From 38d08873bc920f89f2fcdc062c39f63ef0669411 Mon Sep 17 00:00:00 2001
From: Daniel Imms <daimms@microsoft.com>
Date: Wed, 13 Jul 2016 20:34:43 -0700
Subject: [PATCH] Don't finalize composition on modifier key presses

---
 src/xterm.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/xterm.js b/src/xterm.js
index 8166c545..30bf987f 100644
--- a/src/xterm.js
+++ b/src/xterm.js
@@ -2627,7 +2627,10 @@
     Terminal.prototype.keyDown = function(ev) {
       if (this.compositionHelper.isComposing || this.compositionHelper.isSendingComposition) {
         if (ev.keyCode === 229) {
-          // Continue composing
+          // Continue composing if the keyCode is the "composition character"
+          return;
+        } else if (ev.keyCode === 16 || ev.keyCode === 17 || ev.keyCode === 18) {
+          // Continue composing if the keyCode is a modifier key
           return;
         } else {
           // Finish composition immediately