[GRASS-user] GRASS in EMACS with ESS - how to send more than one line at a time

[Glynn Clements]

Adam Wilson wrote:

> I use GRASS and R within a EMACS-ESS environment, which works quite well
> overall.  I can keep a script that uses both GRASS and R in a single script
> file and bounce back and forth between them as I need for analysis (i.e.
> "system("grass64 /media/Data/Work/grassdata/CFR/biomass")" to go to GRASS
> from R, and "R" to go to R from GRASS).  When within a R environment, I can
> send multiple lines from a buffer to the R proccess with a C-c C-r
> keystroke, which works brilliantly.
> 
> But when I am in the GRASS environment, I am only able to send one line at a
> time or it will hang until I hit C-g (which results in only the first line
> of the region being sent).  I imagine that this is because ESS is waiting
> for the standard R prompt ">" before sending the next line, but while in
> GRASS the prompt is something more like "GRASS 6.4.0RC5
> (CFR):/grassdata/map> " so ESS doesn't know that the previous command is
> finished and just waits until I cancel it with C-g.   Anyone found a
> solution to this problem?

Try adding:

	export PS1='> '

to ~/.grass.bashrc.

Beyond that, consider bypassing the grass64 script for any
"unconventional" use of GRASS. It really isn't suitable for anything
other than its intended usage (being run from a terminal to create an
interactive session).

-- 
Glynn Clements <glynn at gclements.plus.com>