X-Recipient: archive-cygwin AT delorie DOT com X-SWARE-Spam-Status: No, hits=-3.5 required=5.0 tests=AWL,BAYES_05,KHOP_THREADED,RP_MATCHES_RCVD,TW_YG X-Spam-Check-By: sourceware.org Message-ID: <5078A002.8070407@etr-usa.com> Date: Fri, 12 Oct 2012 16:56:02 -0600 From: Warren Young User-Agent: Mozilla/5.0 (Windows NT 6.0; WOW64; rv:15.0) Gecko/20120907 Thunderbird/15.0.1 MIME-Version: 1.0 To: Cygwin-L Subject: Re: R 2.15.1-1 sub() function produces unexpected output References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-IsSubscribed: yes Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com On 10/12/2012 9:18 AM, Toby Johnson wrote: > > The sub() function in R 2.15.1-1 produces unexpected output. Here is > a minimal piece of R code: I see the same result here, except that I tested with R 2.15.1 in both Windows native and Cygwin versions, as opposed to your test which used a different version on Linux. That means we can rule out a 2.14 -> 2.15 difference and the OS difference. I believe sub() is using PCRE for this, per http://goo.gl/XxDyB I ldd'd the Cygwin R binary[*] and it's linking to cygpcre-1.dll, which is PCRE 8.31 if your Cygwin is up to date. Since the PCRE packaged with the R sources is 8.30 (per http://goo.gl/O2UMk) you would think this is fine. If anything, this setup should result in *fewer* bugs, not more. That said, I don't see any better idea than trying to rebuild Cygwin R with different regex libraries. If I were to go about it, I'd first try building R with the packaged PCRE instead of the platform PCRE, then if that gave the same result, build without PCRE entirely. [*] You'd guess "ldd `which R`" but you'd be wrong. The binary is hidden behind two layers of indirection: ldd /usr/lib/R/bin/exec/R.exe -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple