Subject: bug#24812: 25.1; Missing (binary) radix format directive

From: Alex <[email-masked]>
Date: Thu, 27 Oct 2016 22:24:04 -0600

Emacs' `format' has %o, %x, and %d, but it's missing both the ~r and ~b
radix directives from Common Lisp's `format'.

I can understand leaving out ~r, but I think ~b is worth adding to
Emacs' `format'.

CL example:
(format nil "~b" 5) => "101"

Requested:
(format "%b" 5) => "101"