Check for D2 IWAD before D1

[Graf Zahl]

But it just goes to show you - always, always, always, if you can, state the reason for your request. It really goes a long way towards resolving the issue you have if your request is not itself something the developers want to implement.

Indeed. This one's a textbook example of "I want A to work and if B is done it will, so let's request B."

[Matt]

Were these commits only made to GZDoom? I don't see them on the ZDoom git.

[Rachael]

ZDoom is no longer being actively maintained. So yes - everything goes to GZDoom.