Hi Martin
Probably not the answer you're looking for but on the latest Fedora 39
(workstation edition) both locally, and on a freshly installed VM (with just
R-core installed), all fonts render correctly for me in evince.
$ evince --version
GNOME Document Viewer 45.0
$ R --version
R version 4.3.3 (2024-02-29) -- "Angel Food Cake"
Copyright (C) 2024 The R Foundation for Statistical Computing
Platform: x86_64-redhat-linux-gnu (64-bit)
It may be worth sharing more details about your installation (e.g. Fedora
version) to see if anyone has any ideas.
Tim
On Mon, 11 Mar 2024, at 10:51 AM, Martin Maechler wrote:
> This problem has bugged me for several years now,
> and our own IT staff has tried a few things, but then never
> cared enough to persist fixing it.
>
> It *is* a bug in evince, the standard pdf viewer on Fedora and
> IIUC also quite few other Linux distributions, and
> *not* a bug in R; hence I am asking for help/hints here.
>
> A very simple example:
>
> -------------------------------------------------------------------------------
>
> (pdfil <- paste0("plotmath-example_R",
> with(R.version, paste0(major, sub("[.]", "", minor))),
> ".pdf"))
> ## "plomath-example_R433.pdf"
>
> pdf(pdfil)
> example(plotmath); mtext(R.version.string)
> dev.off()
>
> if(interactive())
> system(paste("evince", pdfil, "&"))
>
> -------------------------------------------------------------------------------
>
> The pdf contains 4 pages, and in all of them *some* of the math
> symbols are replaced by open rectangles -- because evince does
> not find the fonts it should.
>
> E.g.
> - page 1: \pi is properly shown, \phi not
> - page 2: all greek letters, \theta, \xi, \eta are *not* shown
> ...
>
> Simply typing
>
> example(plotmath)
>
> in the R console will show you everything as it should be but is
> not for us, using evince.
>
> However, *everything* is rendered correctly, if I use very old
> 'xpdf' {which you may have to install
>
> ## OTOH: This always work fine with the very old 'xpdf' :
> system(paste("xpdf", pdfil, "&"))
>
> So the fonts *are* somewhere on my machine, but evince does not
> find them;
>
> How should our IT people fix this?
>
> IIRC they did install the Zapf Dingbats fonts -- which then are
> found by xpdf but not by evince ?
>
>
> Thank you in advance,
> Martin
>
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> R-SIG-Fedora@r-project.org
> https://stat.ethz.ch/mailman/listinfo/r-sig-fedora
>
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