Make ls-remote http://... list HEAD, like for git://...

This makes a struct ref able to represent a symref, and makes http.c
able to recognize one, and makes transport.c look for "HEAD" as a ref
in the list, and makes it dereference symrefs for the resulting ref,
if any.

Signed-off-by: Daniel Barkalow <barkalow@iabervon.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/http.c b/http.c
index c8df13b8a..acf746a12 100644
--- a/http.c
+++ b/http.c
@@ -626,7 +626,10 @@ int http_fetch_ref(const char *base, struct ref *ref)
 			strbuf_rtrim(&buffer);
 			if (buffer.len == 40)
 				ret = get_sha1_hex(buffer.buf, ref->old_sha1);
-			else
+			else if (!prefixcmp(buffer.buf, "ref: ")) {
+				ref->symref = xstrdup(buffer.buf + 5);
+				ret = 0;
+			} else
 				ret = 1;
 		} else {
 			ret = error("Couldn't get %s for %s\n%s",