[demo-tool] Add support for backspacing.
[demo-tool] Add support for backspacing.

Swift SVN r18618

glessard/swift,arvedviehweger/swift,tardieu/swift,IngmarStein/swift,jopamer/swift,johnno1962d/swift,xedin/swift,nathawes/swift,mightydeveloper/swift,shahmishal/swift,tkremenek/swift,benlangmuir/swift,russbishop/swift,swiftix/swift.old,kperryua/swift,codestergit/swift,huonw/swift,glessard/swift,swiftix/swift.old,shahmishal/swift,sschiau/swift,swiftix/swift,roambotics/swift,hooman/swift,CodaFi/swift,slavapestov/swift,shahmishal/swift,milseman/swift,Jnosh/swift,emilstahl/swift,kstaring/swift,swiftix/swift,allevato/swift,kentya6/swift,karwa/swift,ben-ng/swift,huonw/swift,MukeshKumarS/Swift,sdulal/swift,huonw/swift,devincoughlin/swift,aschwaighofer/swift,felix91gr/swift,return/swift,jopamer/swift,rudkx/swift,cbrentharris/swift,bitjammer/swift,JaSpa/swift,dduan/swift,danielmartin/swift,CodaFi/swift,calebd/swift,aschwaighofer/swift,lorentey/swift,bitjammer/swift,IngmarStein/swift,emilstahl/swift,ben-ng/swift,ken0nek/swift,SwiftAndroid/swift,return/swift,milseman/swift,lorentey/swift,brentdax/swift,hooman/swift,MukeshKumarS/Swift,alblue/swift,kperryua/swift,JaSpa/swift,swiftix/swift.old,milseman/swift,ahoppen/swift,arvedviehweger/swift,parkera/swift,zisko/swift,sdulal/swift,adrfer/swift,practicalswift/swift,JaSpa/swift,Ivacker/swift,deyton/swift,rudkx/swift,gmilos/swift,milseman/swift,jtbandes/swift,natecook1000/swift,adrfer/swift,sschiau/swift,shajrawi/swift,JaSpa/swift,gribozavr/swift,khizkhiz/swift,hughbe/swift,karwa/swift,shajrawi/swift,calebd/swift,arvedviehweger/swift,felix91gr/swift,kperryua/swift,gottesmm/swift,russbishop/swift,tinysun212/swift-windows,ben-ng/swift,xwu/swift,dduan/swift,gottesmm/swift,apple/swift,codestergit/swift,natecook1000/swift,JGiola/swift,therealbnut/swift,parkera/swift,arvedviehweger/swift,jmgc/swift,slavapestov/swift,tardieu/swift,swiftix/swift.old,return/swift,roambotics/swift,practicalswift/swift,aschwaighofer/swift,tardieu/swift,dreamsxin/swift,lorentey/swift,amraboelela/swift,therealbnut/swift,hughbe/swift,swiftix/swift,frootloops/swift,CodaFi/swift,therealbnut/swift,aschwaighofer/swift,xwu/swift,benlangmuir/swift,JGiola/swift,frootloops/swift,kentya6/swift,gmilos/swift,xedin/swift,swiftix/swift,OscarSwanros/swift,shajrawi/swift,shajrawi/swift,KrishMunot/swift,russbishop/swift,gregomni/swift,kusl/swift,austinzheng/swift,gregomni/swift,gmilos/swift,kentya6/swift,stephentyrone/swift,modocache/swift,gregomni/swift,nathawes/swift,austinzheng/swift,mightydeveloper/swift,airspeedswift/swift,cbrentharris/swift,kentya6/swift,jckarter/swift,jmgc/swift,MukeshKumarS/Swift,jckarter/swift,stephentyrone/swift,ahoppen/swift,roambotics/swift,KrishMunot/swift,cbrentharris/swift,roambotics/swift,emilstahl/swift,bitjammer/swift,allevato/swift,kstaring/swift,djwbrown/swift,hughbe/swift,kentya6/swift,practicalswift/swift,cbrentharris/swift,kperryua/swift,modocache/swift,harlanhaskins/swift,xwu/swift,stephentyrone/swift,kentya6/swift,airspeedswift/swift,JGiola/swift,MukeshKumarS/Swift,benlangmuir/swift,xedin/swift,tkremenek/swift,airspeedswift/swift,bitjammer/swift,sdulal/swift,jtbandes/swift,alblue/swift,devincoughlin/swift,glessard/swift,jckarter/swift,sdulal/swift,nathawes/swift,Ivacker/swift,frootloops/swift,uasys/swift,allevato/swift,IngmarStein/swift,russbishop/swift,Ivacker/swift,manavgabhawala/swift,modocache/swift,Jnosh/swift,stephentyrone/swift,hughbe/swift,devincoughlin/swift,ben-ng/swift,karwa/swift,CodaFi/swift,codestergit/swift,benlangmuir/swift,therealbnut/swift,hooman/swift,devincoughlin/swift,jopamer/swift,bitjammer/swift,djwbrown/swift,alblue/swift,ahoppen/swift,hooman/swift,frootloops/swift,brentdax/swift,KrishMunot/swift,gottesmm/swift,sschiau/swift,gribozavr/swift,tkremenek/swift,russbishop/swift,danielmartin/swift,codestergit/swift,aschwaighofer/swift,russbishop/swift,slavapestov/swift,Ivacker/swift,return/swift,IngmarStein/swift,johnno1962d/swift,manavgabhawala/swift,parkera/swift,shahmishal/swift,sschiau/swift,austinzheng/swift,kusl/swift,OscarSwanros/swift,atrick/swift,xedin/swift,rudkx/swift,manavgabhawala/swift,therealbnut/swift,stephentyrone/swift,roambotics/swift,bitjammer/swift,aschwaighofer/swift,sschiau/swift,apple/swift,deyton/swift,tardieu/swift,zisko/swift,swiftix/swift.old,dduan/swift,return/swift,allevato/swift,calebd/swift,shajrawi/swift,djwbrown/swift,therealbnut/swift,djwbrown/swift,austinzheng/swift,gregomni/swift,jmgc/swift,frootloops/swift,tjw/swift,tkremenek/swift,jtbandes/swift,stephentyrone/swift,mightydeveloper/swift,khizkhiz/swift,Jnosh/swift,IngmarStein/swift,alblue/swift,JaSpa/swift,ken0nek/swift,danielmartin/swift,ken0nek/swift,hooman/swift,JaSpa/swift,therealbnut/swift,uasys/swift,jopamer/swift,modocache/swift,khizkhiz/swift,johnno1962d/swift,SwiftAndroid/swift,codestergit/swift,atrick/swift,dduan/swift,zisko/swift,practicalswift/swift,nathawes/swift,CodaFi/swift,johnno1962d/swift,emilstahl/swift,felix91gr/swift,sschiau/swift,tkremenek/swift,kusl/swift,xedin/swift,gribozavr/swift,shajrawi/swift,swiftix/swift,harlanhaskins/swift,emilstahl/swift,KrishMunot/swift,deyton/swift,tinysun212/swift-windows,calebd/swift,ben-ng/swift,swiftix/swift.old,parkera/swift,deyton/swift,mightydeveloper/swift,allevato/swift,adrfer/swift,tinysun212/swift-windows,devincoughlin/swift,emilstahl/swift,natecook1000/swift,jmgc/swift,KrishMunot/swift,danielmartin/swift,MukeshKumarS/Swift,atrick/swift,LeoShimonaka/swift,hughbe/swift,sschiau/swift,ahoppen/swift,aschwaighofer/swift,harlanhaskins/swift,jmgc/swift,tkremenek/swift,airspeedswift/swift,sdulal/swift,tjw/swift,devincoughlin/swift,adrfer/swift,jckarter/swift,ken0nek/swift,danielmartin/swift,Ivacker/swift,CodaFi/swift,mightydeveloper/swift,gribozavr/swift,kstaring/swift,SwiftAndroid/swift,zisko/swift,apple/swift,dduan/swift,tjw/swift,manavgabhawala/swift,natecook1000/swift,tinysun212/swift-windows,kentya6/swift,amraboelela/swift,jckarter/swift,djwbrown/swift,harlanhaskins/swift,kperryua/swift,gottesmm/swift,SwiftAndroid/swift,gregomni/swift,stephentyrone/swift,alblue/swift,atrick/swift,rudkx/swift,felix91gr/swift,nathawes/swift,calebd/swift,austinzheng/swift,arvedviehweger/swift,ben-ng/swift,kentya6/swift,slavapestov/swift,austinzheng/swift,nathawes/swift,apple/swift,jtbandes/swift,apple/swift,swiftix/swift,uasys/swift,johnno1962d/swift,xwu/swift,Jnosh/swift,deyton/swift,adrfer/swift,IngmarStein/swift,LeoShimonaka/swift,swiftix/swift.old,kstaring/swift,xwu/swift,ken0nek/swift,xedin/swift,harlanhaskins/swift,xedin/swift,khizkhiz/swift,slavapestov/swift,LeoShimonaka/swift,hooman/swift,jtbandes/swift,IngmarStein/swift,amraboelela/swift,shajrawi/swift,brentdax/swift,kstaring/swift,ben-ng/swift,modocache/swift,felix91gr/swift,LeoShimonaka/swift,cbrentharris/swift,CodaFi/swift,JGiola/swift,tardieu/swift,rudkx/swift,Jnosh/swift,tinysun212/swift-windows,sdulal/swift,KrishMunot/swift,mightydeveloper/swift,manavgabhawala/swift,mightydeveloper/swift,dduan/swift,shahmishal/swift,cbrentharris/swift,frootloops/swift,roambotics/swift,gmilos/swift,xwu/swift,arvedviehweger/swift,rudkx/swift,milseman/swift,kperryua/swift,glessard/swift,manavgabhawala/swift,return/swift,OscarSwanros/swift,LeoShimonaka/swift,huonw/swift,jopamer/swift,sdulal/swift,SwiftAndroid/swift,tjw/swift,jckarter/swift,jtbandes/swift,shahmishal/swift,lorentey/swift,milseman/swift,parkera/swift,tardieu/swift,huonw/swift,cbrentharris/swift,alblue/swift,hooman/swift,codestergit/swift,Ivacker/swift,tjw/swift,dduan/swift,slavapestov/swift,amraboelela/swift,atrick/swift,shajrawi/swift,lorentey/swift,amraboelela/swift,modocache/swift,natecook1000/swift,jmgc/swift,kusl/swift,SwiftAndroid/swift,benlangmuir/swift,lorentey/swift,khizkhiz/swift,parkera/swift,airspeedswift/swift,SwiftAndroid/swift,gribozavr/swift,Ivacker/swift,austinzheng/swift,arvedviehweger/swift,ahoppen/swift,uasys/swift,zisko/swift,deyton/swift,MukeshKumarS/Swift,gribozavr/swift,kusl/swift,cbrentharris/swift,natecook1000/swift,djwbrown/swift,karwa/swift,xedin/swift,amraboelela/swift,practicalswift/swift,swiftix/swift.old,gottesmm/swift,huonw/swift,bitjammer/swift,gottesmm/swift,johnno1962d/swift,practicalswift/swift,uasys/swift,sschiau/swift,allevato/swift,tinysun212/swift-windows,tinysun212/swift-windows,deyton/swift,swiftix/swift,felix91gr/swift,brentdax/swift,JaSpa/swift,LeoShimonaka/swift,zisko/swift,LeoShimonaka/swift,kusl/swift,gregomni/swift,Ivacker/swift,djwbrown/swift,tjw/swift,atrick/swift,kstaring/swift,milseman/swift,shahmishal/swift,apple/swift,benlangmuir/swift,parkera/swift,calebd/swift,gottesmm/swift,Jnosh/swift,practicalswift/swift,zisko/swift,glessard/swift,gmilos/swift,xwu/swift,JGiola/swift,ken0nek/swift,karwa/swift,uasys/swift,brentdax/swift,manavgabhawala/swift,tkremenek/swift,harlanhaskins/swift,natecook1000/swift,airspeedswift/swift,KrishMunot/swift,devincoughlin/swift,modocache/swift,emilstahl/swift,karwa/swift,danielmartin/swift,Jnosh/swift,airspeedswift/swift,felix91gr/swift,dreamsxin/swift,MukeshKumarS/Swift,khizkhiz/swift,emilstahl/swift,ken0nek/swift,ahoppen/swift,huonw/swift,brentdax/swift,uasys/swift,hughbe/swift,devincoughlin/swift,OscarSwanros/swift,OscarSwanros/swift,calebd/swift,nathawes/swift,alblue/swift,allevato/swift,adrfer/swift,jopamer/swift,parkera/swift,jopamer/swift,karwa/swift,tardieu/swift,practicalswift/swift,jtbandes/swift,glessard/swift,shahmishal/swift,gribozavr/swift,OscarSwanros/swift,LeoShimonaka/swift,amraboelela/swift,lorentey/swift,brentdax/swift,harlanhaskins/swift,lorentey/swift,tjw/swift,adrfer/swift,kperryua/swift,karwa/swift,gmilos/swift,codestergit/swift,sdulal/swift,OscarSwanros/swift,return/swift,JGiola/swift,jmgc/swift,russbishop/swift,kstaring/swift,mightydeveloper/swift,khizkhiz/swift,johnno1962d/swift,gmilos/swift,kusl/swift,danielmartin/swift,slavapestov/swift,gribozavr/swift,frootloops/swift,hughbe/swift,kusl/swift,jckarter/swift