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-rw-r--r--log-tree.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/log-tree.c b/log-tree.c
index 3a6c84dab5..b67b8dd17a 100644
--- a/log-tree.c
+++ b/log-tree.c
@@ -97,6 +97,11 @@ void show_log(struct rev_info *opt, const char *sep)
subject = "Subject: ";
printf("From %s Mon Sep 17 00:00:00 2001\n", sha1);
+ if (opt->message_id)
+ printf("Message-Id: <%s>\n", opt->message_id);
+ if (opt->ref_message_id)
+ printf("In-Reply-To: <%s>\nReferences: <%s>\n",
+ opt->ref_message_id, opt->ref_message_id);
if (opt->mime_boundary) {
static char subject_buffer[1024];
static char buffer[1024];