When attempting to install w3-el-e19 or w3-el-e20, which put files in subdirectories of /usr/share/emacs{19,20}/site-lisp, dpkg complains that those packages overwrite those directories that are owned by emacs{19,20} and refuses to install them without --force-overwrite. Why does dpkg do this? Surely it is okay for one package to populate directories created by another? This is getting really irritating. How can I fix it? Thanks, Ben.