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-rw-r--r--merge-recursive.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/merge-recursive.c b/merge-recursive.c
index db9ba19ddf..0cc1e6fc14 100644
--- a/merge-recursive.c
+++ b/merge-recursive.c
@@ -1759,6 +1759,8 @@ int parse_merge_opt(struct merge_options *o, const char *s)
o->subtree_shift = s + strlen("subtree=");
else if (!strcmp(s, "patience"))
o->xdl_opts |= XDF_PATIENCE_DIFF;
+ else if (!strcmp(s, "histogram"))
+ o->xdl_opts |= XDF_HISTOGRAM_DIFF;
else if (!strcmp(s, "ignore-space-change"))
o->xdl_opts |= XDF_IGNORE_WHITESPACE_CHANGE;
else if (!strcmp(s, "ignore-all-space"))