EllisLab/CodeIgniter — pull request #1252 by jbottigliero (2012-04-12 05:29:17+00:00)
Title: Add support for 'flash error messages' to the Form Validation Library

This commit gives the ability to pass an associative array of error
message as the third parameter of the set_rules method. This adds a
simple way to pass field/input specific error messages rather than rule
specific messages that set_messsage provides.