Pretty: use replicate for spaces and multi_ch (#10735)
Pretty: use replicate for spaces and multi_ch (#10735)

Similar changes were made to pretty in commit
7575ab16430c876eaa1451b02465b6b103b3a519.

sgillespie/ghc,elieux/ghc,oldmanmike/ghc,ml9951/ghc,ml9951/ghc,mettekou/ghc,ezyang/ghc,vikraman/ghc,acowley/ghc,vTurbine/ghc,nkaretnikov/ghc,mfine/ghc,sdiehl/ghc,acowley/ghc,TomMD/ghc,AlexanderPankiv/ghc,gridaphobe/ghc,vikraman/ghc,vikraman/ghc,mettekou/ghc,snoyberg/ghc,snoyberg/ghc,ml9951/ghc,vTurbine/ghc,ml9951/ghc,sdiehl/ghc,GaloisInc/halvm-ghc,vikraman/ghc,wxwxwwxxx/ghc,gridaphobe/ghc,tjakway/ghcjvm,mettekou/ghc,shlevy/ghc,wxwxwwxxx/ghc,AlexanderPankiv/ghc,ezyang/ghc,sdiehl/ghc,snoyberg/ghc,siddhanathan/ghc,mfine/ghc,anton-dessiatov/ghc,da-x/ghc,siddhanathan/ghc,da-x/ghc,da-x/ghc,ghc-android/ghc,gridaphobe/ghc,sgillespie/ghc,sgillespie/ghc,wxwxwwxxx/ghc,mfine/ghc,sdiehl/ghc,nushio3/ghc,nushio3/ghc,vikraman/ghc,elieux/ghc,vTurbine/ghc,acowley/ghc,anton-dessiatov/ghc,siddhanathan/ghc,ghc-android/ghc,oldmanmike/ghc,mettekou/ghc,AlexanderPankiv/ghc,snoyberg/ghc,shlevy/ghc,AlexanderPankiv/ghc,vikraman/ghc,oldmanmike/ghc,shlevy/ghc,elieux/ghc,olsner/ghc,mcschroeder/ghc,gridaphobe/ghc,anton-dessiatov/ghc,nushio3/ghc,olsner/ghc,oldmanmike/ghc,sgillespie/ghc,acowley/ghc,mettekou/ghc,snoyberg/ghc,nkaretnikov/ghc,shlevy/ghc,mcschroeder/ghc,oldmanmike/ghc,mfine/ghc,snoyberg/ghc,tjakway/ghcjvm,siddhanathan/ghc,vikraman/ghc,anton-dessiatov/ghc,TomMD/ghc,shlevy/ghc,anton-dessiatov/ghc,siddhanathan/ghc,AlexanderPankiv/ghc,vTurbine/ghc,sdiehl/ghc,GaloisInc/halvm-ghc,tjakway/ghcjvm,olsner/ghc,tjakway/ghcjvm,ghc-android/ghc,tjakway/ghcjvm,mettekou/ghc,wxwxwwxxx/ghc,sgillespie/ghc,ghc-android/ghc,wxwxwwxxx/ghc,elieux/ghc,sdiehl/ghc,GaloisInc/halvm-ghc,ml9951/ghc,GaloisInc/halvm-ghc,snoyberg/ghc,da-x/ghc,ezyang/ghc,vTurbine/ghc,olsner/ghc,TomMD/ghc,ezyang/ghc,nkaretnikov/ghc,nkaretnikov/ghc,nkaretnikov/ghc,nushio3/ghc,ml9951/ghc,GaloisInc/halvm-ghc,acowley/ghc,GaloisInc/halvm-ghc,nushio3/ghc,wxwxwwxxx/ghc,mfine/ghc,elieux/ghc,da-x/ghc,mcschroeder/ghc,oldmanmike/ghc,ghc-android/ghc,mcschroeder/ghc,gridaphobe/ghc,vTurbine/ghc,siddhanathan/ghc,mcschroeder/ghc,mcschroeder/ghc,acowley/ghc,tjakway/ghcjvm,anton-dessiatov/ghc,siddhanathan/ghc,sgillespie/ghc,TomMD/ghc,shlevy/ghc,sdiehl/ghc,oldmanmike/ghc,olsner/ghc,elieux/ghc,ezyang/ghc,ezyang/ghc,AlexanderPankiv/ghc,ml9951/ghc,nushio3/ghc,mcschroeder/ghc,ezyang/ghc,nushio3/ghc,anton-dessiatov/ghc,sgillespie/ghc,tjakway/ghcjvm,da-x/ghc,mfine/ghc,elieux/ghc,acowley/ghc,TomMD/ghc,olsner/ghc,ml9951/ghc,shlevy/ghc,olsner/ghc,nkaretnikov/ghc,TomMD/ghc,mettekou/ghc,wxwxwwxxx/ghc,GaloisInc/halvm-ghc,ghc-android/ghc,mfine/ghc,gridaphobe/ghc,AlexanderPankiv/ghc,nkaretnikov/ghc,da-x/ghc,TomMD/ghc,gridaphobe/ghc,ghc-android/ghc,vTurbine/ghc