Eskil

        tk_messageBox -icon error -title "Cleartool error" -message $msg
        return
    }
}

# Figure out ClearCase revision from arguments
proc ParseCtRevs {filename stream rev} {
    # A negative version number is offset from latest.
    set offset 0
    set tail [file tail $rev]
    if {[string is integer -strict $tail] && $tail < 0} {
        set offset $tail
        set rev [file dirname $rev]
    }
    # If the argument is of the form "name/rev", look for a fitting one
    if {![string is digit $rev] && [regexp {^[^/.]+(/\d+)?$} $rev]} {
    if {![string is integer $rev] && [regexp {^[^/.]+(/\d+)?$} $rev]} {
        if {[catch {exec cleartool lshistory -short $filename} allrevs]} {#
            tk_messageBox -icon error -title "Cleartool error" \
                    -message $allrevs
            return
        }
        set allrevs [split $allrevs \n]

        }
        set apa [lsearch -regexp -all -inline $allrevs "$rev/\\d+\$"]
        set apa [lindex [lsort -dictionary $apa] end]
        if {$apa ne ""} {
            set rev [lindex [split $apa "@"] end]
        }
    }
    set tail [file tail $rev]
    if {[string is integer -strict $tail] && $offset < 0} {
        set path [file dirname $rev]
        set tail [expr {$tail + $offset}]
        if {$tail < 0} {set tail 0}
        set rev [file join $path $tail]
    }
        
    return $rev
}

# Get the last two elements in a file path
proc GetLastTwoPath {path} {
    set last [file tail $path]
    set penultimate [file tail [file dirname $path]]