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Merge branch 'nd/maint-sparse-errors'

* nd/maint-sparse-errors:
  Add explanation why we do not allow to sparse checkout to empty working tree
  sparse checkout: show error messages when worktree shaping fails
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2 parents 34c4461 + a7bc906 commit 08ec3b5e4d56f62e8585095a7a4bf21721498ef3 @gitster gitster committed Oct 14, 2011
Showing with 32 additions and 4 deletions.
  1. +16 −0 t/t1011-read-tree-sparse-checkout.sh
  2. +16 −4 unpack-trees.c
@@ -234,4 +234,20 @@ test_expect_success 'read-tree --reset removes outside worktree' '
test_cmp empty result
'
+test_expect_success 'print errors when failed to update worktree' '
+ echo sub >.git/info/sparse-checkout &&
+ git checkout -f init &&
+ mkdir sub &&
+ touch sub/added sub/addedtoo &&
+ test_must_fail git checkout top 2>actual &&
+ cat >expected <<\EOF &&
+error: The following untracked working tree files would be overwritten by checkout:
+ sub/added
+ sub/addedtoo
+Please move or remove them before you can switch branches.
+Aborting
+EOF
+ test_cmp expected actual
+'
+
test_done
View
@@ -1091,6 +1091,7 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
*/
mark_new_skip_worktree(o->el, &o->result, CE_ADDED, CE_SKIP_WORKTREE | CE_NEW_SKIP_WORKTREE);
+ ret = 0;
for (i = 0; i < o->result.cache_nr; i++) {
struct cache_entry *ce = o->result.cache[i];
@@ -1103,19 +1104,30 @@ int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options
* correct CE_NEW_SKIP_WORKTREE
*/
if (ce->ce_flags & CE_ADDED &&
- verify_absent(ce, ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN, o))
- return -1;
+ verify_absent(ce, ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN, o)) {
+ if (!o->show_all_errors)
+ goto return_failed;
+ ret = -1;
+ }
if (apply_sparse_checkout(ce, o)) {
+ if (!o->show_all_errors)
+ goto return_failed;
ret = -1;
- goto done;
}
if (!ce_skip_worktree(ce))
empty_worktree = 0;
}
+ if (ret < 0)
+ 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) {
- /* dubious---why should this fail??? */
ret = unpack_failed(o, "Sparse checkout leaves no entry on working directory");
goto done;
}

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