[luatex] Dimensions of sub-boxes?

[Eduardo Ochs]

Hi list,

sorry, I know that this _should_ be trivial but I can't figure out how
to do it from the manual...

Suppose that I set the box 0 by running this:

  \setbox0\hbox{%
    \hbox{a}%
    \hbox{bcde}%
    \hbox{fg}%
  }

How do I get - from Lua - number of sub-boxes of box0 and the width,
the height and the depth of each one?

  Thanks!
    Eduardo Ochs
    http://angg.twu.net/dednat6.html
    http://angg.twu.net/math-b.html
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