how to handle nested comment in flex

Question

I am working on writing a flex scanner for a language supporting nested comment like this:

/*
/**/
*/

I use to work on ocaml/ocamllex that supp

Answer 1

Same way you would any nested stuff: Stacks

Stack the openings until their respective closings are found. If the stack is uneven at the end, you're missing either an opening or a closing element.