From 1f95987d1acf5f9b5e7c5cb94ff4ad179967d4d8 Mon Sep 17 00:00:00 2001
From: Jordan Atwood <jordan.atwood423@gmail.com>
Date: Thu, 7 Jan 2021 15:06:53 -0800
Subject: [PATCH] ChatboxTextInput: Improve open selection left/right handling

Previously, when pressing left or right without Shift pressed, the
cursor would end up one character left or right of the start of the
selection, which is not expected behavior compared to how most programs
handle this case. This commit changes this behavior to place the cursor
at the start or end of the selection when pressing left or right,
respectively, when a selection is active.
---
 .../client/game/chatbox/ChatboxTextInput.java  | 18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/runelite-client/src/main/java/net/runelite/client/game/chatbox/ChatboxTextInput.java b/runelite-client/src/main/java/net/runelite/client/game/chatbox/ChatboxTextInput.java
index a11aad1e1c..89cc771cc4 100644
--- a/runelite-client/src/main/java/net/runelite/client/game/chatbox/ChatboxTextInput.java
+++ b/runelite-client/src/main/java/net/runelite/client/game/chatbox/ChatboxTextInput.java
@@ -753,11 +753,25 @@ public class ChatboxTextInput extends ChatboxInput implements KeyListener, Mouse
 				return;
 			case KeyEvent.VK_LEFT:
 				ev.consume();
-				newPos--;
+				if (cursorStart != cursorEnd)
+				{
+					newPos = cursorStart;
+				}
+				else
+				{
+					newPos--;
+				}
 				break;
 			case KeyEvent.VK_RIGHT:
 				ev.consume();
-				newPos++;
+				if (cursorStart != cursorEnd)
+				{
+					newPos = cursorEnd;
+				}
+				else
+				{
+					newPos++;
+				}
 				break;
 			case KeyEvent.VK_UP:
 				ev.consume();