1 files changed, 23 insertions, 0 deletions
diff --git a/src/libbio/bputrune.c b/src/libbio/bputrune.c
new file mode 100644
index 00000000..a2eaa83e
--- /dev/null
+++ b/src/libbio/bputrune.c
@@ -0,0 +1,23 @@
+#include	"lib9.h"
+#include	<bio.h>
+#include	<utf.h>
+
+int
+Bputrune(Biobuf *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;
+}