From 370330a323a76af6e3b5b7b21e8c104963d04390 Mon Sep 17 00:00:00 2001
From: Yuan Xulei <xyuan@mozilla.com>
Date: Tue, 17 Jun 2014 12:05:49 +0800
Subject: [PATCH] Bug 975276 - Fix cursor parameter mistake of setComposition.
 r=masayuki

---
 dom/inputmethod/MozKeyboard.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dom/inputmethod/MozKeyboard.js b/dom/inputmethod/MozKeyboard.js
index ed1d348dc8f..6b584279b76 100644
--- a/dom/inputmethod/MozKeyboard.js
+++ b/dom/inputmethod/MozKeyboard.js
@@ -574,7 +574,7 @@ MozInputContext.prototype = {
         contextId: self._contextId,
         requestId: resolverId,
         text: text,
-        cursor: cursor || text.length,
+        cursor: (typeof cursor !== 'undefined') ? cursor : text.length,
         clauses: clauses || null
       });
     });