OCCT

puts "TODO OCC23497 ALL: exception"

puts "============"
puts "0023497: Units package raises e x c e p t i o n for composite units"
puts "============"
puts ""

set UnitString "sq.km"

if [catch {unitconvtoSI 1 ${UnitString}} res] {
  puts "Error: Units package raises exception for composite units"
} else {
  puts "OK: Units package work good for composite unit"
}