From 095a27be06c1f6d24729264bd78f9999f87fe62f Mon Sep 17 00:00:00 2001
From: David Flanagan <dflanagan@mozilla.com>
Date: Thu, 5 Mar 2015 12:34:54 -0800
Subject: [PATCH] partial workaround for bug 1139575

---
 gesture.js | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/gesture.js b/gesture.js
index 54ed978..a514580 100644
--- a/gesture.js
+++ b/gesture.js
@@ -256,7 +256,12 @@
           throw new Error('touchend');
         }
         if (endTouches.length !== startTouches.length) {
-          throw new Error('wrong number of touches');
+          // This should not happen, but it does happen for unknown reasons
+          // See bug 1139575. If we throw an error here it aborts the gesture
+          // and makes it hard for the user to swipe on some devices.
+          // So instead we just return false and act like it never happened
+          // throw new Error('wrong number of touches');
+          return false;
         }
 
         var data = {