emberjs/ember.js — pull request #1946 by mutewinter (2013-01-31 20:44:05+00:00)
Title: Added 'pattern' attribute to text field for iOS.

The keyboard shown for a text field can be affected by its pattern
attribute on iOS. See Apple's documentation for more details.

http://developer.apple.com/library/ios/#documentation/StringsTextFonts/Conceptual/TextAndWebiPhoneOS/KeyboardManagement/KeyboardManagement.html