Fix inserting of HTML gutter markers
Fix inserting of HTML gutter markers

Closes #703

trumanliu/CodeMirror,Allenice/CodeMirror,ThebingServices/CodeMirror,flyskyko/CodeMirror,notepadqq/CodeMirror,kangkot/CodeMirror,xeronith/CodeMirror,bfrohs/CodeMirror,Navaneethsen/CodeMirror,belph/CodeMirror,Ermlab/CodeMirror,cben/CodeMirror,pjkui/CodeMirror,NumbersInternational/CodeMirror,karevn/CodeMirror,sekcheong/CodeMirror,InternetGuru/CodeMirror,dperetti/CodeMirror,MarcelGerber/CodeMirror,AlanWasTaken/codemirror,apatawari/CodeMirror,NeZaMy/CodeMirror2,kerabromsmu/CodeMirror,sourcelair/CodeMirror,codio/CodeMirror,axter/CodeMirror,rrandom/CodeMirror,manderson23/CodeMirror,abdelouahabb/CodeMirror,isdampe/CodeMirror,filonb/CodeMirror2,karevn/CodeMirror,systay/CodeMirror,Carreau/CodeMirror,kerabromsmu/CodeMirror,explorigin/CodeMirror,EasonYi/CodeMirror,supriyantomaftuh/CodeMirror,axter/CodeMirror,Navaneethsen/CodeMirror,schanzer/CodeMirror,amshali/CodeMirror,philuchansky/CodeMirror,vincentwoo/CodeMirror,kk9599/CodeMirror,antimatter15/CodeMirror,jansel/CodeMirror,SidPresse/CodeMirror,dbarnett/CodeMirror,bocharsky-bw/CodeMirror,notepadqq/CodeMirror,nawroth/CodeMirror,symbla/CodeMirror,sgoo/CodeMirror,philuchansky/CodeMirror,jkaplon/CodeMirror,dudb/CodeMirror,kk9599/CodeMirror,sanyaade-iot/CodeMirror,explorigin/CodeMirror,jochenberger/CodeMirror,SidPresse/CodeMirror,happibum/CodeMirror-main,sgoo/CodeMirror,shiren/CodeMirror,mightyguava/CodeMirror,ficristo/CodeMirror,nightwing/CodeMirror,sanyaade-iot/CodeMirror,EasonYi/CodeMirror,belph/CodeMirror,mightyguava/CodeMirror,DustinH/CodeMirror,anthonygego/CodeMirror,TechnicalPursuit/CodeMirror,ashmind/CodeMirror,ksanaforge/CodeMirror,kuangyeheng/CodeMirror,EasonYi/CodeMirror,fpco/codemirror,ficristo/CodeMirror,nawroth/CodeMirror,mihailik/CodeMirror,skylarkcob/CodeMirror,adobe/CodeMirror2,flyskyko/CodeMirror,ZombieHippie/CodeMirror,abdelouahabb/CodeMirror,Dominator008/CodeMirror,alur/CodeMirror,notepadqq/CodeMirror,apatawari/CodeMirror,increpare/CodeMirror,bluesh55/CodeMirror,elisee/CodeMirror,wingify/CodeMirror,femhub/CodeMirror2,morrisonwudi/CodeMirror,vanloswang/CodeMirror,amshali/CodeMirror,webida/CodeMirror,Aliccer/CodeMirror,grzegorzmazur/CodeMirror,agendor/CodeMirror,TechnicalPursuit/CodeMirror,gkoberger/CodeMirror,kangkot/CodeMirror,jkaplon/CodeMirror,elisee/CodeMirror,Navaneethsen/CodeMirror,rasata/CodeMirror,KamranMackey/CodeMirror,r7kamura/CodeMirror,ejgallego/CodeMirror,skylarkcob/CodeMirror,kerabromsmu/CodeMirror,qweasd1/CodeMirror,increpare/CodeMirror,mtaran-google/CodeMirror,xeronith/CodeMirror,ssxxue/CodeMirror,camellhf/CodeMirror,cben/CodeMirror,tpphu/CodeMirror,jkaplon/CodeMirror,codio/CodeMirror,ksanaforge/CodeMirror,systay/CodeMirror,bgrins/CodeMirror,DustinH/CodeMirror,hackmdio/CodeMirror,buchslava/CodeMirror,cintiamh/CodeMirror,pjkui/CodeMirror,qiankun007/CodeMirror,wingify/CodeMirror,increpare/CodeMirror,Jisuanke/CodeMirror,webida/CodeMirror,pjkui/CodeMirror,amireh/codemirror,antimatter15/CodeMirror,d0liver/CodeMirror,jpolitz/CodeMirror,agendor/CodeMirror,vanloswang/CodeMirror,joshterrell805-historic/CodeMirror,webida/CodeMirror,crazy4chrissi/CodeMirror,pabloferz/CodeMirror,belph/CodeMirror,pinbe/CodeMirror,sanyaade-iot/CodeMirror,codio/CodeMirror,ashmind/CodeMirror,AlanWasTaken/codemirror,supriyantomaftuh/CodeMirror,d0liver/CodeMirror,nawroth/CodeMirror,ssxxue/CodeMirror,nightwing/CodeMirror,TechnicalPursuit/CodeMirror,xeronith/CodeMirror,r7kamura/CodeMirror,angelozerr/CodeMirror,happibum/CodeMirror-main,KamranMackey/CodeMirror,fpco/codemirror,rustemferreira/CodeMirror,ThebingServices/CodeMirror,filonb/CodeMirror2,hccampos/CodeMirror,rasata/CodeMirror,Icenium/CodeMirror,webida/CodeMirror,schanzer/CodeMirror,Aliccer/CodeMirror,shiren/CodeMirror,djadmin/CodeMirror,isdampe/CodeMirror,antimatter15/CodeMirror,NeZaMy/CodeMirror2,flyskyko/CodeMirror,thomasjm/CodeMirror,pinbe/CodeMirror,morrisonwudi/CodeMirror,michaelerobertsjr/CodeMirror,rustemferreira/CodeMirror,jpolitz/CodeMirror,GerHobbelt/CodeMirror2,trumanliu/CodeMirror,tpphu/CodeMirror,thomasjm/CodeMirror,isdampe/CodeMirror,Allenice/CodeMirror,axter/CodeMirror,INTELOGIE/CodeMirror,leoshine/CodeMirror,dudb/CodeMirror,supriyantomaftuh/CodeMirror,qiankun007/CodeMirror,ficristo/CodeMirror,nightwing/CodeMirror,jessegrosjean/CodeMirror,wingify/CodeMirror,alur/CodeMirror,jochenberger/CodeMirror,thomasjm/CodeMirror,elisee/CodeMirror,wbinnssmith/CodeMirror,kk9599/CodeMirror,bluesh55/CodeMirror,rrandom/CodeMirror,manderson23/CodeMirror,femhub/CodeMirror2,ssxxue/CodeMirror,adobe/CodeMirror2,d0liver/CodeMirror,alur/CodeMirror,GerHobbelt/CodeMirror2,skylarkcob/CodeMirror,jessegrosjean/CodeMirror,TDaglis/CodeMirror,qweasd1/CodeMirror,matthewbauer/CodeMirror,Dominator008/CodeMirror,fmoliveira/CodeMirror,abdelouahabb/CodeMirror,AlanWasTaken/codemirror,philuchansky/CodeMirror,Ermlab/CodeMirror,crazy4chrissi/CodeMirror,Icenium/CodeMirror,ashmind/CodeMirror,ejgallego/CodeMirror,mizchi/CodeMirror,amsul/CodeMirror,cintiamh/CodeMirror,karthikeyansam/CodeMirror,systay/CodeMirror,bfrohs/CodeMirror,MarcelGerber/CodeMirr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