Expat user group or mailing list?

[Rick Jelliffe]

From: James Clark <jjc at jclark.com>

>If your document isn't in UTF-8, then you need to tell expat either by
>using an encoding argument to XML_CreateParser or by supplying an
>appropriate encoding declaration, such as
>
><?xml version="1.0" encoding="iso-8859-1"?>

Am I right in thinking that for a parser to conform the the RFC on MIME
types for XML, it must allow over-riding of the encoding declaration (i.e.
by a invocation argument of some kind)? (Ignoring the case where only UTF-8
and UTF-16 are supported by a parser.)

If a parser does not allow over-riding, what class of errors do we call
this? Is it a WF error, or does it just mean that that parser cannot be used
in a WWW client that must conform to the RFC (unless some pre-processor is
tacked on)?

Also, as a question of terminology, is there any common name for the
intersection of two character sets?  In particular, if we pivot a large
character set through a smaller one (changing non-intersection characters
with NCRs) and then back to the larger set (while keeping all the NCRs
belonging to the smaller set) in order to have XML files which can withstand
dumb transcoding, is there any terminology I can use?  Anyone got any idea?

Rick Jelliffe



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