FATAL error in confluence publish with multi columns figures

[fkgruber]

Bug description

If you try to publish a quarto document that has mutlticolumns (::: {layout-ncol=2} notation) it crashes with fatal error.

Even if multicolumn are not supported in confluence it should not just crash with fatal error. Hopefully it would do something sensible.

Steps to reproduce

---
format: confluence-html
title: Test
author: Test
---
# Test 2 columns
```{r}
library(tidyverse)

::: {layout-ncol=2}

#| echo: false
#| eval: true
#| cache: true
#| fig.asp: 1
#| messages: false
#| warnings: false
#| fig.width: 10

hist(rnorm(1000))

#| echo: false
#| eval: true
#| cache: true
#| fig.asp: 1
#| messages: false
#| warnings: false
#| fig.width: 10

hist(rnorm(100))

Test of 2

:::

quarto publish confluence bug_confluence.qmd 

### Expected behavior

to publish in confluence

### Actual behavior

crashes with

> 
> >FATAL (/Applications/quarto/share/filters/main.lua:20159) An error occurred:
> This is an internal error. Please file a bug report at https://github.com/quarto-dev/quarto-cli/
> Error running filter /Applications/quarto/share/filters/main.lua:
> /Applications/quarto/share/filters/main.lua:2246: attempt to call a nil value (global 'crash_with_stack_trace')
> stack traceback:
>   /Applications/quarto/share/filters/main.lua:1826: in function 'fail'
>   /Applications/quarto/share/filters/main.lua:1831: in function 'internal_error'
>   /Applications/quarto/share/filters/main.lua:20159: in function 'decorate_caption_with_crossref'
>   /Applications/quarto/share/filters/main.lua:21385: in field 'render'
>   /Applications/quarto/share/filters/main.lua:841: in local 'filter_fn'
>   /Applications/quarto/share/filters/main.lua:302: in function </Applications/quarto/share/filters/main.lua:292>
>   (...tail calls...)
>   [C]: in ?
>   [C]: in method 'walk'
>   /Applications/quarto/share/filters/main.lua:224: in function </Applications/quarto/share/filters/main.lua:214>
>   (...tail calls...)
>   /Applications/quarto/share/filters/main.lua:942: in local 'callback'
>   /Applications/quarto/share/filters/main.lua:960: in upvalue 'run_emulater_chain'
>   /Applications/quarto/share/filters/main.lua:996: in function </Applications/quarto/share/filters/main.lua:993>
> stack traceback:
>   /Applications/quarto/share/filters/main.lua:224: in function </Applications/quarto/share/filters/main.lua:214>
>   (...tail calls...)
>   /Applications/quarto/share/filters/main.lua:942: in local 'callback'
>   /Applications/quarto/share/filters/main.lua:960: in upvalue 'run_emulated_filter_chain'
>   /Applications/quarto/share/filters/main.lua:996: in function </Applications/quarto/share/filters/main.lua:993>

### Your environment

OS: Mac OS Sonoma 14.4

### Quarto check output

Quarto 1.4.553
[✓] Checking versions of quarto binary dependencies...
      Pandoc version 3.1.11: OK
      Dart Sass version 1.69.5: OK
      Deno version 1.37.2: OK
[✓] Checking versions of quarto dependencies......OK
[✓] Checking Quarto installation......OK
      Version: 1.4.553
      Path: /Applications/quarto/bin

[✓] Checking tools....................OK
      TinyTeX: (not installed)
      Chromium: (not installed)

[✓] Checking LaTeX....................OK
      Using: Installation From Path
      Path: /Library/TeX/texbin
      Version: 2023

[✓] Checking basic markdown render....OK

[✓] Checking Python 3 installation....OK
      Version: 3.11.8 (Conda)
      Path: /Users/fgruber/miniconda3/bin/python
      Jupyter: 5.5.0
      Kernels: python3

[✓] Checking Jupyter engine render....OK

[✓] Checking R installation...........OK
      Version: 4.3.2
      Path: /Library/Frameworks/R.framework/Resources
      LibPaths:
        - /Library/Frameworks/R.framework/Versions/4.3-arm64/Resources/library
      knitr: 1.45
      rmarkdown: 2.26.1

[✓] Checking Knitr engine render......OK

[mcanouil]

Are tidyverse and all the options you've set necessary? By the way, Quarto uses dash delimited code cell options: fig-asp not fig.asp (even if it works).

Is the following enough to produce the issue you are describing?

---
format: confluence-html
title: Test
author: Test
---

## Test 2 columns

::: {layout-ncol=2}

Text 1

Text 2

Text 3

:::

[fkgruber]

yes this minimal example works fine to reproduce error.

thanks

[fkgruber]

by the way I got the same error on a linux machine. So it is not mac specific either.

[cscheid]

Thanks for the report. From the error trace, this looks like another instance of the stray nils we're getting from Pandoc given their recent Lua API fix in https://github.com/jgm/pandoc/issues/9613.

[cscheid]

Ok, I can repro this. Unfortunately, the fix is to produce an error message that says "Confluence format can't render layouts without floats"; This is because multi-column layouts are simply not supported by Confluence.

[cscheid]

The error will now be

ERROR (/Users/cscheid/repos/github/quarto-dev/quarto-cli/src/resources/filters/./layout/confluence.lua:61) Confluence format can't render layouts without floats. Will skip this layout element.