From a4091fbcf407c652377a22aa9f873b069f891415 Mon Sep 17 00:00:00 2001
From: "Y.D.X." <73375426+YDX-2147483647@users.noreply.github.com>
Date: Thu, 4 Jul 2024 00:45:32 +0800
Subject: [PATCH] =?UTF-8?q?feat:=20=E6=94=B9=E5=B0=8F=E6=95=B0=E5=AD=A6?=
 =?UTF-8?q?=E8=A1=8C=E8=B7=9D=E8=87=B3=E8=A5=BF=E6=96=87=E6=B0=B4=E5=B9=B3?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

如需恢复数学行距至原先的中文水平，可在导言区将倍数从1调大至1.53：

```latex
\SetMathEnvironmentSinglespace{1.53}
```

Resolves #500
---
 bithesis-doc.tex | 8 +++++++-
 bithesis.dtx     | 3 +++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/bithesis-doc.tex b/bithesis-doc.tex
index f6187e41..c9a3920c 100644
--- a/bithesis-doc.tex
+++ b/bithesis-doc.tex
@@ -1847,8 +1847,14 @@ \subsection{如何修改数学公式的字体？}
 
 \textit{请事先安装 XITS 字体。}
 
+此外，\TeX{} Gyre Pagella Math 等字体字面较大，略微增加数学行距可能更美观：
+\begin{latex}
+  \SetMathEnvironmentSinglespace{1.05}
+\end{latex}
+
 \textit{更多字体与使用方法请参考 
-\href{https://ctan.org/pkg/unicode-math?lang=zh}{unicode-math 手册}。}
+\href{https://ctan.org/pkg/unicode-math?lang=zh}{unicode-math 手册}和
+\href{https://ctan.org/pkg/zhlineskip}{zhlineskip 手册}。}
 
 \subsection{如何采用与 Word 相同的中文字体？} \label{sec:word-fonts}
 
diff --git a/bithesis.dtx b/bithesis.dtx
index 608b8516..a9ba412b 100644
--- a/bithesis.dtx
+++ b/bithesis.dtx
@@ -961,6 +961,9 @@
 \RequirePackage{geometry}
 \RequirePackage[table,xcdraw]{xcolor}
 \RequirePackage{xeCJK}
+% 恢复数学行距（restoremathleading），同时避免改变正文行距。
+% （ctex 默认 linespread 1.3 × LaTeX 默认倍数 1.2 = 1.56）
+\RequirePackage[bodytextleadingratio=1.56]{zhlineskip}
 \RequirePackage{titletoc}
 \RequirePackage{graphicx}
 \RequirePackage{fancyhdr}