Thanks again! I see now that having Japanese characters in the pdf help is much
more difficult to put into practice than I thought.
I can imagine that it is not desirable for CRAN package checks if packages try
to set all sorts of environment variables that make them perform in
unpredictable ways. On the other hand it seems that there might be some
interest to display characters of major writing systems (which may well occur
as the subject matter of packages) also in the pdf help. So maybe the solution
is to allow for a file in the man folder that allows to specify other flavors
of latex and makes injections into the preamble (I might turn this into a
better formulated feature request at some later point...)
I have checked out other Japanese script related packages on CRAN and it seems
the common solution is to use potentially long sequences of \u escapes (which
will then only be rendered as numbers of course). For now I will do the same,
i.e. just run a script on the .Rd files that replaces CJK characters by their
escape values before submitting to CRAN (and keep the other variant on GitHub).
Best regards,
Dominic
> On 19. May 2023, at 10:51, Ivan Krylov <krylov.r...@gmail.com> wrote:
>
> В Thu, 18 May 2023 12:48:01 +0000
> "Schuhmacher, Dominic"
> <dominic.schuhmac...@mathematik.uni-goettingen.de> пишет:
>
>> By the way, what is the recommended way of setting environment
>> variables like PDFLATEX and (possibly) RD2PDF_INPUTENC in a package
>> (if this is something that is allowed on CRAN)?
>
> I don't think there is a supported way of doing that. It would have to
> affect quite a lot of cases of rendering help pages, including
> help(help_type = 'pdf').
>
> For better or worse, environment variables set from inside
> \Sexpr[stage=render]{...} currently persist until texi2pdf() is run,
> but that's intrusive because it affects all following texi2pdf() calls
> from the same process.
>
> Perhaps it's worth discussing as a feature request on R-devel?
>
> --
> Best regards,
> Ivan
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