epm_query_file: fix --short query for rpm

bin/epm

@@ -19,6 +19,7 @@
 
 PROGDIR=$(dirname "$0")
 PROGNAME=$(basename "$0")
+# TODO: pwd for ./epm and which for epm
 [ "$PROGDIR" = "." ] && PROGDIR=$(pwd)
 if [ "$0" = "/dev/stdin" ] || [ "$0" = "sh" ] ; then
     PROGDIR=""

bin/epm-query_file

@@ -141,7 +141,7 @@ __do_short_query()
     local CMD
     case $PMTYPE in
         *-rpm)
-            CMD="rpm -qf --queryformat %{NAME}\n"
+            CMD="rpm -qf --queryformat '%{NAME}\\n'"
             ;;
         apt-dpkg)
             showcmd dpkg -S "$1"