Matthew Seal

In general it's hard to make pass throughs to the handlers as they're initialized independently of the execution control plane. We could look at adding the ability to pass options...

@Gurulhu As your second edit notes, it's fairly deep in the stack, so the [read](https://github.com/nteract/papermill/blob/d30bcf23ff37e06e0df5daf58ba92b3d2b0ad85a/papermill/iorw.py#L227-L228) call in the middle and the calls above don't pass arguments down. In theory if...

The concern here is it becomes a bit complicated in order to not be language specific, which puts more code complexity in papermill to understand how to parse various languages...

Noted the +1 for comment based parameter management. I'm still worried that supporting users would be nasty with comments. We'd have to handle whitespacing, comments not at the top of...

On unix systems `papermill papermill/tests/notebooks/simple_execute.ipynb /dev/null` works.

From a CLI perspective tossing the output to null or tmp is still the recommendation if you don't want it. You can also point the output to the input path...

Likely this is a result of the magic function not raising an exception. I'd need to investigate some to determine if that's the case. If so, then this should probably...

Sorry I got very sick and backlogged on items. If it's raising `UsageError` from the linked code it should halt and send an error status that halts execution as you'd...

Sorry I haven't been able to get to all the issues quickly here. I believe this is actually an ipython issue (or a non-issue) and not a papermill one, and...

> Will I see this error status on the cell in papermill result? You're supposed to.. I think because no exception is raised but an error status update is still...