Revert "invert shell quoting for R directory probing"
Revert "invert shell quoting for R directory probing"

This reverts commit a14764cd90768079f13c1b320df9eb63f4c2fac6.

Sage-Bionetworks/rstudio,thklaus/rstudio,githubfun/rstudio,brsimioni/rstudio,piersharding/rstudio,john-r-mcpherson/rstudio,jrnold/rstudio,suribes/rstudio,piersharding/rstudio,tbarrongh/rstudio,sfloresm/rstudio,pssguy/rstudio,maligulzar/Rstudio-instrumented,vbelakov/rstudio,sfloresm/rstudio,sfloresm/rstudio,brsimioni/rstudio,JanMarvin/rstudio,brsimioni/rstudio,jzhu8803/rstudio,jzhu8803/rstudio,Sage-Bionetworks/rstudio,Sage-Bionetworks/rstudio,maligulzar/Rstudio-instrumented,githubfun/rstudio,edrogers/rstudio,john-r-mcpherson/rstudio,githubfun/rstudio,githubfun/rstudio,tbarrongh/rstudio,suribes/rstudio,john-r-mcpherson/rstudio,edrogers/rstudio,more1/rstudio,pssguy/rstudio,githubfun/rstudio,edrogers/rstudio,maligulzar/Rstudio-instrumented,pssguy/rstudio,pssguy/rstudio,maligulzar/Rstudio-instrumented,john-r-mcpherson/rstudio,JanMarvin/rstudio,jar1karp/rstudio,piersharding/rstudio,Sage-Bionetworks/rstudio,jar1karp/rstudio,jzhu8803/rstudio,vbelakov/rstudio,brsimioni/rstudio,brsimioni/rstudio,suribes/rstudio,jrnold/rstudio,jar1karp/rstudio,edrogers/rstudio,tbarrongh/rstudio,thklaus/rstudio,nvoron23/rstudio,sfloresm/rstudio,JanMarvin/rstudio,jzhu8803/rstudio,tbarrongh/rstudio,JanMarvin/rstudio,edrogers/rstudio,Sage-Bionetworks/rstudio,suribes/rstudio,john-r-mcpherson/rstudio,brsimioni/rstudio,jrnold/rstudio,suribes/rstudio,edrogers/rstudio,vbelakov/rstudio,edrogers/rstudio,nvoron23/rstudio,sfloresm/rstudio,tbarrongh/rstudio,Sage-Bionetworks/rstudio,jrnold/rstudio,maligulzar/Rstudio-instrumented,brsimioni/rstudio,pssguy/rstudio,sfloresm/rstudio,brsimioni/rstudio,sfloresm/rstudio,more1/rstudio,pssguy/rstudio,nvoron23/rstudio,tbarrongh/rstudio,JanMarvin/rstudio,more1/rstudio,maligulzar/Rstudio-instrumented,tbarrongh/rstudio,JanMarvin/rstudio,githubfun/rstudio,jzhu8803/rstudio,thklaus/rstudio,jar1karp/rstudio,jrnold/rstudio,piersharding/rstudio,jar1karp/rstudio,jrnold/rstudio,thklaus/rstudio,john-r-mcpherson/rstudio,JanMarvin/rstudio,more1/rstudio,john-r-mcpherson/rstudio,nvoron23/rstudio,john-r-mcpherson/rstudio,piersharding/rstudio,jar1karp/rstudio,nvoron23/rstudio,vbelakov/rstudio,jar1karp/rstudio,suribes/rstudio,thklaus/rstudio,thklaus/rstudio,more1/rstudio,vbelakov/rstudio,thklaus/rstudio,vbelakov/rstudio,piersharding/rstudio,piersharding/rstudio,thklaus/rstudio,more1/rstudio,pssguy/rstudio,JanMarvin/rstudio,nvoron23/rstudio,more1/rstudio,maligulzar/Rstudio-instrumented,piersharding/rstudio,sfloresm/rstudio,jzhu8803/rstudio,jrnold/rstudio,githubfun/rstudio,jar1karp/rstudio,Sage-Bionetworks/rstudio,suribes/rstudio,nvoron23/rstudio,more1/rstudio,jrnold/rstudio,jzhu8803/rstudio,jrnold/rstudio,maligulzar/Rstudio-instrumented,vbelakov/rstudio,maligulzar/Rstudio-instrumented,suribes/rstudio,pssguy/rstudio,jzhu8803/rstudio,githubfun/rstudio,tbarrongh/rstudio,vbelakov/rstudio,JanMarvin/rstudio,edrogers/rstudio,jar1karp/rstudio,piersharding/rstudio