From 668809f4c549c7bb360896c0b8c3894da8a898e9 Mon Sep 17 00:00:00 2001
From: Felix Nie <hongtuo.nie@u.nus.edu>
Date: Mon, 17 Mar 2025 12:46:32 +0800
Subject: [PATCH] Dealing with empty and undefined title

---
 quartz/util/theme.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/quartz/util/theme.ts b/quartz/util/theme.ts
index 30342fef7..1857f5f28 100644
--- a/quartz/util/theme.ts
+++ b/quartz/util/theme.ts
@@ -84,7 +84,7 @@ function formatFontSpecification(type: "title" | "header" | "body" | "code", spe
 
 export function googleFontHref(theme: Theme, text: string): string[] {
   const { header, body, code } = theme.typography
-  const title = (theme.typography.title || undefined) ?? header
+  const title = theme.typography.title || header
 
   const titleFont = formatFontSpecification("title", title)
   const headerFont = formatFontSpecification("header", header)
@@ -147,7 +147,7 @@ ${stylesheet.join("\n\n")}
   --highlight: ${theme.colors.lightMode.highlight};
   --textHighlight: ${theme.colors.lightMode.textHighlight};
 
-  --titleFont: "${getFontSpecificationName(theme.typography.title)}", ${DEFAULT_SANS_SERIF};
+  --titleFont: "${getFontSpecificationName(theme.typography.title || theme.typography.header)}", ${DEFAULT_SANS_SERIF};
   --headerFont: "${getFontSpecificationName(theme.typography.header)}", ${DEFAULT_SANS_SERIF};
   --bodyFont: "${getFontSpecificationName(theme.typography.body)}", ${DEFAULT_SANS_SERIF};
   --codeFont: "${getFontSpecificationName(theme.typography.code)}", ${DEFAULT_MONO};