substitute_into

# File lib/rdoc/template.rb, line 161
  def substitute_into(lines, values)
    @context.push(values)
    skip_to = nil
    result = []

    while line = lines.read

      case line

      when /^IF:(\w+)/
        lines.read_up_to(/^ENDIF:#$1/) unless @context.lookup($1)

    when /^IFNOT:(\w+)/
        lines.read_up_to(/^ENDIF:#$1/) if @context.lookup($1)

      when /^ENDIF:/
        ;

      when /^START:(\w+)/
        tag = $1
        body = lines.read_up_to(/^END:#{tag}/)
        inner_values = @context.lookup(tag)
        raise "unknown tag: #{tag}" unless inner_values
        raise "not array: #{tag}"   unless inner_values.kind_of?(Array)
        inner_values.each do |vals|
          result << substitute_into(body.dup, vals)
        end
      else
        result << expand_line(line.dup)
      end
    end

    @context.pop

    result.join("\n")
  end