From cccd44c00c98384e8aa92a55ac43c512c6f716d1 Mon Sep 17 00:00:00 2001
From: Vanessa <lly219@gmail.com>
Date: Mon, 20 Feb 2023 09:31:06 +0800
Subject: [PATCH] :bug: https://github.com/siyuan-note/siyuan/issues/5213

---
 app/src/asset/anno.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/app/src/asset/anno.ts b/app/src/asset/anno.ts
index d53deb72b..f5817fa7f 100644
--- a/app/src/asset/anno.ts
+++ b/app/src/asset/anno.ts
@@ -314,7 +314,7 @@ const getHightlightCoordsByRange = (pdf: any, color: string) => {
     // https://github.com/siyuan-note/siyuan/issues/5213
     const rangeContents = range.cloneContents();
     Array.from(rangeContents.children).forEach(item => {
-        if (item.tagName === "BR") {
+        if (item.tagName === "BR" && item.previousElementSibling && item.nextElementSibling) {
             const previousText = item.previousElementSibling.textContent;
             const nextText = item.nextElementSibling.textContent;
             if (previousText.endsWith("-") && /^[A-Za-z]$/.test(previousText.substring(previousText.length - 2, previousText.length - 1)) &&