package ifneeded stringprep 1.0.0 [list source [file join $dir stringprep.tcl]]
package ifneeded stringprep::data 1.0.0 [list source [file join $dir stringprep_data.tcl]]
package ifneeded unicode 1.0.0 [list source [file join $dir unicode.tcl]]
package ifneeded unicode::data 1.0.0 [list source [file join $dir unicode_data.tcl]]

