Sorry, I wasn't being accurate. I meant is it reasonable to expect  
to be left as   when outputting us-ascii.
If the xsl system claims to support us-ascii as an output encoding in
the xml output method then it _must_ write out character 160 as
  (which isn't really "leaving it" as it changes one character into
six. As has been stated earlier if your processor isn't doing that
then that's a bug. But a processor isn't forced to support us-ascii at
all.
David
--
The LaTeX Companion
http://www.awprofessional.com/bookstore/product.asp?isbn=0201362996
http://www.amazon.co.uk/exec/obidos/tg/detail/-/0201362996/202-7257897-0619804
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