This hook allows for processing comments encountered by the compiler. If
this hook is defined, the compiler calls read_term/2
with the option
comments(Comments). If the list of comments returned by
is not empty it calls this comment hook with the following arguments.
Comments is the non-empty list of comments. Each comment
is a pair Position-String, where
String is a string object (see section
5.2) that contains the comment including delimiters.
Consecutive line comments are returned as a single comment.
Pos is a stream-position term that describes the starting
position of Term