Include YAML, not frontmatter, in output from knitr

Question

I would like to use knitr to generate a Markdown document. In that Markdown document, I'd like to include some YAML that is generated by a separate program. However, inserting that text as a plain YAML is conflated with the standard frontmatter part of a knitr document. I'm unsure how to escape the YAML that is intended to be in the Markdown output.

That is, the knitr document would follow something like:

---
output: github_document
---
---
foo: bar
---

Lorem Ipsum

Would generate a corresponding Markdown file:

---
foo: bar
---

Lorem Ipsum

Within the knitr document, have tried a few ways to escape the ---, including:

\--- which outputs as \-– (en-dash em-dash)
\-\-\- outputs as \---
-\-- outputs as \---

Answer 1

---
title: "show asis yaml header"
author: "Daniel"
date: "6/28/2020"
output: html_document
---

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

````markdown
---
title: "show asis yaml header"
author: "Daniel"
date: "6/28/2020"
output: html_document
---
````

You want to have a markdown chunk to show your yaml header. it renders to HTML like this