[referenced_patterns] don't visit tops twice

2026-04-06 15:30:37 -07:00 · 2026-04-06 15:30:37 -07:00 · c501a8ff99
commit c501a8ff99
parent fd2698c503
1 changed files with 2 additions and 0 deletions
--- a/masque/library.py
+++ b/masque/library.py
@ -180,6 +180,8 @@ class ILibraryView(Mapping[str, 'Pattern'], metaclass=ABCMeta):

        if isinstance(tops, str):
            tops = (tops,)
+        tops = set(tops)
+        skip |= tops     # don't re-visit tops

        # Get referenced patterns for all tops
        targets = set()