When talking about or referring to someone who could either be a male or a female, I usually write it as (s)he but I have also seen usage like he/she, which also seems correct to me. I use (s)he ...
I recently saw the word 'compatriate' used in a newspaper article. Upon looking it up, suspecting a typo (or even an eggcorn: it is easy to see how compatriot would be mixed-up with expatriate etc.), ...