aleczwartcsiroau hi folks anyone enlighten get following search csv end string grepcsvblahcsvvaluetrue 1 blahcsv warning messages 1 unrecognized escape character string 2 unrecognized escape removed csv r reference regular expressions says metacharacter special meaning may quoted preceding backslash metacharacters eres missing something right way match period anyone tell cant find anything r reference im using r 26 windows xp thanks alec zwart cmis csiro aleczwartcsiroau ______________________________________________ rhelprprojectorg mailing list httpsstatethzchmailmanlistinforhelp please read posting guide httpwwwrprojectorgpostingguidehtml provide commented minimal selfcontained reproducible code wed 06 aug 2008 115552 1000 r matching period grep