But it looks like I'll need to invoke some black magic (e.g. using a C extension or fiddle) to get access to locals captured by a define_method block, e.g:

re = dynamically_generated_regexp
define_method(:bar) {|baz| foo.match? baz }

I'd hoped they'd be accessible like they are on Proc, via `method.binding` or `method.to_proc.binding`.