Output raw markdown in Quarto document from R

[stefanocoretta]

Description

I am trying to output raw markdown from an R function in a Quarto document, but it seems that some escaping is applied.

---
title: "Reproducible Quarto Document"
format: html
engine: knitr
---

```{r results='asis'}
cat(paste0("|- test\n|test"))
```

When quarto render test.qmd -t markdown this is the output:

---
title: Reproducible Quarto Document
toc-title: Table of contents
---

``` {.r .cell-code}
cat(paste0("|- test\n|test"))
```

\|- test \| test

While the expected output should be:

---
title: Reproducible Quarto Document
toc-title: Table of contents
---

``` {.r .cell-code}
cat(paste0("|- test\n|test"))
```

|- test
| test

Is there a way of getting text to be output as is from a Quarto markdown? Might be related to #6874?

[mcanouil]

In Quarto, you should have nothing inside the brackets except the language.

I'm not sure the issue is Quarto.

---
title: "Reproducible Quarto Document"
format: html
engine: knitr
keep-md: true
---

```{r}
#| output: asis
cat(paste0("|- test\n|test"))
```

---

```{r}
#| results: asis
cat(paste0("|- test\n|test"))
```

From this code, regardless of the chosen format, Quarto produces the following intermediate Markdown document:

---
title: "Reproducible Quarto Document"
format: gfm
engine: knitr
keep-md: true
---


```{.r .cell-code}
cat(paste0("|- test\n|test"))
```

|- test
|test

---


```{.r .cell-code}
cat(paste0("|- test\n|test"))
```

|- test
|test

Then if you use Pandoc on this intermediate document:

quarto pandoc --from markdown --to markdown index.html.md

You get exactly what you see.

Note that the behaviour is normal. Here the | are escaped because pipe_tables is activated.

quarto pandoc --from markdown --to markdown-pipe_tables index.html.md

I don't know what you are trying to emit exactly but the issue might be there.

[cderv]

When you want to write raw markdown that are not supposed to be parsed, but output asis in the output document, one solution is to mark it as a raw block like you would do with HTML or LaTeX

---
title: "Reproducible Quarto Document"
format: markdown
engine: knitr
---

```{r}
#| output: asis
knitr::raw_block(paste0("|- test\n|test"), "markdown")
```

and here this would be necessary as | can be a special markdown character as explained, so it will be parsed escaped when written