check whether rnw weave method is installed before attempting to return chunk options
check whether rnw weave method is installed before attempting to return chunk options

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