- * If there is more than one ChatLine for the given ID, the first one will be returned.
- * \param msgId The message ID to look for
+ * If matchExact is false, and we don't have an exact match for the given msgId, we return the visible line right
+ * above the requested one.
+ * \param msgId The message ID to look for
+ * \param matchExact Whether we find only exact matches
+ * \param ignoreDayChange Whether we ignore day change messages