Thank you! Joh
Gabor Grothendieck wrote: > Have just made an improvement to the development > version to ignore escaped left parens in the regexp > in setting the backref default. This improvement > should address your problem so that this now > works without errors: > > library(gsubfn) > # overwrite relevant function with devel version of it > source("http://gsubfn.googlecode.com/svn/trunk/R/gsubfn.R") > > strapply("S(AC,P)TVDK(8)EELVQK(8)", ".[(].{1,2}[)]|.")[[1]] > > On Tue, Oct 28, 2008 at 8:53 AM, Gabor Grothendieck > <[EMAIL PROTECTED]> wrote: >> The default has changed to be the negative of its prior >> value so that would account for it. The current >> default is backref = -k where k is the number of left parens in >> the regexp. That means that it passes only the >> back references (and not the match) if it thinks there >> are any backreferences. Usually this revised default >> is what is wanted but the unusual aspect of this example >> is that the parens don't represent back references >> and the "wrong" default happened to work anyways. >> >> I guess the bottom line is that if you use parens in >> your regexp that are not intended to be back references >> then its important to specify backref= explicitly. >> >> The NEWS file in the gsubfn distribution does mention >> the change. >> >> On Tue, Oct 28, 2008 at 8:32 AM, Johannes Graumann >> <[EMAIL PROTECTED]> wrote: >>> -----BEGIN PGP SIGNED MESSAGE----- >>> Hash: SHA512 >>> >>> Thanks for looking at this. The "\"" was an oversight for the example, >>> but the "backref" bit solves my problem ... I wonder whether that used >>> to be the default and was recently changed? >>> >>> Thanks for your help! >>> >>> Joh >>> >>> Gabor Grothendieck wrote: >>> >>>> There is no quote terminating the first argument and you >>>> need to add the backref = 0 argument so that it does >>>> not interpret the parentheses in the regular expression >>>> as back references. >>>> >>>> Its not clear to me what the intention is here so there >>>> may be further changes needed but the ones above >>>> result in no error message. >>>> >>>> On Tue, Oct 28, 2008 at 7:39 AM, Johannes Graumann >>>> <[EMAIL PROTECTED]> wrote: >>>>> Hi all, >>>>> >>>>> I swear this used to work: >>>>> >>>>> library(gsubfn) >>>>> strapply("S(AC,P)TVDK(8)EELVQK(8), ".[(].{1,2}[)]|.")[[1]] >>>>> >>>>> But somewhere along the update path it stopped ... now giving me this >>>>> >>>>> Error in base::gsub(pattern, rs, x, ...) : >>>>> invalid backreference 2 in regular expression >>>>> >>>>> Can't figure it out. What am I doing wrong? >>>>> >>>>> Thanks for any hints, Joh >>>>> >>>>> ______________________________________________ >>>>> R-help@r-project.org mailing list >>>>> 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. >>>>> >>>> >>>> ______________________________________________ >>>> R-help@r-project.org mailing list >>>> 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. >>> -----BEGIN PGP SIGNATURE----- >>> Version: GnuPG v1.4.9 (GNU/Linux) >>> >>> iQIcBAEBCgAGBQJJBwZjAAoJEK3uDRxoATjEb9gP/ioWCERhZrLAaeIPMc1PSmVV >>> nsWojOneSNruSESMgmocrKkOYbkPVZmmBetK9gw4sw9hLErGjy1MsebHVr40pNK2 >>> Bajm7mXJ1wbd7EDlvRfS3KpBkPvPlUmSMlp2fMoYaswcyt6Rokr3S512UlkvlLWU >>> QNd8NMx4iRFPn3dA84SW1SqWaKIXtpTME35k1VQw0dGvv8iTgsY6pAHWkEoezuue >>> g/tGY8kc2WjBpvVjSVDD4uAuzO9T502n1AjsUs+/bxVRBPIJJktFzkOJbhKQabuJ >>> 2NfEX45B4Y/f1nMff5KQ1IS4LQUUzNwzvEuwHuw2CXfKnzopNUUjU3rcCaHwOIJz >>> yecnRXpGwVX+dHaLH156voiHJqpsz7tUoIUOvAQumfwmPajK9Z/KKwLoXdXQ22gB >>> 5469gcVBI+z31euijZMRMW12M7ZidABnHd2afxrwQRZyU9sexemzVzSdAlIpIgr5 >>> JG62rxpFY2ImmzTDncZpNik68cviB1ZLloH4twJxFk/T7DmS3x17wVofPb1yOZDq >>> TYCvRcGIihhZ3fZM/m2qExv+bkCS80CnY1qMY+o8BmTDcp6hH64UpCQz17o/8JG9 >>> Fo8jjLRghuh1DBThL6zrzg+70UTqhNWXdBSLs/UPB1W8i1Xk+PTIFLWGigq1+3ty >>> KoHmwgt/Bd27e2XO+leu >>> =JlLi >>> -----END PGP SIGNATURE----- >>> >>> ______________________________________________ >>> R-help@r-project.org mailing list >>> 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. >>> >> > > ______________________________________________ > R-help@r-project.org mailing list > 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. ______________________________________________ R-help@r-project.org mailing list 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.