refactor: move storage:help to internal-functions

plugins/storage/commands

@@ -1,29 +1,11 @@
 #!/usr/bin/env bash
 [[ " storage:help help " == *" $1 "* ]] || exit "$DOKKU_NOT_IMPLEMENTED_EXIT"
+source "$PLUGIN_AVAILABLE_PATH/storage/internal-functions"
 set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
 
 case "$1" in
   help | storage:help)
-    help_content_func () {
-      declare desc="return storage plugin help content"
-      cat<<help_content
-    storage, Mount local volume / directories inside containers
-    storage:list <app>, List bind mounts for app's container(s) (host:container)
-    storage:mount <app> <host-dir:container-dir>, Create a new bind mount
-    storage:unmount <app> <host-dir:container-dir>, Remove an existing bind mount
-help_content
-    }
-
-    if [[ $1 = "shell:help" ]] ; then
-        echo -e 'Usage: dokku storage:COMMAND'
-        echo ''
-        echo 'Mount local volume / directories inside containers.'
-        echo ''
-        echo 'Additional commands:'
-        help_content_func | sort | column -c2 -t -s,
-    else
-        help_content_func
-    fi
+    storage_help_cmd "$@"
     ;;
 
   *)

plugins/storage/internal-functions

@@ -0,0 +1,28 @@
+#!/usr/bin/env bash
+set -eo pipefail; [[ $DOKKU_TRACE ]] && set -x
+
+storage_help_content_func() {
+    declare desc="return storage plugin help content"
+    cat<<help_content
+    storage:list <app>, List bind mounts for app's container(s) (host:container)
+    storage:mount <app> <host-dir:container-dir>, Create a new bind mount
+    storage:unmount <app> <host-dir:container-dir>, Remove an existing bind mount
+help_content
+}
+
+storage_help_cmd() {
+  if [[ $1 = "storage:help" ]] ; then
+    echo -e 'Usage: dokku storage[:COMMAND]'
+    echo ''
+    echo 'Mount local volume / directories inside containers.'
+    echo ''
+    echo 'Additional commands:'
+    storage_help_content_func | sort | column -c2 -t -s,
+  elif [[ $(ps -o command= $PPID) == *"--all"* ]]; then
+    storage_help_content_func
+  else
+    cat<<help_desc
+    storage, Mount local volume / directories inside containers
+help_desc
+  fi
+}