in src/main/java/com/twitter/penguin/korean/util/CharArraySet.java [195:206]
public String toString() {
final StringBuilder sb = new StringBuilder("[");
for (Object item : this) {
if (sb.length() > 1) sb.append(", ");
if (item instanceof char[]) {
sb.append((char[]) item);
} else {
sb.append(item);
}
}
return sb.append(']').toString();
}