restricted system commands enabled.
(./lua-align-head-props.tex
a: glue seen=nil
a: glue seen=a
b: glue seen=nil
u: glue seen=nil
i: glue seen=nil
d: glue seen=u
c: glue seen=ud
e: glue seen=nil)
No pages of output.
Transcript written on lua-align-head-props.log.