$Foo
$foo_42!
$$
$!#$%&'*+-./:<=>?@\^_`|~

----------------------------------------------------

[
	["variable", "$Foo"],
	["variable", "$foo_42!"],
	["variable", "$$"],
	["variable", "$!#$%&'*+-./:<=>?@\\^_`|~"]
]

----------------------------------------------------

Checks for variables.