D18481.diff
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	Index: head/libexec/rc/rc.subr
	===================================================================
	--- head/libexec/rc/rc.subr
	+++ head/libexec/rc/rc.subr
	@@ -58,17 +58,29 @@
	# ---------

	# list_vars pattern
	-# List vars matching pattern.
	+# List variables matching glob pattern.
	#
	list_vars()
	{
	- set \| { while read LINE; do
	- var="${LINE%%=*}"
	- case "$var" in
	- "$LINE"\|[!a-zA-Z0-9_]) continue ;;
	- $1) echo $var
	+ # Localize 'set' option below.
	+ local -
	+ local IFS=$'\n' line varname
	+
	+ # Disable path expansion in unquoted 'for' parameters below.
	+ set -o noglob
	+
	+ for line in $(set); do
	+ varname="${line%%=*}"
	+
	+ case "$varname" in
	+ "$line"\|[!a-zA-Z0-9_])
	+ continue
	+ ;;
	+ $1)
	+ echo $varname
	+ ;;
	esac
	- done; }
	+ done
	}

	# set_rcvar [var] [defval] [desc]