[luatex] glyph width with palt + kern features

[Hironori KITAGAWA]

Hello,

I typeset the following source with XeTeX and LuaTeX:

%%% palt_kern.tex
\ifdefined\directlua\input luaotfload.sty\fi
\font\G=SourceHanSansJP-Regular:+palt;-kern at 100pt
\hbox{\G \vrule とつ\vrule}% (A)

\font\G=SourceHanSansJP-Regular:+palt;+kern at 100pt
\hbox{\G \vrule とつ\vrule}% (B)

\end
%%%

In the output by XeTeX (palt_kern_xe.pdf),
the second line of output (B) is slightly shorter then the first line (A).

However, the output by LuaTeX r5074 + luaotfload v2.5 
(palt_kern_lotf.pdf) does not so. I also tested with
context -fmt=luatex-plain, but the result is same.


Regards 
Hironori KITAGAWA <h_kitagawa2001 at yahoo.co.jp>
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