ref: d9f3982b97f188767096902eab5ed15d2ffe73d2
dir: /sys/src/cmd/unix/drawterm/libc/runefmtstr.c/
#include <u.h>
#include <libc.h>
#include "fmtdef.h"
Rune*
runefmtstrflush(Fmt *f)
{
if(f->start == nil)
return nil;
*(Rune*)f->to = '\0';
return f->start;
}