From 7e8ea84bda00350ec44ae7a324a0f1b7a875ac40 Mon Sep 17 00:00:00 2001
From: Rich Harris <rich.harris@vercel.com>
Date: Tue, 17 Dec 2024 17:24:41 -0500
Subject: [PATCH] fix cursor position on state changes - fixes #935

---
 packages/editor/src/lib/Workspace.svelte.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/packages/editor/src/lib/Workspace.svelte.ts b/packages/editor/src/lib/Workspace.svelte.ts
index d73f4f65ea..9bfa1e908a 100644
--- a/packages/editor/src/lib/Workspace.svelte.ts
+++ b/packages/editor/src/lib/Workspace.svelte.ts
@@ -556,7 +556,10 @@ export class Workspace {
 		const existing = state.doc.toString();
 
 		if (file.contents !== existing) {
-			const current_cursor_position = this.#view?.state.selection.ranges[0].from!;
+			const current_cursor_position = Math.min(
+				this.#view?.state.selection.ranges[0].from!,
+				file.contents.length
+			);
 
 			const transaction = state.update({
 				changes: {