In a buffer containing (encode-time 0 0 0 1 1 2009) the commands M-x elint-initialize M-x elint-current-buffer leave in the *Elint* buffer an error Wrong number of args: (encode-time 0 0 0 1 1 2009), (second minute hour day month year zone &rest args) where I believe 6 args to encode-time is right, and should pass the checks. I suspect it's elint-unknown-builtin-args making the "zone" arg mandatory, per below. Incidentally, can some of the overrides in that list be handled in the code nowadays? Running (elint-find-builtin-args '(encode-time)) gives back `fn' instead of the function name, matched out of the docstring (documentation 'encode-time). Maybe that could be transformed, or maybe some of the help funcs can do that already. In GNU Emacs 22.2.1 (i486-pc-linux-gnu, GTK+ Version 2.12.11) of 2008-11-10 on raven, modified by Debian configured using `configure '--build=i486-linux-gnu' '--host=i486-linux-gnu' '--prefix=/usr' '--sharedstatedir=/var/lib' '--libexecdir=/usr/lib' '--localstatedir=/var/lib' '--infodir=/usr/share/info' '--mandir=/usr/share/man' '--with-pop=yes' '--enable-locallisppath=/etc/emacs22:/etc/emacs:/usr/local/share/emacs/22.2/site-lisp:/usr/local/share/emacs/site-lisp:/usr/share/emacs/22.2/site-lisp:/usr/share/emacs/site-lisp:/usr/share/emacs/22.2/leim' '--with-x=yes' '--with-x-toolkit=gtk' '--with-toolkit-scroll-bars' 'build_alias=i486-linux-gnu' 'host_alias=i486-linux-gnu' 'CFLAGS=-DDEBIAN -g -O2' 'LDFLAGS=-g' 'CPPFLAGS='' Important settings: value of $LC_ALL: nil value of $LC_COLLATE: nil value of $LC_CTYPE: nil value of $LC_MESSAGES: nil value of $LC_MONETARY: nil value of $LC_NUMERIC: nil value of $LC_TIME: nil value of $LANG: en_AU locale-coding-system: iso-8859-1 default-enable-multibyte-characters: t Major mode: Group Minor modes in effect: gnus-topic-mode: t gnus-undo-mode: t iswitchb-mode: t show-paren-mode: t encoded-kbd-mode: t file-name-shadow-mode: t unify-8859-on-encoding-mode: t utf-translate-cjk-mode: t auto-compression-mode: t line-number-mode: t 2009-02-24 Kevin Ryde * emacs-lisp/elint.el (elint-unknown-builtin-args): Correction to args for encode-time.