Re: Create multiple outputs from single defaults file

[BPJ <melroch-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

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Den ons 6 okt. 2021 13:14Pranesh Prakash <the.solipsist-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> skrev:
>
> Dear all,
>
> Since pandoc can now reference multiple defaults files within a single
defaults file, I thought it would be possible to run a single command to
generate multiple outputs.

It isn't. Pandoc only ever produces a single output per run, unless
something has changed very recently.

>
>
> ```
>
> $ cat defaults.yaml
>
> ---
>
> # General options
>
> defaults:
>
> -  defaults/cis_ihrl_69a.defaults.yaml
>
> -  defaults/cis_ihrl_69a.html.defaults.yaml
>
> -  defaults/cis_ihrl_69a.pdf.defaults.yaml
>
> ...
>
> ```
>
>
> The files `cis_ihrl_69a.html.defaults.yaml` and
`cis_ihrl_69a.pdf.defaults.yaml` have different `to:` lines.  I'd expect
both an HTML output as well as a PDF output when I do:

You can invert the pattern by having a file, say `common.yaml`, which
contains the settings common to HTML and PDF output and include it from
`html.yaml` and `pdf.yaml`:

``````yaml
to: html
defaults:
  - common.yaml
``````

``````yaml
to: latex
pdf-engine: xelatex
defaults:
  - common.yaml
``````

Then you can use a Makefile to run pandoc once for each output with each
defaults file:
(watch out for spaces where there should be tabs!)

``````make
all: document.html document.pdf

.PHONY: all

document.html: document.md html.yaml common.yaml
pandoc -d html.yaml $< -o $@

document.pdf: document.md pdf.yaml common.yaml
pandoc -d pdf.yaml $< -o $@
``````

Still nicer than including a loooong command line in the Makefile!

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