are (or how ?) metadata propagated from project (or _metadata.yml) to .qmd

[xtimbeau]

Description

Consider a project with a pair of metavalue, project wise:

project: 
  type: website
  
format: html

mymeta:
  key1: projectwise_value
  key2: projectwise_value_2

filters:
  - filtermeta.lua

Now, add, in the project folder a qmd overruling one of the keys:

---
title: a qmd

mymeta:
  key1: qmd specific value
---

When I run the following filtermeta.lua (with quarto render --trace), I see key1 but not key2:

function metapeek(m)
  quarto.log.debug("------ Meta")
  quarto.log.debug(m.mymeta)
end

return {
  { Meta = metapeek}
}

(D) ------ Meta
(D) {
  key1: Inlines {
    [1] Str {
      clone: function: 000002700b27c470
      text: "qmd"
      walk: function: 000002700b27cab0
    }
    [2] Space {
      clone: function: 000002700b27d9b0
      walk: function: 000002700b25e230
    }
    [3] Str {
      clone: function: 000002700b25d9b0
      text: "specific"
      walk: function: 000002700b25db70
    }
    [4] Space {
      clone: function: 000002700b31b8b0
      walk: function: 000002700b31acb0
    }
    [5] Str {
      clone: function: 000002700b31c6f0
      text: "value"
      walk: function: 000002700b31c1b0
    }
  }
}

So my question is how can I get key2 (project wise) ?

[cscheid]

This looks like a Quarto bug to me!

I created a small repro like this:

_quarto.yml

# _quarto.yml
project:
  type: website

website:
  title: "issue-11138"
  navbar:
    left:
      - href: index.qmd
        text: Home
      - about.qmd

format:
  html:
    theme: cosmo
    css: styles.css
    toc: true

mymeta:
  key1: projectwise_value
  key2: projectwise_value_2

index.qmd

---
title: "issue-11138"
filters:
  - test.lua
mymeta:
  key1: projectwise_value_override
---

This is a Quarto website.

To learn more about Quarto websites visit <https://quarto.org/docs/websites>.

Debugging

Quarto is clearly attempting to override the first key while maintaining the second value, as evidenced by the following printing:

$ quarto render index.qmd
pandoc
  to: html
  output-file: index.html
  standalone: true
  title-prefix: issue-11138
  section-divs: true
  html-math-method: mathjax
  wrap: none
  default-image-extension: png
  css:
    - styles.css
  toc: true

metadata
  document-css: false
  link-citations: true
  date-format: long
  lang: en
  mymeta:
    key1: projectwise_value_override
    key2: projectwise_value_2
  theme: cosmo
  title: issue-11138

But the metadata itself is wrong:

test.lua

function Meta(m)
  quarto.utils.dump(m.mymeta)
end

output

key1: table: 0x6000005c8b40
  1: Str "projectwise_value_override"

[mcanouil]

• Quarto improperly merges metadata for Lua filter use #11139