Eskil

            }
            lappend alt [file join [lreplace $parts 0 1 branches $rev]]
            lappend alt [file join [lreplace $parts 0 1 tags $rev]]
        }
    }
    foreach tailAlt $alt {
        set urlAlt $Root/[join $tailAlt /]
        if {[catch {exec svn info $urlAlt} res]} {
        if {[catch {exec svn "info" $urlAlt} res]} {
            continue
        }
        # Is it enough that svn info worked to check success? Seems so
        return $urlAlt
    }
    return
}