On Fri, 11 Jun 2004, Martin Maechler wrote:
> >>>>> "Roger" == Roger D Peng <[EMAIL PROTECTED]>
> >>>>> on Fri, 11 Jun 2004 10:43:57 -0400 writes:
>
> Roger> I've noticed a change in the way grep() behaves between the 1.9.0
> Roger> release and a recent R-patched. On 1.9.0 I get the following output:
>
> >> x <- dget(file = url("http://www.biostat.jhsph.edu/~rpeng/names.R";))
> >> length(grep("^l\\w+tmean", x, perl = TRUE, value = TRUE))
> Roger> [1] 84
>
> Roger> And on R-patched (2004-06-11) I get
>
> >> x <- dget(file = url("http://www.biostat.jhsph.edu/~rpeng/names.R";))
> >> length(grep("^l\\w+tmean", x, perl = TRUE, value = TRUE))
> Roger> [1] 13
>
> I can reproduce this exactly.
Are you using a clean build of the current sources?
> <....>
>
> Roger> I didn't find anything in the NEWs file that would indicate a change
>
> yes: The src/extras/pcre/ (Perl Compatible Regular Expressions)
> library was upgraded, and since we assumed that wouldn't
> have any effect --- as we now see, a too optimistically ---
> it wasn't documented in NEWS
Eh? It was upgraded before 1.9.0, and it is documented there as
INSTALLATION CHANGES
o The defaults for configure are now --without-zlib
--without-bzlib --without-pcre.
The included PCRE sources have been updated to version 4.5 and
PCRE >= 4.0 is now required if --with-pcre is used.
The files date from 2004 Jan 11.
--
Brian D. Ripley, [EMAIL PROTECTED]
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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