Thank you very much.  The instructions are very clear and now I have a 
functional R session within an Emacs buffer:
<<R version 3.4.1 (2017-06-30) -- "Single Candle"
Copyright (C) 2017 The R Foundation for Statistical Computing
Platform: x86_64-apple-darwin15.6.0 (64-bit)

R is free software and comes with ABSOLUTELY NO WARRANTY.
You are welcome to redistribute it under certain conditions.
Type 'license()' or 'licence()' for distribution details.

  Natural language support but running in an English locale

R is a collaborative project with many contributors.
Type 'contributors()' for more information and
'citation()' on how to cite R or R packages in publications.

Type 'demo()' for some demos, 'help()' for on-line help, or
'help.start()' for an HTML browser interface to help.
Type 'q()' to quit R.

> > if(identical(getOption('pager'), file.path(R.home('bin'), 'pager'))) # 
> > rather take the ESS one
+       options(pager='cat')
> options(STERM='iESS', str.dendrogram.last="'", editor='emacsclient', 
> show.error.locations=TRUE)
> getwd()
[1] "/Users/rmbaskin”>>

Thank you very much - bob



> On Sep 13, 2017, at 5:18 PM, Stephen Eglen <sj...@cam.ac.uk> wrote:
> 
> 
> hi Robert,
> 
> 
> try the following steps and do report back
> 
> 1. On your mac, open terminal and start R from within the terminal.  if
> that works, what does "which R" report?  
> 
> 2. If 1 worked, open Emacs from within this terminal, and then do
> 
> M-x shell
> 
> to get a terminal within Emacs.  Does "R" work now, and if so, is it
> finding the right version of R (which R)?
> 
> If it doesn't find R, ESS probably won't work either.  Check your PATH
> within Emacs.
> 
> [I'm not sure Emacs will find R if you start Emacs from the "floating
> bar" thing, rather than from within a terminal, as you need to ensure
> your PATH etc is set up for Emacs to inherit it.]
> 
> 3. If step 2 worked, M-x R should work.
> 
> If not, what does it say?
> 
> 
> 
> 
> 
> 
> On Wed, Sep 13 2017, Robert Baskin wrote:
> 
>> I cannot get Emacs ESS to find R.
>> 
>> The error message:
>> "Finding all versions of R on your system...
>> Sorry, no version of R could be found on your system."
>> 
>> I can’t find any message on ess-help and the only similar message I can find 
>> on SO:
>> <https://stackoverflow.com/questions/31365411/how-to-invoke-ess-r-in-emacs-on-windows>
>> 
>> I have tried reloading Emacs ESS:
>> "GNU Emacs 25.2.1 (x86_64-apple-darwin13.4.0, NS appkit-1265.21 Version 
>> 10.9.5 (Build 13F1911))
>> of 2017-04-21
>> Copyright (C) 2017 Free Software Foundation, Inc."
>> downloaded from:
>> <https://vigou3.github.io/emacs-modified-macos/>
>> 
>> I have updated R:
>> "R version 3.4.1 (2017-06-30) -- "Single Candle"
>> Copyright (C) 2017 The R Foundation for Statistical Computing
>> Platform: x86_64-apple-darwin15.6.0 (64-bit)"
>> 
>> The macOS is Sierra, v10.12.6.
>> 
>> Any suggestions on how to solve this?
>> 
>> thanks - bob
>> 
>> ______________________________________________
>> ESS-help@r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/ess-help
> 

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