fixed Message.filter_tags

2023-08-30 08:20:25 +02:00
parent 73d2a9ea3b
commit 8e1cdee3bf
2 changed files with 23 additions and 7 deletions
@@ -436,13 +436,14 @@ class Message():
        Filter tags based on their prefix (i. e. the tag starts with a given string)
        or some contained string.
        """
-        res_tags = self.tags
-        if res_tags:
-            if prefix and len(prefix) > 0:
-                res_tags -= {tag for tag in res_tags if not tag.startswith(prefix)}
-            if contain and len(contain) > 0:
-                res_tags -= {tag for tag in res_tags if contain not in tag}
-        return res_tags or set()
+        if not self.tags:
+            return set()
+        res_tags = self.tags.copy()
+        if prefix and len(prefix) > 0:
+            res_tags -= {tag for tag in res_tags if not tag.startswith(prefix)}
+        if contain and len(contain) > 0:
+            res_tags -= {tag for tag in res_tags if contain not in tag}
+        return res_tags

    def tags_str(self, prefix: Optional[str] = None, contain: Optional[str] = None) -> str:
        """