How to set a group of custom default options?

[pipme]

Description

In a qmd file we specify the format as below:

format:
  html: default
  pdf:
    toc: false
    cite-method: biblatex

My question is, can we instead specify with:

format:
  html: default
  pdf: custom-pdf

where custom-pdf is defined in _metadata.yml like:

custom-pdf:
    toc: false
    cite-method: biblatex

[cderv]

I think best way would be to define a custom format as Extension to use with your projects. See more at https://quarto.org/docs/extensions/formats.html

You can use extension several ways: https://quarto.org/docs/extensions/managing.html and distribute them also several ways https://quarto.org/docs/extensions/distributing.html

[pipme]

Thanks. I tried a bit but weirdly it seems not working for toc: false but working for number-sections: true. Not sure if it's a bug or some mistakes from my side. My quarto version is 1.3.361.

The procedure I followed was:

• set up the extension via quarto create extension format:pdf with extension name custompdf
• install it by running quarto add custompdf.

The _extension.yml is:

title: Custompdf
author: pipme
version: 1.0.0
quarto-required: ">=1.3.0"
contributes:
  formats:
    pdf:
      toc: false
      number-sections: true
      include-in-header: header.tex

Also I don't quite like the suffix in the output. Just pdf would be better :D

[pipme]

Maybe it's better to be able to write in _metadata.yml for populating a customised default for the folder, without introducing new format names?

[pipme]

Or specify all formats' defaults in _metadata.yml but be able to include only certain formats for generation in the qmd file.

format:
    pdf:
       ...
    revealjs:
       ...