I am using the windows version of emacs that includes AuTeX and ESS from Vincent Goulet. I was using an older version of this packaging with a couple different versions of R. I recently installed the new version of R (4.0.2) and am attempting to connect it to emacs. I have added the directory that contains the R version 4.0.2 to my path and also added the folder that contains the 3 different version of R that are installed on my machine. When I open a .R file and open an instance of R it opens an R version of 4.0.2. However, when I go to the ESS menu and try to start a new process (ESS>Start Process>Other>) the options that I see are R-3.4.4-32bit, R-3.4.4-64bit, R-3.5.1-32bit, R-3.5.1-64bit. Similarly, if I try to complete
M-x R the options do not include the R-4.0.2 version. Also when I tried
M-x R-newest I got the error: Symbol's function definition is void R-newest. I have tried again to run
M-x R-newest but now it stats [no match].
I was previously using an older release version Vincent Goulet's emacs but updated it while attempting to fix this issue. The current version I am using is emacs 26.3 with ESS 18.10.2. I have tried changing the PATH variable in numerous ways to include/exclude the directory of the R verions for the older versions. I tried looking in the lisp and changing some custom variables in my .emacs file to no avail, such as
(custom-set-variables '(ess-rterm-version-paths (quote ("C:/Program Files/R/R-4.0.2/bin/x64/Rterm.exe" "C:/Program Files/R/R-4.0.2/bin/i386/Rterm.exe" "C:/Program Files/R/R-3.5.1/bin/i386/Rterm.exe" "C:/Program Files/R/R-3.4.4/bin/i386/Rterm.exe" "C:/Program Files/R/R-3.5.1/bin/x64/Rterm.exe" "C:/Program Files/R/R-3.4.4/bin/x64/Rterm.exe"))) )
How do I get ESS to recognize R-4.0.2 (both 32bit and 64bit) and add it to the list of available processes?