In OCaml's expression syntax, "begin" is a synonym for left parenthesis, and "end" is a synonym for right parenthesis. So I've taken to just using "begin match

In OCaml's expression syntax, "begin" is a synonym for left parenthesis, and "end" is a synonym for right parenthesis. So I've taken to just using "begin match e with ... end" in every situation to avoid this problem.