Date: Thu, 6 Jun 2002 14:03:54 +0400 From: "Andrey A. Chernov" <ache@nagual.pp.ru> To: "Tim J. Robbins" <tjr@FreeBSD.org> Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/usr.bin/uniq uniq.c Message-ID: <20020606100352.GA86621@nagual.pp.ru> In-Reply-To: <20020606192402.A45186@treetop.robbins.dropbear.id.au> References: <200206060313.g563DAi26751@freefall.freebsd.org> <20020606031545.GA83612@nagual.pp.ru> <20020606161843.A44561@treetop.robbins.dropbear.id.au> <20020606083246.GA85860@nagual.pp.ru> <20020606192402.A45186@treetop.robbins.dropbear.id.au>
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On Thu, Jun 06, 2002 at 19:24:02 +1000, Tim J. Robbins wrote: > uniq is defined in terms of string equality, not string collatng order. > It doesn't matter how the input is split into collating elements or their > weights, what matters is that the lines have the same bit patterns. The GNU > implementation uses memcmp() to compare lines. Solaris appears to use > strcmp() (objdump -T on /bin/uniq shows no reference to strcoll or strxfrm). > SUSv3 does not mention LC_COLLATE as affecting uniq. NetBSD uses strcmp(). > AT&T AST uses memcmp(). 1) There is no order here, I never mention any order, we talk about equality possibility in collate. Please learn something about collate before commiting anything in that area. 2) I never mention any weights too, see above. 3) There is no much sense to discuss non-localized implementations you mention. 4) Uniq must be consistent with other utilities 'unique' concept to operate in the flow, like comm, join and sort, they _use_ collate, so uniq must not produce different conflicting results. 5) From common sense: in some languages <ss>alala and ssalala are the same. 6) If you are user of such locale and want binary uniq, reset your LANG to C -- Andrey A. Chernov http://ache.pp.ru/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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