[ESS] ESS M-x R failing in a Windows installation

[Jeremie Juste]

Hello,

I suspect there is a bug regarding the variable ess-rterm-version-paths
It is now available in ess-custom.el but is nil by default.

This should not be the case. It should have the value

(setq ess-rterm-version-paths
      (ess-flatten-list
       (delete-dups
        (if (not ess-directory-containing-R)
            (if (getenv "ProgramW6432")
                (let ((P-1 (getenv "ProgramFiles(x86)"))
                      (P-2 (getenv "ProgramFiles(x64)")))
                  (nconc
                   ;; Always 32 on 64 bit OS, nil on 32 bit OS
                   (ess-find-rterm (concat P-1 "/R/") "bin/Rterm.exe")
                   (ess-find-rterm (concat P-1 "/R/") "bin/i386/Rterm.exe")

                   ;; Keep this both for symmetry and because it can happen:
                   (ess-find-rterm (concat P-1 "/R/") "bin/x64/Rterm.exe")

                   ;; Always 64 on 64 bit OS, nil on 32 bit OS
                   (ess-find-rterm (concat P-2 "/R-4.03/") "bin/Rterm.exe")
                   (ess-find-rterm (concat P-2 "/R-4.03/") "bin/i386/Rterm.exe")
                   (ess-find-rterm (concat P-2 "/R-4.03/") "bin/x64/Rterm.exe")))
              (let ((PF (getenv "ProgramFiles")))
                (nconc
                 ;; Always 32 on 32 bit OS, depends on 32 or 64 process on 64 bit OS
                 (ess-find-rterm (concat PF "/R/") "bin/Rterm.exe")
                 (ess-find-rterm (concat PF "/R/") "bin/i386/Rterm.exe")
                 (ess-find-rterm (concat PF "/R/") "bin/x64/Rterm.exe"))))
          (let ((PF ess-directory-containing-R))
            (nconc
             (ess-find-rterm (concat PF "/R/") "bin/Rterm.exe")
             (ess-find-rterm (concat PF "/R/") "bin/i386/Rterm.exe")
             (ess-find-rterm (concat PF "/R/")
                   "bin/x64/Rterm.exe")))))))
                   
as in ess-r-mode.el. Please check again as I may have modified it. 

Best regards,
Jeremie



On Wednesday, 10 Mar 2021 at 15:40, Sparapani, Rodney via ESS-help wrote:
> Hi Jeremie:
>
> As you say, Windows installs do depend on the user’s preferences.
> However, in ancient ESS (circa 2004), we coded around this by
> going to the Windows registry.  However, I have rarely used
> Windows since so I can’t say how that approach might be
> used today (or if it is, how it might be failing).  I think a big
> issue is that few (if any) ESS developers are using Windows.
> Rich was probably the rear guard and he switched to Mac.
>
> PS. the old registry discussions are probably in the archives
> https://stat.ethz.ch/pipermail/ess-help/
>
> --
> Rodney Sparapani, Associate Professor of Biostatistics
> Chair ISBA Section on Biostatistics and Pharmaceutical Statistics
> Institute for Health and Equity, Division of Biostatistics
> Medical College of Wisconsin, Milwaukee Campus
>
> 	[[alternative HTML version deleted]]
>
> ______________________________________________
> ESS-help using r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/ess-help

-- 
Jeremie Juste