Allow brew abv without arguments
Allow brew abv without arguments

mistydemeo/homebrew,Linuxbrew/brew,amar-laksh/brew_sudo,toonetown/homebrew,AnastasiaSulyagina/brew,claui/brew,ilovezfs/brew,Homebrew/brew,vitorgalvao/brew,AnastasiaSulyagina/brew,jmsundar/brew,mistydemeo/homebrew,muellermartin/dist,Homebrew/brew,aw1621107/brew,alyssais/brew,MikeMcQuaid/brew,bfontaine/brew,nandub/brew,DomT4/brew,rwhogg/brew,sjackman/homebrew,sjackman/homebrew,reitermarkus/brew,MikeMcQuaid/brew,Linuxbrew/brew,konqui/brew,palxex/brew,reelsense/brew,reitermarkus/brew,mistydemeo/homebrew,mahori/brew,maxim-belkin/brew,staticfloat/brew,konqui/brew,mgrimes/brew,hanxue/linuxbrew,sjackman/homebrew,Homebrew/brew,toonetown/homebrew,JCount/brew,reitermarkus/brew,claui/brew,ilovezfs/brew,staticfloat/brew,mgrimes/brew,gordonmcshane/homebrew,reelsense/brew,JCount/brew,vitorgalvao/brew,vitorgalvao/brew,tonyg/homebrew,staticfloat/brew,maxim-belkin/brew,jmsundar/brew,bfontaine/brew,amar-laksh/brew_sudo,mahori/brew,vitorgalvao/brew,DomT4/brew,sjackman/homebrew,MikeMcQuaid/brew,maxim-belkin/brew,EricFromCanada/brew,tonyg/homebrew,mahori/brew,nandub/brew,zmwangx/brew,palxex/brew,konqui/brew,gordonmcshane/homebrew,pseudocody/brew,gregory-nisbet/brew,konqui/brew,nandub/brew,muellermartin/dist,MikeMcQuaid/brew,alyssais/brew,muellermartin/dist,pseudocody/brew,zmwangx/brew,alyssais/brew,EricFromCanada/brew,hanxue/linuxbrew,DomT4/brew,rwhogg/brew,reelsense/brew,tonyg/homebrew,mahori/brew,aw1621107/brew,Linuxbrew/brew,nandub/brew,gordonmcshane/homebrew,Homebrew/brew,amar-laksh/brew_sudo,rwhogg/brew,gregory-nisbet/brew,gregory-nisbet/brew,claui/brew,ilovezfs/brew,EricFromCanada/brew,EricFromCanada/brew,zmwangx/brew,mgrimes/brew,bfontaine/brew,DomT4/brew,AnastasiaSulyagina/brew,palxex/brew,toonetown/homebrew,hanxue/linuxbrew,JCount/brew,claui/brew,pseudocody/brew,Linuxbrew/brew,reitermarkus/brew,jmsundar/brew,JCount/brew,aw1621107/brew