diff --git a/bin/compose b/bin/compose
index cbbb2ec..9346485 100755
--- a/bin/compose
+++ b/bin/compose
@@ -117,7 +117,6 @@ clean_cache() {
 }
 
 
-
 usage="$exname SERVICE"'
 
 Deploy and manage a swarm of containers to provide services based on
@@ -291,6 +290,7 @@ docker_has_image() {
 }
 export -f docker_has_image
 
+
 cmd_on_base_image() {
     local service="$1" base_image
     shift
@@ -299,6 +299,7 @@ cmd_on_base_image() {
 }
 export -f cmd_on_base_image
 
+
 cached_cmd_on_base_image() {
     local service="$1" cache_file="$state_tmpdir/$FUNCNAME.cache.$(echo "$*" | md5_compat)"
     shift
@@ -323,10 +324,12 @@ export -f image_exposed_ports_0
 ## Generic
 ##
 
+
 fn.exists() {
     declare -F "$1" >/dev/null
 }
 
+
 str_pattern_matches() {
     local str="$1"
     shift
@@ -355,6 +358,7 @@ gen_password() {
 }
 export -f gen_password
 
+
 file_put() {
     local TARGET="$1"
     mkdir -p "$(dirname "$TARGET")" &&
@@ -370,6 +374,7 @@ file_put_0() {
 }
 export -f file_put_0
 
+
 fetch_file() {
     local src="$1"
 
@@ -390,6 +395,7 @@ fetch_file() {
 }
 export -f fetch_file
 
+
 ## receives stdin content to decompress on stdout
 ## stdout content should be tar format.
 uncompress_file() {
@@ -412,6 +418,7 @@ uncompress_file() {
 }
 export -f uncompress_file
 
+
 get_file() {
     local src="$1"
 
@@ -437,6 +444,7 @@ _clean_docker() {
 }
 export -f _clean_docker
 
+
 get_service_base_image_dir_uid_gid() {
     local service="$1" dir="$2" uid_gid
     uid_gid=$(cached_cmd_on_base_image "$service" "stat -c '%u %g' '$dir'") || {
@@ -448,6 +456,7 @@ get_service_base_image_dir_uid_gid() {
 }
 export -f get_service_base_image_dir_uid_gid
 
+
 are_files_locked_in_dir() {
     local dir="$1" device hdev ldev
     device=$(stat -c %d "$dir") || {
@@ -472,6 +481,7 @@ are_files_locked_in_dir() {
 }
 export -f are_files_locked_in_dir
 
+
 export _PID="$$"
 ensure_db_docker_running () {
     local _STATE_FILE
@@ -580,6 +590,7 @@ ensure_db_docker_running () {
 }
 export -f ensure_db_docker_running
 
+
 ## Require to set $db_docker_opts if needed, and $DB_PASSFILE
 ##
 _dcmd() {
@@ -635,6 +646,7 @@ get_docker_ips() {
 }
 export -f get_docker_ips
 
+
 get_docker_ip() {
     local name="$1"
     get_docker_ips "$name"
@@ -863,6 +875,7 @@ _get_docker_compose_service_mixin() {
 }
 export -f _get_docker_compose_service_mixin
 
+
 ##
 ## Get full `docker-compose.yml` format for all listed services (and
 ## their deps)
@@ -970,6 +983,7 @@ _get_compose_service_def_cached () {
 }
 export -f _get_compose_service_def_cached
 
+
 ## XXXvlab: a lot to be done to cache the results
 get_compose_service_def () {
     local service="$1" docker_compose cache_file="$state_tmpdir/$FUNCNAME.cache.$1" \
@@ -1005,6 +1019,7 @@ _get_service_charm_cached () {
 }
 export -f _get_service_charm_cached
 
+
 get_service_charm () {
     local service="$1"
     if [ -z "$service" ]; then
@@ -1017,6 +1032,7 @@ get_service_charm () {
 }
 export -f get_service_charm
 
+
 ## built above the docker-compose abstraction, so it relies on the
 ## full docker-compose.yml to be already built.
 get_service_def () {
@@ -1106,6 +1122,7 @@ get_charm_tech_dep_orientation_for_relation() {
 }
 export -f get_charm_tech_dep_orientation_for_relation
 
+
 ##
 ## Use compose file to get deps, and relation definition in metadata.yml
 ## for tech-dep attribute.
@@ -1200,6 +1217,7 @@ get_ordered_service_dependencies() {
 }
 export -f get_ordered_service_dependencies
 
+
 run_service_hook () {
     local action="$1" service subservice subservices loaded
     shift
@@ -1397,6 +1415,7 @@ _config_merge() {
 }
 export -f _config_merge
 
+
 ## XXXvlab; this can be used only in relation, I'd like to use it in init.
 config-add() {
     local metadata="$1"
@@ -1404,6 +1423,7 @@ config-add() {
 }
 export -f config-add
 
+
 ## XXXvlab; this can be used only in relation, I'd like to use it in init.
 init-config-add() {
     local metadata="$1"
@@ -1581,6 +1601,7 @@ _get_compose_relations_cached () {
 }
 export -f _get_compose_relations_cached
 
+
 get_compose_relations () {
     local service="$1" cache_file="$state_tmpdir/$FUNCNAME.cache.$1" \
           compose_def
@@ -1933,6 +1954,7 @@ _get_master_service_for_service_cached () {
 }
 export -f _get_master_service_for_service_cached
 
+
 get_master_service_for_service() {
     local service="$1" cache_file="$state_tmpdir/$FUNCNAME.cache.$1" \
           charm metadata result
@@ -2087,6 +2109,7 @@ _save() {
 }
 export -f _save
 
+
 get_default_project_name() {
     if [ "$DEFAULT_PROJECT_NAME" ]; then
         echo "$DEFAULT_PROJECT_NAME"
@@ -2167,6 +2190,7 @@ launch_docker_compose() {
 }
 export -f launch_docker_compose
 
+
 get_compose_yml_location() {
     if ! [ -z ${COMPOSE_YML_FILE+x} ]; then   ## if set, even if empty
         echo "$COMPOSE_YML_FILE"
@@ -2198,6 +2222,7 @@ get_compose_yml_location() {
 }
 export -f get_compose_yml_location
 
+
 get_compose_yml_content() {
     local cache_file="$state_tmpdir/$FUNCNAME.cache"
     if [ -e "$cache_file" ]; then
@@ -2294,6 +2319,7 @@ get_docker_compose_help_msg() {
         tee "$cache_file" || return 1
 }
 
+
 get_docker_compose_usage() {
     local action="$1" cache_file="$CACHEDIR/$FUNCNAME.cache.$(echo "$1"; cat "$(which docker-compose)" | md5_compat)" \
           docker_compose_help_msg
@@ -2330,6 +2356,7 @@ get_docker_compose_opts_help() {
         tee "$cache_file" || return 1
 }
 
+
 get_docker_compose_commands_help() {
     local action="$1" cache_file="$CACHEDIR/$FUNCNAME.cache.$(echo "$1"; cat "$(which docker-compose)" | md5_compat)" \
           docker_compose_help_msg
@@ -2392,10 +2419,10 @@ remove_options_in_option_help_msg() {
 }
 
 
-
 _MULTIOPTION_REGEX='^((-[a-zA-Z]|--[a-zA-Z0-9-]+)(, )?)+'
 _MULTIOPTION_REGEX_LINE_FILTER=$_MULTIOPTION_REGEX'(\s|=)'
 
+
 multi_opts_filter() {
      egrep "$_MULTIOPTION_REGEX_LINE_FILTER" |
         sed -r "s/^($_MULTIOPTION_REGEX)(\s|=).*$/\1/g" |
@@ -2415,6 +2442,7 @@ get_docker_compose_multi_opts_list() {
     echo "$opts_list" | multi_opts_filter
 }
 
+
 get_docker_compose_single_opts_list() {
     local action="$1" opts_list
     opts_list=$(get_docker_compose_opts_list "$action") || return 1
@@ -2447,6 +2475,7 @@ display_help() {
     get_docker_compose_commands_help | sed -r "s/  ([a-z]+)(\s+)/  ${DARKCYAN}\1${NORMAL}\2/g"
 }
 
+
 _graph_service() {
     local service="$1" base="$1"
 
@@ -2557,12 +2586,14 @@ fi)
 EOF
 }
 
+
 cla_contains () {
     local e
     for e in "${@:2}"; do [[ "$e" == "$1" ]] && return 0; done
     return 1
 }
 
+
 filter_docker_compose_help_message() {
     cat - |
         sed -r "s/docker-compose run/${DARKWHITE}compose${NORMAL} ${DARKCYAN}$action${NORMAL}/g;
@@ -2573,6 +2604,7 @@ filter_docker_compose_help_message() {
                 s/docker-compose/${DARKWHITE}compose${NORMAL}/g"
 }
 
+
 graph() {
     local services=("$@")
     declare -A entries
@@ -2603,6 +2635,7 @@ EOF
     echo "}"
 }
 
+
 cached_wget() {
     local cache_file="$CACHEDIR/$FUNCNAME.cache.$(echo "$*" | md5_compat)" \
           url="$1"