!squash pane

Author: tony

Diff for: src/libtmux/pane.py

@@ -356,7 +356,7 @@ def set_option(
         :exc:`exc.OptionError`, :exc:`exc.UnknownOption`,
         :exc:`exc.InvalidOption`, :exc:`exc.AmbiguousOption`
         """
-        flags: list[str] = []
+        flags: t.List[str] = []
         if isinstance(value, bool) and value:
             value = "on"
         elif isinstance(value, bool) and not value: