To match 'hello' with 'farmer' the code will be
matches('ehllo', 'a?e?f?m?r?r?' )
Ie 'hello' has been sorted into codepoint order before the match.
One example which shows the match would be :
'frame'
matches ( 'aefmr', 'a?e?f?m?r?r?' )
Helpfully,
Hopefully,
Richard.
-----Original Message-----
From: Andrew Welch [mailto:andrew(_dot_)j(_dot_)welch(_at_)gmail(_dot_)com]
Sent: 22 February 2008 15:24
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: Re: [xsl] comparing sequences that contain more than
one of the same item
On 22/02/2008, Michael Kay <mike(_at_)saxonica(_dot_)com> wrote:
Sort the characters in the long string into code point order
farmer => aefmrr
Turn this into a regular expression in which each
character is optional
a?e?f?m?r?r?
Sort the characters in the short string into code point
order, and test
whether the result matches this regular expression.
I can't see what you're getting at, but I can't convert it into a
working example:
matches('hello', 'a?e?f?m?r?r?')"
returns true, which suggests the regex needs work... but I don't know
regex's well enough to correct it.
--
Andrew Welch
http://andrewjwelch.com
Kernow: http://kernowforsaxon.sf.net/
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