R help - Jun 2010 - Bug with ESS? R freezes after cat()

Dears,


I am tumbling over something that appears to me as a bug. If I run the following
code using ESS in one block (CTRL+C CTRL+R), R (or ESS) just freezes. Running
the same line by line does not cause the error. Running the same from the R Gui
either in steps or in a block does not produce the freezes either.

i=2
a=rep('Hallo',times=2)
cat('b')
cat(i)
c=a[i]


Is the freeze reproducable on some other machines? Do use cat() in a non
appropriate way?

I am using ESS 5.8, R 2.10.1 on a WinXP machine.


Cheers
Jannis

I will guess that your use of cat without a line end leaves ESS waiting for
a prompt.

cat("b", "\n")

would be the way to avoid that.

The way to unfreeze ESS (and emacs more generally) is Ctrl-g

Please put followup ESS questions on the ESS list
ess-help@stat.math.ethz.ch



Rich

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