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

[Duncan Murdoch]

I don't know what's going on, but I see a version of it in R 4.4.2 on 
MacOS in the console, but not in R.app.

The difference is I only get one of the warnings, and only on the first 
attempt:

> $ R
> 
> R version 4.4.2 (2024-10-31) -- "Pile of Leaves"
> Copyright (C) 2024 The R Foundation for Statistical Computing
> Platform: aarch64-apple-darwin20
> 
> R is free software and comes with ABSOLUTELY NO WARRANTY.
> You are welcome to redistribute it under certain conditions.
> Type 'license()' or 'licence()' for distribution details.
> 
>   Natural language support but running in an English locale
> 
> R is a collaborative project with many contributors.
> Type 'contributors()' for more information and
> 'citation()' on how to cite R or R packages in publications.
> 
> Type 'demo()' for some demos, 'help()' for on-line help, or
> 'help.start()' for an HTML browser interface to help.
> Type 'q()' to quit R.
> 
>> plot.new(); suppressWarnings({ points(0, 0, foo = TRUE) })
>> NULL
> NULL
> Warning message:
> "foo" is not a graphical parameter 
>> plot.new(); suppressWarnings({ points(0, 0, foo = TRUE) })
>> NULL
> NULL

In R.app I don't seem to see it at all.

Duncan Murdoch



On 2025-03-21 1:51 a.m., Henrik Bengtsson wrote:
> 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.
> 
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