[ESS] what is font-lock-pre-idle-hook

[Stephen Eglen]

Thanks Jean

 > First Okay so I upgraded ess, no effect on the problem. The buffer is an
 > .R buffer.

Okay.  Is it all R buffers, or just particular ones?  (What is the
shortest example? is this is with "xemacs -q" and then loading ess?)
I just tried XEmacs 21.4 (p15) and do not get the warning.

 > There is no *Backtrace* buffer, I guess the reason been because xemacs
 > issues a warning rather than an error?

ah, okay.  Not sure if we can catch a backtrace then.
 > Emacs 21.3.1 does not have the problem. Same version of ESS

If you google for "font-lock-pre-idle-hook" you'll see it catches out
many different Elisp applications, all under XEmacs it seems.

Not sure what else we can do ... Rodney, do you see this problem?

Stephen