Thank you William, problem solved!

Il giorno venerdì 10 giugno 2022 alle 18:31:27 UTC+2 William Lupton ha 
scritto:

> i think you need to distinguish defaults (command-line options) and 
> metadata (although perhaps there's some overlap?).
>
> this works:
>
> % cat file.md   # I don't think you can specify the name of the defaults 
> file here, so I removed it; also not sure about ${.}
>
> ---
> title: This is a simple Markdown file
> author: Emiliano
> ---
>
> # Heading
>
> This is the content of the section.
>
> % cat defaults.yaml 
> pdf-engine: wkhtmltopdf
>
> % cat config.yaml 
> lang: en-US
> papersize: a4
> linestretch: 1.5
> mainfont: "Palatino"
> geometry:
>   - top=2.5cm
>   - left=3cm
>   - right=3cm
>   - bottom=2.5cm
>
> % pandoc --defaults defaults.yaml --metadata-file config.yaml file.md -o 
> file.pdf
> Loading pages (1/6)
> Counting pages (2/6)                                               
> Resolving links (4/6)                                                     
>   
> Loading headers and footers (5/6)                                         
>   
> Printing pages (6/6)
> Done                                      
>
> On Fri, 10 Jun 2022 at 17:06, Emiliano <gattulli...-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
>
>> Hello everyone!
>>
>> I'm trying to simplify the YAML section of my Markdown files by writing 
>> most of my settings in a separate default file or metadata file. The idea 
>> is to write just a few lines of YAML in my Markdown file and then having a 
>> separate file (let's call it config.yaml) in which I can set everything 
>> else. Let me provide a practical example:
>>
>> > file.md
>> ```markdown
>> ---
>> title: This is a simple Markdown file
>> author: Emiliano
>> default: ${.}/config.yaml
>> ---
>>
>> # Heading
>>
>> This is the content of the section.
>> ```
>>
>> > config.yaml
>> ```yaml
>> ---
>> lang: en-US
>> papersize: a4
>> linestretch: 1.5
>> mainfont: "Palatino"
>> geometry:
>>   - top=2.5cm
>>   - left=3cm
>>   - right=3cm
>>   - bottom=2.5cm
>> pdf-engine: xelatex
>> ---
>> ```
>>
>> This very example I provided does not work! Do you have any idea of how 
>> to solve this issue?
>>
>> Many thanks in advance!
>> Emiliano
>>
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>>
>

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