From efd55e5d4fee5c1089aba52fe6b45bbc70dce526 Mon Sep 17 00:00:00 2001
From: Rachel Fenichel <fenichel@google.com>
Date: Mon, 21 May 2018 15:12:09 -0700
Subject: [PATCH] Disable ws comments in IE

---
 core/contextmenu.js | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/core/contextmenu.js b/core/contextmenu.js
index 75a0afa3c..657556645 100644
--- a/core/contextmenu.js
+++ b/core/contextmenu.js
@@ -388,7 +388,11 @@ Blockly.ContextMenu.workspaceCommentOption = function(ws, e) {
     }
   };
 
-  var wsCommentOption = {enabled: true};
+  var wsCommentOption = {
+    // Foreign objects don't work in IE.  Don't let the user create comments
+    // that they won't be able to edit.
+    enabled: !goog.userAgent.IE
+  };
   wsCommentOption.text = Blockly.Msg.ADD_COMMENT;
   wsCommentOption.callback = function() {
     addWsComment();