FYI, I found this today:

(To silence byte-compiler warnings about unused variables, just use a
variable name that start with an underscore. The byte-compiler interprets
this as an indication that this is a variable known not to be used.)

https://www.gnu.org/software/emacs/manual/html_node/elisp/Using-Lexical-Binding.html

John

-----------------------------------
Professor John Kitchin
Doherty Hall A207F
Department of Chemical Engineering
Carnegie Mellon University
Pittsburgh, PA 15213
412-268-7803
@johnkitchin
http://kitchingroup.cheme.cmu.edu


On Thu, Feb 11, 2016 at 12:33 PM, Nick Dokos <ndokos@gmail.com> wrote:

> Thorsten Jolitz <tjolitz@gmail.com> writes:
>
> > John Kitchin <jkitchin@andrew.cmu.edu> writes:
> >
> >> On Wed, Feb 10, 2016 at 3:13 PM, Thorsten Jolitz <tjolitz@gmail.com>
> >> wrote:
> >>
> >>     #+BEGIN_SRC emacs-lisp
> >>     (defun my-foo (_)
> >>     "Hello World.
> >>     Argument _ unknown argument."
> >>     (+ 1 1))
> >>     #+END_SRC
> >>
> >> strange. in Emacs 25.1, I am pretty sure I get no errors from
> >> checkdoc.
> >
> > Maybe not so strange, since I'm on:
> >
> > ,----
> > | GNU Emacs 24.5.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.16.6)
> > |  of 2015-09-10 on foutrelis
> > `----
> >
> > And I thought with Archlinux I'm always up-to-date ...
>
> Unless you build your own from the upstream git repo, you can never be
> up to date; even so, it depends on how often you build - I build from
> upstream every six months or so and my current version is
>
> GNU Emacs 25.0.50.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.14.15) of
> 2015-08-16
>
> It's probably time to rebuild...
>
> --
> Nick
>
>
>