The launcher log (the file with STDOUT from the game) is extremely helpful for debugging crashes.

Sometimes, the game crashes without any errors in `latest.log`, but the relevant information is logged to the game’s STDOUT.

The most common cases are `module.ResolutionException` or certain mixin errors.

The `latest.log` file just cuts off, while STDOUT contains the error needed for debugging.

As the developer of the Crash Assistant mod, I’m active in all support channels, and asking users to disable “skip launcher” is a huge pain for everyone in the modding support communities.

Logging the game’s STDOUT to a file is very easy and quick to implement, and it would help the modding community a lot.

Modrinth recently added this feature — they log STDOUT to `logs/launcher_log.txt`. Here’s the PR where they implemented it:

https://github.com/modrinth/code/pull/3444

I recently contacted the ATLauncher devs; they loved the idea and are also planning to add this in a couple of weeks.

I think it would be good for logging STDOUT to `logs/launcher_log.txt` to become a standard for non-Mojang launchers.