Remove ANSI control characters from suggested packages output.

src/Composer/Installer/SuggestedPackagesReporter.php

@@ -116,11 +116,24 @@ class SuggestedPackagesReporter
             $this->io->writeError(sprintf(
                 '%s suggests installing %s (%s)',
                 $suggestion['source'],
-                $suggestion['target'],
-                $suggestion['reason']
+                $this->removeControlCharacters($suggestion['target']),
+                $this->removeControlCharacters($suggestion['reason'])
             ));
         }
 
         return $this;
     }
+
+    /**
+     * @param string $string
+     * @return string
+     */
+    private function removeControlCharacters($string)
+    {
+        return preg_replace(
+            '/[[:cntrl:]]/',
+            '',
+            str_replace("\n", ' ', $string)
+        );
+    }
 }

tests/Composer/Test/Installer/SuggestedPackagesReporterTest.php

@@ -144,6 +144,20 @@ class SuggestedPackagesReporterTest extends \PHPUnit_Framework_TestCase
         $this->suggestedPackagesReporter->output();
     }
 
+    /**
+     * @covers ::output
+     */
+    public function testOutputIgnoresFormatting()
+    {
+        $this->suggestedPackagesReporter->addPackage('source', 'target', "\x1b[1;37;42m Like us\r\non Facebook \x1b[0m");
+
+        $this->io->expects($this->once())
+            ->method('writeError')
+            ->with("source suggests installing target ([1;37;42m Like us on Facebook [0m)");
+
+        $this->suggestedPackagesReporter->output();
+    }
+
     /**
      * @covers ::output
      */