WinUAE 1.4.3 public beta #12

[AlexJ]

However if you add one feature and a bug is found, you know exactly what caused the bug. Add four or five features at a time and find a bug and it makes finding what caused it much harder.

[Harrison]

Definitely. I always test everything straight after any addition to any code I'm writing to check it works correctly. However you can still not foresee problems happening with other existing code that is not part of the code you edited. I often encounter bugs between different website code that are not directly related.