R SIG Debian - Jul 2018 - Warning messages in terminal after running help.start() and accessing the package index

Dear list-members,

I have switched (back) to a terminal-based workflow for a while now
and have noticed that after starting the HTML-based help
[help.start()], then visiting the package-list (at
http://127.0.0.1:<random_port>/doc/html/packages.html), and after the
accessed page has been "generated" (as indicated by the message
"Making 'packages.html' ... done"), as soon as the first
command is
entered at the command prompt the following warning appears:

Warning messages:
1: In is.na(x) : is.na() applied to non-(list or vector) of type 'NULL'
2: In is.na(x) : is.na() applied to non-(list or vector) of type 'NULL'

This happens on both R-3.4.4 and R-3.5.1 running in XFCE-Terminal and Sakura.

Is there a way to suppress/fix the reason for these warning messages?

Cheers,
Ivailo

Set option(warn = 2) to turn those warnings into errors. Then look at
traceback() to find out where they're coming from.

Also, see if you can replicate it in a fresh R --vanilla session.

My $.02

Henrik


On Thu, Aug 2, 2018, 09:41 Ivailo <ubuntero.9161 at gmail.com> wrote:
> Dear list-members,
>
> I have switched (back) to a terminal-based workflow for a while now
> and have noticed that after starting the HTML-based help
> [help.start()], then visiting the package-list (at
> http://127.0.0.1:<random_port>/doc/html/packages.html), and after the
> accessed page has been "generated" (as indicated by the message
> "Making 'packages.html' ... done"), as soon as the first
command is
> entered at the command prompt the following warning appears:
>
> Warning messages:
> 1: In is.na(x) : is.na() applied to non-(list or vector) of type
'NULL'
> 2: In is.na(x) : is.na() applied to non-(list or vector) of type
'NULL'
>
> This happens on both R-3.4.4 and R-3.5.1 running in XFCE-Terminal and
> Sakura.
>
> Is there a way to suppress/fix the reason for these warning messages?
>
> Cheers,
> Ivailo
>
> _______________________________________________
> R-SIG-Debian mailing list
> R-SIG-Debian at r-project.org
> https://stat.ethz.ch/mailman/listinfo/r-sig-debian
>
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