submodule: do not copy unknown update mode from .gitmodules

diff --git a/diffcore-rename.c b/diffcore-rename.c
index f639601c762ebbd12374fa739d1d63efaf265e2a..6c7a72fbe74e8dd6fca07d2555cdea62c16b8b1e 100644 (file)
--- a/diffcore-rename.c
+++ b/diffcore-rename.c
@@ -48,7 +48,7 @@ static struct diff_rename_dst *locate_rename_dst(struct diff_filespec *two,
                memmove(rename_dst + first + 1, rename_dst + first,
                        (rename_dst_nr - first - 1) * sizeof(*rename_dst));
        rename_dst[first].two = alloc_filespec(two->path);
-       fill_filespec(rename_dst[first].two, two->sha1, two->mode);
+       fill_filespec(rename_dst[first].two, two->sha1, two->sha1_valid, two->mode);
        rename_dst[first].pair = NULL;
        return &(rename_dst[first]);
 }
@@ -389,6 +389,7 @@ static int find_exact_renames(struct diff_options *options)
        struct hash_table file_table;
 
        init_hash(&file_table);
+       preallocate_hash(&file_table, rename_src_nr + rename_dst_nr);
        for (i = 0; i < rename_src_nr; i++)
                insert_file_table(&file_table, -1, i, rename_src[i].p->one);
 
@@ -512,9 +513,15 @@ void diffcore_rename(struct diff_options *options)
                        else if (options->single_follow &&
                                 strcmp(options->single_follow, p->two->path))
                                continue; /* not interested */
+                       else if (!DIFF_OPT_TST(options, RENAME_EMPTY) &&
+                                is_empty_blob_sha1(p->two->sha1))
+                               continue;
                        else
                                locate_rename_dst(p->two, 1);
                }
+               else if (!DIFF_OPT_TST(options, RENAME_EMPTY) &&
+                        is_empty_blob_sha1(p->one->sha1))
+                       continue;
                else if (!DIFF_PAIR_UNMERGED(p) && !DIFF_FILE_VALID(p->two)) {
                        /*
                         * If the source is a broken "delete", and