[ESS] ESS and R... death to Emacs...

[Dan Bolser]

Hi,

I am R Version 2.2.1  (2005-12-20 r36812)
ESS version 5.2.12
Linux 2.6.15-1.1833_FC4 i686 athlon i386 GNU/Linux


The following R/ESS session causes a permanant 'hang', and kills my 
emacs session...

# Start Emacs,
# Start an R process (M-x R)
# Evaluate the following line;
par(ask=T)

# Evaluate the following *region*;
plot(rnorm(50))
plot(rnorm(50))



When the last two lines are sent *together* to the R process (via M-x 
ess-eval-region), the session 'crashes'.

Anyone else got the same problem?

Basically I think the fact that the emacs buffer 'hangs' while R is 
'buisy' causes the problem. The first plot request is sent, and the 
buffer hangs as R becomes 'buisy', then R asks for user input, but that 
request is never echoed back to the user (because the buffer is 
'hanging'). This is just a guess.

If the emacs buffer didn't go unresponsive while R is buisy, I don't 
think this problem would occur. Like when you run a big process in R, 
you can't use that emacs session for anything else because it is waiting 
on R to finish.

Any way to get round this 'hang'?


Cheers,
Dan.