nonsequitur/inf-ruby — pull request #25 by purcell (2013-10-06 09:11:06+00:00)
Title: Avoid error when trying to switch to non-existent inf-ruby buffer

Running `ruby-switch-to-inf` when there is no `inf-ruby-buffer` produces a hard error due to passing `nil` to `get-buffer`. This commit makes the handling of this case more robust.