Subject: bug#19547: Patch for this bug

From: Thierry Volpiatto <[email-masked]>
Date: Sun, 27 Nov 2016 08:16:39 +0100

I have installed Parcellite (a clipboard manager).
When it is running I can reproduce the bug at every time when running
helm-find-files on a very large directory, but with the patch applied
and 
(setq while-no-input-ignore-events '(focus-in focus-out help iconify
deiconify selection-request))

it is now working as expected, the listing of directory popup
immediately.

-- 
Thierry