I can add a
findAllResourcesRelative() 
function to KStdDirs which returns a list of unique relative paths

With a tree like

$HOME/.kde/share/foo/bar/file1.txt
$KDEDIR/share/foo/bar/file1.txt
$KDEDIR/share/foo/bar/file2.txt
$KDEDIR/share/foo/bor/file1.txt

Assume that "foobar" points to ".../share/foo".

Currently (at least last week) findAllResources("foobar", "bar/*") returns
 $HOME/.kde/share/foo/bar/file1.txt
 $KDEDIR/share/foo/bar/file1.txt
 $KDEDIR/share/foo/bar/file2.txt

findAllResourcesRelative("foobar", "bar/*") should return in this case:
 bar/file1.txt
 bar/file2.txt

You can then use locateLocal("foobar", relativeFile) to get the full path.

The disadvantage is that we do a stat() to much for each file in this case...

An other option would be to have:

findAllResourcesRelative("foobar", "bar/*") which returns:
 { bar/file1.txt, $HOME/.kde/share/foo/bar/file1.txt }
 { bar/file2.txt, $KDEDIR/share/foo/bar/file2.txt }

E.g. both the relative as well as the absolute path. You don't have to
do a locateLocal() any more then.

Cheers,
Waldo
-- 
The "gui" in "Penguin" is pronounced "K-D-E"