[NTG-context] --purgebufffers option?

Dear Hans, I compile ConTeXt documents with --purgeall, but if I save buffers into files and typeset those files or I typeset buffers directly, these files aren’t purged after successful compilation. Would it be possible to enable an option (such as --purgebuffers) that removes all buffer files generated by that compilation? Many thanks for your help, Pablo -- http://www.ousia.tk