[PATCH] Documentation: describe short-hand used in fetch/pull.

diff --git a/rev-list.c b/rev-list.c
index 8117caf569cb8b5275075a63506e41f0478abe08..fdb531caf6db4944f0612258697670eb00bc55ce 100644 (file)
--- a/rev-list.c
+++ b/rev-list.c
@@ -8,7 +8,7 @@
 #define SEEN           (1u << 0)
 #define INTERESTING    (1u << 1)
 #define COUNTED                (1u << 2)
-#define SHOWN          (LAST_EPOCH_FLAG << 2)
+#define SHOWN          (1u << 3)
 
 static const char rev_list_usage[] =
        "usage: git-rev-list [OPTION] commit-id <commit-id>\n"
@@ -38,6 +38,7 @@ static enum cmit_fmt commit_format = CMIT_FMT_RAW;
 static int merge_order = 0;
 static int show_breaks = 0;
 static int stop_traversal = 0;
+static int topo_order = 0;
 
 static void show_commit(struct commit *commit)
 {
@@ -69,19 +70,15 @@ static void show_commit(struct commit *commit)
 
 static int filter_commit(struct commit * commit)
 {
-       if (merge_order && stop_traversal && commit->object.flags & BOUNDARY)
+       if (stop_traversal && (commit->object.flags & BOUNDARY))
                return STOP;
        if (commit->object.flags & (UNINTERESTING|SHOWN))
                return CONTINUE;
        if (min_age != -1 && (commit->date > min_age))
                return CONTINUE;
        if (max_age != -1 && (commit->date < max_age)) {
-               if (!merge_order)
-                       return STOP;
-               else {
-                       stop_traversal = 1;
-                       return CONTINUE;
-               }
+               stop_traversal=1;
+               return merge_order?CONTINUE:STOP;
        }
        if (max_count != -1 && !max_count--)
                return STOP;
@@ -206,6 +203,8 @@ static void mark_tree_uninteresting(struct tree *tree)
        if (obj->flags & UNINTERESTING)
                return;
        obj->flags |= UNINTERESTING;
+       if (!has_sha1_file(obj->sha1))
+               return;
        if (parse_tree(tree) < 0)
                die("bad tree %s", sha1_to_hex(obj->sha1));
        entry = tree->entries;
@@ -227,6 +226,17 @@ static void mark_parents_uninteresting(struct commit *commit)
        while (parents) {
                struct commit *commit = parents->item;
                commit->object.flags |= UNINTERESTING;
+
+               /*
+                * A missing commit is ok iff its parent is marked 
+                * uninteresting.
+                *
+                * We just mark such a thing parsed, so that when
+                * it is popped next time around, we won't be trying
+                * to parse it and get an error.
+                */
+               if (!has_sha1_file(commit->object.sha1))
+                       commit->object.parsed = 1;
                parents = parents->next;
        }
 }
@@ -357,12 +367,12 @@ static struct commit *get_commit_reference(const char *name, unsigned int flags)
        /*
         * Tag object? Look what it points to..
         */
-       if (object->type == tag_type) {
+       while (object->type == tag_type) {
                struct tag *tag = (struct tag *) object;
                object->flags |= flags;
                if (tag_objects && !(object->flags & UNINTERESTING))
                        add_pending_object(object, tag->tag);
-               object = tag->tagged;
+               object = parse_object(tag->tagged->sha1);
        }
 
        /*
@@ -374,6 +384,8 @@ static struct commit *get_commit_reference(const char *name, unsigned int flags)
                object->flags |= flags;
                if (parse_commit(commit) < 0)
                        die("unable to parse commit %s", name);
+               if (flags & UNINTERESTING)
+                       mark_parents_uninteresting(commit);
                return commit;
        }
 
@@ -470,6 +482,11 @@ int main(int argc, char **argv)
                        show_breaks = 1;
                        continue;
                }
+               if (!strcmp(arg, "--topo-order")) {
+                       topo_order = 1;
+                       limited = 1;
+                       continue;
+               }
 
                flags = 0;
                if (*arg == '^') {
@@ -482,12 +499,18 @@ int main(int argc, char **argv)
                commit = get_commit_reference(arg, flags);
                if (!commit)
                        continue;
-               insert_by_date(commit, &list);
+               if (commit->object.flags & SEEN)
+                       continue;
+               commit->object.flags |= SEEN;
+               commit_list_insert(commit, &list);
        }
 
        if (!merge_order) {             
+               sort_by_date(&list);
                if (limited)
                        list = limit_list(list);
+               if (topo_order)
+                       sort_in_topological_order(&list);
                show_commit_list(list);
        } else {
                if (sort_list_in_merge_order(list, &process_commit)) {