Re: master abe5eb9: Explain what ( . c) means to the Emacs Lisp reader

[Stefan Kangas]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> diff --git a/doc/lispref/objects.texi b/doc/lispref/objects.texi
> index d8091f1..365d5ac 100644
> --- a/doc/lispref/objects.texi
> +++ b/doc/lispref/objects.texi
> @@ -1001,6 +1001,13 @@ It looks like this:
>  @end example
>  @end ifnottex
>
> +  As a somewhat peculiar side effect of @code{(a b . c)} and
> +@code{(a . (b . c))} being equivalent, for consistency this means
> +that if you replace @code{b} here with the empty sequence, then it
> +follows that @code{(a . c)} and @code{(a . ( . c))} are equivalent,
> +too.  This also means that @code{( .  c)} is equivalent to @code{c},
> +but this is seldom used.

This really is nitpicking but... should we perhaps say something even
stronger here, for example "almost never used"?