Message4795

You're right, we definitely need to be flushing the OutputStream wrapped 
by StreamIO. I've fixed that in r6449

Did your extracted out example with the extra flush work? If so, jython 
trunk should be the equivalent

I do fear that this example still might block due to our file 
implementation. Our readline reads in large chunks as an optimization 
(this is copied from py3k), and I think that could still deadlock the 
stream to the process. I would like to see the actual code you're trying

Since the flush issue is solved I'm closing this issue. Feel free to log 
another if we need to continue pressing forward on this example