class RDoc::Markup::PreProcess

def include_file(name, indent)
  if full_name = find_include_file(name) then
    content = if defined?(Encoding) then
                File.binread full_name
              else
                File.read full_name
              end
    # HACK determine content type and force encoding
    content = content.sub(/\A# .*coding[=:].*$/, '').lstrip
    # strip leading '#'s, but only if all lines start with them
    if content =~ /^[^#]/ then
      content.gsub(/^/, indent)
    else
      content.gsub(/^#?/, indent)
    end
  else
    warn "Couldn't find file to include '#{name}' from #{@input_file_name}"
    ''
  end
end