-- Render content below header in three columns

local multicol_begin = pandoc.RawBlock('latex', [[
\begin{multicols}{3}\raggedcolumns
]])
local multicol_end = pandoc.RawBlock('latex', [[
\end{multicols}
]])

local multicol_now = false

-- TODO: include header level 2 and author paragraph above multicolumn
function is_author(elem)
    return elem.t == Para and elem.content[1].text == "Forfatter:"
end

function multicol_delimit(elem)
    if multicol_now == true then
      return {multicol_end, elem, multicol_begin}
    else
      multicol_now = true
      return {elem, multicol_begin}
    end
end

function Header(elem)
  if FORMAT:match 'latex' then
    if elem.level == 1 then
      return multicol_delimit(elem)
    end
  end
end

function HorizontalRule(elem)
  if FORMAT:match 'latex' then
    return multicol_delimit(elem)
  end
end

function Pandoc(doc)
  if FORMAT:match 'latex' then
    if multicol_now == true then
      doc.blocks:insert(multicol_end)
      return doc
    end
  end
end