Subject: bug#36989: 26.2; Doc string of `y-or-n-p': say it returns nil if answer is not `y' or `DEL'

From: Drew Adams <[email-masked]>
Date: Fri, 9 Aug 2019 09:44:48 -0700 (PDT)

Subject line says it all.  The doc says only that it returns `t' if the
answer is `y'.  It should also say what it returns if the answer is no
(not `y' or `DEL').

(The Elisp manual is OK for this.)

In GNU Emacs 26.2 (build 1, x86_64-w64-mingw32)
 of 2019-04-13
Repository revision: fd1b34bfba8f3f6298df47c8e10b61530426f749
Windowing system distributor `Microsoft Corp.', version 10.0.17763
Configured using:
 `configure --without-dbus --host=x86_64-w64-mingw32
 --without-compress-install 'CFLAGS=-O2 -static -g3''