ipython/ipython — pull request #3409 by pankajp (2013-06-08 06:38:38+00:00)
Title: Prevent qtconsole frontend freeze on lots of output.

The output from the kernel is now clipped to last `buffer_size`
before displaying to prevent freezing the frontend on lots of
output from the kernel.
Test cases:
`In [1]: for i in xrange(1000000): print i`
`In [2]: range(100000)`
Without this commit the first input causes the qtconsole frontend
to freeze, not even responding to `Ctrl+C`.