https://stackoverflow.com/questions/3796436/whats-the-technical-reason-for-lookbehind-assertion-must-be-fixed-length-in-r
On Tue, May 27, 2025, 4:07 PM Josiah Parry <josiah.pa...@gmail.com> wrote: > Hi all, > > I've encountered an issue where using `perl = TRUE` for regular expressions > with grepl() causes an error on ubuntu CI runners only. > > Is this a known limitation of perl = TRUE for grep and family in base R? Or > is there a suggested workaround? > > The issue is specifically with lookbehinds: > > PCRE pattern compilation error > 'lookbehind assertion is not fixed length' > at '(?<=(FeatureServer|MapServer)/)[0-9]+/?$' > > Any guidance would be very much appreciated! I'd like to avoid adding a > stringi dependency if possible. > > [[alternative HTML version deleted]] > > ______________________________________________ > R-package-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-package-devel > [[alternative HTML version deleted]] ______________________________________________ R-package-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-package-devel
