From e44c8c234630c9cbf18e8f1c5c516bfc97b74c1f Mon Sep 17 00:00:00 2001
From: Harsh <harshmastic@gmail.com>
Date: Sat, 11 Oct 2025 22:38:14 +0530
Subject: [PATCH 1/2] Prevent breaking external links

---
 src/middleware.ts | 36 ++++++++++++++++++++++--------------
 1 file changed, 22 insertions(+), 14 deletions(-)

diff --git a/src/middleware.ts b/src/middleware.ts
index de792d71e2..c959e3a064 100644
--- a/src/middleware.ts
+++ b/src/middleware.ts
@@ -39,13 +39,11 @@ export async function onRequest(
     currentLocale = pathSegments[0];
   }
 
-  let modifiedHtml = html;
-
-  // If we have a currentLocale, modify the HTML to ensure all links
-  // have the correct locale prefix
-  if (currentLocale) {
-    modifiedHtml = ensureCorrectLocalePrefixesInHtmlLinks(html, currentLocale);
-  }
+  // Process HTML links to normalize external URLs and add locale prefixes when applicable
+  const modifiedHtml = ensureCorrectLocalePrefixesInHtmlLinks(
+    html,
+    currentLocale,
+  );
 
   // Return a new Response with the modified HTML
   return new Response(modifiedHtml, {
@@ -56,7 +54,7 @@ export async function onRequest(
 
 export const ensureCorrectLocalePrefixesInHtmlLinks = (
   html: string,
-  currentLocale: string,
+  currentLocale?: string,
 ) => {
   const $ = load(html);
 
@@ -65,13 +63,23 @@ export const ensureCorrectLocalePrefixesInHtmlLinks = (
   $("a").each(function () {
     let href = $(this).attr("href");
     // Skip if href is undefined, an external link, or written with a dot slash
-    if (
-      !href ||
-      href.startsWith("http") ||
-      href.startsWith("./") ||
-      href.startsWith("#")
-    )
+    if (!href || href.startsWith("./") || href.startsWith("#")) return;
+
+    // Remove trailing slashes from external/absolute URLs (like Wikipedia)
+    // to prevent breaking external links
+    if (href.startsWith("http")) {
+      try {
+        const urlObj = new URL(href);
+        // Only remove trailing slash if the path is not just "/"
+        if (href.endsWith("/") && urlObj.pathname !== "/") {
+          href = href.slice(0, -1);
+          $(this).attr("href", href);
+        }
+      } catch (e) {
+        // If URL parsing fails, leave the href unchanged
+      }
       return;
+    }
 
     const startsWithLocale = nonDefaultSupportedLocales.some(
       (locale) => href && href.startsWith(`/${locale}/`),

From e9c47c4fb46d45cfab38543d0350c973b1f1fd68 Mon Sep 17 00:00:00 2001
From: harsh kumar <135993950+hxrshxz@users.noreply.github.com>
Date: Sat, 11 Oct 2025 23:05:34 +0530
Subject: [PATCH 2/2] Update src/middleware.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
---
 src/middleware.ts | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/middleware.ts b/src/middleware.ts
index c959e3a064..2036a1e165 100644
--- a/src/middleware.ts
+++ b/src/middleware.ts
@@ -76,7 +76,8 @@ export const ensureCorrectLocalePrefixesInHtmlLinks = (
           $(this).attr("href", href);
         }
       } catch (e) {
-        // If URL parsing fails, leave the href unchanged
+        // If URL parsing fails, log the error and leave the href unchanged
+        console.error(`Failed to parse URL in <a> tag href: "${href}". Error:`, e);
       }
       return;
     }