fix contains for empty containers
fix contains for empty containers

flavius/kakoune,xificurC/kakoune,jjthrash/kakoune,Somasis/kakoune,zakgreant/kakoune,jkonecny12/kakoune,alpha123/kakoune,zakgreant/kakoune,occivink/kakoune,danr/kakoune,flavius/kakoune,casimir/kakoune,alexherbo2/kakoune,Somasis/kakoune,danielma/kakoune,occivink/kakoune,occivink/kakoune,danr/kakoune,elegios/kakoune,elegios/kakoune,Somasis/kakoune,danielma/kakoune,alexherbo2/kakoune,ekie/kakoune,alpha123/kakoune,lenormf/kakoune,ekie/kakoune,jjthrash/kakoune,mawww/kakoune,xificurC/kakoune,ekie/kakoune,mawww/kakoune,alpha123/kakoune,occivink/kakoune,ekie/kakoune,Somasis/kakoune,danr/kakoune,rstacruz/kakoune,mawww/kakoune,danr/kakoune,alexherbo2/kakoune,jkonecny12/kakoune,zakgreant/kakoune,jkonecny12/kakoune,Asenar/kakoune,jjthrash/kakoune,lenormf/kakoune,jkonecny12/kakoune,rstacruz/kakoune,elegios/kakoune,lenormf/kakoune,alexherbo2/kakoune,casimir/kakoune,xificurC/kakoune,danielma/kakoune,xificurC/kakoune,danielma/kakoune,rstacruz/kakoune,Asenar/kakoune,rstacruz/kakoune,flavius/kakoune,casimir/kakoune,casimir/kakoune,elegios/kakoune,Asenar/kakoune,Asenar/kakoune,lenormf/kakoune,jjthrash/kakoune,flavius/kakoune,alpha123/kakoune,mawww/kakoune,zakgreant/kakoune