blame: handle --first-parent

diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index d2ec52bca983d9dfe1094cffe6049c902049e4d6..04cb5a1a060ae0f26d9d49eb02b57408b9c71929 100644 (file)
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -197,7 +197,7 @@ static void show_ref(const char *path, const unsigned char *sha1)
        }
 }
 
-static int show_ref_cb(const char *path, const unsigned char *sha1, int flag, void *unused)
+static int show_ref_cb(const char *path, const struct object_id *oid, int flag, void *unused)
 {
        path = strip_namespace(path);
        /*
@@ -210,7 +210,7 @@ static int show_ref_cb(const char *path, const unsigned char *sha1, int flag, vo
         */
        if (!path)
                path = ".have";
-       show_ref(path, sha1);
+       show_ref(path, oid->hash);
        return 0;
 }
 
@@ -228,6 +228,7 @@ static void collect_one_alternate_ref(const struct ref *ref, void *data)
 static void write_head_info(void)
 {
        struct sha1_array sa = SHA1_ARRAY_INIT;
+
        for_each_alternate_ref(collect_one_alternate_ref, &sa);
        sha1_array_for_each_unique(&sa, show_one_alternate_sha1, NULL);
        sha1_array_clear(&sa);
@@ -910,7 +911,7 @@ static const char *update(struct command *cmd, struct shallow_info *si)
                        return "deletion prohibited";
                }
 
-               if (!strcmp(namespaced_name, head_name)) {
+               if (head_name && !strcmp(namespaced_name, head_name)) {
                        switch (deny_delete_current) {
                        case DENY_IGNORE:
                                break;