don't warn in readLines for custom render function
don't warn in readLines for custom render function

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