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-rw-r--r--builtin/diff.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/builtin/diff.c b/builtin/diff.c
index e45e19e..1baea18 100644
--- a/builtin/diff.c
+++ b/builtin/diff.c
@@ -139,6 +139,8 @@ static int builtin_diff_index(struct rev_info *revs,
const char *arg = argv[1];
if (!strcmp(arg, "--cached") || !strcmp(arg, "--staged"))
option |= DIFF_INDEX_CACHED;
+ else if (!strcmp(arg, "--merge-base"))
+ option |= DIFF_INDEX_MERGE_BASE;
else
usage(builtin_diff_usage);
argv++; argc--;