From 3414408782fd18a471aa36d6f1687b738002b524 Mon Sep 17 00:00:00 2001
From: Rich Harris <git@rich-harris.dev>
Date: Tue, 21 Mar 2023 17:52:52 -0400
Subject: [PATCH] escape strings for regex - closes #284

---
 src/routes/tutorial/[slug]/Menu.svelte | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/routes/tutorial/[slug]/Menu.svelte b/src/routes/tutorial/[slug]/Menu.svelte
index 3c682c727..aec676cc3 100644
--- a/src/routes/tutorial/[slug]/Menu.svelte
+++ b/src/routes/tutorial/[slug]/Menu.svelte
@@ -25,7 +25,8 @@
 	$: expanded_part = current.part.slug;
 	$: expanded_chapter = current.chapter.slug;
 
-	$: regex = new RegExp(`\\b${search.length >= 2 ? search : ''}`, 'i');
+	$: escaped = search.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, '\\$&');
+	$: regex = new RegExp(`\\b${search.length >= 2 ? escaped : ''}`, 'i');
 
 	$: filtered = index
 		.map((part) => {
@@ -147,6 +148,8 @@
 							</ul>
 						{/if}
 					</li>
+				{:else}
+					<li>No search results!</li>
 				{/each}
 			</ul>
 		</div>