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Re: [off-topic] xtext -- encoding declarations for text

• To: Rick Jelliffe <ricko@a...>
• Subject: Re: [off-topic] xtext -- encoding declarations for text
• From: John Cowan <jcowan@r...>
• Date: Fri, 23 May 2003 10:54:32 -0400
• Cc: xml-dev@l...
• In-reply-to: <058301c31e13$b9200080$4bc8a8c0@A...>
• References: <058301c31e13$b9200080$4bc8a8c0@A...>
• User-agent: Mutt/1.4.1i

Rick Jelliffe scripsit:

> Comments welcome. 

The following regex (to be interpreted as referring to bytes, not characters)
should reliably detect the presence of an xtext declaration.  

\A(\0*.){1,4}\0*(x\0*t\0*e\0*x\0*t\0* |\xA7\xA3\x85\xA7\xA3\x40)

\A means the beginning of the string, \0* skips any number of null bytes
introduced by UTF-16 or UTF-32 encodings, and the \xA7...\x40 is "xtext "
in the common subset of EBCDIC.

-- 
Evolutionary psychology is the theory           John Cowan
that men are nothing but horn-dogs,             http://www.ccil.org/~cowan
and that women only want them for their money.  http://www.reutershealth.com
        --Susan McCarthy (adapted)              jcowan@r...

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