--[[
  When a long footnote is inserted like this^[
    Here is my footnote.
    It spans several lines!
  ], Pandoc retains the initial line break in the AST,
  causing the insertion of a space
  at the beginning of the footnote in the output.
  This filter removes any line break
  at the beginning of a footnote.
]]--

function Note(note)
  local content = note.content[1].content
  if content[1].t == 'SoftBreak' then table.remove(content, 1) end
  return note
end