rails/rails — pull request #16075 by nickpellant (2014-07-06 23:17:51+00:00)
Title: Fix ActiveSupport::Callbacks #set_callback docs.

`ActiveSupport::Calbacks.set_callback`now requires an
explicit block to be passed instead of implicit. This commit
amends the method's documentation.

This pull request is a fix for #16041 raised by @wr0ngway.

Documentation change only.