anchor.diff:  
     br
   
  -  //- mn-select#whatever(placeholder='Whatever')
  +  mn-select#whatever(placeholder='Whatever')
       option(value='1' selected) Lorem ipsum
       option(value='2') dolor sit amet lorem lorem dolor sit amet lorem lorem
       option(value='3') lero lero
  
positive.code: 
    br
  
    //- mn-select#options
      option(value='1') Option 1
      option(value='2') Option 2
      option(value='3') Option 3
  
negative.code:     }
  body
    h1 mn-select
    
    mn-select#gender(placeholder='Sexo')
      option(value='male') Masculino
      option(value='female') Feminino
  
    //- form
      mn-select#gender(placeholder='Sexo' name='gender' required)
        option(value='male') Masculino
        option(value='female') Feminino
  