[Rd] New behavior when running script in package directory?

[Dominick Samperi]

Thanks Ivan, looks like bug in ESS, but I only noticed this recently, so it
may have been triggered by changes in recent R versions.

On Wed, Jun 21, 2023 at 12:26 PM Ivan Krylov <krylov.r00t using gmail.com> wrote:

> On Wed, 21 Jun 2023 11:49:24 -0400
> Dominick Samperi <djsamperi using gmail.com> wrote:
>
> > 1. Why does Emacs/ESS behave differently depending on the
> > current working directory?
> > 2. Why is the signal package loaded automatically?
>
> There's a "package development mode" in ESS:
> https://github.com/emacs-ess/ESS/blob/master/lisp/ess-r-package.el
>
> I think that ESS automatically detects that you're inside a package
> directory and adjusts its behaviour. This could be related to
> "namespaced evaluation"
> <https://ess.r-project.org/Manual/ess.html#Namespaced-Evaluation>
> ("evaluate code in the context of the package being developed", sounds
> useful), but I'm not sure about that.
>
> > 3. Why is that temporary file /tmp/foo.R!djSwRn created?
>
> It's probably some part of ESS's mechanism of running R code. I don't
> see where the temporary file name is constructed (maybe a built-in
> Emacs function?), but it probably comes from
> <https://github.com/emacs-ess/ESS/blob/master/lisp/ess-r-mode.el>.
> (Look for calls to .ess.source or .ess.ns_source.)
>
> > 4. What is that function ss() in the error message referring to?
>
> `ss` is a function defined by ESS in order to call R's source() in a
> way portable between a very wide range of R versions. (A comment in the
> same file says "Should work on *all* versions of R. Do not use _ in
> names, nor :: , nor 1L", which includes versions of R considered very
> old by now.):
>
> https://github.com/emacs-ess/ESS/blob/master/etc/ESSR/R/.basic.R#L178
>
> > 5. Could this be a virus? Under Ubuntu?
>
> A virus has little reason to be doing this to you. There's much more
> money to be made from malicious VSCode extensions than Emacs add-on
> packages.
>
> Since you've determined ESS to be causing the difference in the
> behaviour, perhaps
> <https://ess.r-project.org/index.php?Section=getting%20help> is the way
> to go? Unfortunately, I'm not a user of ESS or Emacs, so I'm going off
> what information I found on the Web, which may be outdated.
>
> --
> Best regards,
> Ivan
>

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