From 38007b19ad8812c5bfdb80f775e1da6e35a82c17 Mon Sep 17 00:00:00 2001
From: Andy Dayton <amdayton@gmail.com>
Date: Sat, 24 Jan 2015 21:43:26 -0500
Subject: [PATCH 1/2] Try adding grunt async and creating a simple index check

---
 tasks/wkhtmltopdf.js | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/tasks/wkhtmltopdf.js b/tasks/wkhtmltopdf.js
index 6f6dc05..9b37a80 100644
--- a/tasks/wkhtmltopdf.js
+++ b/tasks/wkhtmltopdf.js
@@ -18,7 +18,9 @@ module.exports = function(grunt) {
 
   grunt.registerMultiTask('wkhtmltopdf', 'Your task description goes here.', function() {
 
-    this.files.forEach(function(file) {
+    var done = this.async();
+
+    this.files.forEach(function(file, filesIndex) {
 
       var pathlib = require('path');
       // calculate the destination directory and ensure it exists, since
@@ -30,7 +32,7 @@ module.exports = function(grunt) {
       }
       grunt.file.mkdir(destPath);
 
-      file.src.forEach(function(src) {
+      file.src.forEach(function(src, srcIndex) {
 
         var dest = file.dest;
         // wkhtmltopdf seems to require that the destination be a file
@@ -64,6 +66,10 @@ module.exports = function(grunt) {
             if (err) {
               grunt.log('>>>', err);
             }
+            // if this is the last src of the last file, we are done.
+            if((filesIndex+1 >= files.length) && (srcIndex+1 >= src.length)) {
+              done();
+            }
           }
         });
       });

From 696955b345693879fa0b3baa6c8f144586cbc3d6 Mon Sep 17 00:00:00 2001
From: Andy Dayton <amdayton@gmail.com>
Date: Sat, 24 Jan 2015 21:57:51 -0500
Subject: [PATCH 2/2] Added some comments

---
 tasks/wkhtmltopdf.js | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/tasks/wkhtmltopdf.js b/tasks/wkhtmltopdf.js
index 9b37a80..5000ec3 100644
--- a/tasks/wkhtmltopdf.js
+++ b/tasks/wkhtmltopdf.js
@@ -18,9 +18,13 @@ module.exports = function(grunt) {
 
   grunt.registerMultiTask('wkhtmltopdf', 'Your task description goes here.', function() {
 
-    var done = this.async();
+    // using grunt async support so we can be sure task doesn't
+    // end before PDF processing does: http://gruntjs.com/api/inside-tasks
+    var done = this.async(),
+        files = this.files;
 
-    this.files.forEach(function(file, filesIndex) {
+    // iterate through each file grouping
+    files.forEach(function(file, filesIndex) {
 
       var pathlib = require('path');
       // calculate the destination directory and ensure it exists, since
@@ -67,7 +71,7 @@ module.exports = function(grunt) {
               grunt.log('>>>', err);
             }
             // if this is the last src of the last file, we are done.
-            if((filesIndex+1 >= files.length) && (srcIndex+1 >= src.length)) {
+            if((filesIndex+1 >= files.length) && (srcIndex+1 >= file.src.length)) {
               done();
             }
           }