[ESS] ESS unable to find R on Linux when emacs started by opening a .R file

[Stephen Eglen]

> A little google searching suggest something similar can affect Mac OS X too
> http://emacs.stackexchange.com/questions/550/exec-path-and-path so i wonder
> if this is something more to do with Gnome 3.16 and /or how Fedora have it
> and emacs configured.

hi Gavin,
glad we have found the source of the problem (and that it is not
specific to ESS).  It is also not specific to Emacs; as rodney points
out, it is a problem with the environment that your window manager has.
e.g. .bashrc files are not sourced I think by the window managers, so
any settings you have in there won't be applied.

If however you can open from the window manager using emacsclient, you
might get a better experience.

Stephen