scratchpad moritz <h2>Allowing a callback to return more than one level</h2> <p>I want to write some kind of text-only menu system, and that defines callbacks which are called for specific input.</p> <p>Now the default behavior is to simply ignore the return value (trust me, it makes sense in my $work context), and exit the menu when the input is empty. However I want to give some callbacks the possibility to exit the menu too.</p> <p>How? A normal return() doesn't accomplish that, so here is my hack: <code> use strict; use warnings; use 5.010; my $return_args; sub RETURN { $return_args = [@_]; no warnings 'exiting'; last 'UNIQUELABEL'; } sub menu { UNIQUELABEL: for (@_) { $_->(); } return @{$return_args} if $return_args; }; say menu sub { say 'go on' }, sub { RETURN 'ended' }, sub { 'never called' }, </code>