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 4.94.2) (envelope-from ) id 1vGKyi-00Cr30-8q for pgsql-committers@arkaria.postgresql.org; Tue, 04 Nov 2025 17:37:55 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.94.2) (envelope-from ) id 1vGKyh-00FVwI-6B for pgsql-committers@arkaria.postgresql.org; Tue, 04 Nov 2025 17:37:54 +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 4.94.2) (envelope-from ) id 1vGKyg-00FVwA-Uq for pgsql-committers@lists.postgresql.org; Tue, 04 Nov 2025 17:37:53 +0000 Received: from mahout.postgresql.org ([2001:4800:3e1:1::227]) by magus.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vGKyd-005y7g-1i for pgsql-committers@lists.postgresql.org; Tue, 04 Nov 2025 17:37:53 +0000 Received: from gemulon.postgresql.org ([2001:4800:3e1:1::198]) by mahout.postgresql.org with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1vGKyd-009rkD-6i for pgsql-committers@lists.postgresql.org; Tue, 04 Nov 2025 17:37:49 +0000 Received: from localhost ([127.0.0.1] helo=gemulon.postgresql.org) by gemulon.postgresql.org with esmtp (Exim 4.96) (envelope-from ) id 1vGKyb-0051TF-0t for pgsql-committers@lists.postgresql.org; Tue, 04 Nov 2025 17:37:49 +0000 Content-Type: multipart/mixed; boundary="===============6446625473975581364==" MIME-Version: 1.0 From: Tom Lane To: pgsql-committers@lists.postgresql.org Subject: pgsql: Allow "SET list_guc TO NULL" to specify setting the GUC to empty X-Auto-Response-Suppress: All Auto-Submitted: auto-generated Message-Id: Date: Tue, 04 Nov 2025 17:37:49 +0000 List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Archived-At: Precedence: bulk --===============6446625473975581364== Content-Type: text/plain; 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