vmg/redcarpet — pull request #200 by mmorearty (2013-02-14 00:37:21+00:00)
Title: Fix #57 -- SmartyPants handling of single quotes.

`git bisect` indicates that the single quote bug was introduced in commit ad2c7fe1b05a6af47ed8a8a7091808e8d8140697. The problem is that by the time quotation marks are being converted, `'` has already been changed into `'`, and the code to convert that into a smart quote is only looking for `'`, not `'`.

There was already code to handle the fact that `"` had been converted into `"`, but it appears that single-quotes were overlooked.