harvesthq/chosen — pull request #2047 by itayadler (2014-08-18 22:13:17+00:00)
Title: Adding accessibility to chosen:

- Added unique_id which is used for ARIA attribtues
that require an ID. So now search_field and
search_results have an ID
- Added the required ARIA tags for chosen to behave
like a combobox
- Tested with Mac OSX Chrome 36 using VoiceOver,
now the screen reader is able to read the values
in the chosen select box, like it's a SELECT
element

NOTE:
This is exactly what [jQueryUI Selectmenu](http://jqueryui.com/selectmenu/) does