From 4cf65cec4cd4c5c47b13557986b58d346b21bc92 Mon Sep 17 00:00:00 2001
From: Eli <88557639+lishaduck@users.noreply.github.com>
Date: Mon, 27 Oct 2025 13:15:51 -0500
Subject: [PATCH 1/4] feat: allow hosting hash-based apps from html files other
 than `index.html`

Fixes #14824.
---
 .changeset/upset-parents-sniff.md        |  5 +++++
 packages/kit/src/runtime/client/utils.js | 11 +++++------
 2 files changed, 10 insertions(+), 6 deletions(-)
 create mode 100644 .changeset/upset-parents-sniff.md

diff --git a/.changeset/upset-parents-sniff.md b/.changeset/upset-parents-sniff.md
new file mode 100644
index 000000000000..4e35d486d767
--- /dev/null
+++ b/.changeset/upset-parents-sniff.md
@@ -0,0 +1,5 @@
+---
+'@sveltejs/kit': minor
+---
+
+feat: allow hosting hash-based apps from non-index.html files
diff --git a/packages/kit/src/runtime/client/utils.js b/packages/kit/src/runtime/client/utils.js
index c233ef9ae52f..b373a2e71d8a 100644
--- a/packages/kit/src/runtime/client/utils.js
+++ b/packages/kit/src/runtime/client/utils.js
@@ -317,12 +317,11 @@ export function is_external_url(url, base, hash_routing) {
 	}
 
 	if (hash_routing) {
-		if (url.pathname === base + '/' || url.pathname === base + '/index.html') {
-			return false;
-		}
-
-		// be lenient if serving from filesystem
-		if (url.protocol === 'file:' && url.pathname.replace(/\/[^/]+\.html?$/, '') === base) {
+		if (
+			url.pathname === base + '/' ||
+			url.pathname === base + '/index.html' ||
+			url.pathname.replace(/\/[^/]+\.html?$/, '') === base
+		) {
 			return false;
 		}
 

From f39f15f15df3c189efc6326105e742ff70dff941 Mon Sep 17 00:00:00 2001
From: Simon H <5968653+dummdidumm@users.noreply.github.com>
Date: Thu, 20 Nov 2025 11:55:17 +0100
Subject: [PATCH 2/4] Update .changeset/upset-parents-sniff.md

---
 .changeset/upset-parents-sniff.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/.changeset/upset-parents-sniff.md b/.changeset/upset-parents-sniff.md
index 4e35d486d767..25c2cd62edb7 100644
--- a/.changeset/upset-parents-sniff.md
+++ b/.changeset/upset-parents-sniff.md
@@ -1,5 +1,5 @@
 ---
-'@sveltejs/kit': minor
+'@sveltejs/kit': patch
 ---
 
-feat: allow hosting hash-based apps from non-index.html files
+fix: allow hosting hash-based apps from non-index.html files

From dc4a21ecb39c6e4631c5289a91534060a57052ba Mon Sep 17 00:00:00 2001
From: Simon H <5968653+dummdidumm@users.noreply.github.com>
Date: Thu, 20 Nov 2025 20:17:13 +0100
Subject: [PATCH 3/4] simplify

---
 packages/kit/src/runtime/client/utils.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/packages/kit/src/runtime/client/utils.js b/packages/kit/src/runtime/client/utils.js
index b373a2e71d8a..7f88dd47b46d 100644
--- a/packages/kit/src/runtime/client/utils.js
+++ b/packages/kit/src/runtime/client/utils.js
@@ -325,7 +325,7 @@ export function is_external_url(url, base, hash_routing) {
 			return false;
 		}
 
-		return true;
+return url.pathname !== location.pathname;
 	}
 
 	return false;

From 5a67e55f9248713ce473d6abdc0c77051f6aa0d4 Mon Sep 17 00:00:00 2001
From: Simon H <5968653+dummdidumm@users.noreply.github.com>
Date: Thu, 20 Nov 2025 20:18:31 +0100
Subject: [PATCH 4/4] goddammit github ui

---
 packages/kit/src/runtime/client/utils.js | 10 +---------
 1 file changed, 1 insertion(+), 9 deletions(-)

diff --git a/packages/kit/src/runtime/client/utils.js b/packages/kit/src/runtime/client/utils.js
index 7f88dd47b46d..5c77c80d22f0 100644
--- a/packages/kit/src/runtime/client/utils.js
+++ b/packages/kit/src/runtime/client/utils.js
@@ -317,15 +317,7 @@ export function is_external_url(url, base, hash_routing) {
 	}
 
 	if (hash_routing) {
-		if (
-			url.pathname === base + '/' ||
-			url.pathname === base + '/index.html' ||
-			url.pathname.replace(/\/[^/]+\.html?$/, '') === base
-		) {
-			return false;
-		}
-
-return url.pathname !== location.pathname;
+		return url.pathname !== location.pathname;
 	}
 
 	return false;