PatternVersionMatcher breaks dynamic revisions

[Nathan Franzen <Na...@mmodal.com>]

I've been experimenting with the version matchers, and after some experiments got a PatternVersionMatcher that was doing the lookups on a particular dependency the way I wanted it too.   Unfortunately, I then saw other dependencies -- which we working before -- now failing. 

Trying to break it down into the simplest test case, I have in my ivy.xml, either
        <dependency org="com.mmodal" name="devTools" rev="[4.0,)" />
or
        <dependency org="com.mmodal" name="devTools" rev="4.0.+" />
which should (and do) give me version 4.0.102


now in ivy settings, I add or remove 
     <version-matchers>
        <pattern-vm/>
     </version-matchers>
which turns off or on the successful lookup.

I glanced at the source of org.apache.ivy.plugins.version.PatternVersionMatcher, but I don't see anything obvious fishy.  I don't know what code is involved in initializing the set of version matchers, so it's hard for me to know where something's gone wrong.

Of course I first used -verbose, but don't see anything helpful in the output.

Nathan