Keep does nothing if an empty regex is entered (rather than crashing)
Keep does nothing if an empty regex is entered (rather than crashing)

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