a {}
p, div {}
#foobar .foo {}
&:hover {}
&-sidebar {}
#context a%extreme {}
#{$selector}:before {}
----------------------------------------------------
[
["selector", ["a "]], ["punctuation", "{"], ["punctuation", "}"],
["selector", ["p, div "]], ["punctuation", "{"], ["punctuation", "}"],
["selector", ["#foobar .foo "]], ["punctuation", "{"], ["punctuation", "}"],
["selector", [["parent", "&"], ":hover "]], ["punctuation", "{"], ["punctuation", "}"],
["selector", [["parent", "&"], "-sidebar "]], ["punctuation", "{"], ["punctuation", "}"],
["selector", ["#context a", ["placeholder", "%extreme"]]], ["punctuation", "{"], ["punctuation", "}"],
["selector", [["variable", "#{$selector}"], ":before "]], ["punctuation", "{"], ["punctuation", "}"]
]
----------------------------------------------------
Checks for selectors.