That's done it :)

pandoc --standalone --toc --number-sections --pdf-engine=xelatex --template 
pandoc.latex test.docx -o test99.pdf --lua-filter=meta.lua 
--metadata=metadata_file:metadata.yaml

output PDF looks exactly the same as 

pandoc --standalone --toc --number-sections --pdf-engine=xelatex --template 
pandoc.latex metadata.yaml test4.md -o test4.pdf

On Tuesday, 14 November 2017 10:07:53 UTC+10:30, Kolen Cheung wrote:
>
> I think you nailed it ;)
>
> This is safer and more reliable. May be put it somewhere as an example? 
> (e.g. the lua filter doc.?)
>
> On Monday, November 13, 2017 at 1:19:02 AM UTC-8, 
> albert.k...-stqabkCVF6SGlKaCpJGLJw@public.gmane.org wrote:
>>
>> Lua filters are my hammer which makes everything look like a nail, so 
>> here is a suggestion on using those to get what you want:
>>
>> function Meta(meta)
>>   local f = io.open(meta.metadata_file, 'r')
>>   local content = f:read('*a')
>>   f:close()
>>   return pandoc.read(content).meta
>> end
>>
>>
>> Safe the above to a file and call pandoc with 
>> --lua-filter=<that-file>.lua and --metadata=metadata_file:<your-yaml-file>. 
>> It will overwrite all metadata using the contents of the yaml file.
>>
>> See also this issue: https://github.com/jgm/pandoc/issues/3115
>>
>> On Sunday, November 12, 2017 at 10:34:02 PM UTC+1, scl...-DpHT0TjK6O80n/F98K4Iww@public.gmane.org 
>> wrote:
>>>
>>> Hmm ok - I'll look into that :)
>>>
>>> The workflow is probably more edge case from the standard use of pandoc 
>>> for academic writing.
>>>
>>> What we want to achieve:
>>>
>>> User -> editor of choice -> save in native format
>>> Apply YAML metadata with user details and extracted customer/client 
>>> details from CRM
>>> Apply customised style to ensure consistency
>>> Apply template to ensure consistent cover page, TOC format, 
>>> copyright/confidentiality notice, commercial in confidence footer
>>>
>>> Export to PDF for all the good reasons you use PDF for official 
>>> documents ;)
>>>
>>>
>>>
>>

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