[mmis1000]

The source map is released by mojang itself.

Before this exists, there is a community project to de-obfuscate naming back to readable human names. And it usually took about a month after new minecraft version released. But this is no longer needed because mojang now release the actual mapping.

So microsoft(mojang) do want to make modders live easier out of own willing. Not just because it is java. Or they don't really need to publish that at all.

[kbolino]

Ok, it seems we're both right in a sense. They do release obfuscation maps to help modders. However, they are adamant that this does not make Minecraft open source. I'd also be a bit surprised if they include in those maps the source of DRM/online activation components (relevant to the original topic).

https://twitter.com/Dinnerbone/status/1169242801508376582

[kbolino]

Also, I looked at one of these things, and it's just class names, method names, and source line/column numbers. There's no comments, no variable or parameter names, no original source lines, and no hints about what optimizations or inline obfuscations were done.

https://launcher.mojang.com/v1/objects/a981dbf4095dbb2ffb078...