! Missing number, treated as zero. with mathbh

[alinelena]

I try to build a simple document with lualatex using fontspec and unicode-math... this seems suddenly to fail.

---

luaotfload | load : Lookup/name: "OpenSans" -> "OpenSans-Regular.ttf"
luaotfload | aux : font no 31 (OpenSans) defines no feature for script math
luaotfload | aux : no font with id 31
\sym__um_fam10=\mathgroup13
LaTeX Font Info: Overwriting symbol font __um_fam10' in versionnormal'
(Font) EU2/OpenSans(2)/m/n --> EU2/OpenSans(2)/m/n on input lin
e 18.
LaTeX Font Info: Overwriting symbol font __um_fam10' in versionbold'
(Font) EU2/OpenSans(2)/m/n --> EU2/OpenSans(2)/bx/n on input li
ne 18.
! Missing number, treated as zero.

\protect
l.18 ...t[range=\mathbf/{latin,Latin,num}]{OpenSans}

?
! Emergency stop.

\protect
l.18 ...t[range=\mathbf/{latin,Latin,num}]{OpenSans}

End of file on the terminal!

I really have no idea what is wrong (this is on a fedora install fontspec is svn37926.2.4d and unicode math is svn38337.0.8b)

attached a small example and a the log.

Alin
hello-pure.zip

[wspr]

Sorry for the (very) slow reply. You can't use \mathbf (or \mathrm) when declaring alphabet ranges.