Thanks a lot, John

Using `variables:` instead of `metadata:` does the trick.

Thanks again,
Oliver

On 4 Jul 2023, at 7:45, John MacFarlane wrote:

> This will work in header-includes in your document's metadata, but not 
> in header-includes in the metadata section of a defaults file file. 
> The reason is that, as documented, values passed to --metadata are 
> parsed as plain text, while metadata in a markdown file is parsed as 
> markdown.
>
> You could try
>
> variables:
>   header-includes:
>     - \usepackage{tikzsymbols}
>
> Variable text is passed through unchanged (so no escaping).
>
>> On Jul 3, 2023, at 1:46 AM, Oliver <news-WPTjrydoUPgeaOpM6FAJmQkbCANdLtlA@public.gmane.org> 
>> wrote:
>>
>> Hi there
>>
>> In a markdown document I can add for the LaTeX writer the following 
>> in the YAML metadata blocK:
>>
>> ---
>> header-includes:
>>   - \usepackage{tikzsymbols}
>> ...
>> Then I can use in the document things like \Cooley[-3][cyan] and 
>> more. :-)
>>
>> However I was not able to add this \usepackage declaration to a 
>> defaults file. I tried in my defaults file myarticle.yaml the 
>> following:
>>
>> from: markdown+raw_attribute
>> metadata:
>>   documentclass: scrartcl
>>   header-includes:
>>     - \usepackage{tikzsymbols}
>> but then I get the Latex error:
>>
>> ! LaTeX Error: Missing \begin{document}.
>> [...]
>> l.46 \textbackslash
>> Somehow the \usepackage{tikzsymbols} command is now „escaped“ so 
>> that the backslash get printed out... How can I avoid this and give 
>> the \usepackage declaration in the defaults file?
>>
>> Thanks for any pointers!
>>
>> Oliver
>>
>>
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