git: 9front

ref: 0b6f19f98cfc9a62fc4df1661c63c77ffe459f67
dir: /sys/src/libc/fmt/fmtrune.c/

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#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 = f->to;
		FMTRCHAR(f, rt, f->stop, r);
		f->to = rt;
		n = 1;
	}else{
		t = f->to;
		FMTRUNE(f, t, f->stop, r);
		n = t - (char*)f->to;
		f->to = t;
	}
	f->nfmt += n;
	return 0;
}