git-check-attr: Extract a function output_attr()
[gitweb.git] / revision.c
index 3ba6d991f6e9789949c314c2981dfc6b208a6f66..c46cfaa3e4d2f06fd67ccd71c7ba47891796fd60 100644 (file)
@@ -12,6 +12,7 @@
 #include "patch-ids.h"
 #include "decorate.h"
 #include "log-tree.h"
+#include "string-list.h"
 
 volatile show_early_output_fn_t show_early_output;
 
@@ -132,6 +133,8 @@ void mark_parents_uninteresting(struct commit *commit)
 
 static void add_pending_object_with_mode(struct rev_info *revs, struct object *obj, const char *name, unsigned mode)
 {
+       if (!obj)
+               return;
        if (revs->no_walk && (obj->flags & UNINTERESTING))
                revs->no_walk = 0;
        if (revs->reflog_info && obj->type == OBJ_COMMIT) {
@@ -173,8 +176,11 @@ static struct object *get_reference(struct rev_info *revs, const char *name, con
        struct object *object;
 
        object = parse_object(sha1);
-       if (!object)
+       if (!object) {
+               if (revs->ignore_missing)
+                       return object;
                die("bad object %s", name);
+       }
        object->flags |= flags;
        return object;
 }
@@ -322,7 +328,7 @@ static int rev_compare_tree(struct rev_info *revs, struct commit *parent, struct
                 * tagged commit by specifying both --simplify-by-decoration
                 * and pathspec.
                 */
-               if (!revs->prune_data)
+               if (!revs->prune_data.nr)
                        return REV_TREE_SAME;
        }
 
@@ -443,15 +449,15 @@ static void try_to_simplify_commit(struct rev_info *revs, struct commit *commit)
        commit->object.flags |= TREESAME;
 }
 
-static void insert_by_date_cached(struct commit *p, struct commit_list **head,
+static void commit_list_insert_by_date_cached(struct commit *p, struct commit_list **head,
                    struct commit_list *cached_base, struct commit_list **cache)
 {
        struct commit_list *new_entry;
 
        if (cached_base && p->date < cached_base->item->date)
-               new_entry = insert_by_date(p, &cached_base->next);
+               new_entry = commit_list_insert_by_date(p, &cached_base->next);
        else
-               new_entry = insert_by_date(p, head);
+               new_entry = commit_list_insert_by_date(p, head);
 
        if (cache && (!*cache || p->date < (*cache)->item->date))
                *cache = new_entry;
@@ -493,7 +499,7 @@ static int add_parents_to_list(struct rev_info *revs, struct commit *commit,
                        if (p->object.flags & SEEN)
                                continue;
                        p->object.flags |= SEEN;
-                       insert_by_date_cached(p, list, cached_base, cache_ptr);
+                       commit_list_insert_by_date_cached(p, list, cached_base, cache_ptr);
                }
                return 0;
        }
@@ -520,7 +526,7 @@ static int add_parents_to_list(struct rev_info *revs, struct commit *commit,
                p->object.flags |= left_flag;
                if (!(p->object.flags & SEEN)) {
                        p->object.flags |= SEEN;
-                       insert_by_date_cached(p, list, cached_base, cache_ptr);
+                       commit_list_insert_by_date_cached(p, list, cached_base, cache_ptr);
                }
                if (revs->first_parent_only)
                        break;
@@ -534,6 +540,7 @@ static void cherry_pick_list(struct commit_list *list, struct rev_info *revs)
        int left_count = 0, right_count = 0;
        int left_first;
        struct patch_ids ids;
+       unsigned cherry_flag;
 
        /* First count the commits on the left and on the right */
        for (p = list; p; p = p->next) {
@@ -547,13 +554,12 @@ static void cherry_pick_list(struct commit_list *list, struct rev_info *revs)
                        right_count++;
        }
 
+       if (!left_count || !right_count)
+               return;
+
        left_first = left_count < right_count;
        init_patch_ids(&ids);
-       if (revs->diffopt.nr_paths) {
-               ids.diffopts.nr_paths = revs->diffopt.nr_paths;
-               ids.diffopts.paths = revs->diffopt.paths;
-               ids.diffopts.pathlens = revs->diffopt.pathlens;
-       }
+       ids.diffopts.pathspec = revs->diffopt.pathspec;
 
        /* Compute patch-ids for one side */
        for (p = list; p; p = p->next) {
@@ -572,6 +578,9 @@ static void cherry_pick_list(struct commit_list *list, struct rev_info *revs)
                commit->util = add_commit_patch_id(commit, &ids);
        }
 
+       /* either cherry_mark or cherry_pick are true */
+       cherry_flag = revs->cherry_mark ? PATCHSAME : SHOWN;
+
        /* Check the other side */
        for (p = list; p; p = p->next) {
                struct commit *commit = p->item;
@@ -594,7 +603,7 @@ static void cherry_pick_list(struct commit_list *list, struct rev_info *revs)
                if (!id)
                        continue;
                id->seen = 1;
-               commit->object.flags |= SHOWN;
+               commit->object.flags |= cherry_flag;
        }
 
        /* Now check the original side for seen ones */
@@ -606,7 +615,7 @@ static void cherry_pick_list(struct commit_list *list, struct rev_info *revs)
                if (!ent)
                        continue;
                if (ent->seen)
-                       commit->object.flags |= SHOWN;
+                       commit->object.flags |= cherry_flag;
                commit->util = NULL;
        }
 
@@ -642,6 +651,110 @@ static int still_interesting(struct commit_list *src, unsigned long date, int sl
        return slop-1;
 }
 
+/*
+ * "rev-list --ancestry-path A..B" computes commits that are ancestors
+ * of B but not ancestors of A but further limits the result to those
+ * that are descendants of A.  This takes the list of bottom commits and
+ * the result of "A..B" without --ancestry-path, and limits the latter
+ * further to the ones that can reach one of the commits in "bottom".
+ */
+static void limit_to_ancestry(struct commit_list *bottom, struct commit_list *list)
+{
+       struct commit_list *p;
+       struct commit_list *rlist = NULL;
+       int made_progress;
+
+       /*
+        * Reverse the list so that it will be likely that we would
+        * process parents before children.
+        */
+       for (p = list; p; p = p->next)
+               commit_list_insert(p->item, &rlist);
+
+       for (p = bottom; p; p = p->next)
+               p->item->object.flags |= TMP_MARK;
+
+       /*
+        * Mark the ones that can reach bottom commits in "list",
+        * in a bottom-up fashion.
+        */
+       do {
+               made_progress = 0;
+               for (p = rlist; p; p = p->next) {
+                       struct commit *c = p->item;
+                       struct commit_list *parents;
+                       if (c->object.flags & (TMP_MARK | UNINTERESTING))
+                               continue;
+                       for (parents = c->parents;
+                            parents;
+                            parents = parents->next) {
+                               if (!(parents->item->object.flags & TMP_MARK))
+                                       continue;
+                               c->object.flags |= TMP_MARK;
+                               made_progress = 1;
+                               break;
+                       }
+               }
+       } while (made_progress);
+
+       /*
+        * NEEDSWORK: decide if we want to remove parents that are
+        * not marked with TMP_MARK from commit->parents for commits
+        * in the resulting list.  We may not want to do that, though.
+        */
+
+       /*
+        * The ones that are not marked with TMP_MARK are uninteresting
+        */
+       for (p = list; p; p = p->next) {
+               struct commit *c = p->item;
+               if (c->object.flags & TMP_MARK)
+                       continue;
+               c->object.flags |= UNINTERESTING;
+       }
+
+       /* We are done with the TMP_MARK */
+       for (p = list; p; p = p->next)
+               p->item->object.flags &= ~TMP_MARK;
+       for (p = bottom; p; p = p->next)
+               p->item->object.flags &= ~TMP_MARK;
+       free_commit_list(rlist);
+}
+
+/*
+ * Before walking the history, keep the set of "negative" refs the
+ * caller has asked to exclude.
+ *
+ * This is used to compute "rev-list --ancestry-path A..B", as we need
+ * to filter the result of "A..B" further to the ones that can actually
+ * reach A.
+ */
+static struct commit_list *collect_bottom_commits(struct commit_list *list)
+{
+       struct commit_list *elem, *bottom = NULL;
+       for (elem = list; elem; elem = elem->next)
+               if (elem->item->object.flags & UNINTERESTING)
+                       commit_list_insert(elem->item, &bottom);
+       return bottom;
+}
+
+/* Assumes either left_only or right_only is set */
+static void limit_left_right(struct commit_list *list, struct rev_info *revs)
+{
+       struct commit_list *p;
+
+       for (p = list; p; p = p->next) {
+               struct commit *commit = p->item;
+
+               if (revs->right_only) {
+                       if (commit->object.flags & SYMMETRIC_LEFT)
+                               commit->object.flags |= SHOWN;
+               } else  /* revs->left_only is set */
+                       if (!(commit->object.flags & SYMMETRIC_LEFT))
+                               commit->object.flags |= SHOWN;
+       }
+}
+
 static int limit_list(struct rev_info *revs)
 {
        int slop = SLOP;
@@ -649,6 +762,13 @@ static int limit_list(struct rev_info *revs)
        struct commit_list *list = revs->commits;
        struct commit_list *newlist = NULL;
        struct commit_list **p = &newlist;
+       struct commit_list *bottom = NULL;
+
+       if (revs->ancestry_path) {
+               bottom = collect_bottom_commits(list);
+               if (!bottom)
+                       die("--ancestry-path given but there are no bottom commits");
+       }
 
        while (list) {
                struct commit_list *entry = list;
@@ -687,9 +807,17 @@ static int limit_list(struct rev_info *revs)
                show(revs, newlist);
                show_early_output = NULL;
        }
-       if (revs->cherry_pick)
+       if (revs->cherry_pick || revs->cherry_mark)
                cherry_pick_list(newlist, revs);
 
+       if (revs->left_only || revs->right_only)
+               limit_left_right(newlist, revs);
+
+       if (bottom) {
+               limit_to_ancestry(bottom, newlist);
+               free_commit_list(bottom);
+       }
+
        revs->commits = newlist;
        return 0;
 }
@@ -717,12 +845,12 @@ static void init_all_refs_cb(struct all_refs_cb *cb, struct rev_info *revs,
        cb->all_flags = flags;
 }
 
-static void handle_refs(struct rev_info *revs, unsigned flags,
-               int (*for_each)(each_ref_fn, void *))
+static void handle_refs(const char *submodule, struct rev_info *revs, unsigned flags,
+               int (*for_each)(const char *, each_ref_fn, void *))
 {
        struct all_refs_cb cb;
        init_all_refs_cb(&cb, revs, flags);
-       for_each(handle_one_ref, &cb);
+       for_each(submodule, handle_one_ref, &cb);
 }
 
 static void handle_one_reflog_commit(unsigned char *sha1, void *cb_data)
@@ -783,6 +911,8 @@ static int add_parents_only(struct rev_info *revs, const char *arg, int flags)
                return 0;
        while (1) {
                it = get_reference(revs, arg, sha1, 0);
+               if (!it && revs->ignore_missing)
+                       return 0;
                if (it->type != OBJ_TAG)
                        break;
                if (!((struct tag*)it)->tagged)
@@ -818,11 +948,13 @@ void init_revisions(struct rev_info *revs, const char *prefix)
        revs->min_age = -1;
        revs->skip_count = -1;
        revs->max_count = -1;
+       revs->max_parents = -1;
 
        revs->commit_format = CMIT_FMT_DEFAULT;
 
        revs->grep_filter.status_only = 1;
        revs->grep_filter.pattern_tail = &(revs->grep_filter.pattern_list);
+       revs->grep_filter.header_tail = &(revs->grep_filter.header_list);
        revs->grep_filter.regflags = REG_NEWLINE;
 
        diff_setup(&revs->diffopt);
@@ -830,6 +962,8 @@ void init_revisions(struct rev_info *revs, const char *prefix)
                revs->diffopt.prefix = prefix;
                revs->diffopt.prefix_length = strlen(prefix);
        }
+
+       revs->notes_opt.use_default_notes = -1;
 }
 
 static void add_pending_commit_list(struct rev_info *revs,
@@ -869,7 +1003,7 @@ static void prepare_show_merge(struct rev_info *revs)
                struct cache_entry *ce = active_cache[i];
                if (!ce_stage(ce))
                        continue;
-               if (ce_path_match(ce, revs->prune_data)) {
+               if (ce_path_match(ce, &revs->prune_data)) {
                        prune_num++;
                        prune = xrealloc(prune, sizeof(*prune) * prune_num);
                        prune[prune_num-2] = ce->name;
@@ -879,7 +1013,8 @@ static void prepare_show_merge(struct rev_info *revs)
                       ce_same_name(ce, active_cache[i+1]))
                        i++;
        }
-       revs->prune_data = prune;
+       free_pathspec(&revs->prune_data);
+       init_pathspec(&revs->prune_data, prune);
        revs->limited = 1;
 }
 
@@ -916,6 +1051,8 @@ int handle_revision_arg(const char *arg, struct rev_info *revs,
                        a = lookup_commit_reference(from_sha1);
                        b = lookup_commit_reference(sha1);
                        if (!a || !b) {
+                               if (revs->ignore_missing)
+                                       return 0;
                                die(symmetric ?
                                    "Invalid symmetric difference expression %s...%s" :
                                    "Invalid revision range %s..%s",
@@ -962,7 +1099,7 @@ int handle_revision_arg(const char *arg, struct rev_info *revs,
                arg++;
        }
        if (get_sha1_with_mode(arg, sha1, &mode))
-               return -1;
+               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);
@@ -970,35 +1107,34 @@ int handle_revision_arg(const char *arg, struct rev_info *revs,
        return 0;
 }
 
-static void read_pathspec_from_stdin(struct rev_info *revs, struct strbuf *sb, const char ***prune_data)
-{
-       const char **prune = *prune_data;
-       int prune_nr;
-       int prune_alloc;
+struct cmdline_pathspec {
+       int alloc;
+       int nr;
+       const char **path;
+};
 
-       /* count existing ones */
-       if (!prune)
-               prune_nr = 0;
-       else
-               for (prune_nr = 0; prune[prune_nr]; prune_nr++)
-                       ;
-       prune_alloc = prune_nr; /* not really, but we do not know */
+static void append_prune_data(struct cmdline_pathspec *prune, const char **av)
+{
+       while (*av) {
+               ALLOC_GROW(prune->path, prune->nr+1, prune->alloc);
+               prune->path[prune->nr++] = *(av++);
+       }
+}
 
+static void read_pathspec_from_stdin(struct rev_info *revs, struct strbuf *sb,
+                                    struct cmdline_pathspec *prune)
+{
        while (strbuf_getwholeline(sb, stdin, '\n') != EOF) {
                int len = sb->len;
                if (len && sb->buf[len - 1] == '\n')
                        sb->buf[--len] = '\0';
-               ALLOC_GROW(prune, prune_nr+1, prune_alloc);
-               prune[prune_nr++] = xstrdup(sb->buf);
-       }
-       if (prune) {
-               ALLOC_GROW(prune, prune_nr+1, prune_alloc);
-               prune[prune_nr] = NULL;
+               ALLOC_GROW(prune->path, prune->nr+1, prune->alloc);
+               prune->path[prune->nr++] = xstrdup(sb->buf);
        }
-       *prune_data = prune;
 }
 
-static void read_revisions_from_stdin(struct rev_info *revs, const char ***prune)
+static void read_revisions_from_stdin(struct rev_info *revs,
+                                     struct cmdline_pathspec *prune)
 {
        struct strbuf sb;
        int seen_dashdash = 0;
@@ -1044,46 +1180,66 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
                               int *unkc, const char **unkv)
 {
        const char *arg = argv[0];
+       const char *optarg;
+       int argcount;
 
        /* pseudo revision arguments */
        if (!strcmp(arg, "--all") || !strcmp(arg, "--branches") ||
            !strcmp(arg, "--tags") || !strcmp(arg, "--remotes") ||
            !strcmp(arg, "--reflog") || !strcmp(arg, "--not") ||
            !strcmp(arg, "--no-walk") || !strcmp(arg, "--do-walk") ||
-           !strcmp(arg, "--bisect"))
+           !strcmp(arg, "--bisect") || !prefixcmp(arg, "--glob=") ||
+           !prefixcmp(arg, "--branches=") || !prefixcmp(arg, "--tags=") ||
+           !prefixcmp(arg, "--remotes="))
        {
                unkv[(*unkc)++] = arg;
                return 1;
        }
 
-       if (!prefixcmp(arg, "--max-count=")) {
-               revs->max_count = atoi(arg + 12);
-       } else if (!prefixcmp(arg, "--skip=")) {
-               revs->skip_count = atoi(arg + 7);
+       if ((argcount = parse_long_opt("max-count", argv, &optarg))) {
+               revs->max_count = atoi(optarg);
+               revs->no_walk = 0;
+               return argcount;
+       } else if ((argcount = parse_long_opt("skip", argv, &optarg))) {
+               revs->skip_count = atoi(optarg);
+               return argcount;
        } else if ((*arg == '-') && isdigit(arg[1])) {
        /* accept -<digit>, like traditional "head" */
                revs->max_count = atoi(arg + 1);
+               revs->no_walk = 0;
        } else if (!strcmp(arg, "-n")) {
                if (argc <= 1)
                        return error("-n requires an argument");
                revs->max_count = atoi(argv[1]);
+               revs->no_walk = 0;
                return 2;
        } else if (!prefixcmp(arg, "-n")) {
                revs->max_count = atoi(arg + 2);
-       } else if (!prefixcmp(arg, "--max-age=")) {
-               revs->max_age = atoi(arg + 10);
-       } else if (!prefixcmp(arg, "--since=")) {
-               revs->max_age = approxidate(arg + 8);
-       } else if (!prefixcmp(arg, "--after=")) {
-               revs->max_age = approxidate(arg + 8);
-       } else if (!prefixcmp(arg, "--min-age=")) {
-               revs->min_age = atoi(arg + 10);
-       } else if (!prefixcmp(arg, "--before=")) {
-               revs->min_age = approxidate(arg + 9);
-       } else if (!prefixcmp(arg, "--until=")) {
-               revs->min_age = approxidate(arg + 8);
+               revs->no_walk = 0;
+       } else if ((argcount = parse_long_opt("max-age", argv, &optarg))) {
+               revs->max_age = atoi(optarg);
+               return argcount;
+       } else if ((argcount = parse_long_opt("since", argv, &optarg))) {
+               revs->max_age = approxidate(optarg);
+               return argcount;
+       } else if ((argcount = parse_long_opt("after", argv, &optarg))) {
+               revs->max_age = approxidate(optarg);
+               return argcount;
+       } else if ((argcount = parse_long_opt("min-age", argv, &optarg))) {
+               revs->min_age = atoi(optarg);
+               return argcount;
+       } else if ((argcount = parse_long_opt("before", argv, &optarg))) {
+               revs->min_age = approxidate(optarg);
+               return argcount;
+       } else if ((argcount = parse_long_opt("until", argv, &optarg))) {
+               revs->min_age = approxidate(optarg);
+               return argcount;
        } else if (!strcmp(arg, "--first-parent")) {
                revs->first_parent_only = 1;
+       } else if (!strcmp(arg, "--ancestry-path")) {
+               revs->ancestry_path = 1;
+               revs->simplify_history = 0;
+               revs->limited = 1;
        } else if (!strcmp(arg, "-g") || !strcmp(arg, "--walk-reflogs")) {
                init_reflog_walk(&revs->reflog_info);
        } else if (!strcmp(arg, "--default")) {
@@ -1134,14 +1290,47 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
        } else if (!strcmp(arg, "--remove-empty")) {
                revs->remove_empty_trees = 1;
        } else if (!strcmp(arg, "--merges")) {
-               revs->merges_only = 1;
+               revs->min_parents = 2;
        } else if (!strcmp(arg, "--no-merges")) {
-               revs->no_merges = 1;
+               revs->max_parents = 1;
+       } else if (!prefixcmp(arg, "--min-parents=")) {
+               revs->min_parents = atoi(arg+14);
+       } else if (!prefixcmp(arg, "--no-min-parents")) {
+               revs->min_parents = 0;
+       } else if (!prefixcmp(arg, "--max-parents=")) {
+               revs->max_parents = atoi(arg+14);
+       } else if (!prefixcmp(arg, "--no-max-parents")) {
+               revs->max_parents = -1;
        } else if (!strcmp(arg, "--boundary")) {
                revs->boundary = 1;
        } else if (!strcmp(arg, "--left-right")) {
                revs->left_right = 1;
+       } else if (!strcmp(arg, "--left-only")) {
+               if (revs->right_only)
+                       die("--left-only is incompatible with --right-only"
+                           " or --cherry");
+               revs->left_only = 1;
+       } else if (!strcmp(arg, "--right-only")) {
+               if (revs->left_only)
+                       die("--right-only is incompatible with --left-only");
+               revs->right_only = 1;
+       } else if (!strcmp(arg, "--cherry")) {
+               if (revs->left_only)
+                       die("--cherry is incompatible with --left-only");
+               revs->cherry_mark = 1;
+               revs->right_only = 1;
+               revs->max_parents = 1;
+               revs->limited = 1;
+       } else if (!strcmp(arg, "--count")) {
+               revs->count = 1;
+       } else if (!strcmp(arg, "--cherry-mark")) {
+               if (revs->cherry_pick)
+                       die("--cherry-mark is incompatible with --cherry-pick");
+               revs->cherry_mark = 1;
+               revs->limited = 1; /* needs limit_list() */
        } else if (!strcmp(arg, "--cherry-pick")) {
+               if (revs->cherry_mark)
+                       die("--cherry-pick is incompatible with --cherry-mark");
                revs->cherry_pick = 1;
                revs->limited = 1;
        } else if (!strcmp(arg, "--objects")) {
@@ -1181,15 +1370,46 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
                revs->pretty_given = 1;
                get_commit_format(arg+8, revs);
        } else if (!prefixcmp(arg, "--pretty=") || !prefixcmp(arg, "--format=")) {
+               /*
+                * 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);
-       } else if (!strcmp(arg, "--show-notes")) {
+       } else if (!strcmp(arg, "--show-notes") || !strcmp(arg, "--notes")) {
                revs->show_notes = 1;
                revs->show_notes_given = 1;
+               revs->notes_opt.use_default_notes = 1;
+       } else if (!prefixcmp(arg, "--show-notes=") ||
+                  !prefixcmp(arg, "--notes=")) {
+               struct strbuf buf = STRBUF_INIT;
+               revs->show_notes = 1;
+               revs->show_notes_given = 1;
+               if (!prefixcmp(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);
+               expand_notes_ref(&buf);
+               string_list_append(&revs->notes_opt.extra_notes_refs,
+                                  strbuf_detach(&buf, NULL));
        } else if (!strcmp(arg, "--no-notes")) {
                revs->show_notes = 0;
                revs->show_notes_given = 1;
+               revs->notes_opt.use_default_notes = -1;
+               /* we have been strdup'ing ourselves, so trick
+                * string_list into free()ing strings */
+               revs->notes_opt.extra_notes_refs.strdup_strings = 1;
+               string_list_clear(&revs->notes_opt.extra_notes_refs, 0);
+               revs->notes_opt.extra_notes_refs.strdup_strings = 0;
+       } else if (!strcmp(arg, "--standard-notes")) {
+               revs->show_notes_given = 1;
+               revs->notes_opt.use_default_notes = 1;
+       } else if (!strcmp(arg, "--no-standard-notes")) {
+               revs->notes_opt.use_default_notes = 0;
        } else if (!strcmp(arg, "--oneline")) {
                revs->verbose_header = 1;
                get_commit_format("oneline", revs);
@@ -1217,6 +1437,9 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
                        revs->abbrev = 40;
        } else if (!strcmp(arg, "--abbrev-commit")) {
                revs->abbrev_commit = 1;
+               revs->abbrev_commit_given = 1;
+       } else if (!strcmp(arg, "--no-abbrev-commit")) {
+               revs->abbrev_commit = 0;
        } else if (!strcmp(arg, "--full-diff")) {
                revs->diff = 1;
                revs->full_diff = 1;
@@ -1225,21 +1448,25 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
        } else if (!strcmp(arg, "--relative-date")) {
                revs->date_mode = DATE_RELATIVE;
                revs->date_mode_explicit = 1;
-       } else if (!strncmp(arg, "--date=", 7)) {
-               revs->date_mode = parse_date_format(arg + 7);
+       } else if ((argcount = parse_long_opt("date", argv, &optarg))) {
+               revs->date_mode = parse_date_format(optarg);
                revs->date_mode_explicit = 1;
+               return argcount;
        } else if (!strcmp(arg, "--log-size")) {
                revs->show_log_size = 1;
        }
        /*
         * Grepping the commit log
         */
-       else if (!prefixcmp(arg, "--author=")) {
-               add_header_grep(revs, GREP_HEADER_AUTHOR, arg+9);
-       } else if (!prefixcmp(arg, "--committer=")) {
-               add_header_grep(revs, GREP_HEADER_COMMITTER, arg+12);
-       } else if (!prefixcmp(arg, "--grep=")) {
-               add_message_grep(revs, arg+7);
+       else if ((argcount = parse_long_opt("author", argv, &optarg))) {
+               add_header_grep(revs, GREP_HEADER_AUTHOR, optarg);
+               return argcount;
+       } else if ((argcount = parse_long_opt("committer", argv, &optarg))) {
+               add_header_grep(revs, GREP_HEADER_COMMITTER, optarg);
+               return argcount;
+       } else if ((argcount = parse_long_opt("grep", argv, &optarg))) {
+               add_message_grep(revs, optarg);
+               return argcount;
        } else if (!strcmp(arg, "--extended-regexp") || !strcmp(arg, "-E")) {
                revs->grep_filter.regflags |= REG_EXTENDED;
        } else if (!strcmp(arg, "--regexp-ignore-case") || !strcmp(arg, "-i")) {
@@ -1248,17 +1475,19 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
                revs->grep_filter.fixed = 1;
        } else if (!strcmp(arg, "--all-match")) {
                revs->grep_filter.all_match = 1;
-       } else if (!prefixcmp(arg, "--encoding=")) {
-               arg += 11;
-               if (strcmp(arg, "none"))
-                       git_log_output_encoding = xstrdup(arg);
+       } else if ((argcount = parse_long_opt("encoding", argv, &optarg))) {
+               if (strcmp(optarg, "none"))
+                       git_log_output_encoding = xstrdup(optarg);
                else
                        git_log_output_encoding = "";
+               return argcount;
        } else if (!strcmp(arg, "--reverse")) {
                revs->reverse ^= 1;
        } else if (!strcmp(arg, "--children")) {
                revs->children.name = "children";
                revs->limited = 1;
+       } else if (!strcmp(arg, "--ignore-missing")) {
+               revs->ignore_missing = 1;
        } else {
                int opts = diff_opt_parse(&revs->diffopt, argv, argc);
                if (!opts)
@@ -1283,42 +1512,77 @@ void parse_revision_opt(struct rev_info *revs, struct parse_opt_ctx_t *ctx,
        ctx->argc -= n;
 }
 
-static int for_each_bad_bisect_ref(each_ref_fn fn, void *cb_data)
+static int for_each_bad_bisect_ref(const char *submodule, each_ref_fn fn, void *cb_data)
 {
-       return for_each_ref_in("refs/bisect/bad", fn, cb_data);
+       return for_each_ref_in_submodule(submodule, "refs/bisect/bad", fn, cb_data);
 }
 
-static int for_each_good_bisect_ref(each_ref_fn fn, void *cb_data)
+static int for_each_good_bisect_ref(const char *submodule, each_ref_fn fn, void *cb_data)
 {
-       return for_each_ref_in("refs/bisect/good", fn, cb_data);
+       return for_each_ref_in_submodule(submodule, "refs/bisect/good", fn, cb_data);
 }
 
-static void append_prune_data(const char ***prune_data, const char **av)
+static int handle_revision_pseudo_opt(const char *submodule,
+                               struct rev_info *revs,
+                               int argc, const char **argv, int *flags)
 {
-       const char **prune = *prune_data;
-       int prune_nr;
-       int prune_alloc;
+       const char *arg = argv[0];
+       const char *optarg;
+       int argcount;
 
-       if (!prune) {
-               *prune_data = av;
-               return;
+       /*
+        * NOTE!
+        *
+        * Commands like "git shortlog" will not accept the options below
+        * unless parse_revision_opt queues them (as opposed to erroring
+        * out).
+        *
+        * When implementing your new pseudo-option, remember to
+        * register it in the list at the top of handle_revision_opt.
+        */
+       if (!strcmp(arg, "--all")) {
+               handle_refs(submodule, revs, *flags, for_each_ref_submodule);
+               handle_refs(submodule, revs, *flags, head_ref_submodule);
+       } else if (!strcmp(arg, "--branches")) {
+               handle_refs(submodule, revs, *flags, for_each_branch_ref_submodule);
+       } else if (!strcmp(arg, "--bisect")) {
+               handle_refs(submodule, revs, *flags, for_each_bad_bisect_ref);
+               handle_refs(submodule, revs, *flags ^ UNINTERESTING, for_each_good_bisect_ref);
+               revs->bisect = 1;
+       } else if (!strcmp(arg, "--tags")) {
+               handle_refs(submodule, revs, *flags, for_each_tag_ref_submodule);
+       } else if (!strcmp(arg, "--remotes")) {
+               handle_refs(submodule, revs, *flags, for_each_remote_ref_submodule);
+       } else if ((argcount = parse_long_opt("glob", argv, &optarg))) {
+               struct all_refs_cb cb;
+               init_all_refs_cb(&cb, revs, *flags);
+               for_each_glob_ref(handle_one_ref, optarg, &cb);
+               return argcount;
+       } else if (!prefixcmp(arg, "--branches=")) {
+               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);
+       } else if (!prefixcmp(arg, "--tags=")) {
+               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);
+       } else if (!prefixcmp(arg, "--remotes=")) {
+               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);
+       } else if (!strcmp(arg, "--reflog")) {
+               handle_reflog(revs, *flags);
+       } else if (!strcmp(arg, "--not")) {
+               *flags ^= UNINTERESTING;
+       } else if (!strcmp(arg, "--no-walk")) {
+               revs->no_walk = 1;
+       } else if (!strcmp(arg, "--do-walk")) {
+               revs->no_walk = 0;
+       } else {
+               return 0;
        }
 
-       /* count existing ones */
-       for (prune_nr = 0; prune[prune_nr]; prune_nr++)
-               ;
-       prune_alloc = prune_nr; /* not really, but we do not know */
-
-       while (*av) {
-               ALLOC_GROW(prune, prune_nr+1, prune_alloc);
-               prune[prune_nr++] = *av;
-               av++;
-       }
-       if (prune) {
-               ALLOC_GROW(prune, prune_nr+1, prune_alloc);
-               prune[prune_nr] = NULL;
-       }
-       *prune_data = prune;
+       return 1;
 }
 
 /*
@@ -1328,10 +1592,15 @@ static void append_prune_data(const char ***prune_data, const char **av)
  * Returns the number of arguments left that weren't recognized
  * (which are also moved to the head of the argument list)
  */
-int setup_revisions(int argc, const char **argv, struct rev_info *revs, const char *def)
+int setup_revisions(int argc, const char **argv, struct rev_info *revs, struct setup_revision_opt *opt)
 {
-       int i, flags, left, seen_dashdash, read_from_stdin;
-       const char **prune_data = NULL;
+       int i, flags, left, seen_dashdash, read_from_stdin, got_rev_arg = 0;
+       struct cmdline_pathspec prune_data;
+       const char *submodule = NULL;
+
+       memset(&prune_data, 0, sizeof(prune_data));
+       if (opt)
+               submodule = opt->submodule;
 
        /* First, search for "--" */
        seen_dashdash = 0;
@@ -1342,7 +1611,7 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
                argv[i] = NULL;
                argc = i;
                if (argv[i + 1])
-                       prune_data = argv + i + 1;
+                       append_prune_data(&prune_data, argv + i + 1);
                seen_dashdash = 1;
                break;
        }
@@ -1355,69 +1624,14 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
                if (*arg == '-') {
                        int opts;
 
-                       if (!strcmp(arg, "--all")) {
-                               handle_refs(revs, flags, for_each_ref);
-                               handle_refs(revs, flags, head_ref);
-                               continue;
-                       }
-                       if (!strcmp(arg, "--branches")) {
-                               handle_refs(revs, flags, for_each_branch_ref);
-                               continue;
-                       }
-                       if (!strcmp(arg, "--bisect")) {
-                               handle_refs(revs, flags, for_each_bad_bisect_ref);
-                               handle_refs(revs, flags ^ UNINTERESTING, for_each_good_bisect_ref);
-                               revs->bisect = 1;
-                               continue;
-                       }
-                       if (!strcmp(arg, "--tags")) {
-                               handle_refs(revs, flags, for_each_tag_ref);
-                               continue;
-                       }
-                       if (!strcmp(arg, "--remotes")) {
-                               handle_refs(revs, flags, for_each_remote_ref);
-                               continue;
-                       }
-                       if (!prefixcmp(arg, "--glob=")) {
-                               struct all_refs_cb cb;
-                               init_all_refs_cb(&cb, revs, flags);
-                               for_each_glob_ref(handle_one_ref, arg + 7, &cb);
-                               continue;
-                       }
-                       if (!prefixcmp(arg, "--branches=")) {
-                               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);
-                               continue;
-                       }
-                       if (!prefixcmp(arg, "--tags=")) {
-                               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);
-                               continue;
-                       }
-                       if (!prefixcmp(arg, "--remotes=")) {
-                               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);
-                               continue;
-                       }
-                       if (!strcmp(arg, "--reflog")) {
-                               handle_reflog(revs, flags);
-                               continue;
-                       }
-                       if (!strcmp(arg, "--not")) {
-                               flags ^= UNINTERESTING;
-                               continue;
-                       }
-                       if (!strcmp(arg, "--no-walk")) {
-                               revs->no_walk = 1;
-                               continue;
-                       }
-                       if (!strcmp(arg, "--do-walk")) {
-                               revs->no_walk = 0;
+                       opts = handle_revision_pseudo_opt(submodule,
+                                               revs, argc - i, argv + i,
+                                               &flags);
+                       if (opts > 0) {
+                               i += opts - 1;
                                continue;
                        }
+
                        if (!strcmp(arg, "--stdin")) {
                                if (revs->disable_stdin) {
                                        argv[left++] = arg;
@@ -1456,16 +1670,38 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
                        append_prune_data(&prune_data, argv + i);
                        break;
                }
+               else
+                       got_rev_arg = 1;
        }
 
-       if (prune_data)
-               revs->prune_data = get_pathspec(revs->prefix, prune_data);
+       if (prune_data.nr) {
+               /*
+                * If we need to introduce the magic "a lone ':' means no
+                * pathspec whatsoever", here is the place to do so.
+                *
+                * if (prune_data.nr == 1 && !strcmp(prune_data[0], ":")) {
+                *      prune_data.nr = 0;
+                *      prune_data.alloc = 0;
+                *      free(prune_data.path);
+                *      prune_data.path = NULL;
+                * } else {
+                *      terminate prune_data.alloc with NULL and
+                *      call init_pathspec() to set revs->prune_data here.
+                * }
+                */
+               ALLOC_GROW(prune_data.path, prune_data.nr+1, prune_data.alloc);
+               prune_data.path[prune_data.nr++] = NULL;
+               init_pathspec(&revs->prune_data,
+                             get_pathspec(revs->prefix, prune_data.path));
+       }
 
        if (revs->def == NULL)
-               revs->def = def;
+               revs->def = opt ? opt->def : NULL;
+       if (opt && opt->tweak)
+               opt->tweak(revs, opt);
        if (revs->show_merge)
                prepare_show_merge(revs);
-       if (revs->def && !revs->pending.nr) {
+       if (revs->def && !revs->pending.nr && !got_rev_arg) {
                unsigned char sha1[20];
                struct object *object;
                unsigned mode;
@@ -1488,19 +1724,16 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
        if (revs->topo_order)
                revs->limited = 1;
 
-       if (revs->prune_data) {
-               diff_tree_setup_paths(revs->prune_data, &revs->pruning);
+       if (revs->prune_data.nr) {
+               diff_tree_setup_paths(revs->prune_data.raw, &revs->pruning);
                /* Can't prune commits with rename following: the paths change.. */
                if (!DIFF_OPT_TST(&revs->diffopt, FOLLOW_RENAMES))
                        revs->prune = 1;
                if (!revs->full_diff)
-                       diff_tree_setup_paths(revs->prune_data, &revs->diffopt);
+                       diff_tree_setup_paths(revs->prune_data.raw, &revs->diffopt);
        }
-       if (revs->combine_merges) {
+       if (revs->combine_merges)
                revs->ignore_merges = 0;
-               if (revs->dense_combined_merges && !revs->diffopt.output_format)
-                       revs->diffopt.output_format = DIFF_FORMAT_PATCH;
-       }
        revs->diffopt.abbrev = revs->abbrev;
        if (diff_setup_done(&revs->diffopt) < 0)
                die("diff_setup_done failed");
@@ -1731,7 +1964,7 @@ int prepare_revision_walk(struct rev_info *revs)
                if (commit) {
                        if (!(commit->object.flags & SEEN)) {
                                commit->object.flags |= SEEN;
-                               insert_by_date(commit, &revs->commits);
+                               commit_list_insert_by_date(commit, &revs->commits);
                        }
                }
                e++;
@@ -1755,7 +1988,7 @@ int prepare_revision_walk(struct rev_info *revs)
 enum rewrite_result {
        rewrite_one_ok,
        rewrite_one_noparents,
-       rewrite_one_error,
+       rewrite_one_error
 };
 
 static enum rewrite_result rewrite_one(struct rev_info *revs, struct commit **pp)
@@ -1801,7 +2034,7 @@ static int rewrite_parents(struct rev_info *revs, struct commit *commit)
 
 static int commit_match(struct commit *commit, struct rev_info *opt)
 {
-       if (!opt->grep_filter.pattern_list)
+       if (!opt->grep_filter.pattern_list && !opt->grep_filter.header_list)
                return 1;
        return grep_buffer(&opt->grep_filter,
                           NULL, /* we say nothing, not even filename */
@@ -1825,10 +2058,15 @@ enum commit_action get_commit_action(struct rev_info *revs, struct commit *commi
                return commit_ignore;
        if (revs->min_age != -1 && (commit->date > revs->min_age))
                return commit_ignore;
-       if (revs->no_merges && commit->parents && commit->parents->next)
-               return commit_ignore;
-       if (revs->merges_only && !(commit->parents && commit->parents->next))
-               return commit_ignore;
+       if (revs->min_parents || (revs->max_parents >= 0)) {
+               int n = 0;
+               struct commit_list *p;
+               for (p = commit->parents; p; p = p->next)
+                       n++;
+               if ((n < revs->min_parents) ||
+                   ((revs->max_parents >= 0) && (n > revs->max_parents)))
+                       return commit_ignore;
+       }
        if (!commit_match(commit, revs))
                return commit_ignore;
        if (revs->prune && revs->dense) {
@@ -1870,8 +2108,10 @@ static struct commit *get_revision_1(struct rev_info *revs)
                revs->commits = entry->next;
                free(entry);
 
-               if (revs->reflog_info)
+               if (revs->reflog_info) {
                        fake_reflog_parent(revs->reflog_info, commit);
+                       commit->object.flags &= ~(ADDED | SEEN | SHOWN);
+               }
 
                /*
                 * If we haven't done the list limiting, we need to look at
@@ -2073,3 +2313,32 @@ struct commit *get_revision(struct rev_info *revs)
                graph_update(revs->graph, c);
        return c;
 }
+
+char *get_revision_mark(const struct rev_info *revs, const struct commit *commit)
+{
+       if (commit->object.flags & BOUNDARY)
+               return "-";
+       else if (commit->object.flags & UNINTERESTING)
+               return "^";
+       else if (commit->object.flags & PATCHSAME)
+               return "=";
+       else if (!revs || revs->left_right) {
+               if (commit->object.flags & SYMMETRIC_LEFT)
+                       return "<";
+               else
+                       return ">";
+       } else if (revs->graph)
+               return "*";
+       else if (revs->cherry_mark)
+               return "+";
+       return "";
+}
+
+void put_revision_mark(const struct rev_info *revs, const struct commit *commit)
+{
+       char *mark = get_revision_mark(revs, commit);
+       if (!strlen(mark))
+               return;
+       fputs(mark, stdout);
+       putchar(' ');
+}