From 3357f8931188e704d77c7b03a5afdeb9d45bbb3d Mon Sep 17 00:00:00 2001
From: Dion Moult <dion@thinkmoult.com>
Date: Mon, 8 Apr 2024 17:19:17 +1000
Subject: [PATCH] Fix #4509. Don't show scary error message if you haven't
 specified a filter query.

---
 src/ifcopenshell-python/ifcopenshell/util/selector.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/ifcopenshell-python/ifcopenshell/util/selector.py b/src/ifcopenshell-python/ifcopenshell/util/selector.py
index 5933ff09a5..144fad9cf1 100644
--- a/src/ifcopenshell-python/ifcopenshell/util/selector.py
+++ b/src/ifcopenshell-python/ifcopenshell/util/selector.py
@@ -305,12 +305,13 @@ def filter_elements(
         # {#1=IfcWall(...), #2=IfcDoor(...)}
         print(elements)
     """
+    if not query:
+        return elements or set()
     if elements and not edit_in_place:
         elements = elements.copy()
     transformer = FacetTransformer(ifc_file, elements)
     transformer.transform(filter_elements_grammar.parse(query))
     return transformer.get_results()
-    return transformer.elements
 
 
 def set_element_value(