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-rw-r--r--Documentation/git-sparse-checkout.txt40
1 files changed, 36 insertions, 4 deletions
diff --git a/Documentation/git-sparse-checkout.txt b/Documentation/git-sparse-checkout.txt
index c0342e5393..a0eeaeb02e 100644
--- a/Documentation/git-sparse-checkout.txt
+++ b/Documentation/git-sparse-checkout.txt
@@ -70,6 +70,16 @@ C-style quoted strings.
`core.sparseCheckoutCone` is enabled, the given patterns are interpreted
as directory names as in the 'set' subcommand.
+'reapply'::
+ Reapply the sparsity pattern rules to paths in the working tree.
+ Commands like merge or rebase can materialize paths to do their
+ work (e.g. in order to show you a conflict), and other
+ sparse-checkout commands might fail to sparsify an individual file
+ (e.g. because it has unstaged changes or conflicts). In such
+ 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.).
+
'disable'::
Disable the `core.sparseCheckout` config setting, and restore the
working directory to include all files. Leaves the sparse-checkout
@@ -190,10 +200,32 @@ directory.
SUBMODULES
----------
-If your repository contains one or more submodules, then those submodules will
-appear based on which you initialized with the `git submodule` command. If
-your sparse-checkout patterns exclude an initialized submodule, then that
-submodule will still appear in your working directory.
+If your repository contains one or more submodules, then submodules
+are populated based on interactions with the `git submodule` command.
+Specifically, `git submodule init -- <path>` will ensure the submodule
+at `<path>` is present, while `git submodule deinit [-f] -- <path>`
+will remove the files for the submodule at `<path>` (including any
+untracked files, uncommitted changes, and unpushed history). Similar
+to how sparse-checkout removes files from the working tree but still
+leaves entries in the index, deinitialized submodules are removed from
+the working directory but still have an entry in the index.
+
+Since submodules may have unpushed changes or untracked files,
+removing them could result in data loss. Thus, changing sparse
+inclusion/exclusion rules will not cause an already checked out
+submodule to be removed from the working copy. Said another way, just
+as `checkout` will not cause submodules to be automatically removed or
+initialized even when switching between branches that remove or add
+submodules, using `sparse-checkout` to reduce or expand the scope of
+"interesting" files will not cause submodules to be automatically
+deinitialized or initialized either.
+
+Further, the above facts mean that there are multiple reasons that
+"tracked" files might not be present in the working copy: sparsity
+pattern application from sparse-checkout, and submodule initialization
+state. Thus, commands like `git grep` that work on tracked files in
+the working copy may return results that are limited by either or both
+of these restrictions.
SEE ALSO