Render all line breaks according to the exception message

src/Symfony/Component/Console/Application.php

@@ -681,7 +681,7 @@ class Application
                 $width = 1 << 31;
             }
             $lines = array();
-            foreach (preg_split('/\r?\n/', $e->getMessage()) as $line) {
+            foreach (preg_split('/\r?\n/', trim($e->getMessage())) as $line) {
                 foreach ($this->splitStringByWidth($line, $width - 4) as $line) {
                     // pre-format lines to get the right string length
                     $lineLength = Helper::strlen($line) + 4;
@@ -1133,9 +1133,8 @@ class Application
             $lines[] = str_pad($line, $width);
             $line = $char;
         }
-        if ('' !== $line) {
-            $lines[] = count($lines) ? str_pad($line, $width) : $line;
-        }
+
+        $lines[] = count($lines) ? str_pad($line, $width) : $line;
 
         mb_convert_variables($encoding, 'utf8', $lines);
 

src/Symfony/Component/Console/Tests/ApplicationTest.php

@@ -608,6 +608,22 @@ class ApplicationTest extends TestCase
         $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception_escapeslines.txt', $tester->getDisplay(true), '->renderException() escapes lines containing formatting');
     }
 
+    public function testRenderExceptionLineBreaks()
+    {
+        $application = $this->getMockBuilder('Symfony\Component\Console\Application')->setMethods(array('getTerminalWidth'))->getMock();
+        $application->setAutoExit(false);
+        $application->expects($this->any())
+            ->method('getTerminalWidth')
+            ->will($this->returnValue(120));
+        $application->register('foo')->setCode(function () {
+            throw new \InvalidArgumentException("\n\nline 1 with extra spaces        \nline 2\n\nline 4\n");
+        });
+        $tester = new ApplicationTester($application);
+
+        $tester->run(array('command' => 'foo'), array('decorated' => false));
+        $this->assertStringEqualsFile(self::$fixturesPath.'/application_renderexception_linebreaks.txt', $tester->getDisplay(true), '->renderException() keep multiple line breaks');
+    }
+
     public function testRun()
     {
         $application = new Application();

src/Symfony/Component/Console/Tests/Fixtures/application_renderexception_linebreaks.txt

@@ -0,0 +1,11 @@
+
+                                    
+  [InvalidArgumentException]        
+  line 1 with extra spaces          
+  line 2                            
+                                    
+  line 4                            
+                                    
+
+foo
+