Subject: (next|previous)-buffer silent about not switching

From: Juanma Barranquero <[email-masked]>
Date: Tue, 26 Nov 2019 13:08:12 +0100

Package: emacs
Severity: minor
Tags: patch
X-Debbugs-Cc: [email-masked]

In some circumstances, next-buffer and previous-buffer do not have any
buffer to switch to, and in that case they silently do nothing.  (Strictly
speaking, they call switch-to-(next|prev)-buffer, which do nothing and
return nil).

I think they should throw a user-error, to inform the user about the
situation.