Implemented in my tree:
commit d015a76523bc9db465bf341d48182f503c09ebdc
Author: Behdad Esfahbod <behdad@behdad.org>
Date:   Wed Aug 13 02:24:42 2008 -0400

    Implement fc-list --verbose (#13015)
    
    A private FcObjectGetSet() is implemented that provides an
    FcObjectSet of all registered elements.  FcFontSetList() is
    then modified to use the object set from FcObjectGetSet() if
    provided object-set is NULL.
    
    Alternatively FcObjectGetSet() can be made public.  In that
    case fc-list can use that as a base if --verbose is included,
    and also add any elements provided by the user (though that has
    no effect, as all elements from the cache are already registered).
    Currently fc-list ignores user-provided elements if --verbose
    is specified.



Any preference about FcObjectGetSet() being private or public Keith?
Here's the code for that function:

+FcObjectSet *
+FcObjectGetSet (void)
+{
+    int                i;
+    FcObjectSet        *os = NULL;
+
+
+    os = FcObjectSetCreate ();
+    for (i = 0; i < FcObjectsNumber; i++)
+       FcObjectSetAdd (os, FcObjects[i].object);
+
+    return os;
+}

I believe I've fixed this in 2.7.0.  Please reopen otherwise.