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<!DOCTYPE html>
<html>
<body>
<script>
function test() {
let canvas = document.createElement('canvas');
canvas.width = canvas.height = 200;
let ctx = canvas.getContext('2d');
ctx.globalCompositeOperation = 'copy';
ctx.translate(0, 0);
ctx.rect(0, 0, 100, 100);
ctx.clip();
ctx.fillStyle = '#f00';
ctx.resetTransform();
ctx.fillRect(0, 0, canvas.width, canvas.height);
return canvas;
}
document.body.appendChild(test(0));
</script>
</body>
</html>
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