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Re: [xsl] comparing sequences that contain more than one of the same item

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Andrew Welch wrote:

On 22/02/2008, Michael Kay <mike@xxxxxxxxxxxx> 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.

Add a caret and a dollar to mark the beginning and end of the string, otherwise it's allowed to match a zero length substring

matches('ehllo', '^a?e?f?m?r?r?$')

# r

--
Ronan Klyne
Business Collaborator Developer
Tel: +44 01189 028518
ronan.klyne@xxxxxxxxxxx
www.groupbc.com

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