Minor BufferCompleter refactoring
Minor BufferCompleter refactoring

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