From 429116e4492c6e39be1162434e155e8e62df3648 Mon Sep 17 00:00:00 2001
From: Keith Cirkel <github@keithcirkel.co.uk>
Date: Sun, 12 Apr 2015 22:57:41 +0100
Subject: [PATCH] Ensure _loaderHelpers registers actual filenames

Slicing a path by the last 3 characters works for two character
extensions, e.g. `'.js'` or `'.cs'` but not for longer extensions
(`'.es6'`, `'.javascript'`, `'.coffeescript'` for example).

Using `Path.extname` will extract the proper extension from a path,
which can then be used to determine the length of the extension proper,
and thereby allowing helpers with longer extension names.
---
 lib/manager.js                               | 2 +-
 test/templates/valid/helpers/long.javascript | 4 ++++
 test/templates/valid/testHelpers.html        | 2 +-
 3 files changed, 6 insertions(+), 2 deletions(-)
 create mode 100644 test/templates/valid/helpers/long.javascript

diff --git a/lib/manager.js b/lib/manager.js
index 857854f..b0f43cd 100755
--- a/lib/manager.js
+++ b/lib/manager.js
@@ -251,7 +251,7 @@ internals.Manager.prototype._loadHelpers = function (engine) {
                     var helper = require(file);
                     if (typeof helper === 'function') {
                         var offset = path.slice(-1) === Path.sep ? 0 : 1;
-                        var name = file.slice(path.length + offset, -3);
+                        var name = file.slice(path.length + offset, -Path.extname(file).length);
                         engine.module.registerHelper(name, helper);
                     }
                 }
diff --git a/test/templates/valid/helpers/long.javascript b/test/templates/valid/helpers/long.javascript
new file mode 100644
index 0000000..40ecae0
--- /dev/null
+++ b/test/templates/valid/helpers/long.javascript
@@ -0,0 +1,4 @@
+exports = module.exports = function (context) {
+
+    return context;
+};
diff --git a/test/templates/valid/testHelpers.html b/test/templates/valid/testHelpers.html
index 916780b..c9a59bc 100755
--- a/test/templates/valid/testHelpers.html
+++ b/test/templates/valid/testHelpers.html
@@ -1 +1 @@
-<p>This is all {{uppercase this.something}} and this is how we like it!</p>
\ No newline at end of file
+<p>This is all {{uppercase this.something}} and this is {{long "how"}} we like it!</p>
\ No newline at end of file