=begin pod

=TITLE class X::Syntax::Regex::SolitaryQuantifier

=SUBTITLE Compilation error due to a regex quantifier without preceding atom

    class X::Syntax::Regex::SolitaryQuantifier does X::Syntax { }

Syntax error when a stand alone quantifier (without an preceding atom
to quantify) is encountered in a regular expression.

For example

    / * /

dies with

    ===SORRY!=== Error while compiling
    Quantifier quantifies nothing

=end pod
