[tex-live] TeTeX in TeX Live 2015 broken on Mac

[Richard Koch]

Folks,

This list already has hints from Herbert Schulz of additional XeTeX problems
on the Mac in TeXLive 2015, independent of the bug, now fixed, in xdvipdfmx. 
The purpose of this message is to confirm the bug. 

MacTeX contains two
short documents, with source, to show users what XeTeX can do. Neither
typesets in XeTeX for 2015. Example:

\documentclass[12pt]{article}
\usepackage{geometry} 
\geometry{letterpaper}
\usepackage{graphicx}
\usepackage{amssymb}

\usepackage{fontspec,xltxtra,xunicode}
\defaultfontfeatures{Mapping=tex-text}
\setromanfont[Mapping=tex-text]{Hoefler Text}
\setsansfont[Scale=MatchLowercase,Mapping=tex-text]{Gill Sans}
\setmonofont[Scale=MatchLowercase]{Andale Mono}

\begin{document}

\newfontfamily{\A}{Geeza Pro}
\newfontfamily{\H}[Scale=0.9]{Lucida Grande}
\newfontfamily{\J}[Scale=0.85]{Osaka}

Here are some multilingual Unicode fonts: this is Arabic text: {\A السلام عليكم}, 
this is Hebrew: {\H שלום}, and here's some Japanese: {\J 今日は}.

\end{document}  


By commenting out font commands, one can see that every font command
except one leads to the same error:

Missing = inserted for \ifnum
<to be read again>
	\l_fontspec_font
1.39 \newfontfamily{\H}[Scale=0.9]{Lucida Grande}

The font command which works is the line about Gill Sans.

Dick Koch