From 6cfd9fec8742eab68f21d1b5c0166fb690d6e655 Mon Sep 17 00:00:00 2001
From: Bao Nguyen <waycaosi1994@gmail.com>
Date: Mon, 21 Sep 2026 17:59:34 +0700
Subject: [PATCH] fix: unquote font family names in webfont provider URLs

generateFontParams replaced a quoted family name with capture group 1, the
quote character itself, so `fonts: { sans: '"Helvetica Neue", Roboto' }`
emitted `family="` and Google Fonts answered 400. Use group 2, the name.
---
 packages/slidev/node/utils.ts |  2 +-
 test/utils.test.ts            | 10 ++++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/packages/slidev/node/utils.ts b/packages/slidev/node/utils.ts
index 792f21b33f..7570ae7ec6 100644
--- a/packages/slidev/node/utils.ts
+++ b/packages/slidev/node/utils.ts
@@ -75,7 +75,7 @@ export function generateFontParams(options: ResolvedFontOptions) {
     .sort()
     .join(';')
   const fontParams = options.webfonts
-    .map(i => `family=${i.replace(RE_QUOTED_STRING, '$1').replace(RE_WHITESPACE, '+')}:${options.italic ? 'ital,' : ''}wght@${weights}`)
+    .map(i => `family=${i.replace(RE_QUOTED_STRING, '$2').replace(RE_WHITESPACE, '+')}:${options.italic ? 'ital,' : ''}wght@${weights}`)
     .join('&')
   return fontParams
 }
diff --git a/test/utils.test.ts b/test/utils.test.ts
index 4e6d202db6..bdd373fb5f 100644
--- a/test/utils.test.ts
+++ b/test/utils.test.ts
@@ -65,6 +65,16 @@ describe('utils', () => {
     ).toMatchSnapshot()
   })
 
+  it('google-fonts with quoted family names', () => {
+    expect(
+      generateGoogleFontsUrl({
+        webfonts: ['"Helvetica Neue"', '\'PT Serif\''],
+        weights: ['400'],
+        provider: 'google',
+      } as ResolvedFontOptions),
+    ).toBe('https://fonts.googleapis.com/css2?family=Helvetica+Neue:wght@400&family=PT+Serif:wght@400&display=swap')
+  })
+
   it('coollabs-fonts', () => {
     expect(
       generateCoollabsFontsUrl({