Interesting Bug with LuaTex, \setfontfeature{oldstyle}, colors and tikz

Interesting Bug with LuaTex, \setfontfeature{oldstyle}, colors and tikz

[holzminister]

Hi!

I wanted to use colors in my tikz-graphics. The following example
gives a nice red line with "texexec":

>>>
\enableregime[utf-8]
\mainlanguage [de]
\setupcolors[state=start]

\usemodule[tikz]

\definecolor[zeug][r=1, g=0, b=0]

\starttext

\starttikzpicture
	 \draw [zeug, line width=1ex, cap=round] (-7.65cm,-1mm) -- (7.65cm,-1mm);
\stoptikzpicture

\stoptext
>>>

When I compile my document with "texexec --lua" I get a black line.

Adding "\setfontfeature{oldstyle}" to the preamble causes "texexec
--lua" to break with a failure.

>>>
Package pgfbase: Error! Unsupported color model `'. Sorry.
error: ...text/tex/texmf-context/tex/context/base/font-otf.lua:1998:
attempt to index local 'tfmdata' (a nil value)
.
\endpgfpicture ... \pgf@y }\endgroup \hss \egroup
                                                  \pgf@insertlayers \endgrou...
>>>

Does anyone know how this comes?

Regards,
Eyke
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