array_column_specs.test

<<< tex
\begin{array}{p{2cm}|>{\bf}c<{x}m{0.4\textwidth}r}
a & b & c & d \\
e & f & g & h
\end{array}
>>> native
[ EArray
    [ AlignLeft , AlignCenter , AlignLeft , AlignRight ]
    [ [ [ EIdentifier "a" ]
      , [ EIdentifier "b" ]
      , [ EIdentifier "c" ]
      , [ EIdentifier "d" ]
      ]
    , [ [ EIdentifier "e" ]
      , [ EIdentifier "f" ]
      , [ EIdentifier "g" ]
      , [ EIdentifier "h" ]
      ]
    ]
]