<a href="https://en.wikipedia.org/wiki/metapost" class="extiw" title="w:metapost">Metapost</a> logo with broken text to get aspect ratio better suited for an icon.
<a href="//commons.wikimedia.org/wiki/User:Georg-Johann" title="User:Georg-Johann">Georg-Johann</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>