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

[Juri Linkov]

>> > I believe this was already taken care of by work that Juri did recently.
>> > I don't have time to look this up now, but see recent bug reports.
>>
>> I ran a git log on isearch.el and I think you're referring to this change:
>>
>> 10ec0468dfbc0815a772cc46a031aca298af0985 Lazy-highlight the whole
>> string at point (debbugs:19353)
>>
>> If so, that's just about extending the bound a little bit to ensure it
>> holds a whole symbol. follow-mode actually needs to extend the bound a
>> lot more (up 'till the `window-end' of the last window in the group).
>
> Please check with Juri.  I'm pretty sure the discussion included
> the possibility of having lazy highlighting throughout a buffer.

Yes, what I meant is:

diff --git a/lisp/follow.el b/lisp/follow.el
index 938c59e..fc970bb 100644
--- a/lisp/follow.el
+++ b/lisp/follow.el
@@ -419,6 +419,7 @@ (define-minor-mode follow-mode
   :keymap follow-mode-map
   (if follow-mode
       (progn
+       (setq-local lazy-highlight-buffer t)
        (add-hook 'compilation-filter-hook 'follow-align-compilation-windows t 
t)
        (add-hook 'post-command-hook 'follow-post-command-hook t)
        (add-hook 'window-size-change-functions 'follow-window-size-change t))