Merge branch '3.3' into 3.4

* 3.3:
  Misspelled word
  Display a better error design when the toolbar cannot be displayed
  do not validate empty values
  [Cache] fix cleanup of expired items for PdoAdapter
  [Dotenv] clean up before running assertions
  [Console] fix description of INF default values
  parse escaped quotes in unquoted env var values
  [PropertyAccess] Fix TypeError discard
  [Validator] Throw exception on Comparison constraints null options
  [FrameworkBundle] Display a proper warning on cache:clear without the --no-warmup option
  [Security] Fix Firewall ExceptionListener priority
  Identify tty tests in Component/Process
  [Workflow] Added more events to the announce function
  [Validator] Remove property path suggestion for using the Expression validator
  [WebProfilerBundle] Fix css trick used for offsetting html anchor from fixed header
  [Security] Fix annotation

Author: fabpot

Command/CacheClearCommand.php

@@ -77,7 +77,11 @@ protected function execute(InputInterface $input, OutputInterface $output)
         if ($input->getOption('no-warmup')) {
             $filesystem->rename($realCacheDir, $oldCacheDir);
         } else {
-            @trigger_error('Calling cache:clear without the --no-warmup option is deprecated since version 3.3. Cache warmup should be done with the cache:warmup command instead.', E_USER_DEPRECATED);
+            $warning = 'Calling cache:clear without the --no-warmup option is deprecated since version 3.3. Cache warmup should be done with the cache:warmup command instead.';
+
+            @trigger_error($warning, E_USER_DEPRECATED);
+
+            $io->warning($warning);
 
             $this->warmupCache($input, $output, $realCacheDir, $oldCacheDir);
         }