diff --git a/composer.json b/composer.json
index 26272e7..fa85f36 100644
--- a/composer.json
+++ b/composer.json
@@ -1,6 +1,6 @@
 {
   "name": "newtron/core",
-  "version": "0.1.4",
+  "version": "0.1.5",
   "type": "library",
   "description": "Core framework package for Newtron",
   "homepage": "https://github.com/newtron-framework/core",
diff --git a/src/Quark/QuarkCompiler.php b/src/Quark/QuarkCompiler.php
index df83be9..c229e90 100644
--- a/src/Quark/QuarkCompiler.php
+++ b/src/Quark/QuarkCompiler.php
@@ -126,7 +126,7 @@ private function registerBuiltinDirectives(): void {
    */
   private function tokenize(string $source): array {
     $tokens = [];
-    $pattern = '/\{\{(.*?)\}\}|(~[a-zA-Z\-_]+\([^~]*\))/s';
+    $pattern = '/\{\{(.*?)\}\}|\{~(.*?)~\}/s';
     $lastPos = 0;
 
     preg_match_all($pattern, $source, $matches, PREG_OFFSET_CAPTURE);
@@ -167,7 +167,7 @@ private function tokenize(string $source): array {
    * @throws \Exception If the directive syntax is invalid
    */
   private function parseDirective(string $directive): array {
-    if (preg_match('/^~(\w+)\((.*)\)$/', $directive, $matches)) {
+    if (preg_match('/^(\w+)(?:\s+(.+))?$/', $directive, $matches)) {
       return [
         'type' => 'directive',
         'name' => $matches[1],
diff --git a/tests/Unit/Quark/QuarkCompilerTest.php b/tests/Unit/Quark/QuarkCompilerTest.php
index 297cca7..5dbf5c3 100644
--- a/tests/Unit/Quark/QuarkCompilerTest.php
+++ b/tests/Unit/Quark/QuarkCompilerTest.php
@@ -52,7 +52,7 @@ public function testAddDirective(): void {
     $this->assertArrayHasKey('test', $directives);
     $this->assertEquals(
       "<?php\necho '<div>';\necho 'test_directive_ran';\necho '</div>';\n",
-      $this->compiler->compile('<div>~test()</div>')
+      $this->compiler->compile('<div>{~ test ~}</div>')
     );
   }
 
@@ -68,7 +68,7 @@ public function testTokenizeSource(): void {
         ['type' => 'text', 'content' => '</div>'],
         ['type' => 'directive', 'name' => 'outlet', 'args' => ''],
       ],
-      $method->invoke($this->compiler, '<div>{{ test }}</div>~outlet()')
+      $method->invoke($this->compiler, '<div>{{ test }}</div>{~ outlet ~}')
     );
   }
 
@@ -79,7 +79,7 @@ public function testParseDirective(): void {
 
     $this->assertEquals(
       ['type' => 'directive', 'name' => 'outlet', 'args' => 'custom'],
-      $method->invoke($this->compiler, '~outlet(custom)')
+      $method->invoke($this->compiler, 'outlet custom')
     );
   }
 
diff --git a/tests/Unit/Quark/QuarkEngineTest.php b/tests/Unit/Quark/QuarkEngineTest.php
index 948bbcc..c939818 100644
--- a/tests/Unit/Quark/QuarkEngineTest.php
+++ b/tests/Unit/Quark/QuarkEngineTest.php
@@ -45,8 +45,8 @@ public function testRenderTemplate(): void {
   }
 
   public function testRenderTemplateWithLayout(): void {
-    $this->createTestTemplate('layout', '<div>~outlet()</div>');
-    $this->createTestTemplate('test', '~layout(layout)<p>{{ test }}</p>');
+    $this->createTestTemplate('layout', '<div>{~ outlet ~}</div>');
+    $this->createTestTemplate('test', '{~ layout layout ~}<p>{{ test }}</p>');
 
     $this->assertEquals(
       '<div><p>Test Value</p></div>',
@@ -55,7 +55,7 @@ public function testRenderTemplateWithLayout(): void {
   }
 
   public function testRenderTemplateWithRootLayout(): void {
-    $this->createTestTemplate('root', '<div>~outlet()</div>');
+    $this->createTestTemplate('root', '<div>{~ outlet ~}</div>');
     $this->createTestTemplate('test', '<p>{{ test }}</p>');
     $this->engine->setRootLayout('root');
 
@@ -66,7 +66,7 @@ public function testRenderTemplateWithRootLayout(): void {
   }
 
   public function testRenderTemplateWithSkipRootLayout(): void {
-    $this->createTestTemplate('root', '<div>~outlet()</div>');
+    $this->createTestTemplate('root', '<div>{~ outlet ~}</div>');
     $this->createTestTemplate('test', '<p>{{ test }}</p>');
     $this->engine->setRootLayout('root');
     $this->engine->skipRootLayout();
@@ -78,8 +78,8 @@ public function testRenderTemplateWithSkipRootLayout(): void {
   }
 
   public function testRenderTemplateWithSkipRootDirective(): void {
-    $this->createTestTemplate('root', '<div>~outlet()</div>');
-    $this->createTestTemplate('test', '~skip_root()<p>{{ test }}</p>');
+    $this->createTestTemplate('root', '<div>{~ outlet ~}</div>');
+    $this->createTestTemplate('test', '{~ skip_root ~}<p>{{ test }}</p>');
     $this->engine->setRootLayout('root');
 
     $this->assertEquals(
@@ -89,8 +89,8 @@ public function testRenderTemplateWithSkipRootDirective(): void {
   }
 
   public function testRenderTemplateWithCustomOutlet(): void {
-    $this->createTestTemplate('layout', '<div>~outlet(custom)</div>');
-    $this->createTestTemplate('test', '~layout(layout)~slot(custom)<p>{{ test }}</p>~endslot()');
+    $this->createTestTemplate('layout', '<div>{~ outlet custom ~}</div>');
+    $this->createTestTemplate('test', '{~ layout layout ~}{~ slot custom ~}<p>{{ test }}</p>{~ endslot ~}');
 
     $this->assertEquals(
       '<div><p>Test Value</p></div>',
@@ -99,7 +99,7 @@ public function testRenderTemplateWithCustomOutlet(): void {
   }
 
   public function testRenderTemplateWithInclude(): void {
-    $this->createTestTemplate('test', '<div>~include(included)</div>');
+    $this->createTestTemplate('test', '<div>{~ include included ~}</div>');
     $this->createTestTemplate('included', '<p>Included</p>');
 
     $this->assertEquals(
@@ -109,7 +109,7 @@ public function testRenderTemplateWithInclude(): void {
   }
 
   public function testRenderTemplateWithIf(): void {
-    $this->createTestTemplate('test', '<div>~if($test)True~endif()</div>');
+    $this->createTestTemplate('test', '<div>{~ if $test ~}True{~ endif ~}</div>');
 
     $this->assertEquals(
       '<div></div>',
@@ -124,7 +124,7 @@ public function testRenderTemplateWithIf(): void {
   public function testRenderTemplateWithIfWithElses(): void {
     $this->createTestTemplate(
       'test',
-      '<div>~if($test == 1)One~elseif($test == 2)Two~else()None~endif()</div>'
+      '<div>{~ if $test == 1 ~}One{~ elseif $test == 2 ~}Two{~ else ~}None{~ endif ~}</div>'
     );
 
     $this->assertEquals(
@@ -144,7 +144,7 @@ public function testRenderTemplateWithIfWithElses(): void {
   public function testRenderTemplateWithForeach(): void {
     $this->createTestTemplate(
       'test',
-      '<div>~foreach($test as $item)<p>{{ $item[\'name\'] }}</p>~endforeach()</div>'
+      '<div>{~ foreach $test as $item ~}<p>{{ $item[\'name\'] }}</p>{~ endforeach ~}</div>'
     );
 
     $this->assertEquals(
@@ -160,7 +160,7 @@ public function testRenderTemplateWithForeach(): void {
   public function testRenderTemplateWithSet(): void {
     $this->createTestTemplate(
       'test',
-      '<div>~if($test)~set($text = \'new_value\')~endif(){{ text }}</div>'
+      '<div>{~ if $test ~}{~ set $text = \'new_value\' ~}{~ endif ~}{{ text }}</div>'
     );
 
     $this->assertEquals(