fix: add not_supported_argument()

quickget

@@ -146,7 +146,7 @@ function show_os_info() {
      while getopts ":12345" opt; do
         case $opt in
           1|2|3|4|5) os_info "${2}" | cut -d'|' -f${opt};;
-          *) echo "Wrong choice!" && exit 1;;
+          *) error_not_supported_argument;;
         esac
     done
 }
@@ -253,6 +253,13 @@ function error_not_supported_lang() {
     exit 1
 }
 
+function error_not_supported_argument() {
+    echo "ERROR! Not supported argument"
+    echo "To see all possible arguments, use:"
+    echo "   quickget -h  or  quickget --help"
+    exit 1
+}
+
 function handle_missing() {
     # Handle odd missing Fedora combinations
     case "${OS}" in
@@ -3431,6 +3438,9 @@ case "${1}" in
   '--list'|'-l')
     list_supported
     ;;
+  -*)
+    error_not_supported_argument
+    ;;
 esac
 
 if [ -n "${1}" ]; then