Create an appendix of all code in a html file

[jhelvy]

Description

RMarkdown has a handy way of using the ref.label chunk option to grab the code from all of the code chunks in a file and display them all together (see here). I've tried implementing this in Quarto but I can't get it to work. Am I missing something?

I can use ref.label to copy the code from a single chunk, but I haven't gotten this to display the code from all chunks.

[cderv]

This knitr recipe should work in a quarto document. Are you trying to use this in a specific context though ?
Can you share an example ?

Here is a working quarto document

---
title: "Reproducible Quarto Document"
format: html
execute: 
  echo: false
---

# Content 1

```{r}
plot(mtcars)
```

# Content 2

```{r}
head(mtcars)
```


# Appendix: All code for this report

```{r ref.label=knitr::all_labels()}
#| echo: true
#| eval: false
```

For last chunk, I am missing Yaml option and usual knitr syntax, because you need knitr::all_labels() to be evaluated
Full YAML syntax would look like

```{r}
#| echo: true
#| eval: false
#| ref-label: !expr knitr::all_labels()
```

but

• You can get R expression in YAML using !expr (specific for knitr chunks)
• ref-label as yaml chunk option works with latest dev version of knitr (otherwise you need to use ref.label)

A note on this: this works for any document that it rendered on the same knitting process. This means that you can do that as the last chunk of a book project document and expect all codes from the book to be included. You need to code around it in that case as each .qmd is knitted in its own independant process.

Hope it helps

[jhelvy]

Yup. that works!

I was doing this:

```{r}
#| echo: true
#| eval: false
#| ref.label: knitr::all_labels()
```

Didn't realize that it wouldn't be evaluated with that syntax. I prefer the first syntax:

```{r ref.label=knitr::all_labels()}
#| echo: true
#| eval: false
```

Works like a charm!

[cl-roberts]

For anyone who ends up here, I made a lua filter for this use case. See the code-appendix repository for the filter or the show and tell post that I made.