How to wrap output code when printing an error with a large content in html and LateX?

[luifrancgom]

Description

I am writing a book and I want to know if it is possible to wrap output when printing an error with a large content in both html and LateX formats.

Steps to reproduce

---
title: "Untitled"
format: 
  html:
    embed-resources: true
  pdf: default
editor: visual
---

# Section 1

```{r}
#| error: true
x <- c("a", "b")
sample(x = x, size = 3)
```

Actual behavior

html

pdf

Desire behavior

What I try but what I want to improve

This can be a solution but what I want is something more automatic, if possible. Any help will be appreciated.

---
title: "Untitled"
format: 
  html:
    embed-resources: true
  pdf: default
editor: visual
---

# Section 1

```{r}
#| error: true
x <- c("a", "b")
sample(x = x, size = 3)
```

```{r}
#| eval: false
x <- c("a", "b")
sample(x = x, size = 3)
```

```{r}
#| echo: false
cat("Error in sample.int(length(x), size, replace, prob) : cannot take a sample \nlarger than the population when 'replace = FALSE'")
```

Environment

• OS: Windows 11 Pro
• R: 4.3.3
• IDE: RStudio 2023.12.1+402
• Quarto: 1.4.552

[mcanouil]

A bit of vocabulary, that's not "responsive" that you are looking for but code output wrapping.

Here are some of the previous discussions on this exact topic:

• Wrap Execution Output #6017
• How can I make code wrap when generating PDF from Jupyter Notebooks? #7612
• How do I wrap-anywhere code blocks? #6083
• Is it possible to wrap long lines of code in a PDF? #5728
• How to handle code overflow (going off the page) in PDF output? #3693
• Wordwrap in Code Blocks [PDF-Export] #3632
• Code folding in PDF output? #4121

[luifrancgom]

Thank you for your help and pointing me out the correct concept in relation to output wrapping. I edit the post taking into account what you mention. However I have some questions. If I try the following solution:

---
title: "Untitled"
format: 
  html:
    embed-resources: true
    code-overflow: wrap
  pdf:
    keep-tex: true
    include-in-header: 
       text: |
         \usepackage{fvextra}
         \DefineVerbatimEnvironment{Highlighting}{Verbatim}{breaklines,commandchars=\\\{\}}
    include-before-body:
      text: |
        \RecustomVerbatimEnvironment{verbatim}{Verbatim}{
          showspaces = false,
          showtabs = false,
          breaksymbolleft={},
          breaklines
          % Note: setting commandchars=\\\{\} here will cause an error 
        }
editor: visual
---

# Section 1

```{r}
#| echo: false
grid::unit(lattice::trellis.par.get()$axis.components$bottom$tck, lattice::lattice.options()$layout.widths$right.padding$units)
```

```{r}
library(tidyverse)
```


```{r}
#| error: true

x <- c("a", "b")
sample(x = x, size = 3)
```

1. For pdf format I get the following result:

It is possible to get rid of [1] 1char?

2. For html format I get the following result:

As you can check code-overflow: wrap doesn't work. However I tried in the case of a book and it works. Why in a quarto document doesn't work but in a quarto book it works?

[cderv]

It is possible to get rid of [1] 1char?

You have this as a results of your first cell with only echo: false. If you don't want the output, use include: false
See https://quarto.org/docs/computations/execution-options.html

code-overflow: wrap

I do think this option only applies to source code part, not the output part of it
Doc says: https://quarto.org/docs/output-formats/html-code.html#code-overflow

In some cases the width of source code will overflow the available horizontal display space. By default, this will result in a horizontal scroll bar for the code block. However if you prefer not to have scrollbars you can have the longer lines wrap instead.

So for HTML you could handle using a CSS rules where you need to. For example

div.cell-output pre code {
    white-space: pre-wrap;
}

Usually, any customization needs to be done in the targeted format when you are not happy with the default from Quarto

Hope it helps

[luifrancgom]

Thank you Mickaël Canouil and Christophe Dervieux for your help. As always you really help the Quarto final user.