From patchwork Tue Mar 19 11:23:15 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dirk Gouders X-Patchwork-Id: 13596598 Received: from mx10.gouders.net (mx10.gouders.net [202.61.206.94]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0CFA654FAB for ; Tue, 19 Mar 2024 11:24:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=202.61.206.94 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710847474; cv=none; b=Lp4ItriANmBYWdiufVbWqbgOyFxlHsdjKsf4gwgSPUo7b1WCq5mocUhVDLXp0Vcmg3bp2qr+0tXkjyiP763GNQ0qm8kKODs+zAawNScrQFC3jB4L204Dhwkg0BCFj05n7VZ40BkfBf6y5tnrfrZo2ZWTrPmD/d0vIzYiH1rv8Hw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710847474; c=relaxed/simple; bh=ZvHqG9KyK2fn/PfbiiL0P7HCQkiSTagQKAhyGEx3gV4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Dpf311OvXfly647mjDlEeVUWXoz8wGeIb5ck/odcLC0ic3X0SfAbbEPZG8+DqhEEf/tHseZ1VAOTD3SwGPMrbkCLME+Cu9YOPC7Avf87kmUUydedFQla7ttpZEmDVWuHUgFB1oClEn3mWRDPL5kOIgVJ0KWkvOr0AZhQa+yN1FA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=gouders.net; spf=pass smtp.mailfrom=gouders.net; dkim=pass (1024-bit key) header.d=gouders.net header.i=@gouders.net header.b=X4A/9JfX; arc=none smtp.client-ip=202.61.206.94 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=gouders.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gouders.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=gouders.net header.i=@gouders.net header.b="X4A/9JfX" Received: from localhost ([193.175.198.193]) (authenticated bits=0) by mx10.gouders.net (8.17.1.9/8.17.1.9) with ESMTPSA id 42JBOO52017034 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Tue, 19 Mar 2024 12:24:24 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gouders.net; s=gnet; t=1710847464; bh=ZvHqG9KyK2fn/PfbiiL0P7HCQkiSTagQKAhyGEx3gV4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=X4A/9JfXaaB9i4adRaDr7lwVILcVgt55mXhVUCeBjnvVziCXSMKqQKxKa8TYhzPiP w61YKbjylu+lD/oMjESFYOky5M2G1lE2Pw9Vx29EDeNvFEtJXEWyr5jFdCnyOqkls0 W0xcfmUEz6qVln5sRTOj7VTUCDAEXCBFhEGfosCI= From: Dirk Gouders To: git@vger.kernel.org Cc: Dirk Gouders , Junio C Hamano , Emily Shaffer Subject: [PATCH v2 5/5] MyFirstObjectWalk: add stderr to pipe processing Date: Tue, 19 Mar 2024 12:23:15 +0100 Message-ID: <64c36dbf16108353635a7315a3bd5eb60f2aa92e.1710840596.git.dirk@gouders.net> X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: git@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In the last chapter of this document, pipes are used in commands to filter out the first/last trace messages. But according to git(1), trace messages are sent to stderr if GIT_TRACE is set to '1', so those commands do not produce the described results. Fix this by redirecting stderr to stdout prior to the pipe operator to additionally connect stderr to stdin of the latter command. Signed-off-by: Dirk Gouders --- Documentation/MyFirstObjectWalk.txt | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/Documentation/MyFirstObjectWalk.txt b/Documentation/MyFirstObjectWalk.txt index 981dbf917b..2e6ae4d7fc 100644 --- a/Documentation/MyFirstObjectWalk.txt +++ b/Documentation/MyFirstObjectWalk.txt @@ -847,7 +847,7 @@ those lines without having to recompile. With only that change, run again (but save yourself some scrollback): ---- -$ GIT_TRACE=1 ./bin-wrappers/git walken | head -n 10 +$ GIT_TRACE=1 ./bin-wrappers/git walken 2>&1 | head -n 10 ---- Take a look at the top commit with `git show` and the object ID you printed; it @@ -875,7 +875,7 @@ of the first handful: ---- $ make -$ GIT_TRACE=1 ./bin-wrappers git walken | tail -n 10 +$ GIT_TRACE=1 ./bin-wrappers git walken 2>&1 | tail -n 10 ---- The last commit object given should have the same OID as the one we saw at the