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   Re: ANNOUNCE: Apache XML encoding detector update

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  • From: John Cowan <cowan@locke.ccil.org>
  • To: XML Dev <xml-dev@ic.ac.uk>
  • Date: Mon, 26 Apr 1999 11:06:43 -0400

Matthew Sergeant (EML) wrote:

> Also, a note to John Cowan: In reading through your detector I noticed that
> it only checks for g=["']...["'], not the full encoding=["']...["'] -
> Personally I don't think that's safe, but having read your C code (and
> knowing C's poor handling of strings) I can understand why you did it... <g>

Actually, it *is* safe.  Once we see "<?xml ", where the last character
can be any whitespace character, we know beyond doubt that this is
an XML declaration/text declaration.  The first "g" appearing in
the declaration is necessarily the last letter of "encoding", unless
XML is extended to a version number that includes the letter "g",
which is most unlikely.  The only other way that a "g" can appear is
within the name of the charset itself.

John Cowan	http://www.ccil.org/~cowan		cowan@ccil.org
	You tollerday donsk?  N.  You tolkatiff scowegian?  Nn.
	You spigotty anglease?  Nnn.  You phonio saxo?  Nnnn.
		Clear all so!  'Tis a Jute.... (Finnegans Wake 16.5)

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