From 2e2f5ba8c7348f1f4373e3e544064515ddae3dc8 Mon Sep 17 00:00:00 2001
From: rofe <github@rofe.com>
Date: Wed, 26 Feb 2025 11:31:04 +0100
Subject: [PATCH] fix(metadata): make html lang case-insensitive

---
 src/steps/render.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/steps/render.js b/src/steps/render.js
index 7c844f8e..2532f589 100644
--- a/src/steps/render.js
+++ b/src/steps/render.js
@@ -76,7 +76,7 @@ export default async function render(state, req, res) {
       continue;
     }
     if (name.toLowerCase() === 'html-lang') {
-      if (/^[a-z]{2}([-_]{1}[A-Z]{2})?$/.test(value)) {
+      if (/^[a-z]{2}([-_]{1}[a-z]{2})?$/i.test(value)) {
         htmlLang = value;
       }
       // eslint-disable-next-line no-continue