[Rd] UTF-8 encoding issue with R CMD check with install-args="--latex"

[Kurt Hornik]

>>>>> Ivan Krylov via R-devel writes:

Thanks.  Will try to fix ...

Best
-k

> В Thu, 16 Jan 2025 18:09:25 +0100
> Peter Ruckdeschel via R-devel <r-devel using r-project.org> пишет:

>> this is to report some minor UTF-8 encoding issue with R CMD check
>> with option --install-args="--latex" (and possibly more install-args).

> Thank you for a very detailed report!

> This doesn't happen on R-4.2.2 or 4.3.1, but it does happen on R-devel.

> Comparing the calls from R CMD check to R CMD Rd2pdf, I see no
> difference in the environment variables or any significant difference
> in the command lines. The command being run ends up being equivalent to

> R CMD Rd2pdf <package>.Rcheck/<package>

> ...and the source of the difference is the presence (or absence) of the
> <package>.Rcheck/<package>/latex directory. If I temporarily move it
> away during an R CMD check --install-args=--latex run, the command
> succeeds.

> Indeed, tools:::.pkg2tex says

>>> ## First check for a latex dir (from R CMD INSTALL --latex).
>>> ## Second guess is this is a >= 2.10.0 package with stored .rds
>>> ## files.
>>> ## If it does not exist, guess this is a source package.
>>> latexdir <- file.path(pkgdir, "latex")

> The individual *.tex files in the latex/ subdirectory of the installed
> package all do start with an "\inputencoding{utf8}" line.

> When the latex/ subdirectory doesn't exist, the !dir.exists(latexdir)
> branch is taken, where Rd2latex(...) is called with writeEncoding =
> FALSE, thus avoiding the problem.

> -- 
> Best regards,
> Ivan

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