Allow escaping of Blade echos using @ sign.

src/Illuminate/View/Compilers/BladeCompiler.php

@@ -190,9 +190,14 @@ protected function compileEchos($value)
	 */
	protected function compileRegularEchos($value)
	{
		$pattern = sprintf('/%s\s*(.+?)\s*%s/s', $this->contentTags[0], $this->contentTags[1]);
		$pattern = sprintf('/(@)?%s\s*(.+?)\s*%s/s', $this->contentTags[0], $this->contentTags[1]);

		return preg_replace($pattern, '<?php echo $1; ?>', $value);
		$callback = function($matches)
		{
			return $matches[1] ? substr($matches[0], 1) : '<?php echo '.$matches[2].'; ?>';
		};

		return preg_replace_callback($pattern, $callback, $value);
	}

	/**

tests/View/ViewBladeCompilerTest.php

@@ -74,6 +74,20 @@ public function testEchosAreCompiled()
	}


	public function testEscapedWithAtEchosAreCompiled()
	{
		$compiler = new BladeCompiler($this->getFiles(), __DIR__);
		$this->assertEquals('{{$name}}', $compiler->compileString('@{{$name}}'));
		$this->assertEquals('{{ $name }}', $compiler->compileString('@{{ $name }}'));
		$this->assertEquals('{{
			$name
		}}', 
		$compiler->compileString('@{{
			$name
		}}'));
	}


	public function testReversedEchosAreCompiled()
	{
		$compiler = new BladeCompiler($this->getFiles(), __DIR__);