From 52cf15fc23f4fa30fc344a63ab5f28665a57d29e Mon Sep 17 00:00:00 2001
From: Kovid Goyal <kovid@kovidgoyal.net>
Date: Mon, 14 Sep 2020 09:04:40 +0530
Subject: [PATCH] Fix #1895472 [Private
 bug](https://bugs.launchpad.net/calibre/+bug/1895472)

---
 src/pyj/range_utils.pyj   | 2 +-
 src/pyj/read_book/cfi.pyj | 6 ++++--
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/pyj/range_utils.pyj b/src/pyj/range_utils.pyj
index 803d608543..1b2f3304b6 100644
--- a/src/pyj/range_utils.pyj
+++ b/src/pyj/range_utils.pyj
@@ -114,7 +114,7 @@ def create_wrapper_function(wrapper_elem, r, intersecting_wrappers, process_wrap
             current_range.setEnd(node, end_offset)
             end_node = current_wrapper
             end_offset = 1
-        crw = node.parentNode.dataset.calibreRangeWrapper
+        crw = node.parentNode?.dataset?.calibreRangeWrapper
         if crw:
             intersecting_wrappers[crw] = True
         current_range.surroundContents(current_wrapper)
diff --git a/src/pyj/read_book/cfi.pyj b/src/pyj/read_book/cfi.pyj
index c3b5b7e741..16089e1da4 100644
--- a/src/pyj/read_book/cfi.pyj
+++ b/src/pyj/read_book/cfi.pyj
@@ -389,9 +389,11 @@ def decode(cfi, doc):
         orig_offset = offset
         if node.parentNode?.nodeType is Node.ELEMENT_NODE and node.parentNode.dataset.calibreRangeWrapper:
             node = node.parentNode
-        node, offset, ok = node_for_text_offset(node.parentNode.childNodes, offset, node)
+        qnode, offset, ok = node_for_text_offset(node.parentNode.childNodes, offset, node)
         if not ok:
             error = "Offset out of range: " + orig_offset
+        if qnode:
+            node = qnode
         decoded.offset = offset
 
     decoded.node = node
@@ -575,7 +577,7 @@ def at(x, y, doc):  # {{{
 def decode_with_range(cfi, doc):  # {{{
     doc = doc or window.document
     decoded = decode(cfi, doc)
-    if not decoded:
+    if not decoded or not decoded.node:
         return None
     node = decoded.node
     ndoc = node.ownerDocument