Clarify case-sensitivity of ID and class attribute selectors

source

@@ -68015,8 +68015,9 @@ contradict people?
   <p>All other attribute values and everything else must be treated as entirely
   <span>case-sensitive</span> for the purposes of selector matching. This includes:</p>
 
-  <ul class=brief>
-   <li> IDs and classes in <span>no-quirks mode</span> and <span>limited-quirks mode</span>
+  <ul class="brief">
+   <li> ID and class selectors in <span>no-quirks mode</span> and <span>limited-quirks mode</span>
+   <li> ID and class <span data-x="attribute selector">attribute selector</span> values
    <li> the names of elements not in the <span>HTML namespace</span>
    <li> the names of <span>HTML elements</span> in <span>XML documents</span>
    <li> the names of attributes of elements not in the <span>HTML namespace</span>
@@ -121074,6 +121075,7 @@ INSERT INTERFACES HERE
   &#x0141;ukasz Pilorz,
   Luke Kenneth Casson Leighton,
   Maciej Stachowiak,
+  Magne Andersson,
   Magnus Kristiansen<!-- Dashiva -->,
   Maik Merten,
   Majid Valipour,