[Rd] _R_CHECK_LENGTH_1_LOGIC2_ setting and Rstudio ..

[Martin Maechler]

>>>>> Martin Maechler 
>>>>>     on Fri, 15 Nov 2019 17:31:15 +0100 writes:

    > as ((strongly recommended by me for package developers !))

    > _R_CHECK_LENGTH_1_CONDITION_=true
    > _R_CHECK_LENGTH_1_LOGIC2_=verbose

Apropos, for many months now, when very occasionally using
Rstudio (notably for teaching to beginners),
I've needed to use a wrapper shell script *unsetting* these,
because otherwise I've got "a bomb" from trying to run Rstudio,
as it internally uses code that fails when
 _R_CHECK_LENGTH_1_LOGIC2_
is activated, see the screen shot (from the very latest
Rstudio 1.2.5019), 
at least in my case where I use a non-trival  'options(repos = ..)'
in my startup.


-------------- next part --------------
A non-text attachment was scrubbed...
Name: rstudio_killed_by_R_CHECK_screenshot.png
Type: image/png
Size: 63993 bytes
Desc: not available
URL: <https://stat.ethz.ch/pipermail/r-devel/attachments/20191115/5caac0da/attachment.png>