From 49ac30763ad8a3cfe2e2e6d3ae6b91520241191a Mon Sep 17 00:00:00 2001
From: Mario Campa <mcampa@gmail.com>
Date: Thu, 6 Apr 2017 13:03:17 -0700
Subject: [PATCH 1/2] Fix issue with realpath and php stream wrapper paths (ex.
 assets://scss/file.scss)

---
 src/Compiler.php | 28 +++++++++++++++++++++++++---
 1 file changed, 25 insertions(+), 3 deletions(-)

diff --git a/src/Compiler.php b/src/Compiler.php
index 68003b90..ccea71ba 100644
--- a/src/Compiler.php
+++ b/src/Compiler.php
@@ -3226,7 +3226,7 @@ public function getVariables()
     public function addParsedFile($path)
     {
         if (isset($path) && file_exists($path)) {
-            $this->parsedFiles[realpath($path)] = filemtime($path);
+            $this->parsedFiles[$this->realPath($path)] = filemtime($path);
         }
     }
 
@@ -3351,7 +3351,7 @@ public function addFeature($name)
     protected function importFile($path, $out)
     {
         // see if tree is cached
-        $realPath = realpath($path);
+        $realPath = $this->realPath($path);
 
         if (isset($this->importCache[$realPath])) {
             $this->handleImportLoop($realPath);
@@ -3371,6 +3371,28 @@ protected function importFile($path, $out)
         array_shift($this->importPaths);
     }
 
+    /**
+     * Return canonicalized path
+     *
+     * @param string $path
+     *
+     * @return string|null
+     */
+    protected function realPath($path)
+    {
+        $path = explode(DIRECTORY_SEPARATOR, $path);
+        $keys = array_keys($path, '..');
+
+        foreach($keys AS $keypos => $key)
+        {
+            array_splice($path, $key - ($keypos * 2 + 1), 2);
+        }
+
+        $path = implode(DIRECTORY_SEPARATOR, $path);
+
+        return str_replace('.' . DIRECTORY_SEPARATOR, '', $path);
+    }
+
     /**
      * Return the file path for an import url if it exists
      *
@@ -3482,7 +3504,7 @@ protected function handleImportLoop($name)
         for ($env = $this->env; $env; $env = $env->parent) {
             $file = $this->sourceNames[$env->block->sourceIndex];
 
-            if (realpath($file) === $name) {
+            if ($this->realPath($file) === $name) {
                 $this->throwError('An @import loop has been found: %s imports %s', $file, basename($file));
                 break;
             }

From 23ad29c1cd0ffb5d80e355966a8083c264264f36 Mon Sep 17 00:00:00 2001
From: Mario Campa <mcampa@gmail.com>
Date: Sun, 4 Nov 2018 19:36:41 -0800
Subject: [PATCH 2/2] fix php 7.2 warning

---
 src/Node/Number.php | 13 +++----------
 1 file changed, 3 insertions(+), 10 deletions(-)

diff --git a/src/Node/Number.php b/src/Node/Number.php
index d4f406fa..976c8051 100644
--- a/src/Node/Number.php
+++ b/src/Node/Number.php
@@ -266,33 +266,26 @@ public function unitStr()
     public function output(Compiler $compiler = null)
     {
         $dimension = round($this->dimension, static::$precision);
-
         $units = array_filter($this->units, function ($unitSize) {
             return $unitSize;
         });
-
         if (count($units) > 1 && array_sum($units) === 0) {
             $dimension = $this->dimension;
             $units     = [];
-
             $this->normalizeUnits($dimension, $units, 'in');
-
             $dimension = round($dimension, static::$precision);
             $units     = array_filter($units, function ($unitSize) {
                 return $unitSize;
             });
         }
-
         $unitSize = array_sum($units);
-
         if ($compiler && ($unitSize > 1 || $unitSize < 0 || count($units) > 1)) {
             $compiler->throwError((string) $dimension . $this->unitStr() . " isn't a valid CSS value.");
         }
-
         reset($units);
-        list($unit, ) = each($units);
-
-        return (string) $dimension . $unit;
+        $unit = key($units);
+        $dimension = number_format($dimension, static::$precision, '.', '');
+        return (static::$precision ? rtrim(rtrim($dimension, '0'), '.') : $dimension) . $unit;
     }
 
     /**