I recently switched to the snapshot versions of Minecraft. In the snapshot versions there is a launcher. From this launcher you choose a version of Minecraft to run. This then launches a .jar file from the folder ~/.minecraft/version. This appears as a separate icon on the unity launcher bar. I could set the icon per version of Minecraft, but new versions come out at least once a week and setting a .desktop file for each would be irritating. Is it possible to set unity to display the same icon for all applications that run from the ~/.minecraft/version folder?
First of all you should send me example file of all, then i can write a script that does it for you... And secondary: Are you want to show them in launcher(sidebar) or in dash(in menu)
for your last, i dont think they added such script. but afaik, you can write a script which is checks the folder and creates new versions of desktop files... with icons.