Handle $EDITOR with spaces
Handle $EDITOR with spaces

Fixes Homebrew/homebrew#40

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