Added support for (basic) nested parens and (basic) nested brackets. You can now do: div:not(.foo[a:not(.even)]) or div[p[a.even]].

src/selector/selector.js

@@ -70,10 +70,10 @@ jQuery.extend({
 		"\\[ *(@)S *([!*$^=]*) *('?\"?)(.*?)\\4 *\\]",
 
 		// Match: [div], [div p]
-		"(\\[)\\s*(.*?)\\s*\\]",
+		"(\\[)\\s*(.*?(\\[.*?\\])?[^[]*?)\\s*\\]",
 
 		// Match: :contains('foo')
-		"(:)S\\(\"?'?([^\\)]*?)\"?'?\\)",
+		"(:)S\\(\"?'?(.*?(\\(.*?\\))?[^(]*?)\"?'?\\)",
 
 		// Match: :even, :last-chlid
 		"([:.#]*)S"