[ESS] Prevent ESS From Writing .Rhistory

[Stephen Eglen]

> Yes, the dots appear in the minibuffer.  Then when the minibuffer goes
> away, the password is displayed in the
> *R* buffer.

Are you sure?

When I do this:

  cat(" Password: "); pwd <- readLines(file("stdin"), 1)

Then I all I see in *R* is:
 Password: >

and I would consider it a bug to have the password echoed.  (Not just
for ESS but for shell/other comint modes).

Stephen