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1 #include "lib9.h"2 #include <bio.h>3 #include <utf.h>5 int6 Bputrune(Biobuf *bp, long c)7 {8 Rune rune;9 char str[4];10 int n;12 rune = c;13 if(rune < Runeself) {14 Bputc(bp, rune);15 return 1;16 }17 n = runetochar(str, &rune);18 if(n == 0)19 return Bbad;20 if(Bwrite(bp, str, n) != n)21 return Beof;22 return n;23 }