[R] bgroup not rendering properly

[Derek Ogle]

Thank you all for your help. I am using Windows. I ran the following both
in R 4.2.2 using RStudio and not using RStudio (but using the R GUI). In
both runs, plots within the GUI/RStudio and in the PNG output exhibited the
same issue that I reported originally., whereas plots in the PDF output
were perfect (no issue).

As asked, the first dev.cur() or .Device says "null device" whereas the
second says "Windows" when using the R GUI and "RStudioGD" when using
RStudio.

It sounds like this is likely a windows-related bug that will be fixed in
the next version. I can wait for that.

----
dev.cur()
.Device
plot(0,xlim=c(0,1),ylim=c(0,1))
text(0.5,0.5,expression(bgroup('(',atop(x,y),')')))

png("bgroup_R422.png")
plot(0,xlim=c(0,1),ylim=c(0,1))
text(0.5,0.5,expression(bgroup('(',atop(x,y),')')))
dev.off()

pdf("bgroup_R422.pdf")
plot(0,xlim=c(0,1),ylim=c(0,1))
text(0.5,0.5,expression(bgroup('(',atop(x,y),')')))
dev.off()

dev.cur()
.Device
plot(0,xlim=c(0,1),ylim=c(0,1))
text(0.5,0.5,expression(bgroup('(',atop(x,y),')')))


On Tue, Dec 13, 2022 at 5:48 AM Jinsong Zhao <jszhao using yeah.net> wrote:

>
>
> On 2022/12/13 18:02, Martin Maechler wrote:
> >>>>>> Jinsong Zhao
> >>>>>>      on Tue, 13 Dec 2022 17:07:00 +0800 writes:
> >      > I don
> >
> >      >  On 2022/12/13 10:13, Derek Ogle wrote:
> >      >> bgroup() from plotmath does not render properly for
> >      >> me. For example
> >      >>
> >      >> plot(0,xlim=c(0,1),ylim=c(0,1))
> >      >> text(0.3,0.5,expression(bgroup('(',atop(x,y),')')))
> >      >> text(0.7,0.5,expression(group('(',atop(x,y),')')))
> >
> > Almost surely a  Windows-only problem i.e. bug,
> > See also the bug fixed yesterday, PR#18440,
> > https://bugs.r-project.org/show_bug.cgi?id=18440
> >
> >
> I do not observe the problem in that bug report. All works fine.
>
> Best,
> Jinsong
>
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