This is related to Fonts for PolyTonic Greek. That post contains (supposedly) working example using the names of many fonts, and each font name contains a space. Names include: "CMU Serif", "EB Garamond", "GFS Artemisia". The post states that the fonts are all part of TeXLive 2013. I have a TeXLive updated 2013 distribution. I copied the code exactly and attempted to xelatex it. But it returned an error stating that a font cannot have a space in its name. How did the previous poster manage to run code in which all font names contain spaces?