e/Coding by exception

Information
has gloss	eng: Coding by exception is an anti-pattern where software quickly degrades in performance and maintainability because it evolves by having special case functionality added piecemeal. This typically happens because an existing piece of software is extended to cover requirements that were not previously considered at the project's inception. This anti-pattern is unrelated to software exception handling.
lexicalization	eng: Coding by exception
instance of	e/AntiPattern