[PATCH v1 0/3] check-attr: integrate with sparse-index

Turn on sparse-index feature within `git check-attr` command. Add necessary modifications and test them.

Shuqi Liang (3):
  attr.c: read attributes in a sparse directory
  t1092: add tests for `git check-attr`
  check-attr: integrate with sparse-index

 attr.c                                   | 64 ++++++++++++++++--------
 builtin/check-attr.c                     |  3 ++
 t/t1092-sparse-checkout-compatibility.sh | 40 +++++++++++++++
 3 files changed, 86 insertions(+), 21 deletions(-)

base-commit: 9748a6820043d5815bee770ffa51647e0adc2cf0