Re: Filter with arguments

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

+++ Matthew Pickering [Jan 06 17 18:42 ]:
>Communicating arguments though env vars is very ad-hoc, an option

I still haven't understood the case against using
environment variables.  In what way are they "ad hoc"?
They are pretty standardly used to communicate options to
'make', for example.

It's just about the same effort to write

    MYARG=blah pandoc --filter foo

as to write

    pandoc -filter foo --filter-args blah

And an added advantage of environment variables is that
you can set them once and then not have to repeat.