Avoid "diff-index --cached" optimization under --find-copies-harder

diff --git a/diff-lib.c b/diff-lib.c
index 1cb97af22d0f1d3f5ea6cc37a86df4b14b52d1f7..ae75eacbcc00cd7d27d415c91eac5b819db4221e 100644 (file)
--- a/diff-lib.c
+++ b/diff-lib.c
@@ -446,7 +446,8 @@ int run_diff_index(struct rev_info *revs, int cached)
        memset(&opts, 0, sizeof(opts));
        opts.head_idx = 1;
        opts.index_only = cached;
-       opts.diff_index_cached = cached;
+       opts.diff_index_cached = (cached &&
+                                 !DIFF_OPT_TST(&revs->diffopt, FIND_COPIES_HARDER));
        opts.merge = 1;
        opts.fn = oneway_diff;
        opts.unpack_data = revs;
@@ -503,7 +504,7 @@ int do_diff_cache(const unsigned char *tree_sha1, struct diff_options *opt)
        memset(&opts, 0, sizeof(opts));
        opts.head_idx = 1;
        opts.index_only = 1;
-       opts.diff_index_cached = 1;
+       opts.diff_index_cached = !DIFF_OPT_TST(opt, FIND_COPIES_HARDER);
        opts.merge = 1;
        opts.fn = oneway_diff;
        opts.unpack_data = &revs;