From 531d897707e437d36f6d8bd4053ebcbcfefd6be9 Mon Sep 17 00:00:00 2001
From: Hiroshi SHIBATA <hsbt@ruby-lang.org>
Date: Tue, 7 Apr 2026 13:45:00 +0900
Subject: [PATCH] Use relative redirect for non-production environments

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---
 index.html | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/index.html b/index.html
index c0e6040bcf..80ec6d6f51 100644
--- a/index.html
+++ b/index.html
@@ -24,14 +24,11 @@
       var language = languages[code];
       if (!language) { language = "en"; }
 
-      // If we're running on localhost/loopback for local development,
-      // keep redirects relative so the developer can test locally.
       var host = window.location.hostname;
-      var isLocal = (host === 'localhost' || host === '127.0.0.1' || host === '::1');
-      if (isLocal) {
-        document.location = "/" + language + "/";
-      } else {
+      if (host === 'www.ruby-lang.org') {
         document.location = "https://www.ruby-lang.org/" + language + "/";
+      } else {
+        document.location = "/" + language + "/";
       }
     </script>
     <noscript>