remove_empty_head_lines

# File lib/rdoc/parser/f95.rb, line 1615
  def remove_empty_head_lines(text)
    return "" unless text
    lines = text.split("\n")
    header = true
    lines.delete_if{ |line|
      header = false if /\S/ =~ line
      header && /^\s*?$/ =~ line
    }
    lines.join("\n")
  end