From 223c8cafd475c45f0bf3c7ed010b8e5dde32943d Mon Sep 17 00:00:00 2001
From: Vincent Chan <okcdz@diverse.space>
Date: Wed, 10 Aug 2022 18:07:25 +0800
Subject: [PATCH] fix: crashes when deleting emoji

---
 .../internal_key_event_handlers/delete_text_handler.dart    | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/frontend/app_flowy/packages/flowy_editor/lib/src/service/internal_key_event_handlers/delete_text_handler.dart b/frontend/app_flowy/packages/flowy_editor/lib/src/service/internal_key_event_handlers/delete_text_handler.dart
index 1bb6872ff4..5e2fdfd453 100644
--- a/frontend/app_flowy/packages/flowy_editor/lib/src/service/internal_key_event_handlers/delete_text_handler.dart
+++ b/frontend/app_flowy/packages/flowy_editor/lib/src/service/internal_key_event_handlers/delete_text_handler.dart
@@ -25,7 +25,7 @@ FlowyKeyEventHandler deleteTextHandler = (editorState, event) {
   TransactionBuilder transactionBuilder = TransactionBuilder(editorState);
   if (textNodes.length == 1) {
     final textNode = textNodes.first;
-    final index = selection.start.offset - 1;
+    final index = textNode.delta.prevRunePosition(selection.start.offset);
     if (index < 0) {
       // 1. style
       if (textNode.subtype != null) {
@@ -62,8 +62,8 @@ FlowyKeyEventHandler deleteTextHandler = (editorState, event) {
       if (selection.isCollapsed) {
         transactionBuilder.deleteText(
           textNode,
-          selection.start.offset - 1,
-          1,
+          index,
+          selection.start.offset - index,
         );
       } else {
         transactionBuilder.deleteText(