diff --git a/check.t b/check.t
index 7eaccfc..ba3aaf9 100644
--- a/check.t
+++ b/check.t
@@ -1,4 +1,4 @@
-# $MirOS: src/bin/mksh/check.t,v 1.510 2012/01/03 15:32:05 tg Exp $
+# $MirOS: src/bin/mksh/check.t,v 1.511 2012/01/04 19:09:32 tg Exp $
 # $OpenBSD: bksl-nl.t,v 1.2 2001/01/28 23:04:56 niklas Exp $
 # $OpenBSD: history.t,v 1.5 2001/01/28 23:04:56 niklas Exp $
 # $OpenBSD: read.t,v 1.3 2003/03/10 03:48:16 david Exp $
@@ -29,7 +29,7 @@
 # http://www.freebsd.org/cgi/cvsweb.cgi/src/tools/regression/bin/test/regress.sh?rev=HEAD
 
 expected-stdout:
-	@(#)MIRBSD KSH R40 2012/01/03
+	@(#)MIRBSD KSH R40 2012/01/04
 description:
 	Check version of shell.
 stdin:
@@ -4999,6 +4999,29 @@ stdin:
 expected-stdout:
 	ok
 ---
+name: regression-66
+description:
+	Check that quoting is sane
+stdin:
+	ac_space=' '
+	ac_newline='
+	'
+	set | grep ^ac_ |&
+	set -A lines
+	while IFS= read -pr line; do
+		if [[ $line = *space* ]]; then
+			lines[0]=$line
+		else
+			lines[1]=$line
+		fi
+	done
+	for line in "${lines[@]}"; do
+		print -r -- "$line"
+	done
+expected-stdout:
+	ac_space=' '
+	ac_newline=$'\n'
+---
 name: readonly-0
 description:
 	Ensure readonly is honoured for assignments and unset
diff --git a/misc.c b/misc.c
index 34111c5..0191f87 100644
--- a/misc.c
+++ b/misc.c
@@ -29,7 +29,7 @@
 #include <grp.h>
 #endif
 
-__RCSID("$MirOS: src/bin/mksh/misc.c,v 1.180 2011/12/29 22:54:20 tg Exp $");
+__RCSID("$MirOS: src/bin/mksh/misc.c,v 1.181 2012/01/04 19:09:35 tg Exp $");
 
 /* type bits for unsigned char */
 unsigned char chtypes[UCHAR_MAX + 1];
@@ -1037,10 +1037,8 @@ print_value_quoted(struct shf *shf, const char *s)
 	bool inquote = true;
 
 	/* first, check whether any quotes are needed */
-	while ((c = *p++) != 0)
-		if (c < 32)
-			break;
-		else if (ctype(*p, C_QUOTE))
+	while ((c = *p++) >= 32)
+		if (ctype(c, C_QUOTE))
 			inquote = false;
 
 	p = (const unsigned char *)s;
diff --git a/sh.h b/sh.h
index 81a943f..1e30754 100644
--- a/sh.h
+++ b/sh.h
@@ -152,9 +152,9 @@
 #endif
 
 #ifdef EXTERN
-__RCSID("$MirOS: src/bin/mksh/sh.h,v 1.518 2012/01/03 01:01:44 tg Exp $");
+__RCSID("$MirOS: src/bin/mksh/sh.h,v 1.519 2012/01/04 19:09:36 tg Exp $");
 #endif
-#define MKSH_VERSION "R40 2012/01/03"
+#define MKSH_VERSION "R40 2012/01/04"
 
 /* arithmetic types: C implementation */
 #if !HAVE_CAN_INTTYPES