Alternative representation

system/src/Grav/Common/Page/Page.php

@@ -179,6 +179,41 @@ protected function processFrontmatter()
         }
     }
 
+    /**
+     * Return a different representation of the same page.
+     * Place a new file named _<representation>.md next to the current
+     * markdown file.
+     *
+     * @param string $representation the name of the alternative representation.
+     *
+     * @return Page A new instance of Page or null if the representation does not
+     * exists or is not published.
+     */
+    public function alternativeRepresentation($representation)
+    {
+        $returnValue;
+
+        $path = $this->path . DS . $this->folder . DS . '_' . $representation . '.md';
+        if (file_exists($path)) {
+            $aPage = new Page();
+            $aPage->init(new \SplFileInfo($path), '.md');
+
+            if (!$aPage->published()) {
+                $returnValue = null;
+            }
+            else {
+                // Removes the '_'
+                $aPage->template(($this->modular() ? 'modular/' : '') . $representation);
+                $returnValue = $aPage;
+            }
+        }
+        else {
+            $returnValue = null;
+        }
+
+        return $returnValue;
+    }
+
     /**
      * Return an array with the routes of other translated languages
      *

system/src/Grav/Common/Page/Pages.php

@@ -1086,7 +1086,7 @@ protected function recurse($directory, PageInterface $parent = null)
 
         // Build regular expression for all the allowed page extensions.
         $page_extensions = $language->getFallbackPageExtensions();
-        $regex = '/^[^\.]*(' . implode('|', array_map(
+        $regex = '/^[^\._]*(' . implode('|', array_map(
             function ($str) {
                 return preg_quote($str, '/');
             },