replace() problem

> hi Jim,
>
>> The spec <http://www.w3.org/TR/xquery-operators/#func-replace>  
>> leads me to
>> believe the following example should print "test --", but it  
>> instead prints
>> "test -bogon-".
>> <xxforms:variable name="test" select="replace('bogon',
>> '.*/(asserted|inferred)/([^/]+)/.*', '$1')" /> <xforms:output
>> value="concat('test -', $test, '-')" />
>> Can anyone explain this behavior? Is it a bug?
>
> "The function returns the xs:string that is obtained by replacing each
> non-overlapping substring of $input that matches the given $pattern  
> with an
> occurrence of the $replacement string."
>
> In your case, the function returns the input string without a  
> replace, because
> the pattern doesn't match the input string. So, for every substring  
> of bogon,
> the replacement is empty.
>
>> Also, how can I cause a single or double quote to print "bogon" or  
>> 'bogon'
>> rather than -bogon-? I've tried escaping with a backslash, but it  
>> doesn't
>> work.
>
> That's true, \" or \' isn't a valid single character escape. You  
> could try to use a category esacape / block escape [1] or a  
> character reference [2].
>
> HTH
> florian
>
> [1] http://www.w3.org/TR/xmlschema-2/#regexs
> [2] http://www.w3.org/TR/2000/WD-xml-2e-20000814#dt-charref
>
>
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> hi Jim,
>
>> The spec <http://www.w3.org/TR/xquery-operators/#func-replace> leads
>> me to
>> believe the following example should print "test --", but it instead
>> prints
>> "test -bogon-".
>>
>> <xxforms:variable name="test" select="replace('bogon',
>> '.*/(asserted|inferred)/([^/]+)/.*', '$1')" /> <xforms:output
>> value="concat('test -', $test, '-')" />
>>
>> Can anyone explain this behavior? Is it a bug?
>
> "The function returns the xs:string that is obtained by replacing each
> non-overlapping substring of $input that matches the given $pattern
> with an
> occurrence of the $replacement string."
>
> In your case, the function returns the input string without a replace,
> because
> the pattern doesn't match the input string. So, for every substring of
> bogon,
> the replacement is empty.