[ESS] ess-execute-screen-options sets wrong width

[Ali Tofigh]

When I run emacs in the terminal, ess-execute-screen-options sets the
width of the screen to one more than it should be. I think this has to
do with an extra column that is being used in the emacs buffer in
which R is running. This extra column appeared at some point when I
updated my emacs and/or ess. Anyway, this means that the width is
always set to the wrong value resulting in many print statements
having the text wrap in the R buffer.

Here is what my emacs R buffer looks like. Note the extra first column
and the "!" that is being displayed on the next to last line. I have
no idea what that is...

------------------------------ 8< ------------------------------
 R version 3.0.1 (2013-05-16) -- "Good Sport"
 Copyright (C) 2013 The R Foundation for Statistical Computing
 Platform: x86_64-apple-darwin10.8.0 (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.

 > options(STERM='iESS', str.dendrogram.last="'",
editor='emacsclient', show.error.locations=TRUE)
!> options(width=156, length=99999)
 >
------------------------------ 8< ------------------------------

/ali