Version name issue

[Adam Dershowitz]

I currently have gimp-app gimp-app @2.4.0-rc1_0 installed.
If I do a sync and then port info gimp-app it shows gimp-app 2.4.0.   
But if I do port outdated, this port does not show up as outdated.  I  
would think that 2.4.0-rc1_0 is older then 2.4.0.  But port seems to  
think that it is more current.  Is it just doing a string compare to  
find the which one is newer?
Am I correct about which one is in fact newer?

Thanks,



--Adam