diff --git a/functions.sh b/functions.sh
index 09beb67..8718ac4 100755
--- a/functions.sh
+++ b/functions.sh
@@ -41,3 +41,8 @@ switch-wall() {
                         ;;
         esac
 }
+
+# handler for launching the script from non-login shells
+if [[ ${BASH_SOURCE[0]} == "${0}" ]]; then
+    "$@"
+fi