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适配 TeX Live 2023：修复 beamer 3.69 下 frametitle 补丁失败的问题

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beamer 3.69 起 \beamer@@frametitle 的定义发生变化：
1. 内部新增 \ifblank 判断；
2. 用 \beamer@insertframetitlecontinuation 取代了
   \usebeamertemplate*{frametitle continuation}；
因此原有针对旧定义文本的 \patchcmd 匹配失败，报错
"Package beameroucslide Error: Patching original frame title failed"。

现按 beamer 版本分别处理：以 \beamer@insertframetitlecontinuation
是否存在作为版本判别依据，旧版仍走原有补丁路径，新版按新定义重写
并保留 frametitle 的字母大小写格式控制，从而同时兼容
TeX Live 2022 与 TeX Live 2023。已用 TeX Live 2023 用 xelatex
连续编译三遍通过（23 页），并更新编译产物 slides.pdf。
This commit is contained in:
laoyang
2026-09-20 06:44:11 +08:00
parent 999d801896
commit e4ba88242c
2 changed files with 34 additions and 16 deletions
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slides.pdf
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theme/beamerfontthemeOUCSlide.sty
+34 -16
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@@ -205,20 +205,38 @@
{\def\insertpart{{\beameroucslide@partformatspacingb{LetterSpace=15.0}\beameroucslide@partformatcaps{\beameroucslide@partformatspacinga[120]{\expandafter\hyperlink\partlink}}}}}%
{}%
{\PackageError{beameroucslide}{Patching original part failed}\@ehc}
\patchcmd{\beamer@@frametitle}
{{%
\gdef\insertframetitle{{#2\ifnum\beamer@autobreakcount>0\relax{}\space%
\usebeamertemplate*{frametitle continuation}\fi}}%
\gdef\beamer@frametitle{#2}%
\gdef\beamer@shortframetitle{#1}%
}}
{{%
\gdef\insertframetitle{{\beameroucslide@frametitleformatcaps{#2}\ifnum%
\beamer@autobreakcount>0\relax{}\space%
\usebeamertemplate*{frametitle continuation}\fi}}%
\gdef\beamer@frametitle{#2}%
\gdef\beamer@shortframetitle{#1}%
}}
{}
{\PackageError{beameroucslide}{Patching original frame title failed}\@ehc}
% beamer 3.69（TeX Live 2023）起 \beamer@@frametitle 的定义发生了变化：
% 1. 内部增加了 \ifblank 判断；
% 2. 用 \beamer@insertframetitlecontinuation 取代了 \usebeamertemplate*{frametitle continuation}。
% 因此这里按 beamer 版本分别处理，保证在 TeX Live 2022 与 2023 下都能编译通过。
\@ifundefined{beamer@insertframetitlecontinuation}
{% 旧版 beamer（TeX Live 2022 及以前）：沿用原有的补丁方式
\patchcmd{\beamer@@frametitle}
{{%
\gdef\insertframetitle{{#2\ifnum\beamer@autobreakcount>0\relax{}\space%
\usebeamertemplate*{frametitle continuation}\fi}}%
\gdef\beamer@frametitle{#2}%
\gdef\beamer@shortframetitle{#1}%
}}
{{%
\gdef\insertframetitle{{\beameroucslide@frametitleformatcaps{#2}\ifnum%
\beamer@autobreakcount>0\relax{}\space%
\usebeamertemplate*{frametitle continuation}\fi}}%
\gdef\beamer@frametitle{#2}%
\gdef\beamer@shortframetitle{#1}%
}}
{}
{\PackageError{beameroucslide}{Patching original frame title failed}\@ehc}%
}
{% 新版 beamer（TeX Live 2023 及以后）：按新定义重写，并加入标题格式控制
\long\def\beamer@@frametitle[#1]#2{%
\ifblank{#2}{}{%
\gdef\insertframetitle{{\beameroucslide@frametitleformatcaps{#2}%
\ifnum\beamer@autobreakcount>0\relax{}\space%
\beamer@insertframetitlecontinuation\fi}}%
\gdef\beamer@frametitle{#2}%
\gdef\beamer@shortframetitle{#1}%
}%
}%
}
\makeatother