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-rw-r--r--builtin/rebase.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/builtin/rebase.c b/builtin/rebase.c
index 49856d9bf7..7522be837c 100644
--- a/builtin/rebase.c
+++ b/builtin/rebase.c
@@ -1368,6 +1368,24 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
die(_("Could not detach HEAD"));
strbuf_release(&msg);
+ /*
+ * If the onto is a proper descendant of the tip of the branch, then
+ * we just fast-forwarded.
+ */
+ strbuf_reset(&msg);
+ if (!oidcmp(&merge_base, &options.orig_head)) {
+ printf(_("Fast-forwarded %s to %s. \n"),
+ branch_name, options.onto_name);
+ strbuf_addf(&msg, "rebase finished: %s onto %s",
+ options.head_name ? options.head_name : "detached HEAD",
+ oid_to_hex(&options.onto->object.oid));
+ reset_head(NULL, "Fast-forwarded", options.head_name, 0,
+ "HEAD", msg.buf);
+ strbuf_release(&msg);
+ ret = !!finish_rebase(&options);
+ goto cleanup;
+ }
+
strbuf_addf(&revisions, "%s..%s",
options.root ? oid_to_hex(&options.onto->object.oid) :
(options.restrict_revision ?