if ((you.char_class = letter_to_class(keyn)) == JOB_UNKNOWN) 

    
    job_type chosen_job = JOB_UNKNOWN;
    if ((chosen_job = letter_to_class(keyn)) == JOB_UNKNOWN) 

            you.char_class = job;

            chosen_job = job;

        && !class_allowed(you.species, you.char_class))

        && !class_allowed(you.species, chosen_job))

    you.char_class = chosen_job;