symfony · chalasr · Aug 12, 2017 · Aug 11, 2017
diff --git a/src/Symfony/Component/Console/Application.php b/src/Symfony/Component/Console/Application.php
@@ -578,7 +578,12 @@ public function find($name)
        $expr = preg_replace_callback('{([^:]+|)}', function ($matches) { return preg_quote($matches[1]).'[^:]*'; }, $name);
        $commands = preg_grep('{^'.$expr.'}', $allCommands);

-        if (empty($commands) || count(preg_grep('{^'.$expr.'$}', $commands)) < 1) {
+        if (empty($commands)) {
+            $commands = preg_grep('{^'.$expr.'}i', $allCommands);
+        }
+
+        // if no commands matched or we just matched namespaces
+        if (empty($commands) || count(preg_grep('{^'.$expr.'$}i', $commands)) < 1) {
            if (false !== $pos = strrpos($name, ':')) {
                // check if a namespace exists and contains commands
                $this->findNamespace(substr($name, 0, $pos));

diff --git a/src/Symfony/Component/Console/CHANGELOG.md b/src/Symfony/Component/Console/CHANGELOG.md
@@ -6,6 +6,7 @@ CHANGELOG

 * added `CommandLoaderInterface`, `FactoryCommandLoader` and PSR-11
   `ContainerCommandLoader` for commands lazy-loading
+ * added a case-insensitive command name matching fallback

 3.3.0
 -----

diff --git a/src/Symfony/Component/Console/Tests/ApplicationTest.php b/src/Symfony/Component/Console/Tests/ApplicationTest.php
@@ -51,6 +51,8 @@ public static function setUpBeforeClass()
        require_once self::$fixturesPath.'/Foo3Command.php';
        require_once self::$fixturesPath.'/Foo4Command.php';
        require_once self::$fixturesPath.'/Foo5Command.php';
+        require_once self::$fixturesPath.'/FooSameCaseUppercaseCommand.php';
+        require_once self::$fixturesPath.'/FooSameCaseLowercaseCommand.php';
        require_once self::$fixturesPath.'/FoobarCommand.php';
        require_once self::$fixturesPath.'/BarBucCommand.php';
        require_once self::$fixturesPath.'/FooSubnamespaced1Command.php';
@@ -317,6 +319,41 @@ public function testFind()
        $this->assertInstanceOf('FooCommand', $application->find('a'), '->find() returns a command if the abbreviation exists for an alias');
    }

+    public function testFindCaseSensitiveFirst()
+    {
+        $application = new Application();
+        $application->add(new \FooSameCaseUppercaseCommand());
+        $application->add(new \FooSameCaseLowercaseCommand());
+
+        $this->assertInstanceOf('FooSameCaseUppercaseCommand', $application->find('f:B'), '->find() returns a command if the abbreviation is the correct case');
+        $this->assertInstanceOf('FooSameCaseUppercaseCommand', $application->find('f:BAR'), '->find() returns a command if the abbreviation is the correct case');
+        $this->assertInstanceOf('FooSameCaseLowercaseCommand', $application->find('f:b'), '->find() returns a command if the abbreviation is the correct case');
+        $this->assertInstanceOf('FooSameCaseLowercaseCommand', $application->find('f:bar'), '->find() returns a command if the abbreviation is the correct case');
+    }
+
+    public function testFindCaseInsensitiveAsFallback()
+    {
+        $application = new Application();
+        $application->add(new \FooSameCaseLowercaseCommand());
+
+        $this->assertInstanceOf('FooSameCaseLowercaseCommand', $application->find('f:b'), '->find() returns a command if the abbreviation is the correct case');
+        $this->assertInstanceOf('FooSameCaseLowercaseCommand', $application->find('f:B'), '->find() will fallback to case insensitivity');
+        $this->assertInstanceOf('FooSameCaseLowercaseCommand', $application->find('FoO:BaR'), '->find() will fallback to case insensitivity');
+    }
+
+    /**
+     * @expectedException        \Symfony\Component\Console\Exception\CommandNotFoundException
+     * @expectedExceptionMessage Command "FoO:BaR" is ambiguous
+     */
+    public function testFindCaseInsensitiveSuggestions()
+    {
+        $application = new Application();
+        $application->add(new \FooSameCaseLowercaseCommand());
+        $application->add(new \FooSameCaseUppercaseCommand());
+
+        $this->assertInstanceOf('FooSameCaseLowercaseCommand', $application->find('FoO:BaR'), '->find() will find two suggestions with case insensitivity');
+    }
+
    public function testFindWithCommandLoader()
    {
        $application = new Application();
@@ -414,8 +451,8 @@ public function testFindAlternativeExceptionMessageSingle($name)
    public function provideInvalidCommandNamesSingle()
    {
        return array(
-            array('foo3:baR'),
-            array('foO3:bar'),
+            array('foo3:barr'),
+            array('fooo3:bar'),
        );
    }


diff --git a/src/Symfony/Component/Console/Tests/Fixtures/FooSameCaseLowercaseCommand.php b/src/Symfony/Component/Console/Tests/Fixtures/FooSameCaseLowercaseCommand.php
@@ -0,0 +1,11 @@
+<?php
+
+use Symfony\Component\Console\Command\Command;
+
+class FooSameCaseLowercaseCommand extends Command
+{
+    protected function configure()
+    {
+        $this->setName('foo:bar')->setDescription('foo:bar command');
+    }
+}
diff --git a/src/Symfony/Component/Console/Tests/Fixtures/FooSameCaseUppercaseCommand.php b/src/Symfony/Component/Console/Tests/Fixtures/FooSameCaseUppercaseCommand.php
@@ -0,0 +1,11 @@
+<?php
+
+use Symfony\Component\Console\Command\Command;
+
+class FooSameCaseUppercaseCommand extends Command
+{
+    protected function configure()
+    {
+        $this->setName('foo:BAR')->setDescription('foo:BAR command');
+    }
+}