Fix forEach algorithm of interfaces with indexed props.

Author: tobie

index.bs

@@ -11176,21 +11176,22 @@ If the interface defines an [=indexed property getter=],
 then the <emu-val>Function</emu-val> object is
 the initial value of the “forEach” data property of [=%ArrayPrototype%=].
 
-If the interface has a [=pair iterator=],
-then the <emu-val>Function</emu-val> must
-have the same behavior as one that would exist
-assuming the interface had this [=operation=]
-instead of the [=iterable declaration=]:
-
-<pre highlight="webidl">
-  interface Iterable {
-    void forEach(Function callback, optional any thisArg);
-  };
-</pre>
+<div algorithm="to invoke the forEach method of interfaces with indexed properties">
 
-with the following prose definition:
+    If the interface has a [=pair iterator=],
+    then the <emu-val>Function</emu-val> must have the same behavior,
+    when invoked with argument |callback| and optional argument |thisArg|,
+    as one that would exist assuming the interface had this [=operation=]
+    instead of the [=iterable declaration=]:
+    
+    <pre highlight="webidl">
+      interface Iterable {
+        void forEach(Function callback, optional any thisArg);
+      };
+    </pre>
+    
+    with the following prose definition:
 
-<div algorithm="to invoke the forEach method of interfaces with indexed properties">
     1.  Let |O| be the <strong>this</strong> value.
     1.  Let |pairs| be the list of [=value pairs to iterate over=].
     1.  Let |i| be 0.

index.html

@@ -10645,16 +10645,16 @@ <h5 class="heading settled" data-level="3.6.8.2" id="es-forEach"><span class="se
    <p>If the interface defines an <a data-link-type="dfn" href="#dfn-indexed-property-getter" id="ref-for-dfn-indexed-property-getter-7">indexed property getter</a>,
 then the <emu-val>Function</emu-val> object is
 the initial value of the “forEach” data property of <a data-link-type="dfn" href="https://tc39.github.io/ecma262/#sec-well-known-intrinsic-objects">%ArrayPrototype%</a>.</p>
-   <p>If the interface has a <a data-link-type="dfn" href="#dfn-pair-iterator" id="ref-for-dfn-pair-iterator-6">pair iterator</a>,
-then the <emu-val>Function</emu-val> must
-have the same behavior as one that would exist
-assuming the interface had this <a data-link-type="dfn" href="#dfn-operation" id="ref-for-dfn-operation-73">operation</a> instead of the <a data-link-type="dfn" href="#dfn-iterable-declaration" id="ref-for-dfn-iterable-declaration-12">iterable declaration</a>:</p>
+   <div class="algorithm" data-algorithm="to invoke the forEach method of interfaces with indexed properties">
+    <p>If the interface has a <a data-link-type="dfn" href="#dfn-pair-iterator" id="ref-for-dfn-pair-iterator-6">pair iterator</a>,
+    then the <emu-val>Function</emu-val> must have the same behavior,
+    when invoked with argument <var>callback</var> and optional argument <var>thisArg</var>,
+    as one that would exist assuming the interface had this <a data-link-type="dfn" href="#dfn-operation" id="ref-for-dfn-operation-73">operation</a> instead of the <a data-link-type="dfn" href="#dfn-iterable-declaration" id="ref-for-dfn-iterable-declaration-12">iterable declaration</a>:</p>
 <pre class="highlight"><span class="kt">interface</span> <span class="nv">Iterable</span> {
   <span class="kt">void</span> <span class="nv">forEach</span>(<span class="n">Function</span> <span class="nv">callback</span>, <span class="kt">optional</span> <span class="kt">any</span> <span class="nv">thisArg</span>);
 };
 </pre>
-   <p>with the following prose definition:</p>
-   <div class="algorithm" data-algorithm="to invoke the forEach method of interfaces with indexed properties">
+    <p>with the following prose definition:</p>
     <ol>
      <li data-md="">
       <p>Let <var>O</var> be the <strong>this</strong> value.</p>