fmt-patch: Support --attach

[git.git] / revision.c

diff --git a/revision.c b/revision.c
index b6ed014..2294b16 100644 (file)
--- a/revision.c
+++ b/revision.c
@@ -477,6 +477,36 @@ static void handle_all(struct rev_info *revs, unsigned flags)
        for_each_ref(handle_one_ref);
 }
 
+static int add_parents_only(struct rev_info *revs, const char *arg, int flags)
+{
+       unsigned char sha1[20];
+       struct object *it;
+       struct commit *commit;
+       struct commit_list *parents;
+
+       if (*arg == '^') {
+               flags ^= UNINTERESTING;
+               arg++;
+       }
+       if (get_sha1(arg, sha1))
+               return 0;
+       while (1) {
+               it = get_reference(revs, arg, sha1, 0);
+               if (strcmp(it->type, tag_type))
+                       break;
+               memcpy(sha1, ((struct tag*)it)->tagged->sha1, 20);
+       }
+       if (strcmp(it->type, commit_type))
+               return 0;
+       commit = (struct commit *)it;
+       for (parents = commit->parents; parents; parents = parents->next) {
+               it = &parents->item->object;
+               it->flags |= flags;
+               add_pending_object(revs, it, arg);
+       }
+       return 1;
+}
+
 void init_revisions(struct rev_info *revs)
 {
        memset(revs, 0, sizeof(*revs));
@@ -544,7 +574,7 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
                                revs->max_count = atoi(arg + 12);
                                continue;
                        }
-                       /* accept -<digit>, like traditilnal "head" */
+                       /* accept -<digit>, like traditional "head" */
                        if ((*arg == '-') && isdigit(arg[1])) {
                                revs->max_count = atoi(arg + 1);
                                continue;
@@ -664,6 +694,7 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
                        }
                        if (!strcmp(arg, "-c")) {
                                revs->diff = 1;
+                               revs->dense_combined_merges = 0;
                                revs->combine_merges = 1;
                                continue;
                        }
@@ -751,12 +782,19 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
                        }
                        *dotdot = '.';
                }
+               dotdot = strstr(arg, "^@");
+               if (dotdot && !dotdot[2]) {
+                       *dotdot = 0;
+                       if (add_parents_only(revs, arg, flags))
+                               continue;
+                       *dotdot = '^';
+               }
                local_flags = 0;
                if (*arg == '^') {
                        local_flags = UNINTERESTING;
                        arg++;
                }
-               if (get_sha1(arg, sha1) < 0) {
+               if (get_sha1(arg, sha1)) {
                        int j;
 
                        if (seen_dashdash || local_flags)
@@ -782,7 +820,7 @@ int setup_revisions(int argc, const char **argv, struct rev_info *revs, const ch
        if (def && !revs->pending_objects) {
                unsigned char sha1[20];
                struct object *object;
-               if (get_sha1(def, sha1) < 0)
+               if (get_sha1(def, sha1))
                        die("bad default revision '%s'", def);
                object = get_reference(revs, def, sha1, 0);
                add_pending_object(revs, object, def);