symfony/symfony — pull request #6635 by Seldaek (2013-01-09 10:29:53+00:00)
Title: [HttpFoundation] Remove special handling of empty arrays, fixes #5506

Bug fix: yes
Feature addition: no
Backwards compatibility break: tiny/no
Symfony2 tests pass: yes
Fixes the following tickets: #5506
License of the code: MIT

See the linked issue for details, IMO it should be removed because it's not consistently applied and just a WTF for people.