Get target document path in filter?

[acederberg]

Description

I would like to know the path of the document being rendered by quarto in a lua filter. I see that PANDOC_STATE.input_files can be used but this only refers to a temporary path. Check out this issue for some context.

For example, the following filter will output a temporary file to quarto output:

-- get_path.lua
return {
  Meta = function(elem)
    print(PANDOC_STATE.input_files)
  end,
}

For a document

---
# index.qmd
title: Example
filters:
  - get_path.lua
---

An example.

The output looks like

List {/tmp/quarto-sessiondc8a16a2ac13383d/12f00ff4b29a4f9c/quarto-input946031eb6bab23e.md}
Output created: index.html

[mcanouil]

See:

• Is there a shortcode to get the relative path of the current file? #11719