slaven rezic tqcsubrezicde id like remind theres still regression matching utf8flagged string byteflagged pattern following script works fine 588 shows couple oks 5100 oks seem common uppercase characters probably folded lowercase equivalent mu also list probably also kind folded equivalent usrbinperl w use strict chr 160 255 chr_byte chrchr chr_utf8 chrchr utf8upgradechr_utf8 rx qrchr_bytexi print chr chr_utf8 rx ok ok n __end__ regards slaven slaven rezic slaven rezic de bbbike route planner cyclists berlin www version httpwwwbbbikede perltk version unix windows httpbbbikesourceforgenet fri 08 aug 2008 063554 0100 another regexp failure utf8flagged string byteflagged pattern reminder