On Fri, Sep 19, 2008 at 11:26:23AM -0400, Jeff Johnson wrote:
> Likely the 1st thing to get into place is the ability to trigger from  
> adding
> a file to a directory, i.e. trigger if RPMTAG_DIRNAMES matches a trigger
> pattern, add trailing / to pattern to differentiate a dirname trigger.

Triggers based on DIRNAMES are not enough.  Here is an example:
when e.g. /usr/share/icons/hicolor/32x32/apps/kpdf.png is installed,
upgraded, or removed, "gtk-update-icon-cache /usr/share/icons/hicolor"
must be triggered.