write_index: optionally allow broken null sha1s

diff --git a/builtin/push.c b/builtin/push.c
index 909c34dfda984be86fba2013fedc3fdb10b5e2f1..2d84d10720fad88becdfe957f3770a2c44ac0a8f 100644 (file)
--- a/builtin/push.c
+++ b/builtin/push.c
@@ -113,17 +113,19 @@ static NORETURN int die_push_simple(struct branch *branch, struct remote *remote
            remote->name, branch->name, advice_maybe);
 }
 
+static const char message_detached_head_die[] =
+       N_("You are not currently on a branch.\n"
+          "To push the history leading to the current (detached HEAD)\n"
+          "state now, use\n"
+          "\n"
+          "    git push %s HEAD:<name-of-remote-branch>\n");
+
 static void setup_push_upstream(struct remote *remote, int simple)
 {
        struct strbuf refspec = STRBUF_INIT;
        struct branch *branch = branch_get(NULL);
        if (!branch)
-               die(_("You are not currently on a branch.\n"
-                   "To push the history leading to the current (detached HEAD)\n"
-                   "state now, use\n"
-                   "\n"
-                   "    git push %s HEAD:<name-of-remote-branch>\n"),
-                   remote->name);
+               die(_(message_detached_head_die), remote->name);
        if (!branch->merge_nr || !branch->merge || !branch->remote_name)
                die(_("The current branch %s has no upstream branch.\n"
                    "To push the current branch and set the remote as upstream, use\n"
@@ -173,6 +175,8 @@ static void warn_unspecified_push_default_configuration(void)
 
 static void setup_default_push_refspecs(struct remote *remote)
 {
+       struct branch *branch;
+
        switch (push_default) {
        default:
        case PUSH_DEFAULT_UNSPECIFIED:
@@ -192,7 +196,10 @@ static void setup_default_push_refspecs(struct remote *remote)
                break;
 
        case PUSH_DEFAULT_CURRENT:
-               add_refspec("HEAD");
+               branch = branch_get(NULL);
+               if (!branch)
+                       die(_(message_detached_head_die), remote->name);
+               add_refspec(branch->name);
                break;
 
        case PUSH_DEFAULT_NOTHING: