Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1w36O4-000tuR-17 for pgsql-hackers@arkaria.postgresql.org; Thu, 19 Mar 2026 05:57:40 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.96) (envelope-from ) id 1w36O2-00GfHj-3C for pgsql-hackers@arkaria.postgresql.org; Thu, 19 Mar 2026 05:57:38 +0000 Received: from magus.postgresql.org ([2a02:c0:301:0:ffff::29]) by malur.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1w36O1-00GfHZ-38 for pgsql-hackers@lists.postgresql.org; Thu, 19 Mar 2026 05:57:38 +0000 Received: from fout-a8-smtp.messagingengine.com ([103.168.172.151]) by magus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1w36Ny-000000014Pn-1a3e for pgsql-hackers@lists.postgresql.org; Thu, 19 Mar 2026 05:57:37 +0000 Received: from phl-compute-04.internal (phl-compute-04.internal [10.202.2.44]) by mailfout.phl.internal (Postfix) with ESMTP id 7A88FEC0280; Thu, 19 Mar 2026 01:57:32 -0400 (EDT) Received: from phl-frontend-04 ([10.202.2.163]) by phl-compute-04.internal (MEProxy); Thu, 19 Mar 2026 01:57:32 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=eisentraut.org; h=cc:cc:content-transfer-encoding:content-type:content-type :date:date:from:from:in-reply-to:in-reply-to:message-id :mime-version:references:reply-to:subject:subject:to:to; s=fm3; t=1773899852; x=1773986252; bh=Aq2+kqqd3fcR3oq/fQ/4cnsj/IZxI4bJ HxsGmIDHtlg=; b=ov1oFaViUb7PEFnNcnEUln5U5h4YdIFDt1DEQimrRsvX3fys kea/3skWobkwD8TomUeDx/o+h45YfyEuL92nYoq3NlMKxkas/ny8evS3ZSG50b9p c0h3K73iFXMss4phHEXCS2X+zucD5ZwMjqoE9i6p12aFDnLjqZIij7HgtlylygnH qXyfZgY9uRSs1KZVDCBaUhlmW1XUN2uGdWMsm9lzfTFiCSlDGwmu0+urzkfHDc86 rEXFWzOY+vr5PzWjJnxgzQKiBRBVHRBEPvzWw8bsVWi34M/fyqYoU0rQXcSkPHos RytvFv+R/q94w2vgVSMR4eBAf2Up7Qy4GAEFqA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:content-type:date:date:feedback-id:feedback-id :from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:subject:subject:to:to:x-me-proxy :x-me-sender:x-me-sender:x-sasl-enc; s=fm1; t=1773899852; x= 1773986252; bh=Aq2+kqqd3fcR3oq/fQ/4cnsj/IZxI4bJHxsGmIDHtlg=; b=Z ZE0tCb1RJNuxBtiPswcLuICNIbVNM704BHIMe0FAs/ubokEo/XRVXjAPZllij++n tT0ZHvXm3TY/R05F5lmXOpd/AeRg7Y5O/FCFBbLr235GIllBHxRdWv9J/mFjTYYb 6yJOgY/UwWomE+UGqvg95YZtMq9oHXwFZnO8zpCM99Rb50P85KJGMYsuphz2b3iH uZvQ6z95cBYJBmBo3PVOiyoPPYzoc5aa4cP1umbZkuVKf0zVlQ8n7dIz/zPQWm7N akqQn5yRbT7/xNJDLwhO1vmmIJ+0CrdhdMXZ5gOa3wLoB/3kPsIDmiyravhe0YwL lqKYuUNphl1tRSASz69Yw== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeefgedrtddtgdeftdeivdefucetufdoteggodetrf dotffvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfurfetoffkrfgpnffqhgenuceu rghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmnecujf gurhepkfffgggfuffvvehfhfgjtgfgsehtjeertddtvdejnecuhfhrohhmpefrvghtvghr ucfgihhsvghnthhrrghuthcuoehpvghtvghrsegvihhsvghnthhrrghuthdrohhrgheqne cuggftrfgrthhtvghrnhepgfejtdfhkeeftdeugfeileehteeljeeghfeuledthfeutedv ffdukeefjefhgeehnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmrghilh hfrhhomhepphgvthgvrhesvghishgvnhhtrhgruhhtrdhorhhgpdhnsggprhgtphhtthho pedvpdhmohguvgepshhmthhpohhuthdprhgtphhtthhopegurghnihgvlhesmhgrnhhith houhdqmhgrihhlrdhorhhgpdhrtghpthhtohepphhgshhqlhdqhhgrtghkvghrsheslhhi shhtshdrphhoshhtghhrvghsqhhlrdhorhhg X-ME-Proxy: Feedback-ID: ie0a040ee:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Thu, 19 Mar 2026 01:57:31 -0400 (EDT) Message-ID: Date: Thu, 19 Mar 2026 06:57:29 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: Supporting non-deterministic collations with tailoring rules. To: Daniel Verite Cc: pgsql-hackers@lists.postgresql.org References: Content-Language: en-US From: Peter Eisentraut In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk On 18.03.26 19:21, Daniel Verite wrote: > Peter Eisentraut wrote: > >> Ok, committed. >> >> Thoughts on backpatching? Seems like a straightforward bug fix. > > Thanks for pushing the patch! > I thought it was not a candidate for backpatching because it's > a collation change. > Now, to have a problem with that change in a minor release, > a user would need to have an ICU collation with a rule containing > "[strength N]", where N<>3, even though it was ineffective (so > either the user did not notice or they did but kept it > nonetheless). Users who reported the problem hoped for a backpatch, > but we cannot say there is zero risk with that change in a minor > release. Personally I'm +0. Ok, let's not then.