avoid "write_in_full(fd, buf, len) != len" pattern
[gitweb.git] / revision.c
index d2a6bfcc9e7cb58ad2c8f78ccdc2baeb0c64575e..f032ab2e5c5c73c691338cdaf99d5b3b3d16b674 100644 (file)
@@ -59,10 +59,10 @@ static void mark_tree_contents_uninteresting(struct tree *tree)
        while (tree_entry(&desc, &entry)) {
                switch (object_type(entry.mode)) {
                case OBJ_TREE:
-                       mark_tree_uninteresting(lookup_tree(entry.oid->hash));
+                       mark_tree_uninteresting(lookup_tree(entry.oid));
                        break;
                case OBJ_BLOB:
-                       mark_blob_uninteresting(lookup_blob(entry.oid->hash));
+                       mark_blob_uninteresting(lookup_blob(entry.oid));
                        break;
                default:
                        /* Subproject commit - not in this repository */
@@ -148,16 +148,14 @@ static void add_pending_object_with_path(struct rev_info *revs,
        if (revs->reflog_info && obj->type == OBJ_COMMIT) {
                struct strbuf buf = STRBUF_INIT;
                int len = interpret_branch_name(name, 0, &buf, 0);
-               int st;
 
                if (0 < len && name[len] && buf.len)
                        strbuf_addstr(&buf, name + len);
-               st = add_reflog_for_walk(revs->reflog_info,
-                                        (struct commit *)obj,
-                                        buf.buf[0] ? buf.buf: name);
+               add_reflog_for_walk(revs->reflog_info,
+                                   (struct commit *)obj,
+                                   buf.buf[0] ? buf.buf: name);
                strbuf_release(&buf);
-               if (st)
-                       return;
+               return; /* do not add the commit itself */
        }
        add_object_array_with_path(obj, name, &revs->pending, mode, path);
 }
@@ -177,23 +175,23 @@ void add_pending_object(struct rev_info *revs,
 
 void add_head_to_pending(struct rev_info *revs)
 {
-       unsigned char sha1[20];
+       struct object_id oid;
        struct object *obj;
-       if (get_sha1("HEAD", sha1))
+       if (get_oid("HEAD", &oid))
                return;
-       obj = parse_object(sha1);
+       obj = parse_object(&oid);
        if (!obj)
                return;
        add_pending_object(revs, obj, "HEAD");
 }
 
 static struct object *get_reference(struct rev_info *revs, const char *name,
-                                   const unsigned char *sha1,
+                                   const struct object_id *oid,
                                    unsigned int flags)
 {
        struct object *object;
 
-       object = parse_object(sha1);
+       object = parse_object(oid);
        if (!object) {
                if (revs->ignore_missing)
                        return object;
@@ -203,10 +201,10 @@ static struct object *get_reference(struct rev_info *revs, const char *name,
        return object;
 }
 
-void add_pending_sha1(struct rev_info *revs, const char *name,
-                     const unsigned char *sha1, unsigned int flags)
+void add_pending_oid(struct rev_info *revs, const char *name,
+                     const struct object_id *oid, unsigned int flags)
 {
-       struct object *object = get_reference(revs, name, sha1, flags);
+       struct object *object = get_reference(revs, name, oid, flags);
        add_pending_object(revs, object, name);
 }
 
@@ -228,7 +226,7 @@ static struct commit *handle_commit(struct rev_info *revs,
                        add_pending_object(revs, object, tag->tag);
                if (!tag->tagged)
                        die("bad tag");
-               object = parse_object(tag->tagged->oid.hash);
+               object = parse_object(&tag->tagged->oid);
                if (!object) {
                        if (revs->ignore_missing_links || (flags & UNINTERESTING))
                                return NULL;
@@ -401,8 +399,8 @@ static int tree_difference = REV_TREE_SAME;
 
 static void file_add_remove(struct diff_options *options,
                    int addremove, unsigned mode,
-                   const unsigned char *sha1,
-                   int sha1_valid,
+                   const struct object_id *oid,
+                   int oid_valid,
                    const char *fullpath, unsigned dirty_submodule)
 {
        int diff = addremove == '+' ? REV_TREE_NEW : REV_TREE_OLD;
@@ -414,9 +412,9 @@ static void file_add_remove(struct diff_options *options,
 
 static void file_change(struct diff_options *options,
                 unsigned old_mode, unsigned new_mode,
-                const unsigned char *old_sha1,
-                const unsigned char *new_sha1,
-                int old_sha1_valid, int new_sha1_valid,
+                const struct object_id *old_oid,
+                const struct object_id *new_oid,
+                int old_oid_valid, int new_oid_valid,
                 const char *fullpath,
                 unsigned old_dirty_submodule, unsigned new_dirty_submodule)
 {
@@ -455,7 +453,7 @@ static int rev_compare_tree(struct rev_info *revs,
 
        tree_difference = REV_TREE_SAME;
        DIFF_OPT_CLR(&revs->pruning, HAS_CHANGES);
-       if (diff_tree_sha1(t1->object.oid.hash, t2->object.oid.hash, "",
+       if (diff_tree_oid(&t1->object.oid, &t2->object.oid, "",
                           &revs->pruning) < 0)
                return REV_TREE_DIFFERENT;
        return tree_difference;
@@ -471,7 +469,7 @@ static int rev_same_tree_as_empty(struct rev_info *revs, struct commit *commit)
 
        tree_difference = REV_TREE_SAME;
        DIFF_OPT_CLR(&revs->pruning, HAS_CHANGES);
-       retval = diff_tree_sha1(NULL, t1->object.oid.hash, "", &revs->pruning);
+       retval = diff_tree_oid(NULL, &t1->object.oid, "", &revs->pruning);
 
        return retval >= 0 && (tree_difference == REV_TREE_SAME);
 }
@@ -884,7 +882,7 @@ static void cherry_pick_list(struct commit_list *list, struct rev_info *revs)
 /* How many extra uninteresting commits we want to see.. */
 #define SLOP 5
 
-static int still_interesting(struct commit_list *src, unsigned long date, int slop,
+static int still_interesting(struct commit_list *src, timestamp_t date, int slop,
                             struct commit **interesting_cache)
 {
        /*
@@ -1018,7 +1016,7 @@ static void limit_left_right(struct commit_list *list, struct rev_info *revs)
 static int limit_list(struct rev_info *revs)
 {
        int slop = SLOP;
-       unsigned long date = ~0ul;
+       timestamp_t date = TIME_MAX;
        struct commit_list *list = revs->commits;
        struct commit_list *newlist = NULL;
        struct commit_list **p = &newlist;
@@ -1142,7 +1140,7 @@ int ref_excluded(struct string_list *ref_excludes, const char *path)
        if (!ref_excludes)
                return 0;
        for_each_string_list_item(item, ref_excludes) {
-               if (!wildmatch(item->string, path, 0, NULL))
+               if (!wildmatch(item->string, path, 0))
                        return 1;
        }
        return 0;
@@ -1157,9 +1155,9 @@ static int handle_one_ref(const char *path, const struct object_id *oid,
        if (ref_excluded(cb->all_revs->ref_excludes, path))
            return 0;
 
-       object = get_reference(cb->all_revs, path, oid->hash, cb->all_flags);
+       object = get_reference(cb->all_revs, path, oid, cb->all_flags);
        add_rev_cmdline(cb->all_revs, object, path, REV_CMD_REF, cb->all_flags);
-       add_pending_sha1(cb->all_revs, path, oid->hash, cb->all_flags);
+       add_pending_oid(cb->all_revs, path, oid, cb->all_flags);
        return 0;
 }
 
@@ -1168,6 +1166,7 @@ static void init_all_refs_cb(struct all_refs_cb *cb, struct rev_info *revs,
 {
        cb->all_revs = revs;
        cb->all_flags = flags;
+       revs->rev_input_given = 1;
 }
 
 void clear_ref_exclusion(struct string_list **ref_excludes_p)
@@ -1200,7 +1199,7 @@ static void handle_one_reflog_commit(struct object_id *oid, void *cb_data)
 {
        struct all_refs_cb *cb = cb_data;
        if (!is_null_oid(oid)) {
-               struct object *o = parse_object(oid->hash);
+               struct object *o = parse_object(oid);
                if (o) {
                        o->flags |= cb->all_flags;
                        /* ??? CMDLINEFLAGS ??? */
@@ -1215,7 +1214,7 @@ static void handle_one_reflog_commit(struct object_id *oid, void *cb_data)
 }
 
 static int handle_one_reflog_ent(struct object_id *ooid, struct object_id *noid,
-               const char *email, unsigned long timestamp, int tz,
+               const char *email, timestamp_t timestamp, int tz,
                const char *message, void *cb_data)
 {
        handle_one_reflog_commit(ooid, cb_data);
@@ -1249,7 +1248,7 @@ static void add_cache_tree(struct cache_tree *it, struct rev_info *revs,
        int i;
 
        if (it->entry_count >= 0) {
-               struct tree *tree = lookup_tree(it->sha1);
+               struct tree *tree = lookup_tree(&it->oid);
                add_pending_object_with_path(revs, &tree->object, "",
                                             040000, path->buf);
        }
@@ -1275,7 +1274,7 @@ void add_index_objects_to_pending(struct rev_info *revs, unsigned flags)
                if (S_ISGITLINK(ce->ce_mode))
                        continue;
 
-               blob = lookup_blob(ce->oid.hash);
+               blob = lookup_blob(&ce->oid);
                if (!blob)
                        die("unable to add index blob to traversal");
                add_pending_object_with_path(revs, &blob->object, "",
@@ -1292,7 +1291,7 @@ void add_index_objects_to_pending(struct rev_info *revs, unsigned flags)
 static int add_parents_only(struct rev_info *revs, const char *arg_, int flags,
                            int exclude_parent)
 {
-       unsigned char sha1[20];
+       struct object_id oid;
        struct object *it;
        struct commit *commit;
        struct commit_list *parents;
@@ -1303,17 +1302,17 @@ static int add_parents_only(struct rev_info *revs, const char *arg_, int flags,
                flags ^= UNINTERESTING | BOTTOM;
                arg++;
        }
-       if (get_sha1_committish(arg, sha1))
+       if (get_sha1_committish(arg, oid.hash))
                return 0;
        while (1) {
-               it = get_reference(revs, arg, sha1, 0);
+               it = get_reference(revs, arg, &oid, 0);
                if (!it && revs->ignore_missing)
                        return 0;
                if (it->type != OBJ_TAG)
                        break;
                if (!((struct tag*)it)->tagged)
                        return 0;
-               hashcpy(sha1, ((struct tag*)it)->tagged->oid.hash);
+               oidcpy(&oid, &((struct tag*)it)->tagged->oid);
        }
        if (it->type != OBJ_COMMIT)
                return 0;
@@ -1362,7 +1361,6 @@ void init_revisions(struct rev_info *revs, const char *prefix)
        init_grep_defaults();
        grep_init(&revs->grep_filter, prefix);
        revs->grep_filter.status_only = 1;
-       revs->grep_filter.regflags = REG_NEWLINE;
 
        diff_setup(&revs->diffopt);
        if (prefix && !revs->diffopt.prefix) {
@@ -1389,16 +1387,16 @@ static void prepare_show_merge(struct rev_info *revs)
 {
        struct commit_list *bases;
        struct commit *head, *other;
-       unsigned char sha1[20];
+       struct object_id oid;
        const char **prune = NULL;
        int i, prune_num = 1; /* counting terminating NULL */
 
-       if (get_sha1("HEAD", sha1))
+       if (get_oid("HEAD", &oid))
                die("--merge without HEAD?");
-       head = lookup_commit_or_die(sha1, "HEAD");
-       if (get_sha1("MERGE_HEAD", sha1))
+       head = lookup_commit_or_die(&oid, "HEAD");
+       if (get_oid("MERGE_HEAD", &oid))
                die("--merge without MERGE_HEAD?");
-       other = lookup_commit_or_die(sha1, "MERGE_HEAD");
+       other = lookup_commit_or_die(&oid, "MERGE_HEAD");
        add_pending_object(revs, &head->object, "HEAD");
        add_pending_object(revs, &other->object, "MERGE_HEAD");
        bases = get_merge_bases(head, other);
@@ -1477,8 +1475,8 @@ static int handle_dotdot_1(const char *arg, char *dotdot,
                *dotdot = '\0';
        }
 
-       a_obj = parse_object(a_oid.hash);
-       b_obj = parse_object(b_oid.hash);
+       a_obj = parse_object(&a_oid);
+       b_obj = parse_object(&b_oid);
        if (!a_obj || !b_obj)
                return dotdot_missing(arg, dotdot, revs, symmetric);
 
@@ -1491,8 +1489,8 @@ static int handle_dotdot_1(const char *arg, char *dotdot,
                struct commit *a, *b;
                struct commit_list *exclude;
 
-               a = lookup_commit_reference(a_obj->oid.hash);
-               b = lookup_commit_reference(b_obj->oid.hash);
+               a = lookup_commit_reference(&a_obj->oid);
+               b = lookup_commit_reference(&b_obj->oid);
                if (!a || !b)
                        return dotdot_missing(arg, dotdot, revs, symmetric);
 
@@ -1545,7 +1543,7 @@ int handle_revision_arg(const char *arg_, struct rev_info *revs, int flags, unsi
        struct object_context oc;
        char *mark;
        struct object *object;
-       unsigned char sha1[20];
+       struct object_id oid;
        int local_flags;
        const char *arg = arg_;
        int cant_be_filename = revarg_opt & REVARG_CANNOT_BE_FILENAME;
@@ -1602,11 +1600,11 @@ int handle_revision_arg(const char *arg_, struct rev_info *revs, int flags, unsi
        if (revarg_opt & REVARG_COMMITTISH)
                get_sha1_flags |= GET_SHA1_COMMITTISH;
 
-       if (get_sha1_with_context(arg, get_sha1_flags, sha1, &oc))
+       if (get_sha1_with_context(arg, get_sha1_flags, oid.hash, &oc))
                return revs->ignore_missing ? 0 : -1;
        if (!cant_be_filename)
                verify_non_filename(revs->prefix, arg);
-       object = get_reference(revs, arg, sha1, flags ^ local_flags);
+       object = get_reference(revs, arg, &oid, flags ^ local_flags);
        add_rev_cmdline(revs, object, arg_, REV_CMD_REV, flags ^ local_flags);
        add_pending_object_with_path(revs, object, arg, oc.mode, oc.path);
        free(oc.path);
@@ -1725,8 +1723,8 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
                revs->max_count = atoi(argv[1]);
                revs->no_walk = 0;
                return 2;
-       } else if (starts_with(arg, "-n")) {
-               revs->max_count = atoi(arg + 2);
+       } else if (skip_prefix(arg, "-n", &optarg)) {
+               revs->max_count = atoi(optarg);
                revs->no_walk = 0;
        } else if ((argcount = parse_long_opt("max-age", argv, &optarg))) {
                revs->max_age = atoi(optarg);
@@ -1785,16 +1783,13 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
        } else if (!strcmp(arg, "--author-date-order")) {
                revs->sort_order = REV_SORT_BY_AUTHOR_DATE;
                revs->topo_order = 1;
-       } else if (starts_with(arg, "--early-output")) {
-               int count = 100;
-               switch (arg[14]) {
-               case '=':
-                       count = atoi(arg+15);
-                       /* Fallthrough */
-               case 0:
-                       revs->topo_order = 1;
-                      revs->early_output = count;
-               }
+       } else if (!strcmp(arg, "--early-output")) {
+               revs->early_output = 100;
+               revs->topo_order = 1;
+       } else if (skip_prefix(arg, "--early-output=", &optarg)) {
+               if (strtoul_ui(optarg, 10, &revs->early_output) < 0)
+                       die("'%s': not a non-negative integer", optarg);
+               revs->topo_order = 1;
        } else if (!strcmp(arg, "--parents")) {
                revs->rewrite_parents = 1;
                revs->print_parents = 1;
@@ -1810,13 +1805,13 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
                revs->min_parents = 2;
        } else if (!strcmp(arg, "--no-merges")) {
                revs->max_parents = 1;
-       } else if (starts_with(arg, "--min-parents=")) {
-               revs->min_parents = atoi(arg+14);
-       } else if (starts_with(arg, "--no-min-parents")) {
+       } else if (skip_prefix(arg, "--min-parents=", &optarg)) {
+               revs->min_parents = atoi(optarg);
+       } else if (!strcmp(arg, "--no-min-parents")) {
                revs->min_parents = 0;
-       } else if (starts_with(arg, "--max-parents=")) {
-               revs->max_parents = atoi(arg+14);
-       } else if (starts_with(arg, "--no-max-parents")) {
+       } else if (skip_prefix(arg, "--max-parents=", &optarg)) {
+               revs->max_parents = atoi(optarg);
+       } else if (!strcmp(arg, "--no-max-parents")) {
                revs->max_parents = -1;
        } else if (!strcmp(arg, "--boundary")) {
                revs->boundary = 1;
@@ -1897,14 +1892,15 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
                revs->verbose_header = 1;
                revs->pretty_given = 1;
                get_commit_format(NULL, revs);
-       } else if (starts_with(arg, "--pretty=") || starts_with(arg, "--format=")) {
+       } else if (skip_prefix(arg, "--pretty=", &optarg) ||
+                  skip_prefix(arg, "--format=", &optarg)) {
                /*
                 * Detached form ("--pretty X" as opposed to "--pretty=X")
                 * not allowed, since the argument is optional.
                 */
                revs->verbose_header = 1;
                revs->pretty_given = 1;
-               get_commit_format(arg+9, revs);
+               get_commit_format(optarg, revs);
        } else if (!strcmp(arg, "--expand-tabs")) {
                revs->expand_tabs_in_log = 8;
        } else if (!strcmp(arg, "--no-expand-tabs")) {
@@ -1922,26 +1918,23 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
                revs->show_signature = 1;
        } else if (!strcmp(arg, "--no-show-signature")) {
                revs->show_signature = 0;
-       } else if (!strcmp(arg, "--show-linear-break") ||
-                  starts_with(arg, "--show-linear-break=")) {
-               if (starts_with(arg, "--show-linear-break="))
-                       revs->break_bar = xstrdup(arg + 20);
-               else
-                       revs->break_bar = "                    ..........";
+       } else if (!strcmp(arg, "--show-linear-break")) {
+               revs->break_bar = "                    ..........";
+               revs->track_linear = 1;
+               revs->track_first_time = 1;
+       } else if (skip_prefix(arg, "--show-linear-break=", &optarg)) {
+               revs->break_bar = xstrdup(optarg);
                revs->track_linear = 1;
                revs->track_first_time = 1;
-       } else if (starts_with(arg, "--show-notes=") ||
-                  starts_with(arg, "--notes=")) {
+       } else if (skip_prefix(arg, "--show-notes=", &optarg) ||
+                  skip_prefix(arg, "--notes=", &optarg)) {
                struct strbuf buf = STRBUF_INIT;
                revs->show_notes = 1;
                revs->show_notes_given = 1;
-               if (starts_with(arg, "--show-notes")) {
-                       if (revs->notes_opt.use_default_notes < 0)
-                               revs->notes_opt.use_default_notes = 1;
-                       strbuf_addstr(&buf, arg+13);
-               }
-               else
-                       strbuf_addstr(&buf, arg+8);
+               if (starts_with(arg, "--show-notes=") &&
+                   revs->notes_opt.use_default_notes < 0)
+                       revs->notes_opt.use_default_notes = 1;
+               strbuf_addstr(&buf, optarg);
                expand_notes_ref(&buf);
                string_list_append(&revs->notes_opt.extra_notes_refs,
                                   strbuf_detach(&buf, NULL));
@@ -1978,8 +1971,8 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
                revs->abbrev = 0;
        } else if (!strcmp(arg, "--abbrev")) {
                revs->abbrev = DEFAULT_ABBREV;
-       } else if (starts_with(arg, "--abbrev=")) {
-               revs->abbrev = strtoul(arg + 9, NULL, 10);
+       } else if (skip_prefix(arg, "--abbrev=", &optarg)) {
+               revs->abbrev = strtoul(optarg, NULL, 10);
                if (revs->abbrev < MINIMUM_ABBREV)
                        revs->abbrev = MINIMUM_ABBREV;
                else if (revs->abbrev > 40)
@@ -2026,11 +2019,11 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
        } else if (!strcmp(arg, "--extended-regexp") || !strcmp(arg, "-E")) {
                revs->grep_filter.pattern_type_option = GREP_PATTERN_TYPE_ERE;
        } else if (!strcmp(arg, "--regexp-ignore-case") || !strcmp(arg, "-i")) {
-               revs->grep_filter.regflags |= REG_ICASE;
+               revs->grep_filter.ignore_case = 1;
                DIFF_OPT_SET(&revs->diffopt, PICKAXE_IGNORE_CASE);
        } else if (!strcmp(arg, "--fixed-strings") || !strcmp(arg, "-F")) {
                revs->grep_filter.pattern_type_option = GREP_PATTERN_TYPE_FIXED;
-       } else if (!strcmp(arg, "--perl-regexp")) {
+       } else if (!strcmp(arg, "--perl-regexp") || !strcmp(arg, "-P")) {
                revs->grep_filter.pattern_type_option = GREP_PATTERN_TYPE_PCRE;
        } else if (!strcmp(arg, "--all-match")) {
                revs->grep_filter.all_match = 1;
@@ -2079,7 +2072,7 @@ static int for_each_bisect_ref(const char *submodule, each_ref_fn fn, void *cb_d
        struct strbuf bisect_refs = STRBUF_INIT;
        int status;
        strbuf_addf(&bisect_refs, "refs/bisect/%s", term);
-       status = for_each_ref_in_submodule(submodule, bisect_refs.buf, fn, cb_data);
+       status = for_each_fullref_in_submodule(submodule, bisect_refs.buf, fn, cb_data, 0);
        strbuf_release(&bisect_refs);
        return status;
 }
@@ -2139,20 +2132,20 @@ static int handle_revision_pseudo_opt(const char *submodule,
        } else if ((argcount = parse_long_opt("exclude", argv, &optarg))) {
                add_ref_exclusion(&revs->ref_excludes, optarg);
                return argcount;
-       } else if (starts_with(arg, "--branches=")) {
+       } else if (skip_prefix(arg, "--branches=", &optarg)) {
                struct all_refs_cb cb;
                init_all_refs_cb(&cb, revs, *flags);
-               for_each_glob_ref_in(handle_one_ref, arg + 11, "refs/heads/", &cb);
+               for_each_glob_ref_in(handle_one_ref, optarg, "refs/heads/", &cb);
                clear_ref_exclusion(&revs->ref_excludes);
-       } else if (starts_with(arg, "--tags=")) {
+       } else if (skip_prefix(arg, "--tags=", &optarg)) {
                struct all_refs_cb cb;
                init_all_refs_cb(&cb, revs, *flags);
-               for_each_glob_ref_in(handle_one_ref, arg + 7, "refs/tags/", &cb);
+               for_each_glob_ref_in(handle_one_ref, optarg, "refs/tags/", &cb);
                clear_ref_exclusion(&revs->ref_excludes);
-       } else if (starts_with(arg, "--remotes=")) {
+       } else if (skip_prefix(arg, "--remotes=", &optarg)) {
                struct all_refs_cb cb;
                init_all_refs_cb(&cb, revs, *flags);
-               for_each_glob_ref_in(handle_one_ref, arg + 10, "refs/remotes/", &cb);
+               for_each_glob_ref_in(handle_one_ref, optarg, "refs/remotes/", &cb);
                clear_ref_exclusion(&revs->ref_excludes);
        } else if (!strcmp(arg, "--reflog")) {
                add_reflogs_to_pending(revs, *flags);
@@ -2162,14 +2155,14 @@ static int handle_revision_pseudo_opt(const char *submodule,
                *flags ^= UNINTERESTING | BOTTOM;
        } else if (!strcmp(arg, "--no-walk")) {
                revs->no_walk = REVISION_WALK_NO_WALK_SORTED;
-       } else if (starts_with(arg, "--no-walk=")) {
+       } else if (skip_prefix(arg, "--no-walk=", &optarg)) {
                /*
                 * Detached form ("--no-walk X" as opposed to "--no-walk=X")
                 * not allowed, since the argument is optional.
                 */
-               if (!strcmp(arg + 10, "sorted"))
+               if (!strcmp(optarg, "sorted"))
                        revs->no_walk = REVISION_WALK_NO_WALK_SORTED;
-               else if (!strcmp(arg + 10, "unsorted"))
+               else if (!strcmp(optarg, "unsorted"))
                        revs->no_walk = REVISION_WALK_NO_WALK_UNSORTED;
                else
                        return error("invalid argument to --no-walk");
@@ -2321,13 +2314,13 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, struct s
                opt->tweak(revs, opt);
        if (revs->show_merge)
                prepare_show_merge(revs);
-       if (revs->def && !revs->pending.nr && !got_rev_arg) {
-               unsigned char sha1[20];
+       if (revs->def && !revs->pending.nr && !revs->rev_input_given && !got_rev_arg) {
+               struct object_id oid;
                struct object *object;
                struct object_context oc;
-               if (get_sha1_with_context(revs->def, 0, sha1, &oc))
+               if (get_sha1_with_context(revs->def, 0, oid.hash, &oc))
                        diagnose_missing_default(revs->def);
-               object = get_reference(revs, revs->def, sha1, 0);
+               object = get_reference(revs, revs->def, &oid, 0);
                add_pending_object_with_mode(revs, object, revs->def, oc.mode);
        }
 
@@ -2370,6 +2363,8 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, struct s
 
        if (revs->reverse && revs->reflog_info)
                die("cannot combine --reverse with --walk-reflogs");
+       if (revs->reflog_info && revs->limited)
+               die("cannot combine --walk-reflogs with history-limiting options");
        if (revs->rewrite_parents && revs->children.name)
                die("cannot combine --parents and --children");
 
@@ -2943,7 +2938,7 @@ static int commit_match(struct commit *commit, struct rev_info *opt)
        if (opt->show_notes) {
                if (!buf.len)
                        strbuf_addstr(&buf, message);
-               format_display_notes(commit->object.oid.hash, &buf, encoding, 1);
+               format_display_notes(&commit->object.oid, &buf, encoding, 1);
        }
 
        /*
@@ -2969,6 +2964,18 @@ static inline int want_ancestry(const struct rev_info *revs)
        return (revs->rewrite_parents || revs->children.name);
 }
 
+/*
+ * Return a timestamp to be used for --since/--until comparisons for this
+ * commit, based on the revision options.
+ */
+static timestamp_t comparison_date(const struct rev_info *revs,
+                                  struct commit *commit)
+{
+       return revs->reflog_info ?
+               get_reflog_timestamp(revs->reflog_info) :
+               commit->date;
+}
+
 enum commit_action get_commit_action(struct rev_info *revs, struct commit *commit)
 {
        if (commit->object.flags & SHOWN)
@@ -2979,8 +2986,9 @@ enum commit_action get_commit_action(struct rev_info *revs, struct commit *commi
                return commit_show;
        if (commit->object.flags & UNINTERESTING)
                return commit_ignore;
-       if (revs->min_age != -1 && (commit->date > revs->min_age))
-               return commit_ignore;
+       if (revs->min_age != -1 &&
+           comparison_date(revs, commit) > revs->min_age)
+                       return commit_ignore;
        if (revs->min_parents || (revs->max_parents >= 0)) {
                int n = commit_list_count(commit->parents);
                if ((n < revs->min_parents) ||
@@ -3113,17 +3121,19 @@ static void track_linear(struct rev_info *revs, struct commit *commit)
 
 static struct commit *get_revision_1(struct rev_info *revs)
 {
-       if (!revs->commits)
-               return NULL;
+       while (1) {
+               struct commit *commit;
 
-       do {
-               struct commit *commit = pop_commit(&revs->commits);
+               if (revs->reflog_info)
+                       commit = next_reflog_entry(revs->reflog_info);
+               else
+                       commit = pop_commit(&revs->commits);
 
-               if (revs->reflog_info) {
-                       save_parents(revs, commit);
-                       fake_reflog_parent(revs->reflog_info, commit);
+               if (!commit)
+                       return NULL;
+
+               if (revs->reflog_info)
                        commit->object.flags &= ~(ADDED | SEEN | SHOWN);
-               }
 
                /*
                 * If we haven't done the list limiting, we need to look at
@@ -3132,9 +3142,12 @@ static struct commit *get_revision_1(struct rev_info *revs)
                 */
                if (!revs->limited) {
                        if (revs->max_age != -1 &&
-                           (commit->date < revs->max_age))
+                           comparison_date(revs, commit) < revs->max_age)
                                continue;
-                       if (add_parents_to_list(revs, commit, &revs->commits, NULL) < 0) {
+
+                       if (revs->reflog_info)
+                               try_to_simplify_commit(revs, commit);
+                       else if (add_parents_to_list(revs, commit, &revs->commits, NULL) < 0) {
                                if (!revs->ignore_missing_links)
                                        die("Failed to traverse parents of commit %s",
                                                oid_to_hex(&commit->object.oid));
@@ -3152,8 +3165,7 @@ static struct commit *get_revision_1(struct rev_info *revs)
                                track_linear(revs, commit);
                        return commit;
                }
-       } while (revs->commits);
-       return NULL;
+       }
 }
 
 /*