refs.c: remove the_repo from read_ref_at()

diff --git a/builtin/rebase.c b/builtin/rebase.c
index 52114cbf0d9f98d52a5b48d8806019d14b1c7029..c0649093298f21f8739370aea96b8bd6af566e61 100644 (file)
--- a/builtin/rebase.c
+++ b/builtin/rebase.c
@@ -369,6 +369,7 @@ static void add_var(struct strbuf *buf, const char *name, const char *value)
 #define RESET_HEAD_HARD (1<<1)
 #define RESET_HEAD_RUN_POST_CHECKOUT_HOOK (1<<2)
 #define RESET_HEAD_REFS_ONLY (1<<3)
+#define RESET_ORIG_HEAD (1<<4)
 
 static int reset_head(struct object_id *oid, const char *action,
                      const char *switch_to_branch, unsigned flags,
@@ -378,6 +379,7 @@ static int reset_head(struct object_id *oid, const char *action,
        unsigned reset_hard = flags & RESET_HEAD_HARD;
        unsigned run_hook = flags & RESET_HEAD_RUN_POST_CHECKOUT_HOOK;
        unsigned refs_only = flags & RESET_HEAD_REFS_ONLY;
+       unsigned update_orig_head = flags & RESET_ORIG_HEAD;
        struct object_id head_oid;
        struct tree_desc desc[2] = { { NULL }, { NULL } };
        struct lock_file lock = LOCK_INIT;
@@ -454,18 +456,21 @@ static int reset_head(struct object_id *oid, const char *action,
        strbuf_addf(&msg, "%s: ", reflog_action ? reflog_action : "rebase");
        prefix_len = msg.len;
 
-       if (!get_oid("ORIG_HEAD", &oid_old_orig))
-               old_orig = &oid_old_orig;
-       if (!get_oid("HEAD", &oid_orig)) {
-               orig = &oid_orig;
-               if (!reflog_orig_head) {
-                       strbuf_addstr(&msg, "updating ORIG_HEAD");
-                       reflog_orig_head = msg.buf;
-               }
-               update_ref(reflog_orig_head, "ORIG_HEAD", orig, old_orig, 0,
-                          UPDATE_REFS_MSG_ON_ERR);
-       } else if (old_orig)
-               delete_ref(NULL, "ORIG_HEAD", old_orig, 0);
+       if (update_orig_head) {
+               if (!get_oid("ORIG_HEAD", &oid_old_orig))
+                       old_orig = &oid_old_orig;
+               if (!get_oid("HEAD", &oid_orig)) {
+                       orig = &oid_orig;
+                       if (!reflog_orig_head) {
+                               strbuf_addstr(&msg, "updating ORIG_HEAD");
+                               reflog_orig_head = msg.buf;
+                       }
+                       update_ref(reflog_orig_head, "ORIG_HEAD", orig,
+                                  old_orig, 0, UPDATE_REFS_MSG_ON_ERR);
+               } else if (old_orig)
+                       delete_ref(NULL, "ORIG_HEAD", old_orig, 0);
+       }
+
        if (!reflog_head) {
                strbuf_setlen(&msg, prefix_len);
                strbuf_addstr(&msg, "updating HEAD");
@@ -476,7 +481,7 @@ static int reset_head(struct object_id *oid, const char *action,
                                 detach_head ? REF_NO_DEREF : 0,
                                 UPDATE_REFS_MSG_ON_ERR);
        else {
-               ret = update_ref(reflog_orig_head, switch_to_branch, oid,
+               ret = update_ref(reflog_head, switch_to_branch, oid,
                                 NULL, 0, UPDATE_REFS_MSG_ON_ERR);
                if (!ret)
                        ret = create_symref("HEAD", switch_to_branch,
@@ -1587,8 +1592,7 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
                                branch_name = options.head_name;
 
                } else {
-                       free(options.head_name);
-                       options.head_name = NULL;
+                       FREE_AND_NULL(options.head_name);
                        branch_name = "HEAD";
                }
                if (get_oid("HEAD", &options.orig_head))
@@ -1777,7 +1781,8 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
        strbuf_addf(&msg, "%s: checkout %s",
                    getenv(GIT_REFLOG_ACTION_ENVIRONMENT), options.onto_name);
        if (reset_head(&options.onto->object.oid, "checkout", NULL,
-                      RESET_HEAD_DETACH | RESET_HEAD_RUN_POST_CHECKOUT_HOOK,
+                      RESET_HEAD_DETACH | RESET_ORIG_HEAD | 
+                      RESET_HEAD_RUN_POST_CHECKOUT_HOOK,
                       NULL, msg.buf))
                die(_("Could not detach HEAD"));
        strbuf_release(&msg);
@@ -1787,14 +1792,14 @@ int cmd_rebase(int argc, const char **argv, const char *prefix)
         * we just fast-forwarded.
         */
        strbuf_reset(&msg);
-       if (!oidcmp(&merge_base, &options.orig_head)) {
+       if (oideq(&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);
+               reset_head(NULL, "Fast-forwarded", options.head_name,
+                          RESET_HEAD_REFS_ONLY, "HEAD", msg.buf);
                strbuf_release(&msg);
                ret = !!finish_rebase(&options);
                goto cleanup;