FIX installed but not installed state.
FIX installed but not installed state.

Pressing CTRL-C during installs would remove the prefix but not the keg directory. brew list would then report this keg as installed, even though it was empty.
palxex/brew,konqui/brew,palxex/brew,pseudocody/brew,toonetown/homebrew,toonetown/homebrew,pseudocody/brew,EricFromCanada/brew,ilovezfs/brew,palxex/brew,konqui/brew,DomT4/brew,mahori/brew,MikeMcQuaid/brew,mahori/brew,reelsense/brew,mgrimes/brew,jmsundar/brew,EricFromCanada/brew,mgrimes/brew,sjackman/homebrew,amar-laksh/brew_sudo,Linuxbrew/brew,JCount/brew,amar-laksh/brew_sudo,nandub/brew,alyssais/brew,gregory-nisbet/brew,pseudocody/brew,ilovezfs/brew,muellermartin/dist,hanxue/linuxbrew,maxim-belkin/brew,rwhogg/brew,claui/brew,nandub/brew,konqui/brew,aw1621107/brew,alyssais/brew,AnastasiaSulyagina/brew,AnastasiaSulyagina/brew,reitermarkus/brew,rwhogg/brew,sjackman/homebrew,Linuxbrew/brew,reelsense/brew,jmsundar/brew,MikeMcQuaid/brew,muellermartin/dist,EricFromCanada/brew,tonyg/homebrew,claui/brew,jmsundar/brew,JCount/brew,reelsense/brew,staticfloat/brew,reitermarkus/brew,nandub/brew,MikeMcQuaid/brew,tonyg/homebrew,bfontaine/brew,Homebrew/brew,staticfloat/brew,gregory-nisbet/brew,mistydemeo/homebrew,Homebrew/brew,zmwangx/brew,mahori/brew,ilovezfs/brew,Homebrew/brew,tonyg/homebrew,gordonmcshane/homebrew,JCount/brew,rwhogg/brew,DomT4/brew,reitermarkus/brew,mgrimes/brew,MikeMcQuaid/brew,sjackman/homebrew,AnastasiaSulyagina/brew,JCount/brew,Linuxbrew/brew,hanxue/linuxbrew,vitorgalvao/brew,zmwangx/brew,claui/brew,DomT4/brew,claui/brew,gregory-nisbet/brew,mahori/brew,amar-laksh/brew_sudo,konqui/brew,muellermartin/dist,nandub/brew,hanxue/linuxbrew,DomT4/brew,maxim-belkin/brew,sjackman/homebrew,staticfloat/brew,vitorgalvao/brew,reitermarkus/brew,EricFromCanada/brew,zmwangx/brew,alyssais/brew,Linuxbrew/brew,toonetown/homebrew,bfontaine/brew,mistydemeo/homebrew,aw1621107/brew,vitorgalvao/brew,maxim-belkin/brew,gordonmcshane/homebrew,vitorgalvao/brew,gordonmcshane/homebrew,mistydemeo/homebrew,Homebrew/brew,aw1621107/brew,bfontaine/brew