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To improve the submodules UX, we would like to teach Git to handle
branches in submodules. Start this process by teaching "git branch" the
--recurse-submodules option so that "git branch --recurse-submodules
topic" will create the `topic` branch in the superproject and its
submodules.
Although this commit does not introduce breaking changes, it does not
work well with existing --recurse-submodules commands because "git
branch --recurse-submodules" writes to the submodule ref store, but most
commands only consider the superproject gitlink and ignore the submodule
ref store. For example, "git checkout --recurse-submodules" will check
out the commits in the superproject gitlinks (and put the submodules in
detached HEAD) instead of checking out the submodule branches.
Because of this, this commit introduces a new configuration value,
`submodule.propagateBranches`. The plan is for Git commands to
prioritize submodule ref store information over superproject gitlinks if
this value is true. Because "git branch --recurse-submodules" writes to
submodule ref stores, for the sake of clarity, it will not function
unless this configuration value is set.
This commit also includes changes that support working with submodules
from a superproject commit because "branch --recurse-submodules" (and
future commands) need to read .gitmodules and gitlinks from the
superproject commit, but submodules are typically read from the
filesystem's .gitmodules and the index's gitlinks. These changes are:
* add a submodules_of_tree() helper that gives the relevant
information of an in-tree submodule (e.g. path and oid) and
initializes the repository
* add is_tree_submodule_active() by adding a treeish_name parameter to
is_submodule_active()
* add the "submoduleNotUpdated" advice to advise users to update the
submodules in their trees
Incidentally, fix an incorrect usage string that combined the 'list'
usage of git branch (-l) with the 'create' usage; this string has been
incorrect since its inception, a8dfd5eac4 (Make builtin-branch.c use
parse_options., 2007-10-07).
Helped-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Glen Choo <chooglen@google.com>
Reviewed-by: Jonathan Tan <jonathantanmy@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
109 lines
5.1 KiB
Plaintext
109 lines
5.1 KiB
Plaintext
submodule.<name>.url::
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The URL for a submodule. This variable is copied from the .gitmodules
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file to the git config via 'git submodule init'. The user can change
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the configured URL before obtaining the submodule via 'git submodule
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update'. If neither submodule.<name>.active or submodule.active are
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set, the presence of this variable is used as a fallback to indicate
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whether the submodule is of interest to git commands.
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See linkgit:git-submodule[1] and linkgit:gitmodules[5] for details.
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submodule.<name>.update::
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The method by which a submodule is updated by 'git submodule update',
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which is the only affected command, others such as
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'git checkout --recurse-submodules' are unaffected. It exists for
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historical reasons, when 'git submodule' was the only command to
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interact with submodules; settings like `submodule.active`
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and `pull.rebase` are more specific. It is populated by
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`git submodule init` from the linkgit:gitmodules[5] file.
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See description of 'update' command in linkgit:git-submodule[1].
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submodule.<name>.branch::
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The remote branch name for a submodule, used by `git submodule
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update --remote`. Set this option to override the value found in
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the `.gitmodules` file. See linkgit:git-submodule[1] and
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linkgit:gitmodules[5] for details.
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submodule.<name>.fetchRecurseSubmodules::
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This option can be used to control recursive fetching of this
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submodule. It can be overridden by using the --[no-]recurse-submodules
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command-line option to "git fetch" and "git pull".
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This setting will override that from in the linkgit:gitmodules[5]
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file.
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submodule.<name>.ignore::
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Defines under what circumstances "git status" and the diff family show
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a submodule as modified. When set to "all", it will never be considered
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modified (but it will nonetheless show up in the output of status and
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commit when it has been staged), "dirty" will ignore all changes
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to the submodules work tree and
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takes only differences between the HEAD of the submodule and the commit
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recorded in the superproject into account. "untracked" will additionally
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let submodules with modified tracked files in their work tree show up.
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Using "none" (the default when this option is not set) also shows
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submodules that have untracked files in their work tree as changed.
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This setting overrides any setting made in .gitmodules for this submodule,
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both settings can be overridden on the command line by using the
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"--ignore-submodules" option. The 'git submodule' commands are not
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affected by this setting.
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submodule.<name>.active::
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Boolean value indicating if the submodule is of interest to git
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commands. This config option takes precedence over the
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submodule.active config option. See linkgit:gitsubmodules[7] for
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details.
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submodule.active::
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A repeated field which contains a pathspec used to match against a
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submodule's path to determine if the submodule is of interest to git
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commands. See linkgit:gitsubmodules[7] for details.
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submodule.recurse::
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A boolean indicating if commands should enable the `--recurse-submodules`
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option by default. Defaults to false.
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+
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When set to true, it can be deactivated via the
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`--no-recurse-submodules` option. Note that some Git commands
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lacking this option may call some of the above commands affected by
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`submodule.recurse`; for instance `git remote update` will call
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`git fetch` but does not have a `--no-recurse-submodules` option.
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For these commands a workaround is to temporarily change the
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configuration value by using `git -c submodule.recurse=0`.
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+
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The following list shows the commands that accept
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`--recurse-submodules` and whether they are supported by this
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setting.
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* `checkout`, `fetch`, `grep`, `pull`, `push`, `read-tree`,
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`reset`, `restore` and `switch` are always supported.
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* `clone` and `ls-files` are not supported.
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* `branch` is supported only if `submodule.propagateBranches` is
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enabled
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submodule.propagateBranches::
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[EXPERIMENTAL] A boolean that enables branching support when
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using `--recurse-submodules` or `submodule.recurse=true`.
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Enabling this will allow certain commands to accept
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`--recurse-submodules` and certain commands that already accept
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`--recurse-submodules` will now consider branches.
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Defaults to false.
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submodule.fetchJobs::
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Specifies how many submodules are fetched/cloned at the same time.
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A positive integer allows up to that number of submodules fetched
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in parallel. A value of 0 will give some reasonable default.
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If unset, it defaults to 1.
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submodule.alternateLocation::
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Specifies how the submodules obtain alternates when submodules are
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cloned. Possible values are `no`, `superproject`.
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By default `no` is assumed, which doesn't add references. When the
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value is set to `superproject` the submodule to be cloned computes
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its alternates location relative to the superprojects alternate.
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submodule.alternateErrorStrategy::
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Specifies how to treat errors with the alternates for a submodule
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as computed via `submodule.alternateLocation`. Possible values are
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`ignore`, `info`, `die`. Default is `die`. Note that if set to `ignore`
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or `info`, and if there is an error with the computed alternate, the
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clone proceeds as if no alternate was specified.
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