Forums Scripts & Popups Delete repeated words Regex?

Simo's code doesn't work correctly, your example is also incorrect as it doesn't contain the same word twice. Here is something that works, it deletes from the left:

//echo -a $regsubex(Nickname1 Nickname1 Nickname2 Nickname3 Nickname2 Nickname1,/(?:\G| )([^ ]+) (?=(?:\1|.* \1)(?: |$))/gSi,)