如何在Pandoc Beamer幻灯片的降价中指定YAML元数据？

我正在尝试使用YAML元数据块在Pandoc的标记文档中指定一些文档属性，我将转换为LaTeX Beamer。我在此处阅读了说明：并尝试了以下文档：

---
title: Some title
---

# This is a test slideshow.

## This should turn into a slide...

...with some content.

---

我使用

pandoc-t beamer file.md-V theme:SomeTheme-o file.PDF

将文件转换为PDF。除了文档开头的YAML块在第一张幻灯片中被转换成一个包含上下规则和文本“title:Some title”的表之外，它似乎可以正确地处理主题等。我做错了什么？

不确定为什么您的元数据不能像我的元数据那样正常工作

尝试（在标题后加空格）：

---
title: Some title

---

# This is a test slideshow.

## This should turn into a slide...

...with some content.

---
title: Some title

...

# This is a test slideshow.

## This should turn into a slide...

...with some content.

---
title: "Some title"

---

# This is a test slideshow.

## This should turn into a slide...

...with some content.

或（带句点）：

---
title: Some title

---

# This is a test slideshow.

## This should turn into a slide...

...with some content.

---
title: Some title

...

# This is a test slideshow.

## This should turn into a slide...

...with some content.

---
title: "Some title"

---

# This is a test slideshow.

## This should turn into a slide...

...with some content.

或（带引号）：

---
title: Some title

---

# This is a test slideshow.

## This should turn into a slide...

...with some content.

---
title: Some title

...

# This is a test slideshow.

## This should turn into a slide...

...with some content.

---
title: "Some title"

---

# This is a test slideshow.

## This should turn into a slide...

...with some content.

---

这些都有效吗？

的确，它们都有效。奇怪的是，我原来的例子现在也能用了。我之前曾尝试过使用早期版本的Pandoc（我不记得是哪个）。它现在适用于1.12.2.1版。