From ac3310d23fa0367b6130a4b05fe41192410fadb3 Mon Sep 17 00:00:00 2001
From: mrmr1993
Date: Thu, 9 Nov 2017 14:06:50 +0000
Subject: Suppress propagation for keyup events when we have for keydown events

---
 lib/dom_utils.coffee     | 7 +++++--
 lib/handler_stack.coffee | 5 ++++-
 2 files changed, 9 insertions(+), 3 deletions(-)

(limited to 'lib')

diff --git a/lib/dom_utils.coffee b/lib/dom_utils.coffee
index d8a5d203..95b9f4b3 100644
--- a/lib/dom_utils.coffee
+++ b/lib/dom_utils.coffee
@@ -344,7 +344,7 @@ DomUtils =
   consumeKeyup: do ->
     handlerId = null
 
-    (event, callback = null) ->
+    (event, callback = null, suppressPropagation) ->
       unless event.repeat
         handlerStack.remove handlerId if handlerId?
         code = event.code
@@ -353,7 +353,10 @@ DomUtils =
           keyup: (event) ->
             return handlerStack.continueBubbling unless event.code == code
             @remove()
-            DomUtils.suppressEvent event
+            if suppressPropagation
+              DomUtils.suppressPropagation event
+            else
+              DomUtils.suppressEvent event
             handlerStack.continueBubbling
           # We cannot track keyup events if we lose the focus.
           blur: (event) ->
diff --git a/lib/handler_stack.coffee b/lib/handler_stack.coffee
index 646ddfbd..a43fc356 100644
--- a/lib/handler_stack.coffee
+++ b/lib/handler_stack.coffee
@@ -57,7 +57,10 @@ class HandlerStack
         if result == @passEventToPage
           return true
         else if result == @suppressPropagation
-          DomUtils.suppressPropagation event
+          if type == "keydown"
+            DomUtils.consumeKeyup event, null, true
+          else
+            DomUtils.suppressPropagation event
           return false
         else if result == @restartBubbling
           return @bubbleEvent type, event
-- 
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