[ESS] slow scrolling with Emacs CVS

[Erik Iverson]

Michael -

I am using Emacs CVS with Xft font rendering.  Do you mean that when you 
have a buffer of R code, say example.R, that scrolling through the code 
with C-v (or C-n) is slow?  If so, I do not notice this problem.  I am 
on RHEL 5.

My .emacs is fairly minimal, loading the color-theme package is about 
the only thing that seems non-trivial in it.

Have you tried different .R files?



Michael Lawrence wrote:
> Hi,
> 
> For some reason, buffers with ess-mode (R code) buffers scroll very slowly
> (either with the keyboard or mouse on the scrollbar) ever since about a
> month ago with Emacs CVS. This does not seem to occur with Emacs 22.2. Nor
> does it occur with any other mode, as far as I've tested (c-mode,
> latex-mode, etc). Of course, a lot of this would depend on my configuration
> (.emacs), but I've turned off things like font-lock and smooth scrolling,
> and the problem remains. My ESS version is 5.3.7.
> 
> I thought it might be due to the Xft font rendering, so I tried to build CVS
> without xft, but the build failed. I then selected a non-Xft font, but the
> problem persisted.
> 
> So in summary I've only reduced it to a difference between Emacs 22.2 and
> CVS HEAD.
> 
> Any help is much appreciated,
> Michael
> 
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