[XeTeX] tabular in footnote

[Daniel Greenhoe]

When I put a tabular in a footnote, the tabular often is extended
outside the text area. Besides placing a newline directive after the
tabular environment, is there anything I can do to prevent this
behavior? That is, how can I best ensure that tabulars in a footnote
get typeset completely within the text area? Here is an example:

\documentclass[12pt]{book}
\usepackage[xetex,a4paper,noheadfoot,nomarginpar,margin=20mm,showframe]{geometry}
\begin{document}%
  xyz\footnote{%
    %\raisebox{2.5mm}{
      \begin{tabular}[t]{|l|}
       \hline
        abc\\
        def\\
        ghj\\
        klm\\
        \hline
      \end{tabular}%\\
      %}%
    }
  xyz\footnote{%
    %\raisebox{2.5mm}{
      \begin{tabular}[t]{|l|}
       \hline
        abc\\
        def\\
        ghj\\
        klm\\
        \hline
      \end{tabular}%\\
      %}%
    }
\end{document}%

Many thanks in advance,
Dan
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