[R-sig-Debian] Warning messages in terminal after running help.start() and accessing the package index

[Henrik Bengtsson]

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 using 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
>
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