From 3310dc79db2470e47e1295505cf8c870d1b7e566 Mon Sep 17 00:00:00 2001
From: Zero <46195892+Atreyagaurav@users.noreply.github.com>
Date: Fri, 16 May 2025 17:26:14 -0400
Subject: [PATCH] Fix `text_editor` syntax highlighting on paste

Fixes #2946.
---
 graphics/src/text/editor.rs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/graphics/src/text/editor.rs b/graphics/src/text/editor.rs
index 62e62f68..0051c109 100644
--- a/graphics/src/text/editor.rs
+++ b/graphics/src/text/editor.rs
@@ -369,6 +369,12 @@ impl editor::Editor for Editor {
 
             // Editing events
             Action::Edit(edit) => {
+                let topmost_line_before_edit = editor
+                    .selection_bounds()
+                    .map(|(start, _)| start)
+                    .unwrap_or_else(|| editor.cursor())
+                    .line;
+
                 match edit {
                     Edit::Insert(c) => {
                         editor.action(
@@ -417,7 +423,8 @@ impl editor::Editor for Editor {
                     .map(|(start, _)| start)
                     .unwrap_or(cursor);
 
-                internal.topmost_line_changed = Some(selection_start.line);
+                internal.topmost_line_changed =
+                    Some(selection_start.line.min(topmost_line_before_edit));
             }
 
             // Mouse events