Hi, Have I found a bug in R? Or misunderstood something about grep() ?
Case 1 gives the expected output Case 2 does not gives the expected output. I expected integer(0) also for this case. case 1: grep("[:digit:]", "**ABAAbabaabackabaloneaban") integer(0) case 2: grep("[:digit:]", "**ABAAbabaabackabaloneaband") [1] 1 Regards Martin ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.