add test for allowing 4 underscores in markdown
add test for allowing 4 underscores in markdown

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velimir0xff/Ghost,Japh/Ghost,wspandihai/Ghost,javimolla/Ghost,e10/Ghost,thomasalrin/Ghost,mttschltz/ghostblog,halfdan/Ghost,melissaroman/ghost-blog,johngeorgewright/blog.j-g-w.info,tmp-reg/Ghost,darvelo/Ghost,bosung90/Ghost,kmeurer/GhostAzureSetup,francisco-filho/Ghost,hyokosdeveloper/Ghost,ghostchina/Ghost-zh,sebgie/Ghost,dggr/Ghost-sr,r1N0Xmk2/Ghost,acburdine/Ghost,stridespace/Ghost,acburdine/Ghost,johngeorgewright/blog.j-g-w.info,singular78/Ghost,claudiordgz/Ghost,mhhf/ghost-latex,exsodus3249/Ghost,jparyani/GhostSS,ygbhf/Ghost,ananthhh/Ghost,bastianbin/Ghost,exsodus3249/Ghost,BayPhillips/Ghost,arvidsvensson/Ghost,rameshponnada/Ghost,telco2011/Ghost,Kaenn/Ghost,FredericBernardo/Ghost,davegw/dgw-website,cncodog/Ghost-zh-codog,delgermurun/Ghost,kmeurer/Ghost,lowkeyfred/Ghost,praveenscience/Ghost,jgillich/Ghost,benstoltz/Ghost,AnthonyCorrado/Ghost,petersucks/blog,MrMaksimize/sdg1,tanbo800/Ghost,Japh/shortcoffee,SachaG/bjjbot-blog,UnbounDev/Ghost,atandon/Ghost,JonSmith/Ghost,cysys/ghost-openshift,JohnONolan/Ghost,daimaqiao/Ghost-Bridge,situkangsayur/Ghost,Trendy/Ghost,smaty1/Ghost,ladislas/ghost,freele/ghost,nneko/Ghost,kwangkim/Ghost,claudiordgz/Ghost,ryanbrunner/crafters,Feitianyuan/Ghost,ineitzke/Ghost,ddeveloperr/Ghost,Netazoic/bad-gateway,sunh3/Ghost,rollokb/Ghost,ManRueda/manrueda-blog,mdbw/ghost,Dnlyc/Ghost,telco2011/Ghost,RoopaS/demo-intern,ThorstenHans/Ghost,memezilla/Ghost,TryGhost/Ghost,patterncoder/patterncoder,virtuallyearthed/Ghost,mttschltz/ghostblog,ivantedja/ghost,greenboxindonesia/Ghost,zackslash/Ghost,consoleblog/consoleblog,skmezanul/Ghost,situkangsayur/Ghost,augbog/Ghost,darvelo/Ghost,skleung/blog,JulienBrks/Ghost,Romdeau/Ghost,novaugust/Ghost,icowan/Ghost,RufusMbugua/TheoryOfACoder,ngosinafrica/SiteForNGOs,SkynetInc/steam,ManRueda/Ghost,riyadhalnur/Ghost,zhiyishou/Ghost,halfdan/Ghost,YY030913/Ghost,notno/Ghost,Elektro1776/javaPress,anijap/PhotoGhost,gleneivey/Ghost,rmoorman/Ghost,telco2011/Ghost,PaulBGD/Ghost-Plus,uniqname/everydaydelicious,handcode7/Ghost,mlabieniec/ghost-env,Netazoic/bad-gateway,Azzurrio/Ghost,sceltoas/Ghost,jeonghwan-kim/Ghost,etdev/blog,leonli/ghost,optikalefx/Ghost,bisoe/Ghost,gcamana/Ghost,ryanorsinger/tryghost,load11/ghost,BlueHatbRit/Ghost,ckousik/Ghost,kmeurer/Ghost,kaychaks/kaushikc.org,codeincarnate/Ghost,imjerrybao/Ghost,trepafi/ghost-base,psychobunny/Ghost,sceltoas/Ghost,greyhwndz/Ghost,ballPointPenguin/Ghost,petersucks/blog,disordinary/Ghost,cicorias/Ghost,sergeylukin/Ghost,JulienBrks/Ghost,hoxoa/Ghost,mohanambati/Ghost,rchrd2/Ghost,ASwitlyk/Ghost,Sing-Li/GhostSS,allanjsx/Ghost,yujingz/yujignz.com,gcamana/Ghost,shrimpy/Ghost,netputer/Ghost,ivanoats/ivanstorck.com,dgem/Ghost,andrewconnell/Ghost,Kikobeats/Ghost,hnq90/Ghost,allanjsx/Ghost,v3rt1go/Ghost,javimolla/Ghost,davidmenger/nodejsfan,dqj/Ghost,diancloud/Ghost,jparyani/GhostSS,bbmepic/Ghost,PepijnSenders/whatsontheotherside,uploadcare/uploadcare-ghost-demo,nneko/Ghost,wemakeweb/Ghost,weareleka/blog,dqj/Ghost,aroneiermann/GhostJade,blankmaker/Ghost,rafaelstz/Ghost,no1lov3sme/Ghost,zhiyishou/Ghost,chevex/undoctrinate,PepijnSenders/whatsontheotherside,adam-paterson/blog,ljhsai/Ghost,llv22/Ghost,lowkeyfred/Ghost,ashishapy/ghostpy,davidmenger/nodejsfan,bastianbin/Ghost,sebgie/Ghost,rollokb/Ghost,dYale/blog,thinq4yourself/Unmistakable-Blog,TryGhost/Ghost,trunk-studio/Ghost,adam-paterson/blog,julianromera/Ghost,TribeMedia/Ghost,laispace/laiblog,codeincarnate/Ghost,Elektro1776/javaPress,rito/Ghost,olsio/Ghost,MadeOnMars/Ghost,leninhasda/Ghost,woodyrew/Ghost,kolorahl/Ghost,Smile42RU/Ghost,ghostchina/website,kaychaks/kaushikc.org,jomahoney/Ghost,load11/ghost,carlyledavis/Ghost,Dnlyc/Ghost,virtuallyearthed/Ghost,makapen/Ghost,influitive/crafters,cysys/ghost-openshift,mnitchie/Ghost,Brunation11/Ghost,aroneiermann/GhostJade,sankumsek/Ghost-ashram,bsansouci/Ghost,zeropaper/Ghost,achimos/ghost_as,theonlypat/Ghost,lanffy/Ghost,DesenTao/Ghost,mohanambati/Ghost,LeandroNascimento/Ghost,tuan/Ghost,davidenq/Ghost-Blog,dggr/Ghost-sr,omaracrystal/Ghost,mikecastro26/ghost-custom,Netazoic/bad-gateway,InnoD-WebTier/hardboiled_ghost,10hacks/blog,cncodog/Ghost-zh-codog,cncodog/Ghost-zh-codog,VillainyStudios/Ghost,tyrikio/Ghost,schematical/Ghost,rafaelstz/Ghost,johnnymitch/Ghost,e10/Ghost,hawkrives/Wraith,dai-shi/Ghost,jamesyothers/Ghost,tidyui/Ghost,ErisDS/Ghost,bosung90/Ghost,allspiritseve/mindlikewater,ddeveloperr/Ghost,cwonrails/Ghost,jorgegilmoreira/ghost,Sebastian1011/Ghost,netputer/Ghost,sangcu/Ghost,gleneivey/Ghost,mayconxhh/Ghost,jeonghwan-kim/Ghost,ckousik/Ghost,pbevin/Ghost,lanffy/Ghost,chris-yoon90/Ghost,manishchhabra/Ghost,Japh/Ghost,vainglori0us/urban-fortnight,camilodelvasto/herokughost,sajmoon/Ghost,Rovak/Ghost,phillipalexander/Ghost,JonathanZWhite/Ghost,JohnONolan/Ghost,kortemy/Ghost,jaswilli/Ghost,jgladch/taskworksource,zeropaper/Ghost,avh4/blog.avh4.net,carlosmtx/Ghost,ManRueda/Ghost,singular78/Ghost,bbmepic/Ghost,katrotz/blog.katrotz.space,prosenjit-itobuz/Ghost,choskim/GhostAzure,Brunation11/Ghost,dylanchernick/g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