From f9afdfa1431420ddabae5247f2ff4ab970eb05a2 Mon Sep 17 00:00:00 2001
From: Emil Ernerfeldt <emil.ernerfeldt@gmail.com>
Date: Sun, 5 Sep 2021 11:11:31 +0200
Subject: [PATCH] TextEdit: left/right arrows move cursor to start/end of
 selection

Closes https://github.com/emilk/egui/issues/611
---
 egui/src/widgets/text_edit.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/egui/src/widgets/text_edit.rs b/egui/src/widgets/text_edit.rs
index da8e6e5c..6f00003f 100644
--- a/egui/src/widgets/text_edit.rs
+++ b/egui/src/widgets/text_edit.rs
@@ -1135,6 +1135,15 @@ fn on_key_press<S: TextBuffer>(
             Some(CCursorPair::one(ccursor))
         }
 
+        Key::ArrowLeft | Key::ArrowRight if modifiers.is_none() && !cursorp.is_empty() => {
+            if key == Key::ArrowLeft {
+                *cursorp = CursorPair::one(cursorp.sorted()[0]);
+            } else {
+                *cursorp = CursorPair::one(cursorp.sorted()[1]);
+            }
+            None
+        }
+
         Key::ArrowLeft | Key::ArrowRight | Key::ArrowUp | Key::ArrowDown | Key::Home | Key::End => {
             move_single_cursor(&mut cursorp.primary, galley, key, modifiers);
             if !modifiers.shift {