also checks prefix.string for better compatibility with Sweave
also checks prefix.string for better compatibility with Sweave

antass/labnotebook3,fboehm/cboettig_site,antass/labnotebook3,antass/labnotebook3,fboehm/labnotebook,fboehm/cboettig_site,fboehm/labnotebook,fboehm/labnotebook,fboehm/cboettig_site,fboehm/cboettig_site,fboehm/labnotebook,fboehm/labnotebook,fboehm/cboettig_site,fboehm/labnotebook