From 9489aa34a7368372e046dc96101b5f2b9b1bec66 Mon Sep 17 00:00:00 2001
From: Steve Lacy <stevelacy@users.noreply.github.com>
Date: Sat, 19 Jul 2014 08:32:15 -0700
Subject: [PATCH 1/2] through2 0.5.1 file callback

---
 docs/writing-a-plugin/guidelines.md | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/docs/writing-a-plugin/guidelines.md b/docs/writing-a-plugin/guidelines.md
index 2cc7b8a5f..b7e03500d 100644
--- a/docs/writing-a-plugin/guidelines.md
+++ b/docs/writing-a-plugin/guidelines.md
@@ -74,7 +74,7 @@ function gulpPrefixer(prefixText) {
   prefixText = new Buffer(prefixText); // allocate ahead of time
 
   // Creating a stream through which each file will pass
-  var stream = through.obj(function(file, enc, callback) {
+  return through.obj(function(file, enc, callback) {
     if (file.isNull()) {
        // Do nothing if no contents
     }
@@ -86,13 +86,11 @@ function gulpPrefixer(prefixText) {
         file.contents = file.contents.pipe(prefixStream(prefixText));
     }
 
-    this.push(file);
-    return callback();
+    callback(null, file);
 
   });
 
-  // returning the file stream
-  return stream;
+
 };
 
 // Exporting the plugin main function

From f19e11210b6191765754bf0e403100417d670682 Mon Sep 17 00:00:00 2001
From: Steve Lacy <me@slacy.me>
Date: Mon, 15 Sep 2014 19:34:41 -0700
Subject: [PATCH 2/2] merge

---
 docs/writing-a-plugin/guidelines.md | 26 +++++++++++---------------
 1 file changed, 11 insertions(+), 15 deletions(-)

diff --git a/docs/writing-a-plugin/guidelines.md b/docs/writing-a-plugin/guidelines.md
index 49ef5dbe7..1073162fa 100644
--- a/docs/writing-a-plugin/guidelines.md
+++ b/docs/writing-a-plugin/guidelines.md
@@ -56,7 +56,7 @@ var through = require('through2');
 var gutil = require('gulp-util');
 var PluginError = gutil.PluginError;
 
-// consts
+// Consts
 const PLUGIN_NAME = 'gulp-prefixer';
 
 function prefixStream(prefixText) {
@@ -65,37 +65,33 @@ function prefixStream(prefixText) {
   return stream;
 }
 
-// plugin level function (dealing with files)
+// Plugin level function(dealing with files)
 function gulpPrefixer(prefixText) {
+
   if (!prefixText) {
     throw new PluginError(PLUGIN_NAME, 'Missing prefix text!');
   }
-
   prefixText = new Buffer(prefixText); // allocate ahead of time
 
-  // creating a stream through which each file will pass
-  var stream = through.obj(function(file, enc, cb) {
+  // Creating a stream through which each file will pass
+  return through.obj(function(file, enc, callback) {
     if (file.isNull()) {
-       // do nothing if no contents
+      // return empty file
+      return callback(null, file);
     }
-
     if (file.isBuffer()) {
-        file.contents = Buffer.concat([prefixText, file.contents]);
+      file.contents = Buffer.concat([prefixText, file.contents]);
     }
-
     if (file.isStream()) {
-        file.contents = file.contents.pipe(prefixStream(prefixText));
+      file.contents = file.contents.pipe(prefixStream(prefixText));
     }
 
-    this.push(file);
+    return callback(null, file);
 
-    return cb();
   });
 
-  // returning the file stream
-  return stream;
 };
 
-// exporting the plugin main function
+// Exporting the plugin main function
 module.exports = gulpPrefixer;
 ```