[Rd] Suppressed "graphical parameter" warnings reviving themselves magically

[Rui Barradas]

Às 05:51 de 21/03/2025, Henrik Bengtsson escreveu:
> What's going on here?
> 
> $ R --vanilla --quiet
>> plot.new(); suppressWarnings({ points(0, 0, foo = TRUE) })
>> NULL
> NULL
> Warning messages:
> 1: "foo" is not a graphical parameter
> 2: "foo" is not a graphical parameter
> 
> Note how the warnings are revived in that second "NULL" call.  I can
> reproduce this in R 4.4.3 and R-devel (2025-03-19 r88003). This might
> be specific to "graphical parameter" warnings, because it won't happen
> with, say, suppressWarnings({ log(-1) }).
> 
> It also doesn't appear if I call split up the first call into to
> different REPL calls;
> 
> $ R --vanilla --quiet
>> plot.new()
>> suppressWarnings({ points(0, 0, foo = TRUE) })
>> NULL
> NULL
> 
> /Henrik
> 
> PS. I thought I had sent this many months ago, but I just now found
> this message in my draft folder, so now I'm not sure. Sorry, if this
> is a duplicate.
> 
> ______________________________________________
> R-devel using r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-devel
Hello,

I cannot reproduce this on Windows 11, R 4.4.3.
The command below is not exactly the same but I have tried it with the 
command in the OP and got the same result.



$ R --vanilla --quiet -f "rdevel.R" > ./Temp/rdevel.txt
 > plot.new(); suppressWarnings({ points(0, 0, foo = TRUE) })
 > NULL
NULL
 > sessionInfo()
R version 4.4.3 (2025-02-28 ucrt)
Platform: x86_64-w64-mingw32/x64
Running under: Windows 11 x64 (build 22631)

Matrix products: default


locale:
[1] LC_COLLATE=Portuguese_Portugal.utf8 
LC_CTYPE=Portuguese_Portugal.utf8
[3] LC_MONETARY=Portuguese_Portugal.utf8 LC_NUMERIC=C 

[5] LC_TIME=Portuguese_Portugal.utf8

time zone: Europe/Lisbon
tzcode source: internal

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

loaded via a namespace (and not attached):
[1] compiler_4.4.3
 >



Hope this helps,

Rui Barradas


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