[Rd] Setting locale to support UTF-8

[Duncan Murdoch]

In Sweave, if the locale is set to C, non-ASCII characters are not 
handled nicely even if I declare the encoding of the file to be "UTF-8". 
  I'm trying to find a workaround for this, because I'm using Sweave 
from within TeXShop.   TeXShop runs its typesetting engines in the C 
locale, and non-ascii characters are messed up.

Is there a way to declare that I am in a "generic" UTF-8 locale?  It is 
like the C locale in other respects, but it knows about UTF-8 characters.

Duncan Murdoch