[PATCH 2/3] receive-pack: add advertisement of different protocol options

[Stefan Beller <sbeller@google.com>]

Signed-off-by: Stefan Beller <sbeller@google.com>
---
 builtin/receive-pack.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index e0ce78e..a077b1d 100644
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -71,6 +71,8 @@ static long nonce_stamp_slop;
 static unsigned long nonce_stamp_slop_limit;
 static struct ref_transaction *transaction;
 
+static const char *advertised_versions = NULL;
+
 static enum deny_action parse_deny_action(const char *var, const char *value)
 {
 	if (value) {
@@ -168,6 +170,9 @@ static int receive_pack_config(const char *var, const char *value, void *cb)
 		return 0;
 	}
 
+	if (strcmp(var, "receive.advertisedversions") == 0)
+		return git_config_string(&advertised_versions, var, value);
+
 	return git_default_config(var, value, cb);
 }
 
@@ -189,6 +194,8 @@ static void show_ref(const char *path, const unsigned char *sha1)
 			strbuf_addstr(&cap, " ofs-delta");
 		if (push_cert_nonce)
 			strbuf_addf(&cap, " push-cert=%s", push_cert_nonce);
+		if (advertise_versions)
+			strbuf_addstr(&cap, " versions=%s", advertise_versions);
 		strbuf_addf(&cap, " agent=%s", git_user_agent_sanitized());
 		packet_write(1, "%s %s%c%s\n",
 			     sha1_to_hex(sha1), path, 0, cap.buf);
-- 
2.3.0.81.gc37f363