How to use tabs for leading indentation

You do it like this:

class Foo {
[tab]function doCoolStuff {
[tab][tab]print("I am great!\n".
[tab][tab]      "Are you great, too?");
[tab][tab]
[tab][tab]$a    = "Aye";
[tab][tab]$junk = "Junk";
[tab]}
}

Note that: