From ef72a2ce9d147fa61e2e917174271948c14b103e Mon Sep 17 00:00:00 2001
From: Derrick Hammer <derrick@derrickhammer.com>
Date: Wed, 18 Oct 2023 08:43:58 -0400
Subject: [PATCH] fix: try better handling of protocolless urls.

---
 src/backend/filters/urlRewrite.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/backend/filters/urlRewrite.ts b/src/backend/filters/urlRewrite.ts
index ae0c96d..130f27a 100644
--- a/src/backend/filters/urlRewrite.ts
+++ b/src/backend/filters/urlRewrite.ts
@@ -29,7 +29,9 @@ export default class URLRewriteFilter implements ContentFilter {
           let attrName = ["a", "link"].includes(tag) ? "href" : "src";
           let urlValue = $(element).attr(attrName);
           if (urlValue) {
-            const isExternal = urlValue.startsWith("http");
+            const isExternal =
+              urlValue.startsWith("http") ||
+              (urlValue.startsWith("//") && isICANN(urlValue));
             if (!isExternal || !isICANN(urlValue)) {
               if (!isExternal) {
                 //@ts-ignore