ref: a85fefcc920f837ce3a8e0010cfd09cf0b3523ce
dir: /libc/fmtrune.c/
#include <u.h>
#include <libc.h>
#include "fmtdef.h"
int
fmtrune(Fmt *f, int r)
{
Rune *rt;
char *t;
int n;
if(f->runes){
rt = (Rune*)f->to;
FMTRCHAR(f, rt, f->stop, r);
f->to = rt;
n = 1;
}else{
t = (char*)f->to;
FMTRUNE(f, t, f->stop, r);
n = t - (char*)f->to;
f->to = t;
}
f->nfmt += n;
return 0;
}