EllisLab/CodeIgniter — pull request #1037 by timw4mail (2012-02-13 19:10:51+00:00)
Title: Refixed Old-style pdo connection string

Sorry @philsturgeon...looks like there was another issue.

I personally use the pdo driver, with pgsql on my website, so I know, as is, this works.

The previous fix gave me a dsn like this `localhostpgsql:host=localhost`.