From ca45b1d00b7c365399ea444d98663567d25d3a4e Mon Sep 17 00:00:00 2001
From: Cristopher Solis <cristopher.solis@taringa.net>
Date: Fri, 13 Oct 2023 09:08:19 -0500
Subject: [PATCH] fix: fix android backspace bug (#5077)

---
 packages/lexical/src/LexicalEvents.ts | 5 +++++
 packages/shared/src/environment.ts    | 3 +++
 2 files changed, 8 insertions(+)

diff --git a/packages/lexical/src/LexicalEvents.ts b/packages/lexical/src/LexicalEvents.ts
index 52ddd4c68a3..36c2bfed985 100644
--- a/packages/lexical/src/LexicalEvents.ts
+++ b/packages/lexical/src/LexicalEvents.ts
@@ -13,6 +13,7 @@ import type {TextNode} from './nodes/LexicalTextNode';
 
 import {
   CAN_USE_BEFORE_INPUT,
+  IS_ANDROID,
   IS_APPLE_WEBKIT,
   IS_FIREFOX,
   IS_IOS,
@@ -515,6 +516,10 @@ function onBeforeInput(event: InputEvent, editor: LexicalEditor): void {
 
       if ($isRangeSelection(selection)) {
         // Used for handling backspace in Android.
+        if (IS_ANDROID) {
+          $setCompositionKey(selection.anchor.key);
+        }
+
         if (
           isPossiblyAndroidKeyPress(event.timeStamp) &&
           editor.isComposing() &&
diff --git a/packages/shared/src/environment.ts b/packages/shared/src/environment.ts
index bb7761bc92c..61f1985d89f 100644
--- a/packages/shared/src/environment.ts
+++ b/packages/shared/src/environment.ts
@@ -40,6 +40,9 @@ export const IS_IOS: boolean =
   /iPad|iPhone|iPod/.test(navigator.userAgent) &&
   !window.MSStream;
 
+export const IS_ANDROID: boolean =
+  CAN_USE_DOM && /Android/.test(navigator.userAgent);
+
 // Keep these in case we need to use them in the future.
 // export const IS_WINDOWS: boolean = CAN_USE_DOM && /Win/.test(navigator.platform);
 export const IS_CHROME: boolean =