From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 02DF1C433FE for ; Fri, 10 Dec 2021 03:56:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236566AbhLJEAA (ORCPT ); Thu, 9 Dec 2021 23:00:00 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52536 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236540AbhLJD74 (ORCPT ); Thu, 9 Dec 2021 22:59:56 -0500 Received: from mail-wr1-x42a.google.com (mail-wr1-x42a.google.com [IPv6:2a00:1450:4864:20::42a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D5018C0617A2 for ; Thu, 9 Dec 2021 19:56:21 -0800 (PST) Received: by mail-wr1-x42a.google.com with SMTP id d24so13029151wra.0 for ; Thu, 09 Dec 2021 19:56:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=message-id:in-reply-to:references:from:date:subject:fcc :content-transfer-encoding:mime-version:to:cc; bh=q5HqGPHeqeZqnPsaVWCJV75wuALZkkRWQldk1Um9X34=; b=iQGLUy4erK3oPUwgRc0sLHJA02SnFcR4gsdgziB+X6Tm16CqBwPLDabEiZ2C4v0r6p RTjOie6KSPU6JZwBaMQEK/bwEOvwh6sRq1n2iZipmS2N8bNUp6sY1C4jwiM8+IBAitNf 6j2rRmBWaCj0rHr1OHX2xJIIMiJ3RLihe1ZfGbS0uOOOx6yzq2S6ushOBQlPnPQpWU6R Fx0b5fwbU95ROijKJztmIFlyrppL1tfIUmxQVjTxKFzSiw4RBziUJXVRmOkN+XW1O/zQ a2vxoAZd73wFwIOsQxuTZwMdUdntrfIghUA+aGam4BIx82ftCEb0iOeNvtnzRhFGk7gJ TdBA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:in-reply-to:references:from:date :subject:fcc:content-transfer-encoding:mime-version:to:cc; bh=q5HqGPHeqeZqnPsaVWCJV75wuALZkkRWQldk1Um9X34=; b=2WSE5ZrzsCcjpno8Y5UqJu4IsQNQclOTaU4CA9ndb+S5IRZnss6SbYjtzKSkli33ed 42Uf6nEVFhFSssat1Phah5/BReukiFlsGqBL3uoJkufG9RXODI+ZIlOdwqOSBEzZIixe /a8mU5rIzQEp+rh/KJGa2ScKixxgID5NsX4Ka6Pg+Xdh/TBu3YiJjBCHJ+CYiqvQ3i+/ LwU205ZwEvLqIxTaTkdZDPM3OvDesDvs3CXTHWfexhW3xiGgaX/OwEtk/I3L+Ei4bQWs B0XEXinl2GAIR/GPDqzbqt1xGawcHM3Soq4Iu148l5ox5DcIcYWeR3ge+bmia+MdFww6 pz9w== X-Gm-Message-State: AOAM531qJZWhZ3OyoG2+rXLxjTcFl1Gv0MCsn/aWkBJ2U01mBPWnVHzV XyDrHSEY4rCWW+Ebw7zLdRUu9NHTjVs= X-Google-Smtp-Source: ABdhPJxsWuDkNh1yDFPtJKvAhpFDerL7ZPZJavRzhClsFxcBNqT0zZA7gPndXfTntz7xIezv9pac8Q== X-Received: by 2002:adf:ecce:: with SMTP id s14mr10552841wro.98.1639108580214; Thu, 09 Dec 2021 19:56:20 -0800 (PST) Received: from [127.0.0.1] ([13.74.141.28]) by smtp.gmail.com with ESMTPSA id r83sm10820261wma.22.2021.12.09.19.56.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Dec 2021 19:56:19 -0800 (PST) Message-Id: <7483d1363e5ba4a4c15c22e18004498ad5fc18cd.1639108573.git.gitgitgadget@gmail.com> In-Reply-To: References: From: "Elijah Newren via GitGitGadget" Date: Fri, 10 Dec 2021 03:56:11 +0000 Subject: [PATCH v3 08/10] git-sparse-checkout.txt: update to document init/set/reapply changes Fcc: Sent Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit MIME-Version: 1.0 To: git@vger.kernel.org Cc: Derrick Stolee , Lessley Dennington , Victoria Dye , Elijah Newren , Elijah Newren , Elijah Newren Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org From: Elijah Newren As noted in the previous commit, using separate `init` and `set` steps with sparse-checkout result in a number of issues. The previous commits made `set` able to handle the work of both commands, and enabled reapply to tweak the {cone,sparse-index} settings. Update the documentation to reflect this, and mark `init` as deprecated. Reviewed-by: Derrick Stolee Reviewed-by: Victoria Dye Signed-off-by: Elijah Newren --- Documentation/git-sparse-checkout.txt | 98 +++++++++++++++------------ 1 file changed, 55 insertions(+), 43 deletions(-) diff --git a/Documentation/git-sparse-checkout.txt b/Documentation/git-sparse-checkout.txt index 42056ee9ff9..72fcb6b2acc 100644 --- a/Documentation/git-sparse-checkout.txt +++ b/Documentation/git-sparse-checkout.txt @@ -30,28 +30,36 @@ COMMANDS 'list':: Describe the patterns in the sparse-checkout file. -'init':: - Enable the `core.sparseCheckout` setting. If the - sparse-checkout file does not exist, then populate it with - patterns that match every file in the root directory and - no other directories, then will remove all directories tracked - by Git. Add patterns to the sparse-checkout file to - repopulate the working directory. +'set':: + Enable the necessary config settings + (extensions.worktreeConfig, core.sparseCheckout, + core.sparseCheckoutCone) if they are not already enabled, and + write a set of patterns to the sparse-checkout file from the + list of arguments following the 'set' subcommand. Update the + working directory to match the new patterns. + -To avoid interfering with other worktrees, it first enables the -`extensions.worktreeConfig` setting and makes sure to set the -`core.sparseCheckout` setting in the worktree-specific config file. +When the `--stdin` option is provided, the patterns are read from +standard in as a newline-delimited list instead of from the arguments. + -When `--cone` is provided, the `core.sparseCheckoutCone` setting is -also set, allowing for better performance with a limited set of -patterns (see 'CONE PATTERN SET' below). +When `--cone` is passed or `core.sparseCheckoutCone` is enabled, the +input list is considered a list of directories instead of +sparse-checkout patterns. This allows for better performance with a +limited set of patterns (see 'CONE PATTERN SET' below). Note that the +set command will write patterns to the sparse-checkout file to include +all files contained in those directories (recursively) as well as +files that are siblings of ancestor directories. The input format +matches the output of `git ls-tree --name-only`. This includes +interpreting pathnames that begin with a double quote (") as C-style +quoted strings. This may become the default in the future; --no-cone +can be passed to request non-cone mode. + -Use the `--[no-]sparse-index` option to toggle the use of the sparse -index format. This reduces the size of the index to be more closely -aligned with your sparse-checkout definition. This can have significant -performance advantages for commands such as `git status` or `git add`. -This feature is still experimental. Some commands might be slower with -a sparse index until they are properly integrated with the feature. +Use the `--[no-]sparse-index` option to use a sparse index (the +default is to not use it). A sparse index reduces the size of the +index to be more closely aligned with your sparse-checkout +definition. This can have significant performance advantages for +commands such as `git status` or `git add`. This feature is still +experimental. Some commands might be slower with a sparse index until +they are properly integrated with the feature. + **WARNING:** Using a sparse index requires modifying the index in a way that is not completely understood by external tools. If you have trouble @@ -60,23 +68,6 @@ to rewrite your index to not be sparse. Older versions of Git will not understand the sparse directory entries index extension and may fail to interact with your repository until it is disabled. -'set':: - Write a set of patterns to the sparse-checkout file, as given as - a list of arguments following the 'set' subcommand. Update the - working directory to match the new patterns. Enable the - core.sparseCheckout config setting if it is not already enabled. -+ -When the `--stdin` option is provided, the patterns are read from -standard in as a newline-delimited list instead of from the arguments. -+ -When `core.sparseCheckoutCone` is enabled, the input list is considered a -list of directories instead of sparse-checkout patterns. The command writes -patterns to the sparse-checkout file to include all files contained in those -directories (recursively) as well as files that are siblings of ancestor -directories. The input format matches the output of `git ls-tree --name-only`. -This includes interpreting pathnames that begin with a double quote (") as -C-style quoted strings. - 'add':: Update the sparse-checkout file to include additional patterns. By default, these patterns are read from the command-line arguments, @@ -93,12 +84,35 @@ C-style quoted strings. cases, it can make sense to run `git sparse-checkout reapply` later after cleaning up affected paths (e.g. resolving conflicts, undoing or committing changes, etc.). ++ +The `reapply` command can also take `--[no-]cone` and `--[no-]sparse-index` +flags, with the same meaning as the flags from the `set` command, in order +to change which sparsity mode you are using without needing to also respecify +all sparsity paths. 'disable':: Disable the `core.sparseCheckout` config setting, and restore the - working directory to include all files. Leaves the sparse-checkout - file intact so a later 'git sparse-checkout init' command may - return the working directory to the same state. + working directory to include all files. + +'init':: + Deprecated command that behaves like `set` with no specified paths. + May be removed in the future. ++ +Historically, `set` did not handle all the necessary config settings, +which meant that both `init` and `set` had to be called. Invoking +both meant the `init` step would first remove nearly all tracked files +(and in cone mode, ignored files too), then the `set` step would add +many of the tracked files (but not ignored files) back. In addition +to the lost files, the performance and UI of this combination was +poor. ++ +Also, historically, `init` would not actually initialize the +sparse-checkout file if it already existed. This meant it was +possible to return to a sparse-checkout without remembering which +paths to pass to a subsequent 'set' or 'add' command. However, +`--cone` and `--sparse-index` options would not be remembered across +the disable command, so the easy restore of calling a plain `init` +decreased in utility. SPARSE CHECKOUT --------------- @@ -117,10 +131,8 @@ directory, it updates the skip-worktree bits in the index based on this file. The files matching the patterns in the file will appear in the working directory, and the rest will not. -To enable the sparse-checkout feature, run `git sparse-checkout init` to -initialize a simple sparse-checkout file and enable the `core.sparseCheckout` -config setting. Then, run `git sparse-checkout set` to modify the patterns in -the sparse-checkout file. +To enable the sparse-checkout feature, run `git sparse-checkout set` to +set the patterns you want to use. To repopulate the working directory with all files, use the `git sparse-checkout disable` command. -- gitgitgadget