Subject: bug#14356: 24.3; Symbol's value as variable is void: help-xref-following

From: Glenn Morris <[email-masked]>
Date: Tue, 07 May 2013 02:41:05 -0400

Leo Liu wrote:

> Would be nice to know where it is let-bound.

Use grep. AFAICS, nothing distributed with Emacs can cause this.
The only possible candidate in 24.3 is gnus-art, and I think that usage
is fine (see my other message).

> For example, octave.el (in emacs trunk) does this but I cannot
> reproduce this bug with it.

I think you are saved by with-help-window using
with-output-to-temp-buffer, which runs help-mode-setup via
temp-buffer-setup-hook.