libc.h>

Rune*
runestrncat(Rune *s1, Rune *s2, long n)
{
	Rune *os1;

	os1 = s1;
	s1 = runestrchr(s1, 0);
	while(*s1++ = *s2++)
		if(--n < 0) {
			s1[-1] = 0;
			break;
		}
	return os1;
}