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Add explanation why we do not allow to sparse checkout to empty working tree

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Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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Nguyễn Thái Ngọc Duy 2011-09-22 21:24:23 +10:00 committed by Junio C Hamano
parent 17d26a4d04
commit a7bc906f2e
1 changed files with 6 additions and 1 deletions
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7
unpack-trees.c
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@ -1119,8 +1119,13 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
} }
if (ret < 0) if (ret < 0)
goto return_failed; goto return_failed;
/*
* Sparse checkout is meant to narrow down checkout area
* but it does not make sense to narrow down to empty working
* tree. This is usually a mistake in sparse checkout rules.
* Do not allow users to do that.
*/
if (o->result.cache_nr && empty_worktree) { if (o->result.cache_nr && empty_worktree) {
/* dubious---why should this fail??? */
ret = unpack_failed(o, "Sparse checkout leaves no entry on working directory"); ret = unpack_failed(o, "Sparse checkout leaves no entry on working directory");
goto done; goto done;
} }