diff --git a/phpBB/includes/acp/acp_extensions.php b/phpBB/includes/acp/acp_extensions.php
index bbb27159b1..eec896cbfe 100644
--- a/phpBB/includes/acp/acp_extensions.php
+++ b/phpBB/includes/acp/acp_extensions.php
@@ -598,6 +598,7 @@ class acp_extensions
 					$this->config->set('exts_composer_enable_on_install', $enable_on_install);
 					$this->config->set('exts_composer_purge_on_remove', $purge_on_remove);
 					$this->config->set('exts_composer_repositories', serialize($repositories));
+
 					if (!$this->config['exts_composer_packagist'] && $enable_packagist)
 					{
 						$s_hidden_fields = build_hidden_fields(array(
diff --git a/phpBB/phpbb/composer/extension_manager.php b/phpBB/phpbb/composer/extension_manager.php
index d877d28676..8b2388e693 100644
--- a/phpBB/phpbb/composer/extension_manager.php
+++ b/phpBB/phpbb/composer/extension_manager.php
@@ -17,8 +17,8 @@ use Composer\IO\IOInterface;
 use phpbb\cache\driver\driver_interface;
 use phpbb\composer\exception\managed_with_clean_error_exception;
 use phpbb\composer\exception\managed_with_enable_error_exception;
-use phpbb\composer\exception\managed_with_error_exception;
 use phpbb\composer\exception\runtime_exception;
+use phpbb\config\config;
 use phpbb\extension\manager as ext_manager;
 use phpbb\filesystem\exception\filesystem_exception;
 use phpbb\filesystem\filesystem;
@@ -43,6 +43,16 @@ class extension_manager extends manager
 	 */
 	private $enabled_extensions;
 
+	/**
+	 * @var bool Enables extensions when installing them?
+	 */
+	private $enable_on_install = false;
+
+	/**
+	 * @var bool Purges extensions data when removing them?
+	 */
+	private $purge_on_remove = false;
+
 	/**
 	 * @param installer			$installer			Installer object
 	 * @param driver_interface	$cache				Cache object
@@ -50,12 +60,19 @@ class extension_manager extends manager
 	 * @param filesystem		$filesystem			Filesystem object
 	 * @param string			$package_type		Composer type of managed packages
 	 * @param string			$exception_prefix	Exception prefix to use
+	 * @param config			$config				Config object
 	 */
-	public function __construct(installer $installer, driver_interface $cache, ext_manager $extension_manager, filesystem $filesystem, $package_type, $exception_prefix)
+	public function __construct(installer $installer, driver_interface $cache, ext_manager $extension_manager, filesystem $filesystem, $package_type, $exception_prefix, config $config = null)
 	{
 		$this->extension_manager = $extension_manager;
 		$this->filesystem = $filesystem;
 
+		if ($config)
+		{
+			$this->enable_on_install = (bool) $config['exts_composer_enable_on_install'];
+			$this->purge_on_remove   = (bool) $config['exts_composer_purge_on_remove'];
+		}
+
 		parent::__construct($installer, $cache, $package_type, $exception_prefix);
 	}
 
@@ -71,6 +88,32 @@ class extension_manager extends manager
 		}
 	}
 
+	/**
+	 * {@inheritdoc}
+	 */
+	public function post_install(array $packages, IOInterface $io = null)
+	{
+		if ($this->enable_on_install)
+		{
+			$io->writeError('ENABLING_EXTENSIONS', true, 1);
+			foreach ($packages as $package)
+			{
+				try
+				{
+					$this->extension_manager->enable($package);
+				}
+				catch (\phpbb\exception\runtime_exception $e)
+				{
+					$io->writeError([$e->getMessage(), $e->get_parameters()], true, 4);
+				}
+				catch (\Exception $e)
+				{
+					$io->writeError($e->getMessage(), true, 4);
+				}
+			}
+		}
+	}
+
 	/**
 	 * {@inheritdoc}
 	 */
@@ -143,14 +186,25 @@ class extension_manager extends manager
 	 */
 	public function pre_remove(array $packages, IOInterface $io = null)
 	{
-		$io->writeError('DISABLING_EXTENSIONS', true, 1);
+		if ($this->purge_on_remove)
+		{
+			$io->writeError('DISABLING_EXTENSIONS', true, 1);
+		}
+
 		foreach ($packages as $package)
 		{
 			try
 			{
 				if ($this->extension_manager->is_enabled($package))
 				{
-					$this->extension_manager->disable($package);
+					if ($this->purge_on_remove)
+					{
+						$this->extension_manager->purge($package);
+					}
+					else
+					{
+						$this->extension_manager->disable($package);
+					}
 				}
 			}
 			catch (\phpbb\exception\runtime_exception $e)
@@ -227,4 +281,26 @@ class extension_manager extends manager
 			}
 		}
 	}
+
+	/**
+	 * Enable the extensions when installing
+	 *
+	 * Warning: Only the explicitly required extensions will be enabled
+	 *
+	 * @param bool $enable
+	 */
+	public function set_enable_on_install($enable)
+	{
+		$this->enable_on_install = $enable;
+	}
+
+	/**
+	 * Purge the extension when disabling it
+	 *
+	 * @param bool $purge
+	 */
+	public function set_purge_on_remove($purge)
+	{
+		$this->purge_on_remove = $purge;
+	}
 }
diff --git a/phpBB/phpbb/composer/installer.php b/phpBB/phpbb/composer/installer.php
index 1640c334f0..4488aadb82 100644
--- a/phpBB/phpbb/composer/installer.php
+++ b/phpBB/phpbb/composer/installer.php
@@ -222,9 +222,11 @@ class installer
 
 			foreach ($installed_packages as $package)
 			{
-				if (array_key_exists($package->getName(), $required_links) && in_array($package->getType(), $types, true))
+				if (in_array($package->getType(), $types, true))
 				{
-					$installed[$package->getName()] = $required_links[$package->getName()]->getPrettyConstraint();
+					$version = array_key_exists($package->getName(), $required_links) ?
+						$required_links[$package->getName()]->getPrettyConstraint() : '*';
+					$installed[$package->getName()] = $version;
 				}
 			}
 
diff --git a/phpBB/phpbb/console/command/extension/install.php b/phpBB/phpbb/console/command/extension/install.php
index aa9d5a6867..6365da4a0c 100644
--- a/phpBB/phpbb/console/command/extension/install.php
+++ b/phpBB/phpbb/console/command/extension/install.php
@@ -13,19 +13,20 @@
 
 namespace phpbb\console\command\extension;
 
+use phpbb\composer\extension_manager;
 use phpbb\composer\io\console_io;
-use phpbb\composer\manager_interface;
 use phpbb\language\language;
 use Symfony\Component\Console\Formatter\OutputFormatterStyle;
 use Symfony\Component\Console\Input\InputArgument;
 use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
 use Symfony\Component\Console\Output\OutputInterface;
 use Symfony\Component\Console\Style\SymfonyStyle;
 
 class install extends \phpbb\console\command\command
 {
 	/**
-	 * @var manager_interface Composer extensions manager
+	 * @var extension_manager Composer extensions manager
 	 */
 	protected $manager;
 
@@ -34,11 +35,13 @@ class install extends \phpbb\console\command\command
 	 */
 	protected $language;
 
-	public function __construct(\phpbb\user $user, manager_interface $manager, language $language)
+	public function __construct(\phpbb\user $user, extension_manager $manager, language $language)
 	{
 		$this->manager = $manager;
 		$this->language = $language;
 
+		$language->add_lang('acp/extensions');
+
 		parent::__construct($user);
 	}
 
@@ -51,11 +54,16 @@ class install extends \phpbb\console\command\command
 	{
 		$this
 			->setName('extension:install')
-			->setDescription($this->user->lang('CLI_DESCRIPTION_EXTENSION_INSTALL'))
+			->setDescription($this->language->lang('CLI_DESCRIPTION_EXTENSION_INSTALL'))
+			->addOption(
+				'enable',
+				'e',
+				InputOption::VALUE_NONE,
+				$this->language->lang('CLI_DESCRIPTION_EXTENSION_INSTALL_OPTION_ENABLE'))
 			->addArgument(
 				'extensions',
 				InputArgument::IS_ARRAY | InputArgument::REQUIRED,
-				$this->user->lang('CLI_DESCRIPTION_EXTENSION_INSTALL'))
+				$this->language->lang('CLI_DESCRIPTION_EXTENSION_INSTALL_ARGUMENT'))
 		;
 	}
 
@@ -74,9 +82,14 @@ class install extends \phpbb\console\command\command
 		$composer_io = new console_io($input, $output, $this->getHelperSet(), $this->language);
 		$extensions = $input->getArgument('extensions');
 
+		if ($input->getOption('enable'))
+		{
+			$this->manager->set_enable_on_install(true);
+		}
+
 		$this->manager->install($extensions, $composer_io);
 
-		$io->success('All extensions installed');
+		$io->success($this->language->lang('EXTENSIONS_INSTALLED'));
 
 		return 0;
 	}
diff --git a/phpBB/phpbb/console/command/extension/list_available.php b/phpBB/phpbb/console/command/extension/list_available.php
index c844201fd3..2da8a98845 100644
--- a/phpBB/phpbb/console/command/extension/list_available.php
+++ b/phpBB/phpbb/console/command/extension/list_available.php
@@ -35,6 +35,8 @@ class list_available extends \phpbb\console\command\command
 	{
 		$this->manager = $manager;
 
+		$user->add_lang('acp/extensions');
+
 		parent::__construct($user);
 	}
 
diff --git a/phpBB/phpbb/console/command/extension/remove.php b/phpBB/phpbb/console/command/extension/remove.php
index d1f59dec5c..181401e825 100644
--- a/phpBB/phpbb/console/command/extension/remove.php
+++ b/phpBB/phpbb/console/command/extension/remove.php
@@ -13,19 +13,20 @@
 
 namespace phpbb\console\command\extension;
 
+use phpbb\composer\extension_manager;
 use phpbb\composer\io\console_io;
-use phpbb\composer\manager_interface;
 use phpbb\language\language;
 use Symfony\Component\Console\Formatter\OutputFormatterStyle;
 use Symfony\Component\Console\Input\InputArgument;
 use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
 use Symfony\Component\Console\Output\OutputInterface;
 use Symfony\Component\Console\Style\SymfonyStyle;
 
 class remove extends \phpbb\console\command\command
 {
 	/**
-	 * @var manager_interface Composer extensions manager
+	 * @var extension_manager Composer extensions manager
 	 */
 	protected $manager;
 
@@ -34,11 +35,13 @@ class remove extends \phpbb\console\command\command
 	 */
 	protected $language;
 
-	public function __construct(\phpbb\user $user, manager_interface $manager, language $language)
+	public function __construct(\phpbb\user $user, extension_manager $manager, language $language)
 	{
 		$this->manager = $manager;
 		$this->language = $language;
 
+		$language->add_lang('acp/extensions');
+
 		parent::__construct($user);
 	}
 
@@ -51,11 +54,16 @@ class remove extends \phpbb\console\command\command
 	{
 		$this
 			->setName('extension:remove')
-			->setDescription($this->user->lang('CLI_DESCRIPTION_EXTENSION_REMOVE'))
+			->setDescription($this->language->lang('CLI_DESCRIPTION_EXTENSION_REMOVE'))
+			->addOption(
+				'purge',
+				'p',
+				InputOption::VALUE_NONE,
+				$this->language->lang('CLI_DESCRIPTION_EXTENSION_REMOVE_OPTION_URGE'))
 			->addArgument(
 				'extensions',
 				InputArgument::IS_ARRAY | InputArgument::REQUIRED,
-				$this->user->lang('CLI_DESCRIPTION_EXTENSION_REMOVE'))
+				$this->language->lang('CLI_DESCRIPTION_EXTENSION_REMOVE'))
 		;
 	}
 
@@ -74,9 +82,14 @@ class remove extends \phpbb\console\command\command
 		$composer_io = new console_io($input, $output, $this->getHelperSet(), $this->language);
 		$extensions = $input->getArgument('extensions');
 
+		if ($input->getOption('purge'))
+		{
+			$this->manager->set_purge_on_remove(true);
+		}
+
 		$this->manager->remove($extensions, $composer_io);
 
-		$io->success('All extensions removed');
+		$io->success($this->language->lang('EXTENSIONS_REMOVED'));
 
 		return 0;
 	}