Subject: 25.1.1: looking-back wrong info

From: Andreas Röhler <[email-masked]>
Date: Fri, 2 Sep 2016 10:48:39 +0200

Wrong advertised-calling-convention

 From subr.el: looking-back declares optional argument LIMIT mandatory.

Such calling-convention deserves a place in doku, but should not send 
wrong info out of didactics

GNU Emacs 25.1.1 (i686-pc-linux-gnu, GTK+ Version 3.14.5) of 2016-08-22