mxcl/homebrew — pull request #10627 by ottbot (2012-03-01 22:53:53+00:00)
Title: Update the xcode-select suggestion to use /Applications/Xcode.app

Probably a typo, but the current suggestion by doctor.rb is to do:
xcode-select -switch /Application/Xcode.app

While Xcode.app probably lives in /Applications