> async-input isn't even useful for ipython, is it? you use prompt-toolkit :-)


You don't have to use prompt_toolkit (https://github.com/ipython/rlipython), but yes we don't need this. 

> Do you have a patch for this?  If not I can take a look at this myself tomorrow or the day after.

No, I do not have a patch. I can provide a few test case and I am happy to spend some task to sit-down and discuss what we exactly do so far in IPython. I'm flying back Sunday morning.