Name a standard with 3 or more implementations and at least one of them will have violated the standard. Sometimes it's all three. Sometimes it's the implementa

Name a standard with 3 or more implementations and at least one of them will have violated the standard. Sometimes it's all three. Sometimes it's the implementation of the people who wrote the standard. This is inherent to all standards implemented by different products. There's no implementation police going around checking on and forcing people to implement standards properly. And in the course of just regular product development, it often starts to slowly violate the standard without notice. It sure does help when there's a test suite that you can validate your implementation against, but I find them rare.