bug#29478: [Patch] bug#29478: 26.0.90; `C-h k' followed by mouse clicks no longer shows down event

[Eli Zaretskii]

> Date: Sat, 23 Dec 2017 11:17:26 +0000
> Cc: Stefan Monnier <monnier@iro.umontreal.ca>, 29478@debbugs.gnu.org,
>   npostavs@users.sourceforge.net
> From: Alan Mackenzie <acm@muc.de>
> 
> Of course!  read-key-sequence consumes all the events up to the
> S-down-mouse-1, leaving the following S-mouse-1 in the event buffer.
> This is read at the next iteration of the command loop.
> 
> > CC'ing Stefan in the hope that he could have some insights.
> 
> OK, I have a provisional fix.  The problem was that the double-click-time
> loop in help-read-key-sequence was discarding all events but the last
> one.  I have amended the loop so that _all_ these events are stored in a
> list, and we then discard the most recent events till we find one with a
> binding.
> 
> This patch seems to work with GPM in a Linux tty, and also in X-Windows
> (I think).  (It is based on the emacs-26 branch, of course.)

LGTM, thanks.  The problem I reported is gone with this patch.