+static int is_tag_in_date_range(struct object *tag, struct rev_info *revs)
+{
+ unsigned long size;
+ enum object_type type;
+ char *buf, *line, *lineend;
+ unsigned long date;
+
+ if (revs->max_age == -1 && revs->min_age == -1)
+ return 1;
+
+ buf = read_sha1_file(tag->sha1, &type, &size);
+ if (!buf)
+ return 1;
+ line = memmem(buf, size, "\ntagger ", 8);
+ if (!line++)
+ return 1;
+ lineend = memchr(line, buf + size - line, '\n');
+ line = memchr(line, lineend ? lineend - line : buf + size - line, '>');
+ if (!line++)
+ return 1;
+ date = strtoul(line, NULL, 10);
+ free(buf);
+ return (revs->max_age == -1 || revs->max_age < date) &&
+ (revs->min_age == -1 || revs->min_age > date);
+}
+