[PATCH v4 0/5] [GSoC] remove_subtree(): reimplement using iterators

[Daniel Ferreira <bnmvco@gmail.com>]

Hi there,

This is the fourth version of the GSoC microproject of refactoring
remove_subtree() from recursively using readdir() to use dir_iterator. Below
are the threads for other versions:

v1: https://public-inbox.org/git/CAGZ79kZwT-9mHTiOJ5CEjk2wDFkn6+NcogjX0=vjhsAh16ANYg@mail.gmail.com/T/#t
v2: https://public-inbox.org/git/CACsJy8Dxh-QPBBLfaFWPAWUsbA9GVXA7x+mXLjEvYKhk1zOpig@mail.gmail.com/T/#t
v3: https://public-inbox.org/git/CAGZ79kYtpmURSQWPumobA=e3JBFjKhWCdv_LPhKCd71ZRwMovA@mail.gmail.com/T/#t

In this version of the patch, I followed Michael's suggestion
of splitting the commits responsible for adding the new feature to
dir_iterator. His suggestion of using flags instead of an options
struct has also been adopted.

This version also contains a test that is finally able to test the
function decently (not the one Stefan had suggested, which
did not result in a call to remove_subtree). I am just unsure about
its location in t/. I'd appreciate suggestions to put it in a more
decent home.

Daniel Ferreira (5):
  dir_iterator: add helpers to dir_iterator_advance
  dir_iterator: iterate over dir after its contents
  remove_subtree(): reimplement using iterators
  remove_subtree(): test removing nested directories
  files_reflog_iterator: amend use of dir_iterator

 dir-iterator.c                  | 105 +++++++++++++++++++++++++++++++---------
 dir-iterator.h                  |  14 ++++--
 entry.c                         |  31 ++++--------
 refs/files-backend.c            |   2 +-
 t/t2000-checkout-cache-clash.sh |  11 +++++
 5 files changed, 114 insertions(+), 49 deletions(-)

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