From 623a8e65f1b015879299c37023ea4d9e25bc2f4c Mon Sep 17 00:00:00 2001
From: Ralph <janicklas@google.com>
Date: Tue, 13 Dec 2022 12:51:05 -0800
Subject: [PATCH] Adding data attr to inlined font definition

---
 packages/next/server/post-process.ts | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/packages/next/server/post-process.ts b/packages/next/server/post-process.ts
index ca1ec000fa2dad2..126cdae8c9da58c 100644
--- a/packages/next/server/post-process.ts
+++ b/packages/next/server/post-process.ts
@@ -135,9 +135,15 @@ class FontOptimizerMiddleware implements PostProcessMiddleware {
         result = result.replace('</head>', `${fallBackLinkTag}</head>`)
       } else {
         const nonceStr = nonce ? ` nonce="${nonce}"` : ''
+        let dataAttr = ''
+
+        if (fontContent.includes('ascent-override')) {
+          dataAttr = ' data-size-adjust="true"'
+        }
+
         result = result.replace(
           '</head>',
-          `<style data-href="${url}"${nonceStr}>${fontContent}</style></head>`
+          `<style data-href="${url}"${nonceStr}${dataAttr}>${fontContent}</style></head>`
         )
 
         // Remove inert font tag