ref: 08cd0ea8d4cb921004e8f06caf0f99c944057bdf
dir: /sys/src/libbio/bputrune.c/
#include <u.h>
#include <libc.h>
#include <bio.h>
int
Bputrune(Biobufhdr *bp, long c)
{
Rune rune;
char str[4];
int n;
rune = c;
if(rune < Runeself) {
Bputc(bp, rune);
return 1;
}
n = runetochar(str, &rune);
if(n == 0)
return Bbad;
if(Bwrite(bp, str, n) != n)
return Beof;
return n;
}