ref: f8513dccb47b19a707d7996d8e51f7e032d1b5b5
dir: /sys/src/libString/s_nappend.c/
#include <u.h>
#include <libc.h>
#include "String.h"
/* append a char array ( of up to n characters) to a String */
String *
s_nappend(String *to, char *from, int n)
{
if (to == 0)
to = s_new();
if (from == 0)
return to;
for(; n && *from; from++, n--)
s_putc(to, *from);
s_terminate(to);
return to;
}