Minecraft Launcher Modification

This 'hack' allows the vanilla launcher to be modified by a single patch to the main class.

It is really an experiment to play about with reflection among others but I use this as my launcher to Minecraft.

Features

Select Minecraft Forge builds direct in the launcher's profile selector
You can check the "Enable Forge Versions" checkbox to get a list.
It also provides a checkbox for standard vanilla releases to be toggled.
Can download and play almost any forge version. Forge has changed a lot, especially in how it is installed. Depending on what version you select, ModLoader may be downloaded or various other install procedures take place.
See the mods you have in the mods folder. This is a very basic feature that may be improved.

You will need to decompile your Minecraft.jar that you launch the game with.
How you do this is up to you, I am unable to share the sources.
Apply the patch Bootstrap.java.patch (You may have to do this manually).
Copy all files (i.e. git clone) to wherever the decompiled sources are.
Run gradle eclipse in that somewhere to setup the project.
Import the project in eclipse.
Move files to where they should be for a gradle project and fix any errors the decompiler made.
Setup a Run Configuration to run net.minecraft.bootstrap.Bootstrap

Everything should work.

You can run gradle build which will output: