expand_unprintable: use iscntrl rather than isprint which does not work as expected
expand_unprintable: use iscntrl rather than isprint which does not work as expected

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