Not just Unicode, but Unicode characters outside of the Basic Multilingual Plane (BMP). At the very least it is a pleasant unintended consequence. A decade ago

Not just Unicode, but Unicode characters outside of the Basic Multilingual Plane (BMP). At the very least it is a pleasant unintended consequence. A decade ago support for characters outside of the BMP was hairy (certainly possibly though in PDF's with LaTeX via XeLaTeX), and something you would use if you dabbled in the obscure glyphs contained in it; now it is standard.