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rm: skip sparse paths with missing SKIP_WORKTREE

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If a path does not match the sparse-checkout cone but is somehow missing
the SKIP_WORKTREE bit, then 'git rm' currently succeeds in removing the
file. One reason a user might be in this situation is a merge conflict
outside of the sparse-checkout cone. Removing such a file might be
problematic for users who are not sure what they are doing.

Add a check to path_in_sparse_checkout() when 'git rm' is checking if a
path should be considered for deletion. Of course, this check is ignored
if the '--sparse' option is specified, allowing users who accept the
risks to continue with the removal.

This also removes a confusing behavior where a user asks for a directory
to be removed, but only the entries that are within the sparse-checkout
definition are removed. Now, 'git rm <dir>' will fail without '--sparse'
and will succeed in removing all contained paths with '--sparse'.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Derrick Stolee 2021-09-24 15:39:12 +00:00 committed by Junio C Hamano
parent f9786f9b85
commit d7c4415e55
2 changed files with 20 additions and 3 deletions
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4
builtin/rm.c
View file

@ -301,7 +301,9 @@ int cmd_rm(int argc, const char **argv, const char *prefix)
for (i = 0; i < active_nr; i++) {
const struct cache_entry *ce = active_cache[i];
if (!include_sparse && ce_skip_worktree(ce))
if (!include_sparse &&
(ce_skip_worktree(ce) ||
!path_in_sparse_checkout(ce->name, &the_index)))
continue;
if (!ce_path_match(&the_index, ce, &pathspec, seen))
continue;

19
t/t3602-rm-sparse-checkout.sh
View file

@ -37,9 +37,13 @@ done
test_expect_success 'recursive rm does not remove sparse entries' '
git reset --hard &&
git sparse-checkout set sub/dir &&
git rm -r sub &&
test_must_fail git rm -r sub &&
git rm --sparse -r sub &&
git status --porcelain -uno >actual &&
echo "D sub/dir/e" >expected &&
cat >expected <<-\EOF &&
D sub/d
D sub/dir/e
EOF
test_cmp expected actual
'
@ -87,4 +91,15 @@ test_expect_success 'do not warn about sparse entries with --ignore-unmatch' '
git ls-files --error-unmatch b
'
test_expect_success 'refuse to rm a non-skip-worktree path outside sparse cone' '
git reset --hard &&
git sparse-checkout set a &&
git update-index --no-skip-worktree b &&
test_must_fail git rm b 2>stderr &&
test_cmp b_error_and_hint stderr &&
git rm --sparse b 2>stderr &&
test_must_be_empty stderr &&
test_path_is_missing b
'
test_done