#'union doesn't preserve relative order; use #'delete-duplicates instead. 2010-02-07 Aidan Kehoe <kehoea@parhasard.net> * setup-paths.el (paths-find-emacs-roots) (paths-construct-info-path): * packages.el (packages-find-installation-package-directories): #'union doesn't guarantee that it will preserve the relative order of elements in its arguments; use #'delete-duplicates instead. Thank you for the bug reports, Robert Pluim, Stephen Turnbull.