block_end?

# File lib/rdoc/parser/f95.rb, line 1574
  def block_end?(line)
    return nil if !line

    if line =~ /^\s*?end\s*?(!.*?)?$/                 ||
        line =~ /^\s*?end\s+module(\s+\w+)?\s*?(!.*?)?$/       ||
        line =~ /^\s*?end\s+program(\s+\w+)?\s*?(!.*?)?$/      ||
        line =~ /^\s*?end\s+block\s+data(\s+\w+)?\s*?(!.*?)?$/  ||
        line =~ /^\s*?end\s+subroutine(\s+\w+)?\s*?(!.*?)?$/   ||
        line =~ /^\s*?end\s+function(\s+\w+)?\s*?(!.*?)?$/
      return true
    end

    return nil
  end