Let trigger node also send last payload to arrive

and add test for it.

nodes/core/core/89-trigger.html

@@ -41,19 +41,20 @@
             </select>
        </span>
     </div>
+    <div class="form-row node-type-wait">
+        <input type="checkbox" id="node-input-extend" style="margin-left: 0px; vertical-align: top; width: auto !important;"> <label style="width:auto !important;" for="node-input-extend" data-i18n="trigger.extend"></label>
+    </div>
     <div class="form-row node-type-wait">
         <span data-i18n="trigger.then-send"></span>
         <select id="node-input-op2type" style="width:200px !important">
             <option value="val" data-i18n="trigger.output.string"></option>
             <option value="num" data-i18n="trigger.output.number"></option>
-            <option value="pay" data-i18n="trigger.output.existing"></option>
+            <option value="pay" data-i18n="trigger.output.original"></option>
+            <option value="payl" data-i18n="trigger.output.latest"></option>
             <option value="nul" data-i18n="trigger.output.nothing"></option>
         </select>
         <input style="width: 145px !important" type="text" id="node-input-op2">
     </div>
-    <div class="form-row node-type-wait">
-        <input type="checkbox" id="node-input-extend" style="margin-left: 0px; vertical-align: top; width: auto !important;"> <label style="width:auto !important;" for="node-input-extend" data-i18n="trigger.extend"></label>
-    </div>
     <div class="form-row">
         <span data-i18n="trigger.label.reset"></span><input type="text" id="node-input-reset" style="width:240px" data-i18n="[placeholder]trigger.label.resetprompt">
     </div>

nodes/core/core/89-trigger.js

@@ -60,6 +60,7 @@ module.exports = function(RED) {
             else {
                 if ((!tout) && (tout !== 0)) {
                     if (node.op2type === "pay") { m2 = msg.payload; }
+                    else if (node.op2type === "payl") { m2 = msg.payload; }
                     else if (node.op2Templated) { m2 = mustache.render(node.op2,msg); }
                     else { m2 = node.op2; }
                     if (node.op1type === "pay") { }
@@ -79,6 +80,7 @@ module.exports = function(RED) {
                 }
                 else if ((node.extend === "true" || node.extend === true) && (node.duration > 0)) {
                     clearTimeout(tout);
+                    if (node.op2type === "payl") { m2 = msg.payload; }
                     tout = setTimeout(function() {
                         msg.payload = m2;
                         if (node.op2type !== "nul") { node.send(msg); }

nodes/core/locales/en-US/messages.json

@@ -197,6 +197,8 @@
             "string": "the string",
             "number": "the number",
             "existing": "the existing msg.payload",
+            "original": "the original msg.payload",
+            "latest": "the latest msg.payload",
             "nothing": "nothing"
         },
         "wait-reset": "wait to be reset",

test/nodes/core/core/89-trigger_spec.js

@@ -235,6 +235,35 @@ describe('trigger Node', function() {
         });
     });
 
+    it('should be able to extend the delay and output the 2nd payload', function(done) {
+        var flow = [{"id":"n1", "type":"trigger", "name":"triggerNode", extend:"true", op1type:"nul", op2type:"payl", op1:"false", op2:"true", duration:200, wires:[["n2"]] },
+            {id:"n2", type:"helper"} ];
+        helper.load(triggerNode, flow, function() {
+            var n1 = helper.getNode("n1");
+            var n2 = helper.getNode("n2");
+            var c = 0;
+            n2.on("input", function(msg) {
+                if (c === 0) {
+                    msg.should.have.a.property("payload", "Goodbye");
+                    c += 1;
+                }
+                else {
+                    msg.should.have.a.property("payload", "World");
+                    (Date.now() - ss).should.be.greaterThan(380);
+                    done();
+                }
+            });
+            var ss = Date.now();
+            n1.emit("input", {payload:"Hello"});
+            setTimeout( function() {
+                n1.emit("input", {payload:"Goodbye"});
+            },100);
+            setTimeout( function() {
+                n1.emit("input", {payload:"World"});
+            },400);
+        });
+    });
+
     it('should be able to apply mustache templates to payloads', function(done) {
         var flow = [{"id":"n1", "type":"trigger", "name":"triggerNode", op1type:"val", op2type:"val", op1:"{{payload}}",  op2:"{{topic}}", duration:50, wires:[["n2"]] },
             {id:"n2", type:"helper"} ];
@@ -257,7 +286,7 @@ describe('trigger Node', function() {
     });
 
     it('should handle string null as null', function(done) {
-        var flow = [{"id":"n1", "type":"trigger", "name":"triggerNode", op2type:"pay", op1:"null",  op2:"null", duration:30, wires:[["n2"]] },
+        var flow = [{"id":"n1", "type":"trigger", "name":"triggerNode", op1type:"val", op2type:"pay", op1:"null", op2:"null", duration:40, wires:[["n2"]] },
             {id:"n2", type:"helper"} ];
         helper.load(triggerNode, flow, function() {
             var n1 = helper.getNode("n1");