RE: [xsl] Re: Character 150 withs Windows-1252 output

["Michael Kay" <mike@xxxxxxxxxxxx>]

> Reading around a bit 150 is a control character... so does 
> that mean it shouldn't appear in source XML document 
> (unresolved) where the encoding is specified as ISO-8859-1 ??

I believe that in the ISO standard ISO 8859/1, the control blocks C0 and C1
(which includes 150) are unused - they are not part of the character set.
However, according to Wikipedia [1], "the character map ISO_8859-1:1987,
more commonly known by its preferred MIME name of ISO-8859-1 ... assigns the
C0 and C1 control characters to the code values 00-1F, 7F, and 80-9F. 

The XML recommendation defines encodings in terms of their IANA definitions
not their ISO definitions, so on that basis ISO-8859-1 does include the
control character 150.

In XML 1.1, there is a requirement that C0 and C1 characters (with obvious
exceptions such as TAB) must be represented as character references. This is
primarily to catch the common error where a Windows 1252 file is mislabelled
as ISO-8859-1.

[1] http://en.wikipedia.org/wiki/ISO_8859-1

Michael Kay
http://www.saxonica.com/