scrooloose/syntastic — pull request #242 by daniel-walker (2012-04-29 22:48:17+00:00)
Title: Adds a feature to allow syntax checkers to run in the background.

I was motivated by the fact that it takes 30 seconds sometimes for a checker to finish. it's annoying to have to sit there and wait for the thing to finish. I incorporated code from nevar's pull request, but this version if much more full featured. It's can be turned off, and when it's on it will only run if the checker has been modified to be compatible.