[filip01]

Put this in your user key bindings and then you can auto-indent with cmd+shift+g:

{ "keys": ["command+shift+g"], "command": "reindent", "args": {"single_line": false}}

[blahbap]

Ah, lovely, thanks! Note, just replace "command" with "ctrl" for Windows

[danielsamuels]

I think you can use 'super' for cross platform compatibility.