From da019dfdd5021091e13590a7cf423d64691cc536 Mon Sep 17 00:00:00 2001
From: Warner Losh <imp@FreeBSD.org>
Date: Tue, 17 May 2016 21:23:13 +0000
Subject: [PATCH] Add support for %S to libstand as well so /boot/loader and
 friends can use it.

---
 lib/libstand/printf.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/lib/libstand/printf.c b/lib/libstand/printf.c
index fef53416561..71e313cc55a 100644
--- a/lib/libstand/printf.c
+++ b/lib/libstand/printf.c
@@ -204,6 +204,7 @@ kvprintf(char const *fmt, kvprintf_fn_t *func, void *arg, int radix, va_list ap)
 	char nbuf[MAXNBUF];
 	char *d;
 	const char *p, *percent, *q;
+	uint16_t *S;
 	u_char *up;
 	int ch, n;
 	uintmax_t num;
@@ -398,6 +399,10 @@ reswitch:	switch (ch = (u_char)*fmt++) {
 				while (width--)
 					PCHAR(padc);
 			break;
+		case 'S':	/* Assume console can cope with wide chars */
+			for (S = va_arg(ap, uint16_t *); *S != 0; S++)
+				PCHAR(*S);
+ 			break;
 		case 't':
 			tflag = 1;
 			goto reswitch;