--- WebIDL.py+++ WebIDL.py@@ -1988,6 +1988,7 @@ class IDLInterface(IDLInterfaceOrNamespace): or identifier == "WantsEventListenerHooks"
or identifier == "Serializable"
or identifier == "Abstract"
+ or identifier == "Inline" ):
# Known extended attributes that do not take values
if not attr.noArguments():