Using 'jcr:contains' with a hyphen and wildcard in the full-text expression doesn't always work

This started out as a StackOverflow question: http://stackoverflow.com/questions/3572258/

When issuing a 'jcr:contains' clause (in either XPath or JCR-SQL2), and this clause contains a hyphen, the query will work under some situations but not others. For example, consider content that contains "4-speed" and "5-speed". A query containing this clause will work successfully:

... jcr:contains(//*,'"5-speed"') ...

Even these query that uses a wildcard does work:

... jcr:contains(//,'"5-sp"') ...

or

... jcr:contains(//,'"-sp*"') ...

However, consider content that contains "Sophie-Anne" and "Sophie-Allen". This query does work:

... jcr:contains(//*,'"sophia-anne"') ...

while any queries that include the hyphen and a wildcard do not work:

... jcr:contains(//*,'"sophia-anne"') ...

or

... jcr:contains(//,'"sophia-a"') ...