Merge branch 'en/rename-directory-detection'

Rename detection logic in "diff" family that is used in "merge" has
learned to guess when all of x/a, x/b and x/c have moved to z/a,
z/b and z/c, it is likely that x/d added in the meantime would also
want to move to z/d by taking the hint that the entire directory
'x' moved to 'z'.  A bug causing dirty files involved in a rename
to be overwritten during merge has also been fixed as part of this
work.

* en/rename-directory-detection: (29 commits)
  merge-recursive: ensure we write updates for directory-renamed file
  merge-recursive: avoid spurious rename/rename conflict from dir renames
  directory rename detection: new testcases showcasing a pair of bugs
  merge-recursive: fix remaining directory rename + dirty overwrite cases
  merge-recursive: fix overwriting dirty files involved in renames
  merge-recursive: avoid clobbering untracked files with directory renames
  merge-recursive: apply necessary modifications for directory renames
  merge-recursive: when comparing files, don't include trees
  merge-recursive: check for file level conflicts then get new name
  merge-recursive: add computation of collisions due to dir rename & merging
  merge-recursive: check for directory level conflicts
  merge-recursive: add get_directory_renames()
  merge-recursive: make a helper function for cleanup for handle_renames
  merge-recursive: split out code for determining diff_filepairs
  merge-recursive: make !o->detect_rename codepath more obvious
  merge-recursive: fix leaks of allocated renames and diff_filepairs
  merge-recursive: introduce new functions to handle rename logic
  merge-recursive: move the get_renames() function
  directory rename detection: tests for handling overwriting dirty files
  directory rename detection: tests for handling overwriting untracked files
  ...

1 files changed, 2 insertions, 2 deletions

diff --git a/unpack-trees.c b/unpack-trees.c
index e73745051e..79fd97074e 100644
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -1509,8 +1509,8 @@ static int verify_uptodate_1(const struct cache_entry *ce,
 		add_rejected_path(o, error_type, ce->name);
 }
 
-static int verify_uptodate(const struct cache_entry *ce,
-			   struct unpack_trees_options *o)
+int verify_uptodate(const struct cache_entry *ce,
+		    struct unpack_trees_options *o)
 {
 	if (!o->skip_sparse_checkout && (ce->ce_flags & CE_NEW_SKIP_WORKTREE))
 		return 0;