Presumably the project you mention is open source, so you've not lost your time – the time spent investigating the issue puts you in a better position to fork t

Presumably the project you mention is open source, so you've not lost your time – the time spent investigating the issue puts you in a better position to fork the project an implement the change to your specifications without involving the maintainer. I don't understand the anger, are you angry because he doesn't have the same opinion as you and doesn't want to make the implementation behave according to your opinion?