Method needed to get rake command line options for spawning new rake job

I am implementing a "top level" Rakefile that will spawn off rake jobs in sub-directories.
This is not hard to do, except that I want to pass the same options to the jobs that was passed to the original rake command. I cannot find a way to reliably find out what those options were without using some quasi private methods such as handle_options in the application object. I do not want the targets, just the options.

Could we add code to handle_options to put the options that are parsed into an array that is a public attribute of the application object?

Then I could grab the rake options by a simple use of something like:

Rake.application.rake_options

If there is some way to easily do this that I am missing please let me know. I originally was just iterating over the ARGV entries and grabbing things out of it, but quickly realized that the command line options may or may not have an argument following a "-" prefixed option and there is no way I can know that without duplicating all the code in standard_rake_options.

Thanks.

Start with Rake.application and trace the handle_options and standard_rake_options entry points to see how command-line options are parsed and retained. Check how a top-level Rakefile could read the parsed value when spawning jobs in subdirectories. Done means the parsed options are exposed through a public application attribute without requiring callers to duplicate option parsing.