Improve creation of 2D and ImageBitmap rendering contexts

The former used "let" to change something and the latter used an undefined context variable to define various things.

Author: annevk

source

@@ -59962,42 +59962,35 @@ interface <dfn>Path2D</dfn> {
   steps:</p>
 
   <ol>
-
    <li><p>If the algorithm was passed some arguments, then let <var>arg</var> be the first such
    argument. Otherwise, let <var>arg</var> be undefined.</p></li>
 
    <li><p>Let <var>settings</var> be the result of <span data-x="coerce context arguments for
    2D">coercing the <var>arg</var> context arguments for 2D</span>.</p></li>
 
-   <li><p>Create a new <code>CanvasRenderingContext2D</code> object.</p></li>
+   <li><p>Let <var>context</var> be a new <code>CanvasRenderingContext2D</code> object.</p></li>
 
-   <li><p>Initialize its <code data-x="dom-context-2d-canvas">canvas</code> attribute to point to
-   <var>target</var>.</p></li>
+   <li><p>Initialize <var>context</var>'s <code data-x="dom-context-2d-canvas">canvas</code>
+   attribute to point to <var>target</var>.</p></li>
 
-   <li><p>Let the new <code>CanvasRenderingContext2D</code> object's <span>output bitmap</span> be
-   the same bitmap as <var>target</var>'s bitmap (so that they are shared).</p></li>
+   <li><p>Set <var>context</var>'s <span>output bitmap</span> to the same bitmap as
+   <var>target</var>'s bitmap (so that they are shared).</p></li>
 
    <li><p><span data-x="concept-canvas-set-bitmap-dimensions">Set bitmap dimensions</span> to the
    numeric values of <var>target</var>'s <code data-x="attr-canvas-width">width</code> and
    <code data-x="attr-canvas-height">height</code> content attributes.</p></li>
 
    <li>
-
     <p>Process each of the members of <var>settings</var> as follows:</p>
 
     <dl>
-
      <dt><dfn><code data-x="dom-CanvasRenderingContext2DSettings-alpha">alpha</code></dfn></dt>
-
-     <dd>If false, then set the new <code>CanvasRenderingContext2D</code> object's <span
-     data-x="concept-canvas-alpha">alpha</span> flag to false.</dd>
-
+     <dd>If false, then set <var>context</var>'s <span data-x="concept-canvas-alpha">alpha</span>
+     flag to false.</dd>
     </dl>
-
    </li>
 
-   <li><p>Return the new <code>CanvasRenderingContext2D</code> object.</p></li>
-
+   <li><p>Return <var>context</var>.</p></li>
   </ol>
 
   <hr>
@@ -62591,14 +62584,13 @@ try {
    data-x="">repeat-y</code>", or "<code data-x="">no-repeat</code>", then throw a
    <span>"<code>SyntaxError</code>"</span> <code>DOMException</code>.</p></li>
 
-   <li><p>Create a new <code>CanvasPattern</code> object with the image <var>image</var>
-   and the repetition behavior given by <var>repetition</var>.</p></li>
+   <li><p>Let <var>pattern</var> be a new <code>CanvasPattern</code> object with the image
+   <var>image</var> and the repetition behavior given by <var>repetition</var>.</p></li>
 
-   <li><p>If <var>image</var> <span>is not origin-clean</span>, then mark the
-   <code>CanvasPattern</code> object as <dfn data-x="concept-canvas-pattern-not-origin-clean">not
-   origin-clean</dfn>.</p></li>
+   <li><p>If <var>image</var> <span>is not origin-clean</span>, then mark <var>pattern</var> as <dfn
+   data-x="concept-canvas-pattern-not-origin-clean">not origin-clean</dfn>.</p></li>
 
-   <li><p>Return the <code>CanvasPattern</code> object.</p></li>
+   <li><p>Return <var>pattern</var>.</p></li>
   </ol>
 
   <p>Modifying the <var>image</var> used when creating a <code>CanvasPattern</code> object
@@ -64865,39 +64857,32 @@ dictionary <dfn>ImageBitmapRenderingContextSettings</dfn> {
    ImageBitmapRenderingContext">coercing the <var>arg</var> context arguments for
    <code>ImageBitmapRenderingContext</code></span>.</p></li>
 
-   <li><p>Create a new <code>ImageBitmapRenderingContext</code> object.</p></li>
+   <li><p>Let <var>context</var> be a new <code>ImageBitmapRenderingContext</code> object.</p></li>
 
-   <li><p>Initialize its <code data-x="dom-context-2d-canvas">canvas</code> attribute to point to
-   <var>target</var>.</p></li>
+   <li><p>Initialize <var>context</var>'s <code data-x="dom-context-2d-canvas">canvas</code>
+   attribute to point to <var>target</var>.</p></li>
 
-   <li><p>Let the new <code>ImageBitmapRenderingContext</code> object's <span
-   data-x="concept-ImageBitmapRenderingContext-output-bitmap">output bitmap</span> and
-   <var>target</var>'s bitmap be a shared reference to the same bitmap.</p></li>
+   <li><p>Set <var>context</var>'s <span
+   data-x="concept-ImageBitmapRenderingContext-output-bitmap">output bitmap</span> to the same
+   bitmap as <var>target</var>'s bitmap (so that they are shared).</p></li>
 
    <li><p>Run the steps to <span>set an <code>ImageBitmapRenderingContext</code>'s output
-   bitmap</span>, using the new <code>ImageBitmapRenderingContext</code> object as the
-   <var>context</var> argument, and with no <var>bitmap</var> argument.</p></li>
+   bitmap</span> with <var>context</var>.</p></li>
 
    <li><p>Initialize <var>context</var>'s <span
    data-x="concept-ImageBitmapRenderingContext-alpha">alpha</span> flag to true.
 
    <li>
-
     <p>Process each of the members of <var>settings</var> as follows:</p>
 
     <dl>
-
      <dt><dfn><code data-x="dom-ImageBitmapRenderingContextSettings-alpha">alpha</code></dfn></dt>
-
      <dd>If false, then set <var>context</var>'s <span
      data-x="concept-ImageBitmapRenderingContext-alpha">alpha</span> flag to false.</dd>
-
     </dl>
-
    </li>
 
-   <li><p>Return the new <code>ImageBitmapRenderingContext</code> object.</p></li>
-
+   <li><p>Return <var>context</var>.</p></li>
   </ol>
 
   <hr>