From 8c4f0bdf81d9355745cf988cebed195b4d06c518 Mon Sep 17 00:00:00 2001
From: Natalie Weizenbaum <nweiz@google.com>
Date: Fri, 6 Jan 2017 20:11:56 -0800
Subject: [PATCH] Fix superselector computation for :not().

---
 CHANGELOG.md                  | 2 ++
 lib/src/extend/functions.dart | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index fe587ad5..06b30be8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,6 +16,8 @@
 
 * Forbid mixins and functions from being defined in control directives.
 
+* Fix a superselector-computation edge case involving `:not()`.
+
 ## 1.0.0-alpha.6
 
 * Allow `var()` to be passed to `rgb()`, `rgba()`, `hsl()`, and `hsla()`.
diff --git a/lib/src/extend/functions.dart b/lib/src/extend/functions.dart
index 5fda9d5a..0e8a60b5 100644
--- a/lib/src/extend/functions.dart
+++ b/lib/src/extend/functions.dart
@@ -729,7 +729,7 @@ bool _selectorPseudoIsSuperselector(
 
     case 'not':
       return pseudo1.selector.components.every((complex) {
-        return compound2.components.every((simple2) {
+        return compound2.components.any((simple2) {
           if (simple2 is TypeSelector) {
             var compound1 = complex.components.last;
             return compound1 is CompoundSelector &&