From f4a87afab7b08e0eebe3e9f66b40f2ada7499730 Mon Sep 17 00:00:00 2001
From: "trougnouf (Benoit Brummer)" <trougnouf@gmail.com>
Date: Tue, 19 Jul 2022 00:15:33 +0200
Subject: [PATCH] fix #715 (Main Component is missing when only recurrence id
 exists) with balrok's patch

---
 radicale/item/filter.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/radicale/item/filter.py b/radicale/item/filter.py
index 587dc367..217f503c 100644
--- a/radicale/item/filter.py
+++ b/radicale/item/filter.py
@@ -225,6 +225,7 @@ def visit_time_ranges(vobject_item: vobject.base.Component, child_name: str,
     def get_children(components: Iterable[vobject.base.Component]) -> Iterator[
                          Tuple[vobject.base.Component, bool, List[date]]]:
         main = None
+        rec_main = None
         recurrences = []
         for comp in components:
             if hasattr(comp, "recurrence_id") and comp.recurrence_id.value:
@@ -232,11 +233,14 @@ def visit_time_ranges(vobject_item: vobject.base.Component, child_name: str,
                 if comp.rruleset:
                     # Prevent possible infinite loop
                     raise ValueError("Overwritten recurrence with RRULESET")
+                rec_main = comp
                 yield comp, True, []
             else:
                 if main is not None:
                     raise ValueError("Multiple main components")
                 main = comp
+        if main is None and len(recurrences) == 1:
+            main = rec_main
         if main is None:
             raise ValueError("Main component missing")
         yield main, False, recurrences