From 2da0919f0039f5e478e2319002e976008a051b6f Mon Sep 17 00:00:00 2001 From: Derrick Stolee Date: Sun, 22 Aug 2021 14:55:59 -0400 Subject: [PATCH] sparse-checkout: add config to disable deleting dirs The clean_tracked_sparse_directories() method deletes the tracked directories that go out of scope when the sparse-checkout cone changes, at least in cone mode. This is new behavior, but is recommended based on our understanding of how users are interacting with the feature in most cases. It is possible that some users will object to the new behavior, so create a new configuration option 'index.deleteSparseDirectories' that can be set to 'false' to make clean_tracked_sparse_directories() do nothing. This will keep all untracked files in the working tree and cause performance problems with the sparse index, but those trade-offs are for the user to decide. Signed-off-by: Derrick Stolee --- Documentation/config/index.adoc | 6 ++++++ builtin/sparse-checkout.c | 9 ++++++++- t/t1091-sparse-checkout-builtin.sh | 4 ++++ 3 files changed, 18 insertions(+), 1 deletion(-) diff --git a/Documentation/config/index.adoc b/Documentation/config/index.adoc index 3eff42036033ea..0d6d05b70ce03d 100644 --- a/Documentation/config/index.adoc +++ b/Documentation/config/index.adoc @@ -1,3 +1,9 @@ +index.deleteSparseDirectories:: + When enabled, the cone mode sparse-checkout feature will delete + directories that are outside of the sparse-checkout cone, unless + such a directory contains an untracked, non-ignored file. Defaults + to true. + index.recordEndOfIndexEntries:: Specifies whether the index file should include an "End Of Index Entry" section. This reduces index load time on multiprocessor diff --git a/builtin/sparse-checkout.c b/builtin/sparse-checkout.c index 14dcace5f8ff7c..dcfe1832af33ff 100644 --- a/builtin/sparse-checkout.c +++ b/builtin/sparse-checkout.c @@ -111,7 +111,7 @@ static int sparse_checkout_list(int argc, const char **argv, const char *prefix, static void clean_tracked_sparse_directories(struct repository *r) { - int i, was_full = 0; + int i, value, was_full = 0; struct strbuf path = STRBUF_INIT; size_t pathlen; struct string_list_item *item; @@ -127,6 +127,13 @@ static void clean_tracked_sparse_directories(struct repository *r) !r->index->sparse_checkout_patterns->use_cone_patterns) return; + /* + * Users can disable this behavior. + */ + if (!repo_config_get_bool(r, "index.deletesparsedirectories", &value) && + !value) + return; + /* * Use the sparse index as a data structure to assist finding * directories that are safe to delete. This conversion to a diff --git a/t/t1091-sparse-checkout-builtin.sh b/t/t1091-sparse-checkout-builtin.sh index 29838259bb4fae..7e63354b8e33e5 100755 --- a/t/t1091-sparse-checkout-builtin.sh +++ b/t/t1091-sparse-checkout-builtin.sh @@ -783,6 +783,10 @@ test_expect_success 'cone mode clears ignored subdirectories' ' git -C repo status --porcelain=v2 >out && test_must_be_empty out && + git -C repo -c index.deleteSparseDirectories=false sparse-checkout reapply && + test_path_is_dir repo/folder1 && + test_path_is_dir repo/deep/deeper2 && + git -C repo sparse-checkout reapply && test_path_is_missing repo/folder1 && test_path_is_missing repo/deep/deeper2 &&