Fix bug where inverse section was being passed to subsequent helpers

lib/handlebars/compiler/compiler.js

@@ -181,6 +181,7 @@ Handlebars.JavaScriptCompiler = function() {};
       this.declare('inverse', programGuid);
 
       this.opcode('invokeProgram', null, params.length, !!block.mustache.hash);
+      this.declare('inverse', null);
       this.opcode('append');
     },
 

spec/qunit_spec.js

@@ -983,4 +983,13 @@ test("GH-94: Cannot read property of undefined", function() {
 	var string = "{{#books}}{{title}}{{author.name}}{{/books}}";
 	shouldCompileTo(string, data, "The origin of speciesCharles DarwinLazarillo de Tormes",
                   "Renders without an undefined property error");
-});
+});
+
+test("GH-150: Inverted sections print when they shouldn't", function() {
+  var string = "{{^set}}not set{{/set}} :: {{#set}}set{{/set}}";
+
+  shouldCompileTo(string, {}, "not set :: ", "inverted sections run when property isn't present in context");
+  shouldCompileTo(string, {set: undefined}, "not set :: ", "inverted sections run when property is undefined");
+  shouldCompileTo(string, {set: false}, "not set :: ", "inverted sections run when property is false");
+  shouldCompileTo(string, {set: true}, " :: set", "inverted sections don't run when property is true");
+});