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618244e160
The current update_linked_gitdir() has a bug that can create "gitdir" file in non-multi-worktree setup. Worse, sometimes it can write relative path to "gitdir" file, which will not work (e.g. "git worktree list" will display the worktree's location incorrectly) Instead of fixing this, we step back a bit. The original design was probably not well thought out. For now, if the user manually moves a worktree, they have to fix up "gitdir" file manually or the worktree will get pruned. Helped-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
228 lines
8.3 KiB
Text
228 lines
8.3 KiB
Text
git-worktree(1)
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===============
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NAME
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----
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git-worktree - Manage multiple working trees
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SYNOPSIS
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--------
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[verse]
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'git worktree add' [-f] [--detach] [-b <new-branch>] <path> [<branch>]
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'git worktree prune' [-n] [-v] [--expire <expire>]
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'git worktree list' [--porcelain]
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DESCRIPTION
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-----------
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Manage multiple working trees attached to the same repository.
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A git repository can support multiple working trees, allowing you to check
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out more than one branch at a time. With `git worktree add` a new working
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tree is associated with the repository. This new working tree is called a
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"linked working tree" as opposed to the "main working tree" prepared by "git
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init" or "git clone". A repository has one main working tree (if it's not a
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bare repository) and zero or more linked working trees.
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When you are done with a linked working tree you can simply delete it.
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The working tree's administrative files in the repository (see
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"DETAILS" below) will eventually be removed automatically (see
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`gc.worktreePruneExpire` in linkgit:git-config[1]), or you can run
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`git worktree prune` in the main or any linked working tree to
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clean up any stale administrative files.
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If you move a linked working tree, you need to manually update the
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administrative files so that they do not get pruned automatically. See
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section "DETAILS" for more information.
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If a linked working tree is stored on a portable device or network share
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which is not always mounted, you can prevent its administrative files from
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being pruned by creating a file named 'locked' alongside the other
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administrative files, optionally containing a plain text reason that
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pruning should be suppressed. See section "DETAILS" for more information.
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COMMANDS
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--------
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add <path> [<branch>]::
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Create `<path>` and checkout `<branch>` into it. The new working directory
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is linked to the current repository, sharing everything except working
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directory specific files such as HEAD, index, etc.
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+
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If `<branch>` is omitted and neither `-b` nor `-B` nor `--detached` used,
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then, as a convenience, a new branch based at HEAD is created automatically,
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as if `-b $(basename <path>)` was specified.
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prune::
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Prune working tree information in $GIT_DIR/worktrees.
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list::
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List details of each worktree. The main worktree is listed first, followed by
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each of the linked worktrees. The output details include if the worktree is
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bare, the revision currently checked out, and the branch currently checked out
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(or 'detached HEAD' if none).
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OPTIONS
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-------
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-f::
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--force::
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By default, `add` refuses to create a new working tree when `<branch>`
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is already checked out by another working tree. This option overrides
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that safeguard.
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-b <new-branch>::
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-B <new-branch>::
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With `add`, create a new branch named `<new-branch>` starting at
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`<branch>`, and check out `<new-branch>` into the new working tree.
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If `<branch>` is omitted, it defaults to HEAD.
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By default, `-b` refuses to create a new branch if it already
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exists. `-B` overrides this safeguard, resetting `<new-branch>` to
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`<branch>`.
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--detach::
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With `add`, detach HEAD in the new working tree. See "DETACHED HEAD"
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in linkgit:git-checkout[1].
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-n::
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--dry-run::
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With `prune`, do not remove anything; just report what it would
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remove.
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--porcelain::
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With `list`, output in an easy-to-parse format for scripts.
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This format will remain stable across Git versions and regardless of user
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configuration. See below for details.
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-v::
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--verbose::
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With `prune`, report all removals.
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--expire <time>::
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With `prune`, only expire unused working trees older than <time>.
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DETAILS
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-------
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Each linked working tree has a private sub-directory in the repository's
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$GIT_DIR/worktrees directory. The private sub-directory's name is usually
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the base name of the linked working tree's path, possibly appended with a
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number to make it unique. For example, when `$GIT_DIR=/path/main/.git` the
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command `git worktree add /path/other/test-next next` creates the linked
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working tree in `/path/other/test-next` and also creates a
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`$GIT_DIR/worktrees/test-next` directory (or `$GIT_DIR/worktrees/test-next1`
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if `test-next` is already taken).
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Within a linked working tree, $GIT_DIR is set to point to this private
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directory (e.g. `/path/main/.git/worktrees/test-next` in the example) and
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$GIT_COMMON_DIR is set to point back to the main working tree's $GIT_DIR
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(e.g. `/path/main/.git`). These settings are made in a `.git` file located at
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the top directory of the linked working tree.
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Path resolution via `git rev-parse --git-path` uses either
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$GIT_DIR or $GIT_COMMON_DIR depending on the path. For example, in the
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linked working tree `git rev-parse --git-path HEAD` returns
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`/path/main/.git/worktrees/test-next/HEAD` (not
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`/path/other/test-next/.git/HEAD` or `/path/main/.git/HEAD`) while `git
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rev-parse --git-path refs/heads/master` uses
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$GIT_COMMON_DIR and returns `/path/main/.git/refs/heads/master`,
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since refs are shared across all working trees.
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See linkgit:gitrepository-layout[5] for more information. The rule of
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thumb is do not make any assumption about whether a path belongs to
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$GIT_DIR or $GIT_COMMON_DIR when you need to directly access something
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inside $GIT_DIR. Use `git rev-parse --git-path` to get the final path.
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If you move a linked working tree, you need to update the 'gitdir' file
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in the entry's directory. For example, if a linked working tree is moved
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to `/newpath/test-next` and its `.git` file points to
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`/path/main/.git/worktrees/test-next`, then update
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`/path/main/.git/worktrees/test-next/gitdir` to reference `/newpath/test-next`
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instead.
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To prevent a $GIT_DIR/worktrees entry from being pruned (which
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can be useful in some situations, such as when the
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entry's working tree is stored on a portable device), add a file named
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'locked' to the entry's directory. The file contains the reason in
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plain text. For example, if a linked working tree's `.git` file points
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to `/path/main/.git/worktrees/test-next` then a file named
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`/path/main/.git/worktrees/test-next/locked` will prevent the
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`test-next` entry from being pruned. See
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linkgit:gitrepository-layout[5] for details.
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LIST OUTPUT FORMAT
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------------------
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The worktree list command has two output formats. The default format shows the
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details on a single line with columns. For example:
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------------
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S git worktree list
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/path/to/bare-source (bare)
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/path/to/linked-worktree abcd1234 [master]
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/path/to/other-linked-worktree 1234abc (detached HEAD)
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------------
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Porcelain Format
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~~~~~~~~~~~~~~~~
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The porcelain format has a line per attribute. Attributes are listed with a
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label and value separated by a single space. Boolean attributes (like 'bare'
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and 'detached') are listed as a label only, and are only present if and only
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if the value is true. An empty line indicates the end of a worktree. For
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example:
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------------
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S git worktree list --porcelain
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worktree /path/to/bare-source
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bare
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worktree /path/to/linked-worktree
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HEAD abcd1234abcd1234abcd1234abcd1234abcd1234
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branch refs/heads/master
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worktree /path/to/other-linked-worktree
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HEAD 1234abc1234abc1234abc1234abc1234abc1234a
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detached
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------------
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EXAMPLES
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--------
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You are in the middle of a refactoring session and your boss comes in and
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demands that you fix something immediately. You might typically use
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linkgit:git-stash[1] to store your changes away temporarily, however, your
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working tree is in such a state of disarray (with new, moved, and removed
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files, and other bits and pieces strewn around) that you don't want to risk
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disturbing any of it. Instead, you create a temporary linked working tree to
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make the emergency fix, remove it when done, and then resume your earlier
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refactoring session.
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------------
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$ git worktree add -b emergency-fix ../temp master
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$ pushd ../temp
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# ... hack hack hack ...
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$ git commit -a -m 'emergency fix for boss'
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$ popd
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$ rm -rf ../temp
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$ git worktree prune
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------------
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BUGS
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----
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Multiple checkout in general is still experimental, and the support
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for submodules is incomplete. It is NOT recommended to make multiple
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checkouts of a superproject.
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git-worktree could provide more automation for tasks currently
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performed manually, such as:
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- `remove` to remove a linked working tree and its administrative files (and
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warn if the working tree is dirty)
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- `mv` to move or rename a working tree and update its administrative files
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- `lock` to prevent automatic pruning of administrative files (for instance,
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for a working tree on a portable device)
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GIT
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---
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Part of the linkgit:git[1] suite
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