ruby_requirement: add/fix default_formula.
ruby_requirement: add/fix default_formula.

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