pandoc/test/command/latex-tabular-column-specs.md

See https://groups.google.com/forum/#!topic/pandoc-discuss/_VXtqihCyDU.

```
% pandoc -f latex -t native
\begin{tabular}{>{$}l<{$}>{$}l<{$} >{$}l<{$}}
\toprule
& f1 & f2 \\
\midrule
e      & 0.5    &  4   \\
f      & 0.5    & 5,5  \\
\bottomrule
\end{tabular}
^D
[ Table
  ( "", [], [] )
  ( Caption Nothing [] )
  [
    ( AlignLeft, ColWidthDefault )
  ,
    ( AlignLeft, ColWidthDefault )
  ,
    ( AlignLeft, ColWidthDefault )
  ]
  ( TableHead
    ( "", [], [] )
    [ Row
      ( "", [], [] )
      [ Cell
        ( "", [], [] ) AlignDefault
        ( RowSpan 1 )
        ( ColSpan 1 )
        [ Plain [ Math InlineMath "" ] ]
      , Cell
        ( "", [], [] ) AlignDefault
        ( RowSpan 1 )
        ( ColSpan 1 )
        [ Plain [ Math InlineMath "f1" ] ]
      , Cell
        ( "", [], [] ) AlignDefault
        ( RowSpan 1 )
        ( ColSpan 1 )
        [ Plain [ Math InlineMath "f2" ] ]
      ]
    ]
  )
  [ TableBody
    ( "", [], [] )
    ( RowHeadColumns 0 ) []
    [ Row
      ( "", [], [] )
      [ Cell
        ( "", [], [] ) AlignDefault
        ( RowSpan 1 )
        ( ColSpan 1 )
        [ Plain [ Math InlineMath "e" ] ]
      , Cell
        ( "", [], [] ) AlignDefault
        ( RowSpan 1 )
        ( ColSpan 1 )
        [ Plain [ Math InlineMath "0.5" ] ]
      , Cell
        ( "", [], [] ) AlignDefault
        ( RowSpan 1 )
        ( ColSpan 1 )
        [ Plain [ Math InlineMath "4" ] ]
      ]
    , Row
      ( "", [], [] )
      [ Cell
        ( "", [], [] ) AlignDefault
        ( RowSpan 1 )
        ( ColSpan 1 )
        [ Plain [ Math InlineMath "f" ] ]
      , Cell
        ( "", [], [] ) AlignDefault
        ( RowSpan 1 )
        ( ColSpan 1 )
        [ Plain [ Math InlineMath "0.5" ] ]
      , Cell
        ( "", [], [] ) AlignDefault
        ( RowSpan 1 )
        ( ColSpan 1 )
        [ Plain [ Math InlineMath "5,5" ] ]
      ]
    ]
  ]
  ( TableFoot ( "", [], [] ) [] )
]
```