ipython/ipython — pull request #2763 by takluyver (2013-01-09 13:23:33+00:00)
Title: Reset readline delimiters after loading rmagic.

Closes gh-2759

This fixes the problem when using the R magics. Users using rpy2 directly are still likely to experience it. I'm not sure how we can resolve that in IPython, except by awkward special cases that look for rpy2 being initialised.