From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Fri, 23 Jan 2026 09:26:13 +0100 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vjCUg-004Q4b-0U for lore@lore.pengutronix.de; Fri, 23 Jan 2026 09:26:13 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1vjCUf-00044W-62 for lore@pengutronix.de; Fri, 23 Jan 2026 09:26:13 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:MIME-Version:Date:Message-Id:Subject:References:In-Reply-To:Cc: To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=ovA1mhPx1QNDLO6uxuMchraJftOXTIr8fMg6WutmfNM=; b=x3c6vvV6zfmwxtGkcfxnsE5ZGo 4/AF+zVqj2A1TwR3XUAcJezeWPIlk+EuhXMOYapddM8PEb2VXqgwcFTLgBOWVCIocNa+Wqh4JKBdm utiYiyJUv8YDGU1tj8y+PIAANIsudWaaN9Czn4oa3EHq68ShDx4w1FFGroyxsgOTUBqo/yOBoIwlb eG1hK2JwKxIEiNHdzSSJRRnQyw6ufb7NieV7RDRRHMibFWn9JrpkzEU9Oj08XctKLPcxrHs3eOYMC iNYOgbKJvpdc/OnD6nsptkVVvdl1X8Q7ONeW6KH/9rQ5gS32otuenHD5+Dhz4orodcS0/0WtCFGIN DCQQ4Now==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vjCUD-00000008ShC-1ZAa; Fri, 23 Jan 2026 08:25:45 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vjCUB-00000008SfO-1SyH for barebox@lists.infradead.org; Fri, 23 Jan 2026 08:25:44 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1vjCU9-0003pg-IR; Fri, 23 Jan 2026 09:25:41 +0100 Received: from dude02.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::28]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1vjCUA-0023sH-0A; Fri, 23 Jan 2026 09:25:41 +0100 Received: from localhost ([::1] helo=dude02.red.stw.pengutronix.de) by dude02.red.stw.pengutronix.de with esmtp (Exim 4.98.2) (envelope-from ) id 1vjCU9-0000000GG5V-1LsD; Fri, 23 Jan 2026 09:25:41 +0100 From: Sascha Hauer To: barebox@lists.infradead.org, Ahmad Fatoum Cc: Ahmad Fatoum In-Reply-To: <20260120122732.634300-1-a.fatoum@pengutronix.de> References: <20260120122732.634300-1-a.fatoum@pengutronix.de> Message-Id: <176915674131.3874916.15254571518244891927.b4-ty@pengutronix.de> Date: Fri, 23 Jan 2026 09:25:41 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailer: b4 0.14.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260123_002543_389043_5430D0C2 X-CRM114-Status: UNSURE ( 8.72 ) X-CRM114-Notice: Please train this message. X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-4.0 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: Re: [PATCH] commands: test: add support for [[ -v var_to_check_existence ]] X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) On Tue, 20 Jan 2026 13:27:20 +0100, Ahmad Fatoum wrote: > We currently have no way to differentiate between a variable that's set > and one that's empty, but this would be useful for scripts that source > other scripts for customization and want to verify if some variables > have been explicitly set to be empty or not, e.g. an initrd override > that's empty would mean to omit the initrd as opposed to not setting it, > which means to attempt no override. > > [...] Applied, thanks! [1/1] commands: test: add support for [ -v var_to_check_existence ] https://git.pengutronix.de/cgit/barebox/commit/?id=516400780338 (link may not be stable) Best regards, -- Sascha Hauer