The double-width emoji bug has at least been fixed as of 2016 & the Unicode 9 release. That string works fine in my VTE based gnome-terminal today.
(I was the one who finally prodded the relevant Unicode cttee into fixing this bug. They did all the heavy lifting of writing proposals and steering the change through though: Thanks Ken et al!)
(I was the one who finally prodded the relevant Unicode cttee into fixing this bug. They did all the heavy lifting of writing proposals and steering the change through though: Thanks Ken et al!)