From c24f30f5ecb4d5f7c15f0c79f4c8d54945635417 Mon Sep 17 00:00:00 2001
From: Adrian Vollmer <computerfluesterer@protonmail.com>
Date: Sun, 16 Oct 2022 18:30:09 +0200
Subject: [PATCH] Fix error with about:srcdoc links; add extra check

---
 zundler/assets/inject_post.js | 3 ++-
 zundler/assets/main.js        | 6 ++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/zundler/assets/inject_post.js b/zundler/assets/inject_post.js
index cb7cc47..37296e1 100644
--- a/zundler/assets/inject_post.js
+++ b/zundler/assets/inject_post.js
@@ -91,7 +91,7 @@ var fix_link = function(a) {
         a.addEventListener('click', virtual_click);
     } else if (a.getAttribute('href').startsWith('#')) {
         a.setAttribute('href', "about:srcdoc" + a.getAttribute('href'))
-    } else {
+    } else if (!a.getAttribute('href').startsWith('about:srcdoc')) {
         // External links should open in a new tab. Browsers block links to
         // sites of different origin within an iframe for security reasons.
         a.setAttribute('target', "_blank");
@@ -144,6 +144,7 @@ var is_virtual = function(url) {
         _url.startsWith('https://') ||
         _url.startsWith('http://') ||
         _url.startsWith('data:') ||
+        _url.startsWith('about:srcdoc') ||
         _url.startsWith('blob:')
     ));
 };
diff --git a/zundler/assets/main.js b/zundler/assets/main.js
index 6f8d205..f7979d6 100644
--- a/zundler/assets/main.js
+++ b/zundler/assets/main.js
@@ -38,6 +38,12 @@ var load_virtual_page = (function (path, get_params, anchor) {
     const file = window.global_context.file_tree[path];
     var iframe = createIframe();
 
+    if (!file) {
+        console.error("File not found:", path, get_params, anchor);
+        return false;
+    }
+
+
     const data = file.data;
     window.global_context.get_parameters = get_params;
     if (file.mime_type == 'text/html') {