complete_buffername try regex matching when prefix matching does not work
complete_buffername try regex matching when prefix matching does not work

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