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From: Devin Teske <dteske@FreeBSD.org>
Date: Sun, 17 Jun 2018 06:25:32 +0000 (UTC)
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Subject: svn commit: r335281 - head/usr.sbin/bsdconfig/share
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Author: dteske
Date: Sun Jun 17 06:25:32 2018
New Revision: 335281
URL: https://svnweb.freebsd.org/changeset/base/335281

Log:
  sysrc.subr: Fix display when value is "-n"
  
  PR:		bin/226406
  Reported by:	Marius Halden <marius.halden@modirum.com>
  MFC after:	1 week
  X-MFC-to:	stable/11
  Sponsored by:	Smule, Inc.

Modified:
  head/usr.sbin/bsdconfig/share/sysrc.subr

Modified: head/usr.sbin/bsdconfig/share/sysrc.subr
==============================================================================
--- head/usr.sbin/bsdconfig/share/sysrc.subr	Sun Jun 17 06:03:48 2018	(r335280)
+++ head/usr.sbin/bsdconfig/share/sysrc.subr	Sun Jun 17 06:25:32 2018	(r335281)
@@ -200,7 +200,7 @@ f_sysrc_get()
 		# such as "${varname?}" and "${varname:?}" (see "Parameter
 		# Expansion" in sh(1) for more information).
 		#
-		eval echo '"${'"$1"'}"' 2> /dev/null
+		eval printf "'%s\\n'" '"${'"$1"'}"' 2> /dev/null
 	)
 }
 
@@ -338,7 +338,7 @@ f_sysrc_get_default()
 		# such as "${varname?}" and "${varname:?}" (see "Parameter
 		# Expansion" in sh(1) for more information).
 		#
-		eval echo '"${'"$1"'}"' 2> /dev/null
+		eval printf "'%s\\n'" '"${'"$1"'}"' 2> /dev/null
 	)
 }