Thanks for a wonderful article. Here’s an example ramping up accessibility and providing a .png fallback.

<svg class=“search-icon” role=“image” aria-labeledby=“icon-search-glass-title”> <use xlink:href=”#icon-search-glass”></use> <image class=“search-icon” src=“images/svg/search-glass.png”> <title id=“icon-search-glass-title”>Fancy Title Goes Here</title>
</svg>