Eskil

            $w.bl configure -state disabled
        }
    }

    # Compare two directories.
    method CompareDirs {dir1 dir2 node} {
        # Collect preferences to a dict.
        # FIXA: Maybe move this to a more cnetral place
        dict set prefsD incdirs $::Pref(dir,incdirs)
        dict set prefsD exdirs $::Pref(dir,exdirs)
        dict set prefsD incfiles $::Pref(dir,incfiles)
        dict set prefsD exfiles $::Pref(dir,exfiles)

        if {$dir1 eq ""} {
            set filesD1 {}

        set p1 0
        set p2 0
        set status_change 0
        set status_unknown 0
        while 1 {
            if {$p1 < $len1 && $p2 < $len2} {
                set fD1 [lindex $filesD1 $p1]
                set fD2 [lindex $filesD2 $p1]
                set apa [FStrCmp [dict get $fD1 tail] [dict get $fD1 tail]]
                if {$apa == 0} {
                    # Equal names, separate them if not the same type
                    set apa [expr {- [dict get $fD1 dir] \
                                   + [dict get $fD2 dir]}]
                }

                switch -- $apa {

                }
            } elseif {$p1 < $len1 && $p2 >= $len2} {
                set fD1 [lindex $filesD1 $p1]
                $self ListFiles $fD1 "" $node
                incr p1
                set status_change 1
            } elseif {$p1 >= $len1 && $p2 < $len2} {
                set fD2 [lindex $filesD2 $p1]
                $self ListFiles "" $fD2 $node
                incr p2
                set status_change 1
            } else {
                break
            }
        }