[fix] deletion fixes+

and some smaller cosmetic changes

butils.py

@@ -647,6 +647,17 @@ def is_glyph_used(glyph_alternates):
     return False
 
 
+def clean_text_properties():
+    abc3d_data = bpy.context.scene.abc3d_data
+    remove_these = []
+    for i, text_properties in enumerate(abc3d_data.available_texts):
+        if len(text_properties.text_object.users_collection) <= 0:
+            remove_these.append(i)
+    remove_these.reverse()
+    for i in remove_these:
+        abc3d_data.available_texts.remove(i)
+
+
 def clean_fontcollection(fontcollection=None):
     if fontcollection is None:
         fontcollection = bpy.data.collections.get("ABC3D")
@@ -1336,6 +1347,21 @@ def test_finding():
     transfer_text_object_to_text_properties(o, t)
 
 
+def is_text_object_legit(text_object):
+    must_have_keys = [
+        get_key("font_name"),
+        get_key("face_name"),
+        get_key("text"),
+        get_key("type"),
+    ]
+    for key in must_have_keys:
+        if key not in text_object:
+            return False
+    if text_object[get_key("type")] != "textobject":
+        return False
+    return True
+
+
 # def detect_texts():
 # scene = bpy.context.scene
 # abc3d_data = scene.abc3d_data
@@ -1478,6 +1504,8 @@ def set_text_on_curve(
     mom = text_properties.text_object
     if mom.type != "CURVE":
         return False
+    if len(mom.users_collection) < 1:
+        return False
 
     distribution_type = "CALCULATE" if is_bezier(mom) else "FOLLOW_PATH"
 
@@ -2042,8 +2070,6 @@ def add_default_metrics_to_objects(objects=None, overwrite_existing=False):
     targets = []
     reference_bound_box = None
     for o in objects:
-        if not hasattr(o, "parent"):
-            print(f"{o.name} has not a PARENTNTNTNTNTNNTNTNTNTNTN")
         is_possibly_glyph = is_glyph(o)
         if is_possibly_glyph:
             metrics = []