From daba67692eb85985c4d86900ed7c56e18caa3db7 Mon Sep 17 00:00:00 2001
From: Garth Williams <garth@wi.llia.ms>
Date: Mon, 15 Feb 2016 16:32:17 +0100
Subject: [PATCH] Fix cursor jumping to the end of "controlled" inputs

DOM `INPUT.value` should never be updated when it matches the new vnode.

This fixes issues where typing into an INPUT with a sync event handler
cause a render (such as for validation feedback) where setting
`INPUT.value` also pushes the cursor to the end of the input.
---
 modules/props.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/props.js b/modules/props.js
index 70795ab..84ed631 100644
--- a/modules/props.js
+++ b/modules/props.js
@@ -9,7 +9,7 @@ function updateProps(oldVnode, vnode) {
   for (key in props) {
     cur = props[key];
     old = oldProps[key];
-    if (old !== cur) {
+    if (old !== cur && (key !== 'value' || elm[key] !== cur)) {
       elm[key] = cur;
     }
   }