Subject: bug#17453: Isearch doesn't work properly with Follow Mode.

From: Eli Zaretskii <[email-masked]>
Date: Mon, 02 Nov 2015 19:45:41 +0200

> Date: Mon, 2 Nov 2015 15:44:45 +0000
> From: Alan Mackenzie <[email-masked]>
> Cc: Juri Linkov <[email-masked]>, [email-masked],
> 	emacs-devel <[email-masked]>
> 
> A related point in one of your patches below.  It explicitly selects one
> of the Follow Mode windows.  This is bad.  Follow Mode itself choses the
> right window in its post-command-hook.  Second-guessing it within the
> command processing is liable to lead to confusion, maintenance
> difficulties, and general pain.

You could call the same code that post-command-hook calls, then it
wouldn't be second-guessing.