[sigzero]

You can put those on one line...and I do the same. :)

[graywh]

Only if the order is the same. E.g.

  :set go=aAcegimtv
  :set go-=vtmigecAa
  :set go? " guioptions=aAcegimtv

[dlitz]

You can do it like this, though:

  set go-=T go-=r go-=L

[sigzero]

Interesting that the vim docs say nothing of order.