较长的部分的短标题在Beamer演示文稿中标题R Markdown（Pandoc）

Question

我正在研究由几个部分组成的beamer_presentation。该部分标题太长了，无法适应剑桥标题。我已经尝试了来自相关乳胶来源的几个选项来使用本节的一些简短标题（例如“第1章”，而不是“第1章，具有非常非常every的长标题” \ atbeginSection。 {\ title [简短标题] {long title}}），但无法弄清楚如何在R Markdown Yaml的标头中管理此问题。我通过＃在Markdown中设置截面标题

---
title: Title for the whole presentation
subtitle: 'Presentation'
author: 
- Author

institute: "Institution"
date: " `r format(Sys.Date(), '%B %d, %Y')`"
output:
  beamer_presentation:
    latex_engine: xelatex
    toc: true
    highlight: tango
    theme: "CambridgeUS"
    colortheme: "lily"
    fonttheme: "serif"
    slide_level: 3
    keep_tex: true
header-includes:
  - \setbeamertemplate{navigation symbols}{}
  - \AtBeginDocument{\title[Presentation]{Title for whole presentation}}
  - \renewcommand{\raggedright}{\leftskip=0pt \rightskip=0pt plus 0cm}
  - \def\sectionname{Chapter}
  - \AtBeginSubsection{}

---

```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = FALSE, warning = FALSE, message = FALSE)
```


# Chapter 1 with a very-very-very-very-very long title
## Intro

### The first page

Answer 1

在Beamer中，这是微不足道的，您可以使用\ section [简短版本] {long version}。但是Markdown使这项简单的工作非常困难。

但是，您可以这样欺骗这样的标记：（

---
title: Title for the whole presentation
subtitle: 'Presentation'
author: 
- Author

institute: "Institution"
date: " `r format(Sys.Date(), '%B %d, %Y')`"
output:
  beamer_presentation:
    latex_engine: xelatex
    toc: false
    highlight: tango
    theme: "CambridgeUS"
    colortheme: "lily"
    fonttheme: "serif"
    slide_level: 3
    keep_tex: true
header-includes:
  - \setbeamertemplate{navigation symbols}{}
  - \AtBeginDocument{\title[Presentation]{Title for whole presentation}}
  - \renewcommand{\raggedright}{\leftskip=0pt \rightskip=0pt plus 0cm}
  - \def\sectionname{Chapter}
  - \AtBeginSubsection{}

---

```{r setup, include=FALSE}
knitr::opts_chunk$set(echo = FALSE, warning = FALSE, message = FALSE)
```

```{=latex}
\tableofcontents[hideallsubsections]
\end{frame}
\section[short version for headline]{Chapter 1 with a very-very-very-very-very long title}
\subsection[short subsection for headline]{Intro}
\begin{frame}
\frametitle{The first page}
```

some text

请小心放置此命令的位置，否则您可能最终会出现空的额外帧 - 这就是为什么我必须关闭自动TOC并手动插入它...）