Hi,when compiling the following mwe with luatex [Version beta-0.70.2-2012052410 (TeX Live 2012)], the "foo" word is not in the baseline in the pdf output:
%%%%%%%%%%%%%%%%%%
Begining
\vbox{%
\hbox{myfoobar}%
\hrule width0pt depth0pt height5pt
\hbox{foo}%
}
the end.
\bye
%%%%%%%%%%%%%%%%%%
It seems that the \hrule is placed at the bottom of the \vbox instead
between the \hbox's.
Sorry for the noise if it is a known bug. Christian
