Optimize split implementation, avoid growing strings char by char
Optimize split implementation, avoid growing strings char by char

danr/kakoune,ekie/kakoune,jjthrash/kakoune,ekie/kakoune,mawww/kakoune,alexherbo2/kakoune,ekie/kakoune,casimir/kakoune,casimir/kakoune,jkonecny12/kakoune,alexherbo2/kakoune,lenormf/kakoune,Somasis/kakoune,alexherbo2/kakoune,flavius/kakoune,casimir/kakoune,jkonecny12/kakoune,danr/kakoune,ekie/kakoune,Somasis/kakoune,lenormf/kakoune,lenormf/kakoune,mawww/kakoune,occivink/kakoune,jkonecny12/kakoune,flavius/kakoune,lenormf/kakoune,Somasis/kakoune,Somasis/kakoune,mawww/kakoune,jkonecny12/kakoune,occivink/kakoune,jjthrash/kakoune,jjthrash/kakoune,mawww/kakoune,occivink/kakoune,casimir/kakoune,alexherbo2/kakoune,danr/kakoune,occivink/kakoune,jjthrash/kakoune,danr/kakoune,flavius/kakoune,flavius/kakoune