[Console] Don't load same-namespace alternatives on exact match

src/Symfony/Component/Console/Application.php

@@ -645,7 +645,15 @@ public function find($name)
         // filter out aliases for commands which are already on the list
         if (\count($commands) > 1) {
             $commandList = $this->commandLoader ? array_merge(array_flip($this->commandLoader->getNames()), $this->commands) : $this->commands;
-            $commands = array_unique(array_filter($commands, function ($nameOrAlias) use (&$commandList, $commands, &$aliases) {
+
+            if (isset($commandList[$name])) {
+                return $this->get($name);
+            }
+
+            foreach ($commands as $k => $nameOrAlias) {
+                if ($nameOrAlias === $name) {
+                    return $this->get($nameOrAlias);
+                }
                 if (!$commandList[$nameOrAlias] instanceof Command) {
                     $commandList[$nameOrAlias] = $this->commandLoader->get($nameOrAlias);
                 }
@@ -654,8 +662,14 @@ public function find($name)
 
                 $aliases[$nameOrAlias] = $commandName;
 
-                return $commandName === $nameOrAlias || !\in_array($commandName, $commands);
-            }));
+                if ($commandName === $nameOrAlias || !\in_array($commandName, $commands)) {
+                    continue;
+                }
+
+                unset($commands[$k]);
+            }
+
+            $commands = array_unique($commands);
         }
 
         $exact = \in_array($name, $commands, true) || isset($aliases[$name]);

src/Symfony/Component/Console/Tests/ApplicationTest.php

@@ -1642,6 +1642,31 @@ public function testAllExcludesDisabledLazyCommand()
         $this->assertArrayNotHasKey('disabled', $application->all());
     }
 
+    public function testFindAlternativesDoesNotLoadSameNamespaceCommandsOnExactMatch()
+    {
+        $application = new Application();
+        $application->setAutoExit(false);
+
+        $loaded = [];
+
+        $application->setCommandLoader(new FactoryCommandLoader([
+            'foo:bar' => function () use (&$loaded) {
+                $loaded['foo:bar'] = true;
+
+                return (new Command('foo:bar'))->setCode(function () {});
+            },
+            'foo' => function () use (&$loaded) {
+                $loaded['foo'] = true;
+
+                return (new Command('foo'))->setCode(function () {});
+            },
+        ]));
+
+        $application->run(new ArrayInput(['command' => 'foo']), new NullOutput());
+
+        $this->assertSame(['foo' => true], $loaded);
+    }
+
     protected function getDispatcher($skipCommand = false)
     {
         $dispatcher = new EventDispatcher();