From f4aa8389fc005240dcc2591fead706fd84ccaac8 Mon Sep 17 00:00:00 2001
From: Chris Feng <chris.w.feng@gmail.com>
Date: Fri, 23 Mar 2018 23:57:18 +0800
Subject: [PATCH] Fix a compatibility issue with Emacs 24

* exwm-core.el (exwm--defer): `time-add' in Emacs 24 only accept lists.
---
 exwm-core.el | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/exwm-core.el b/exwm-core.el
index 355b8b96c..ab5159c6a 100644
--- a/exwm-core.el
+++ b/exwm-core.el
@@ -126,7 +126,9 @@ Nil can be passed as placeholder."
 The action is to call FUNCTION with arguments ARGS.  If Emacs is not idle,
 defer the action until Emacs is idle.  Otherwise, defer the action until at
 least SECS seconds later."
-  `(run-with-idle-timer (time-add (or (current-idle-time) (- ,secs)) ,secs)
+  `(run-with-idle-timer (+ (float-time (or (current-idle-time)
+					   (seconds-to-time (- ,secs))))
+			   ,secs)
                         nil
                         ,function
                         ,@args))