Make notebook tab-completion in R evaluation work right

[kcrisman]

From this stackoverflow post and this ask.sagemath post, the same question:

I know that when calls R with Sage,the dot will convert to underscores.
But even when I set the "system" to R with combo box above in notebook,
the dot will convert to underscores, and that is the problem. 
Is there any solution?

This is now Github issue 103. Note that I'm not sure whether this is in Sage or sagenb, though sagenb seems plausible.

Upstream: Reported upstream. No feedback yet.

CC: @jasongrout @fchapoton

Component: notebook

Keywords: R r-project

Issue created by migration from https://trac.sagemath.org/ticket/13070

[kcrisman]

Changed upstream from Not yet reported upstream; Will do shortly. to Reported upstream. No feedback yet.

[mkoeppe]

comment:8

Proposing to close all sagenb tickets as outdated, so that all remaining open tickets in the notebook component are about the Jupyter notebook.