ref: d091e9f0123b86ddabfd76d3637f49486b0b16df
dir: /sys/src/cmd/unix/u9fs/strecpy.c/
#include <plan9.h>
char*
strecpy(char *to, char *e, char *from)
{
if(to >= e)
return to;
to = memccpy(to, from, '\0', e - to);
if(to == nil){
to = e - 1;
*to = '\0';
}
return to;
}