mtree includes must be directories

client/lib/main.sh

@@ -201,6 +201,7 @@ sync() {
             for i in "${!rsync_includes[@]}"; do
                 include="${rsync_includes[i]}"
 
+                if [ -d "${include}" ]; then
                     # … but exclude for mtree what will be excluded by Rsync
                     mtree_excludes_file="$(mktemp --tmpdir "${PROGNAME}.${sync_name}.mtree-excludes.XXXXXX")"
                     add_to_temp_files "${mtree_excludes_file}"
@@ -214,6 +215,7 @@ sync() {
 
                     ${mtree_bin} -x -c -p "${include}" -X "${mtree_excludes_file}" > "${mtree_file}"
                     mtree_files+=("${mtree_file}")
+                fi
             done
 
             if [ "${#mtree_files[@]}" -le 0 ]; then