From 38c236aa029f376c79bce63171d41d7fc32248b2 Mon Sep 17 00:00:00 2001
From: Peter Bieringer <pb@bieringer.de>
Date: Thu, 5 Dec 2024 07:54:52 +0100
Subject: [PATCH] fix-issue-1635: code

---
 radicale/item/filter.py | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/radicale/item/filter.py b/radicale/item/filter.py
index 23b65987..f69284ce 100644
--- a/radicale/item/filter.py
+++ b/radicale/item/filter.py
@@ -274,8 +274,11 @@ def visit_time_ranges(vobject_item: vobject.base.Component, child_name: str,
             if hasattr(comp, "recurrence_id") and comp.recurrence_id.value:
                 recurrences.append(comp.recurrence_id.value)
                 if comp.rruleset:
-                    # Prevent possible infinite loop
-                    raise ValueError("Overwritten recurrence with RRULESET")
+                    if comp.rruleset._len == None:
+                        logger.warning("Ignore empty RRULESET in item at RECURRENCE-ID with value '%s' and UID '%s'", comp.recurrence_id.value, comp.uid.value)
+                    else:
+                        # Prevent possible infinite loop
+                        raise ValueError("Overwritten recurrence with RRULESET")
                 rec_main = comp
                 yield comp, True, []
             else: