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bug#19547: Patch for this bug

From: Eli Zaretskii
Subject: bug#19547: Patch for this bug
Date: Tue, 08 Nov 2016 22:40:07 +0200

> From: Reuben Thomas <address@hidden>
> Date: Tue, 8 Nov 2016 18:28:28 +0000
> Further, at present it would not help helm to implement Eli's suggestion of a 
> list of events for input-pending-p
> to ignore, as Helm currently does not use that (it has a custom version of 
> while-no-input that does not call
> input-pending-p).

The suggestion was not that specific.  The idea was to let Lisp
programs specify which special events they would like to consider as
input.  E.g., define a variable that holds a list of such events, and
test the value of that variable in the same place where you propose to
add yet another event to those ignored for the purposes of
throw-on-input (IMO, the same list should be looked at in
readable_events, which will then make input-pending-p consistent with
while-no-input and any other similar functionality).  It shouldn't be
too hard to implement that, and we gain a certain peace of mind in
that we don't have to worry about some hypothetical application that
would like to do stuff differently from Helm.

IOW, since this is going to go on master, I see no reason to hurry
with a simple solution, and would prefer a slightly more complex one,
but one that is more future-proof.  Can you do that?


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