fix pointer fill

Author: mbostock

src/marks/pointer.js

@@ -44,8 +44,7 @@ export class Pointer extends Mark {
     let C = []; // a sparse index from index[i] to an svg:circle element
     let P = null; // the persistent selection; a subset of index, or null
 
-    const g = create("svg:g")
-        .attr("fill", "none");
+    const g = create("svg:g");
 
     const parent = g.append("g")
         .call(applyIndirectStyles, this)
@@ -97,6 +96,7 @@ export class Pointer extends Mark {
     }
 
     g.append("rect")
+        .attr("fill", "none")
         .attr("pointer-events", "all")
         .attr("width", width + marginLeft + marginRight)
         .attr("height", height + marginTop + marginBottom)

test/output/gistempAnomalyPointer.html

@@ -1727,8 +1727,8 @@
       <circle cx="619.6520556710926" cy="89.01408450704224" r="3" stroke="rgb(197, 65, 63)"></circle>
       <circle cx="620" cy="108.73239436619714" r="3" stroke="rgb(213, 95, 80)"></circle>
     </g>
-    <g fill="none">
+    <g>
       <g aria-label="pointer" fill="none" stroke="#3b5fc0" stroke-width="1.5"></g>
-      <rect pointer-events="all" width="700" height="450"></rect>
+      <rect fill="none" pointer-events="all" width="700" height="450"></rect>
     </g>
   </svg><output>1644</output></span>