MAGETWO-34293: Html minification works incorrectly in Layered Navigation

Author: AndriyNasinnyk

app/code/Magento/Catalog/view/base/templates/product/price/amount/default.phtml

@@ -15,7 +15,7 @@
     <?php if ($block->getDisplayLabel()): ?>
         <span class="price-label"><?php echo $block->getDisplayLabel(); ?></span>
     <?php endif; ?>
-    <span<?php if ($block->getPriceId()): ?> id="<?php echo $block->getPriceId() ?>"<?php endif;?>
+    <span <?php if ($block->getPriceId()): ?> id="<?php echo $block->getPriceId() ?>"<?php endif;?>
         <?php echo($block->getPriceDisplayLabel()) ? 'data-label="' . $block->getPriceDisplayLabel() . $block->getPriceDisplayInclExclTaxes() . '"' : '' ?>
         data-price-amount="<?php echo $block->getAmount()->getValue(); ?>"
         data-price-type="<?php echo $block->getPriceType(); ?>"

lib/internal/Magento/Framework/Filesystem/Driver/File.php

@@ -741,4 +741,27 @@ public function getRealPath($path)
     {
         return realpath($path);
     }
+
+    /**
+     * Return correct path for link
+     *
+     * @param string $path
+     * @return mixed
+     */
+    public function getRealPathSafety($path)
+    {
+        $pathParts = explode(DIRECTORY_SEPARATOR, $path);
+        $realPath = [];
+        foreach ($pathParts as $pathPart) {
+            if ($pathPart == '.') {
+                continue;
+            }
+            if ($pathPart == '..') {
+                array_pop($realPath);
+                continue;
+            }
+            $realPath[] = $pathPart;
+        }
+        return implode(DIRECTORY_SEPARATOR, $realPath);
+    }
 }

lib/internal/Magento/Framework/Filesystem/DriverInterface.php

@@ -349,6 +349,14 @@ public function getAbsolutePath($basePath, $path, $scheme = null);
      */
     public function getRealPath($path);
 
+    /**
+     * Return correct path for link
+     *
+     * @param string $path
+     * @return mixed
+     */
+    public function getRealPathSafety($path);
+
     /**
      * @param string $basePath
      * @param null $path

lib/internal/Magento/Framework/View/Template/Html/Minifier.php

@@ -83,7 +83,7 @@ public function __construct(
      */
     public function getMinified($file)
     {
-        $file = $this->htmlDirectory->getDriver()->getRealPath($file);
+        $file = $this->htmlDirectory->getDriver()->getRealPathSafety($file);
         if (!$this->htmlDirectory->isExist($this->rootDirectory->getRelativePath($file))) {
             $this->minify($file);
         }

lib/internal/Magento/Framework/View/Test/Unit/Template/Html/MinifierTest.php

@@ -166,7 +166,7 @@ public function testGetMinified()
         $htmlDriver = $this->getMock('Magento\Framework\Filesystem\DriverInterface', [], [], '', false);
         $htmlDriver
             ->expects($this->once())
-            ->method('getRealPath')
+            ->method('getRealPathSafety')
             ->willReturn($file);
 
         $this->appDirectory