[ESS] fill-column in Rnw files

[Kasper Daniel Hansen]

If I set the fill-column in an Rnw file to a non-standard value (say
100, standard is 70) inside a Latex chunk and I move around and pass
an R chunk, the fill-column value gets reset.  This looks like a bug
to me.

ESS 5.14
Emacs 23.3.50.1 compiled locally (using --with-ns) OS X Snow Leopard.

And I see the same under

ESS 5.14
Emacs 23.3.1 compiled locally under Red Hat Linux

Kasper