From 8cc4a862fe615fa100a932e1d3060e48ba39650a Mon Sep 17 00:00:00 2001
From: Leo Horie <leohorie@hotmail.com>
Date: Fri, 13 Mar 2015 22:54:46 -0400
Subject: [PATCH] #413 fix ctx.retain bug

---
 mithril.js             |  2 +-
 tests/mithril-tests.js | 25 +++++++++++++++++++++++--
 2 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/mithril.js b/mithril.js
index 3458fef5..d0633555 100644
--- a/mithril.js
+++ b/mithril.js
@@ -274,7 +274,7 @@ var m = (function app(window, undefined) {
 			}
 			//schedule configs to be called. They are called after `build` finishes running
 			if (typeof data.attrs["config"] === FUNCTION) {
-				var context = cached.configContext = cached.configContext || {retain: m.redraw.strategy() == "diff"};
+				var context = cached.configContext = cached.configContext || {retain: (m.redraw.strategy() == "diff") || undefined};
 
 				// bind
 				var callback = function(data, args) {
diff --git a/tests/mithril-tests.js b/tests/mithril-tests.js
index a0f9d307..911bb3e9 100644
--- a/tests/mithril-tests.js
+++ b/tests/mithril-tests.js
@@ -98,6 +98,27 @@ function testMithril(mock) {
 		
 		return unloaded === true
 	})
+	test(function() {
+		mock.requestAnimationFrame.$resolve()
+		
+		var root = mock.document.createElement("div")
+		var initCount = 0
+		var module = {}
+		module.view = function() {
+			return m("div", {config: function(el, init) {
+				if (!init) initCount++
+			}})
+		}
+		m.module(root, module)
+		
+		mock.requestAnimationFrame.$resolve()
+		
+		m.redraw()
+		
+		mock.requestAnimationFrame.$resolve()
+		
+		return initCount == 1
+	})
 	m.redraw.strategy(undefined) //teardown for m.module tests
 
 	//m.withAttr
@@ -1803,7 +1824,7 @@ function testMithril(mock) {
 			"/a": a
 		})
 		
-		return value === false
+		return !value
 	})
 	test(function() {
 		mock.requestAnimationFrame.$resolve()
@@ -1824,7 +1845,7 @@ function testMithril(mock) {
 			"/a": a
 		})
 		
-		return value === true
+		return value
 	})
 	test(function() {
 		mock.requestAnimationFrame.$resolve()