Re: Interpolation in default file paths -- the current output format?

[John MacFarlane <jgm-TVLZxgkOlNX2fBVCVOL8/A@public.gmane.org>]

You can already interpret arbitrary environment variables,
so you could do:

FORMAT=docx pandoc -t $FORMAT -d defaults

and in defaults.yaml you could have

output-file: output.${FORMAT}
defaults: ${.}/defaults/${FORMAT}.yaml

BPJ <melroch-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> writes:

> I have been thinking about the feature with `${HOME}` etc. in default file
> paths. It would be good to also have `${OUTPUTFORMAT}` (or just `${FORMAT}`
> like the Lua variable) so that you could do things like this:
>
> ``````yaml
> defaults:
>   - ${.}/defaults/${FORMAT}.yaml
> ``````
>
> Filters, CSS, includes and metadata/variables come to mind as things which
> often should be different based on the output format in a single-source
> scenario which could be handled this way, but there probably would be other
> uses which at least I can't foresee.
>
> While there certainly are situations where you could invert this and say
>
> ``````yaml
> defaults:
>   - ${.}/defaults/common.yaml
> ``````
>
> in `./defaults/latex.yaml` there certainly are situations where including
> the format-specific file from the common file will be more intuitive.
>
> /bpj
>
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