[PATCH v2 0/4] stop storing trailing slash in dir-hash

This series changes name-hash to stop storing the (redundant) trailing slash with index_state.dir_hash entries. As an intentional side-effect, the series fixes [1] in a cleaner way (suggested by Junio [2]) than either [3] (680be044 in master) or [4].

Changes since v1 [5]:

* Add index_file_exists() as complement of index_dir_exists() introduced
  in v1 rather than changing the behavior of index_name_exists() to
  check only for files. To avoid disturbing current or future in-flight
  topics, index_name_exists() is retained (suggested by Junio [6]) as a
  thin wrapper dispatching either to index_file_exists() or
  index_dir_exists().

* Split v1 patch 1 into v2 patches 1 & 2 to ease review. (This is
  possible now that index_name_exists() retains its original behavior.)

[1]: http://thread.gmane.org/gmane.comp.version-control.git/232727 [2]: http://thread.gmane.org/gmane.comp.version-control.git/232727/focus=232813 [3]: http://thread.gmane.org/gmane.comp.version-control.git/232796 [4]: http://thread.gmane.org/gmane.comp.version-control.git/232833 [5]: http://thread.gmane.org/gmane.comp.version-control.git/234743 [6]: http://article.gmane.org/gmane.comp.version-control.git/234761

Eric Sunshine (4):
  name-hash: refactor polymorphic index_name_exists()
  employ new explicit "exists in index?" API
  name-hash: stop storing trailing '/' on paths in index_state.dir_hash
  dir: revert work-around for retired dangerous behavior

 cache.h        |  4 ++++
 dir.c          | 28 ++++++++-------------------
 name-hash.c    | 61 ++++++++++++++++++++++++++++++++--------------------------
 read-cache.c   |  4 ++--
 unpack-trees.c |  4 ++--
 5 files changed, 50 insertions(+), 51 deletions(-)