EDIT: Add this answer to documentation HOW-TO section

So I've recently started using doit, and it seem good. But I realized I wanted to add a --debug flag to the build, which would set some tasks to perform slightly different roles (like logging to a debug file).

Now I could create a debug task, or I could use a command line variable, but the --debug flag seems cleanest, and is also more standard in terms of how other programs work.

Currently attempting to use options on doit or doit run will result in:

ERROR: Error parsing Command: option --debug not recognized (parsing options: ['--debug'])

So my question is whether support can be added for passing parameters in this way?

I see a few potential options:

1. Invalid options are simply ignored and not sent as parameters to any tasks rather than erroring
2. You define global parameters, which allows them on any task and then:
   a. They are passed to any tasks that provide the same name in their params, others are ignored
   b. They are stored as global variables, retrieved by get_var

Just a thought I had trying to create my build scripts.