epm-search: add -- before search arg for support search "-some"

bin/epm-search

@@ -23,31 +23,31 @@ local CMD
 local string="$1"
 case $PMTYPE in
 	apt-rpm|apt-dpkg)
-		CMD="apt-cache search"
+		CMD="apt-cache search --"
 		;;
 	urpm-rpm)
-		CMD="urpmq -y"
+		CMD="urpmq -y --"
 		;;
 	pkgsrc)
-		CMD="pkg_info -x"
+		CMD="pkg_info -x --"
 		;;
 	emerge)
-		CMD="emerge --search"
+		CMD="emerge --search --"
 		;;
 	pacman)
-		CMD="pacman -Ss"
+		CMD="pacman -Ss --"
 		;;
 	aura)
-		CMD="aura -As"
+		CMD="aura -As --"
 		;;
 	yum-rpm)
-		CMD="yum search"
+		CMD="yum search --"
 		;;
 	dnf-rpm)
-		CMD="dnf search"
+		CMD="dnf search --"
 		;;
 	zypper-rpm)
-		CMD="zypper search"
+		CMD="zypper search --"
 		;;
 	mpkg)
 		CMD="mpkg search"
@@ -65,7 +65,7 @@ case $PMTYPE in
 	slackpkg)
 		# FIXME
 		echo "Note: case sensitive search"
-		CMD="/usr/sbin/slackpkg search"
+		CMD="/usr/sbin/slackpkg search --"
 		;;
 	homebrew)
 		CMD="brew search"