Fix "can have its URL rewritten" buggy fallthrough

Closes #10551.

Author: domenic

source

@@ -91569,22 +91569,40 @@ interface <dfn interface>History</dfn> {
    data-x="concept-url-host">host</span>, or <span data-x="concept-url-port">port</span>
    components, then return false.</p></li>
 
-   <li><p>If <var>targetURL</var>'s <span data-x="concept-url-scheme">scheme</span> is an
-   <span>HTTP(S) scheme</span>, then return true. (Differences in <span
-   data-x="concept-url-path">path</span>, <span data-x="concept-url-query">query</span>, and <span
-   data-x="concept-url-fragment">fragment</span> are allowed for <code data-x="http
-   protocol">http:</code> and <code data-x="https protocol">https:</code> URLs.)</p></li>
-
-   <li><p>If <var>targetURL</var>'s <span data-x="concept-url-scheme">scheme</span> is "<code
-   data-x="">file</code>", and <var>targetURL</var> and <var>documentURL</var> differ in their
-   <span data-x="concept-url-path">path</span> component, then return false. (Differences in <span
-   data-x="concept-url-query">query</span> and <span data-x="concept-url-fragment">fragment</span>
-   are allowed for <code data-x="">file:</code> URLs.)</p></li>
+   <li>
+    <p>If <var>targetURL</var>'s <span data-x="concept-url-scheme">scheme</span> is an
+    <span>HTTP(S) scheme</span>, then return true.</p>
 
-   <li><p>If <var>targetURL</var> and <var>documentURL</var> differ in their <span
-   data-x="concept-url-path">path</span> component or <span data-x="concept-url-query">query</span>
-   components, then return false. (Only differences in <span
-   data-x="concept-url-fragment">fragment</span> are allowed for other types of URLs.)</p></li>
+    <p class="note">Differences in <span data-x="concept-url-path">path</span>, <span
+    data-x="concept-url-query">query</span>, and <span
+    data-x="concept-url-fragment">fragment</span> are allowed for <code data-x="http
+    protocol">http:</code> and <code data-x="https protocol">https:</code> URLs.</p>
+   </li>
+
+   <li>
+    <p>If <var>targetURL</var>'s <span data-x="concept-url-scheme">scheme</span> is "<code
+    data-x="">file</code>", then:</p>
+
+    <ol>
+     <li><p>If <var>targetURL</var> and <var>documentURL</var> differ in their <span
+     data-x="concept-url-path">path</span> component, then return false.</p></li>
+
+     <li><p>Return true.</p></li>
+    </ol>
+
+    <p class="note">Differences in <span data-x="concept-url-query">query</span> and <span
+    data-x="concept-url-fragment">fragment</span> are allowed for <code data-x="">file:</code>
+    URLs.</p>
+   </li>
+
+   <li>
+    <p>If <var>targetURL</var> and <var>documentURL</var> differ in their <span
+    data-x="concept-url-path">path</span> component or <span
+    data-x="concept-url-query">query</span> components, then return false.</p>
+
+    <p class="note">Only differences in <span data-x="concept-url-fragment">fragment</span> are
+    allowed for other types of URLs.</p>
+   </li>
 
    <li><p>Return true.</p></li>
   </ol>