[ESS] file completion R script buffer not auto completing

[Stephen Sefick]

Hello:

Long time R user; new ESS user. Thank you all so much for this wonderful
IDE. I am having problems with the ESS and the R script buffer.

I would like to be able to use an autocomplete file name/path like in R
studio. I am sure that I am missing something in my .emacs file. Please
let me know what things would be helpful to post in order to diagnose my
problem.

I appreciate the help.
kindest regards,

Stephen