>>>>> Duncan Murdoch >>>>> on Thu, 7 Mar 2024 05:08:40 -0500 writes:
> On 07/03/2024 4:16 a.m., Ivan Krylov wrote: >> On Wed, 6 Mar 2024 13:46:55 -0500 Duncan Murdoch >> <murdoch.dun...@gmail.com> wrote: >> >>> is this just a more or less harmless error, thinking >>> that the dot needs escaping >> >> I think it's this one. You are absolutely right that the >> dot doesn't need escaping in either TRE (which is what's >> used inside exportPattern) or PCRE. In PRCE, this regular >> expression would have worked as intended: >> >> # We do match backslashes by mistake. grepl('[\\.]', >> '\\') # [1] TRUE >> >> # In PCRE, this wouldn't have been a mistake. >> grepl('[\\.]', c('\\', '.'), perl = TRUE) # [1] FALSE >> TRUE >> > Thanks, I didn't realize that escaping in PCRE was > optional. > So the default exportPattern line could be > exportPattern("^[^.]") > and it would work even if things were changed so that PCRE > was used instead of TRE. > Duncan Murdoch Yes, thank you, Duncan! .. I had started changing to this much easier pattern already before reading on ... --> in R-devel; now also with "doc"s (NEWS.Rd, R-exts.texi) Martin ______________________________________________ R-package-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-package-devel