include output parameter

bin/overpass

@@ -13,6 +13,7 @@ function usage() {
   -t, --timeout~Query timeout in seconds (default: 900)
   -n, --name~Output filename
   -s, --server~Overpass server (default: https://overpass-api.de/api)
+  -o, --output~Output format (default: xml)
   ~
 EOF
 
@@ -35,6 +36,7 @@ provinces=()
 areaexpr=
 name=
 query=$1
+output="xml"
 
 # move the file argument, to parse the rest of options
 shift
@@ -57,6 +59,10 @@ while true; do
       name=$2
       shift 2
       ;;
+    -o|--output)
+      output=$2
+      shift 2
+      ;;
     -p|--provinces)
       # presets for group elements all in once
       if [[ "${2,,}" == "ccaa" ]]; then
@@ -97,7 +103,7 @@ function province() {
   esac
 
   cat <<EOF
-[out:xml][timeout:${timeout}];
+[out:${output}][timeout:${timeout}];
 ${area}->.searchArea;
 ${content_scoped}
 out meta;