Move enforceTrailingSlash to PageVariable; skip any paths that are files

src/PageVariable.php

@@ -32,10 +32,10 @@ public function __call($method, $args)
     public function getPath($key = null)
     {
         if (($key || $this->_meta->extending) && $this->_meta->path instanceof IterableObject) {
-            return enforceTrailingSlash($this->_meta->path->get($key ?: $this->getExtending()));
+            return $this->enforceTrailingSlash($this->_meta->path->get($key ?: $this->getExtending()));
         }
 
-        return enforceTrailingSlash((string) $this->_meta->path);
+        return $this->enforceTrailingSlash((string) $this->_meta->path);
     }
 
     public function getPaths()
@@ -46,10 +46,10 @@ public function getPaths()
     public function getUrl($key = null)
     {
         if (($key || $this->_meta->extending) && $this->_meta->path instanceof IterableObject) {
-            return enforceTrailingSlash($this->_meta->url->get($key ?: $this->getExtending()));
+            return $this->enforceTrailingSlash($this->_meta->url->get($key ?: $this->getExtending()));
         }
 
-        return enforceTrailingSlash((string) $this->_meta->url);
+        return $this->enforceTrailingSlash((string) $this->_meta->url);
     }
 
     public function getUrls()
@@ -61,4 +61,20 @@ protected function missingHelperError($functionName)
     {
         return 'No function named "' . $functionName . '" was found in the file "config.php".';
     }
+
+    protected function enforceTrailingSlash($path)
+    {
+        return $path && app()->config->get('trailing_slash') && ! $this->pathIsFile($path)
+            ? Str::finish($path, '/')
+            : $path;
+    }
+
+    protected function pathIsFile($path)
+    {
+        $final_extension = $this->_meta->extending
+            ? (Str::contains(Str::afterLast($path, '/'), '.') ? Str::afterLast($path, '.') : null)
+            : Str::afterLast($this->_meta->extension, '.');
+
+        return $final_extension && $final_extension !== 'md' && $final_extension !== 'php';
+    }
 }

src/Support/helpers.php

@@ -32,13 +32,6 @@ function trimPath($path)
     return rightTrimPath(leftTrimPath($path));
 }
 
-function enforceTrailingSlash($path)
-{
-    $c = Container::getInstance();
-
-    return Arr::get($c['config'], 'trailing_slash') ? Str::finish($path, '/') : $path;
-}
-
 function resolvePath($path)
 {
     $path = str_replace(['/', '\\'], DIRECTORY_SEPARATOR, $path);