sparse-checkout: use in-process update for disable subcommand

The 'git sparse-checkout disable' subcommand returns a user to a
full working directory. The old process for doing this required
updating the sparse-checkout file with the "/*" pattern and then
updating the working directory with core.sparseCheckout enabled.
Finally, the sparse-checkout file could be removed and the config
setting disabled.

However, it is valuable to keep a user's sparse-checkout file
intact so they can re-enable the sparse-checkout they previously
used with 'git sparse-checkout init'. This is now possible with
the in-process mechanism for updating the working directory.

Reported-by: Szeder Gábor <szeder.dev@gmail.com>
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/Documentation/git-sparse-checkout.txt b/Documentation/git-sparse-checkout.txt
index 8535f0cf40..b975285673 100644
--- a/Documentation/git-sparse-checkout.txt
+++ b/Documentation/git-sparse-checkout.txt
@@ -52,8 +52,10 @@ When the `--stdin` option is provided, the patterns are read from
 standard in as a newline-delimited list instead of from the arguments.
 
 'disable'::
-	Remove the sparse-checkout file, set `core.sparseCheckout` to
-	`false`, and restore the working directory to include all files.
+	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.
 
 SPARSE CHECKOUT
 ---------------