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sparse-checkout: toggle sparse index from builtin

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The sparse index extension is used to signal that index writes should be
in sparse mode. This was only updated using GIT_TEST_SPARSE_INDEX=1.

Add a '--[no-]sparse-index' option to 'git sparse-checkout init' that
specifies if the sparse index should be used. It also updates the index
to use the correct format, either way. Add a warning in the
documentation that the use of a repository extension might reduce
compatibility with third-party tools. 'git sparse-checkout init' already
sets extension.worktreeConfig, which places most sparse-checkout users
outside of the scope of most third-party tools.

Update t1092-sparse-checkout-compatibility.sh to use this CLI instead of
GIT_TEST_SPARSE_INDEX=1.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Derrick Stolee
2021-03-30 13:11:00 +00:00
committed by Junio C Hamano
parent 58300f4743
commit 122ba1f7b5
5 changed files with 79 additions and 33 deletions
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3
sparse-index.h
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@ -5,4 +5,7 @@ struct index_state;
void ensure_full_index(struct index_state *istate);
int convert_to_sparse(struct index_state *istate);
struct repository;
int set_sparse_index_config(struct repository *repo, int enable);
#endif