repo-config: give value_ a sane default so regexec won't segfault

[git.git] / revision.c

diff --git a/revision.c b/revision.c
index 4885871..2a33637 100644 (file)
--- a/revision.c
+++ b/revision.c
@@ -482,6 +482,21 @@ 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" */
+                       if ((*arg == '-') && isdigit(arg[1])) {
+                               revs->max_count = atoi(arg + 1);
+                               continue;
+                       }
+                       if (!strcmp(arg, "-n")) {
+                               if (argc <= i + 1)
+                                       die("-n requires an argument");
+                               revs->max_count = atoi(argv[++i]);
+                               continue;
+                       }
+                       if (!strncmp(arg,"-n",2)) {
+                               revs->max_count = atoi(arg + 2);
+                               continue;
+                       }
                        if (!strncmp(arg, "--max-age=", 10)) {
                                revs->max_age = atoi(arg + 10);
                                revs->limited = 1;
@@ -669,13 +684,11 @@ static void rewrite_parents(struct commit *commit)
 struct commit *get_revision(struct rev_info *revs)
 {
        struct commit_list *list = revs->commits;
-       struct commit *commit;
 
        if (!list)
                return NULL;
 
        /* Check the max_count ... */
-       commit = list->item;
        switch (revs->max_count) {
        case -1:
                break;
@@ -686,22 +699,28 @@ struct commit *get_revision(struct rev_info *revs)
        }
 
        do {
-               commit = pop_most_recent_commit(&revs->commits, SEEN);
+               struct commit *commit = revs->commits->item;
+
                if (commit->object.flags & (UNINTERESTING|SHOWN))
-                       continue;
+                       goto next;
                if (revs->min_age != -1 && (commit->date > revs->min_age))
-                       continue;
+                       goto next;
                if (revs->max_age != -1 && (commit->date < revs->max_age))
                        return NULL;
                if (revs->no_merges && commit->parents && commit->parents->next)
-                       continue;
+                       goto next;
                if (revs->paths && revs->dense) {
                        if (!(commit->object.flags & TREECHANGE))
-                               continue;
+                               goto next;
                        rewrite_parents(commit);
                }
+               /* More to go? */
+               if (revs->max_count)
+                       pop_most_recent_commit(&revs->commits, SEEN);
                commit->object.flags |= SHOWN;
                return commit;
+next:
+               pop_most_recent_commit(&revs->commits, SEEN);
        } while (revs->commits);
        return NULL;
 }