diff --git a/src/Symfony/Component/Console/Formatter/OutputFormatter.php b/src/Symfony/Component/Console/Formatter/OutputFormatter.php
index 56cd5e568f16d..bf1c86d9b0e4f 100644
--- a/src/Symfony/Component/Console/Formatter/OutputFormatter.php
+++ b/src/Symfony/Component/Console/Formatter/OutputFormatter.php
@@ -139,7 +139,7 @@ public function format($message)
         $message = (string) $message;
         $offset = 0;
         $output = '';
-        $tagRegex = '[a-z][a-z0-9_=;-]*+';
+        $tagRegex = '[a-z][a-z0-9,_=;-]*+';
         preg_match_all("#<(($tagRegex) | /($tagRegex)?)>#ix", $message, $matches, PREG_OFFSET_CAPTURE);
         foreach ($matches[0] as $i => $match) {
             $pos = $match[1];
@@ -202,7 +202,7 @@ private function createStyleFromString($string)
             return $this->styles[$string];
         }
 
-        if (!preg_match_all('/([^=]+)=([^;]+)(;|$)/', strtolower($string), $matches, PREG_SET_ORDER)) {
+        if (!preg_match_all('/([^=]+)=([^;]+)(;|$)/', $string, $matches, PREG_SET_ORDER)) {
             return false;
         }
 
@@ -214,12 +214,20 @@ private function createStyleFromString($string)
                 $style->setForeground($match[1]);
             } elseif ('bg' == $match[0]) {
                 $style->setBackground($match[1]);
-            } else {
-                try {
-                    $style->setOption($match[1]);
-                } catch (\InvalidArgumentException $e) {
-                    return false;
+            } elseif ('options' === $match[0]) {
+                preg_match_all('([^,;]+)', $match[1], $options);
+                $options = array_shift($options);
+                foreach ($options as $option) {
+                    try {
+                        $style->setOption($option);
+                    } catch (\InvalidArgumentException $e) {
+                        trigger_error(sprintf('Unknown style options are deprecated since version 3.2 and will be removed in 4.0. Exception "%s".', $e->getMessage()), E_USER_DEPRECATED);
+
+                        return false;
+                    }
                 }
+            } else {
+                return false;
             }
         }
 
diff --git a/src/Symfony/Component/Console/Tests/Formatter/OutputFormatterTest.php b/src/Symfony/Component/Console/Tests/Formatter/OutputFormatterTest.php
index b8d5ca6d9bebb..fa47c4de0d992 100644
--- a/src/Symfony/Component/Console/Tests/Formatter/OutputFormatterTest.php
+++ b/src/Symfony/Component/Console/Tests/Formatter/OutputFormatterTest.php
@@ -11,6 +11,7 @@
 
 namespace Symfony\Component\Console\Tests\Formatter;
 
+use Symfony\Bridge\PhpUnit\ErrorAssert;
 use Symfony\Component\Console\Formatter\OutputFormatter;
 use Symfony\Component\Console\Formatter\OutputFormatterStyle;
 
@@ -152,6 +153,72 @@ public function testInlineStyle()
         $this->assertEquals("\033[34;41msome text\033[39;49m", $formatter->format('<fg=blue;bg=red>some text</fg=blue;bg=red>'));
     }
 
+    /**
+     * @param string      $tag
+     * @param string|null $expected
+     * @param string|null $input
+     *
+     * @dataProvider provideInlineStyleOptionsCases
+     */
+    public function testInlineStyleOptions($tag, $expected = null, $input = null)
+    {
+        $styleString = substr($tag, 1, -1);
+        $formatter = new OutputFormatter(true);
+        $method = new \ReflectionMethod($formatter, 'createStyleFromString');
+        $method->setAccessible(true);
+        $result = $method->invoke($formatter, $styleString);
+        if (null === $expected) {
+            $this->assertFalse($result);
+            $expected = $tag.$input.'</'.$styleString.'>';
+            $this->assertSame($expected, $formatter->format($expected));
+        } else {
+            /* @var OutputFormatterStyle $result */
+            $this->assertInstanceOf(OutputFormatterStyle::class, $result);
+            $this->assertSame($expected, $formatter->format($tag.$input.'</>'));
+            $this->assertSame($expected, $formatter->format($tag.$input.'</'.$styleString.'>'));
+        }
+    }
+
+    public function provideInlineStyleOptionsCases()
+    {
+        return array(
+            array('<unknown=_unknown_>'),
+            array('<unknown=_unknown_;a=1;b>'),
+            array('<fg=green;>', "\033[32m[test]\033[39m", '[test]'),
+            array('<fg=green;bg=blue;>', "\033[32;44ma\033[39;49m", 'a'),
+            array('<fg=green;options=bold>', "\033[32;1mb\033[39;22m", 'b'),
+            array('<fg=green;options=reverse;>', "\033[32;7m<a>\033[39;27m", '<a>'),
+            array('<fg=green;options=bold,underscore>', "\033[32;1;4mz\033[39;22;24m", 'z'),
+            array('<fg=green;options=bold,underscore,reverse;>', "\033[32;1;4;7md\033[39;22;24;27m", 'd'),
+        );
+    }
+
+    /**
+     * @group legacy
+     * @dataProvider provideInlineStyleTagsWithUnknownOptions
+     * @requires function Symfony\Bridge\PhpUnit\ErrorAssert::assertDeprecationsAreTriggered
+     */
+    public function testInlineStyleOptionsUnknownAreDeprecated($tag, $option)
+    {
+        ErrorAssert::assertDeprecationsAreTriggered(
+            array(sprintf('Unknown style options are deprecated since version 3.2 and will be removed in 4.0. Exception "Invalid option specified: "%s". Expected one of (bold, underscore, blink, reverse, conceal)".', $option)),
+            function () use ($tag) {
+                $formatter = new OutputFormatter(true);
+                $formatter->format($tag);
+            }
+        );
+    }
+
+    public function provideInlineStyleTagsWithUnknownOptions()
+    {
+        return array(
+            array('<options=abc;>', 'abc'),
+            array('<options=abc,def;>', 'abc'),
+            array('<fg=green;options=xyz;>', 'xyz'),
+            array('<fg=green;options=efg,abc>', 'efg'),
+        );
+    }
+
     public function testNonStyleTag()
     {
         $formatter = new OutputFormatter(true);