7a738b40f6
Further preparatory clean-up for "worktree" feature continues.
* nd/worktree-cleanup-post-head-protection:
worktree: simplify prefixing paths
worktree: avoid 0{40}, too many zeroes, hard to read
worktree.c: use is_dot_or_dotdot()
git-worktree.txt: keep subcommand listing in alphabetical order
worktree.c: rewrite mark_current_worktree() to avoid strbuf
completion: support git-worktree
236 lines
8.6 KiB
Plaintext
236 lines
8.6 KiB
Plaintext
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] [--checkout] [-b <new-branch>] <path> [<branch>]
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'git worktree list' [--porcelain]
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'git worktree prune' [-n] [-v] [--expire <expire>]
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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. `-` may also be
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specified as `<branch>`; it is synonymous with `@{-1}`.
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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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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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prune::
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Prune working tree information in $GIT_DIR/worktrees.
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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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--[no-]checkout::
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By default, `add` checks out `<branch>`, however, `--no-checkout` can
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be used to suppress checkout in order to make customizations,
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such as configuring sparse-checkout. See "Sparse checkout"
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in linkgit:git-read-tree[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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