[PATCH 2/3] merge-recursive: add ability to turn off directory rename detection

[Elijah Newren]

Signed-off-by: Elijah Newren <new...@gmail.com>
---
 merge-recursive.c | 18 +++++++++++++-----
 merge-recursive.h |  1 +
 2 files changed, 14 insertions(+), 5 deletions(-)

diff --git a/merge-recursive.c b/merge-recursive.c
index f110e1c5ec..bf3cb03d3a 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -2843,12 +2843,19 @@ static int handle_renames(struct merge_options *o,
        head_pairs = get_diffpairs(o, common, head);
        merge_pairs = get_diffpairs(o, common, merge);
 
-       dir_re_head = get_directory_renames(head_pairs, head);
-       dir_re_merge = get_directory_renames(merge_pairs, merge);
+       if (o->detect_directory_renames) {
+               dir_re_head = get_directory_renames(head_pairs, head);
+               dir_re_merge = get_directory_renames(merge_pairs, merge);
 
-       handle_directory_level_conflicts(o,
-                                        dir_re_head, head,
-                                        dir_re_merge, merge);
+               handle_directory_level_conflicts(o,
+                                                dir_re_head, head,
+                                                dir_re_merge, merge);
+       } else {
+               dir_re_head  = xmalloc(sizeof(*dir_re_head));
+               dir_re_merge = xmalloc(sizeof(*dir_re_merge));
+               dir_rename_init(dir_re_head);
+               dir_rename_init(dir_re_merge);
+       }
 
        ri->head_renames  = get_renames(o, head_pairs,
                                        dir_re_merge, dir_re_head, head,
@@ -3541,6 +3548,7 @@ void init_merge_options(struct merge_options *o)
        o->renormalize = 0;
        o->diff_detect_rename = -1;
        o->merge_detect_rename = -1;
+       o->detect_directory_renames = 1;
        merge_recursive_config(o);
        merge_verbosity = getenv("GIT_MERGE_VERBOSITY");
        if (merge_verbosity)
diff --git a/merge-recursive.h b/merge-recursive.h
index fa7bc6b683..e39ee5d78b 100644
--- a/merge-recursive.h
+++ b/merge-recursive.h
@@ -18,6 +18,7 @@ struct merge_options {
        unsigned renormalize : 1;
        long xdl_opts;
        int verbosity;
+       int detect_directory_renames;
        int diff_detect_rename;
        int merge_detect_rename;
        int diff_rename_limit;
-- 
2.18.0.12.g97a29da30a