diff --git a/src/Composer/Autoload/ClassMapGenerator.php b/src/Composer/Autoload/ClassMapGenerator.php
index d4d2b0b6e..649c700c8 100644
--- a/src/Composer/Autoload/ClassMapGenerator.php
+++ b/src/Composer/Autoload/ClassMapGenerator.php
@@ -90,7 +90,8 @@ class ClassMapGenerator
                 $filePath = preg_replace('{[\\\\/]{2,}}', '/', $filePath);
             }
 
-            if ($blacklist && preg_match($blacklist, strtr($filePath, '\\', '/'))) {
+            // check the realpath of the file against the blacklist as the path might be a symlink and the blacklist is realpath'd so symlink are resolved
+            if ($blacklist && preg_match($blacklist, strtr(realpath($filePath), '\\', '/'))) {
                 continue;
             }
 
diff --git a/src/Composer/Command/ShowCommand.php b/src/Composer/Command/ShowCommand.php
index 03542210e..e9ffbe029 100644
--- a/src/Composer/Command/ShowCommand.php
+++ b/src/Composer/Command/ShowCommand.php
@@ -353,7 +353,7 @@ EOT
                         }
                         if ($input->getOption('outdated') && $latestPackage && $latestPackage->getFullPrettyVersion() === $package->getFullPrettyVersion() && !$latestPackage->isAbandoned()) {
                             continue;
-                        } elseif ($input->getOption('outdated')) {
+                        } elseif ($input->getOption('outdated') || $input->getOption('strict')) {
                             $hasOutdatedPackages = true;
                         }
 
diff --git a/src/Composer/Installer.php b/src/Composer/Installer.php
index 72a86116a..5d70832b2 100644
--- a/src/Composer/Installer.php
+++ b/src/Composer/Installer.php
@@ -1199,10 +1199,12 @@ class Installer
         }
 
         $package->setSourceReference($reference);
-        $package->setDistReference($reference);
 
         if (preg_match('{^https?://(?:(?:www\.)?bitbucket\.org|(api\.)?github\.com)/}i', $package->getDistUrl())) {
+            $package->setDistReference($reference);
             $package->setDistUrl(preg_replace('{(?<=/)[a-f0-9]{40}(?=/|$)}i', $reference, $package->getDistUrl()));
+        } else if ($package->getDistReference()) { // update the dist reference if there was one, but if none was provided ignore it
+            $package->setDistReference($reference);
         }
     }