As has been reported on tex.sx the =-syntax in \hyphenation seems to
be broken in luatex 1.07:
https://tex.stackexchange.com/questions/412894/hyphenation-problem-in-luatex-after-miktex-update
It fails for me in miktex (with luatex 1.07.0) and in texlive when I
use a development luatex. With the default luatex 1.0.4 it works as
expected.
In context it doesn't work either:
\starttext
\hyphenation{Ba-den=Würt-tem-berg}
\hsize=1pt
Baden-Württemberg
\stoptext
--
Ulrike Fischer
http://www.troubleshooting-tex.de/
