portupgrade-devel: problem with -o ?

[Angelo Turetta]

I updated to portupgrade-devel following the instructions about Xorg7.2.

Yesterday I tried the following:

# portupgrade -p -o www/gtkhtml38 gtkhtml3
--->  Upgrading 'gtkhtml3-3.14.1' to 'gtkhtml3-3.14.2' (www/gtkhtml3)
--->  Building '/usr/ports/www/gtkhtml3'

# portversion -v portupgrade\*
portupgrade-devel-2.3.0_5   =  up-to-date with port

The same happened when I tried to switch ghostscript from -gnu to -gpl 
(even in that occasion, the -gnu port had a concurrent PORTREVISION bump).

Is this a portupgrade-devel bug or my system's mis-behavior? Maybe it's 
happening because the implicit update takes precedence over the '-o' switch?

Angelo Turetta