enhance: option name rule sort is not required

Author: inhere

src/AbstractFlags.php

@@ -705,11 +705,18 @@ protected function parseRuleOptName(string $key): array
             // support like '--name, -n'
             $k = ltrim($k, '-');
 
-            if ($i === 0) {
+            // long string as option name.
+            if (!$name && strlen($k) > 1) {
                 $name = $k;
-            } else {
-                $shorts[] = $k;
+                continue;
             }
+
+            $shorts[] = $k;
+        }
+
+        // no long name, first short name as option name.
+        if (!$name) {
+            $name = array_shift($shorts);
         }
 
         return [$name, $shorts];

test/SFlagsTest.php

@@ -47,13 +47,16 @@ public function testParseDefined(): void
         // int
         $flags = ['-n', 'inhere', '--age', '99'];
         $fs->parseDefined($flags, [
-            'name, n' => FlagType::STRING, // add an alias
-            'age'     => FlagType::INT,
+            // 'name,n' => FlagType::STRING, // add an alias
+            'n,name' => FlagType::STRING, // add an alias
+            'age'    => FlagType::INT,
         ]);
         // vdump($fs);
         $this->assertSame('inhere', $fs->getOption('name'));
         $this->assertSame(99, $fs->getOption('age'));
         $this->assertCount(0, $fs->getRawArgs());
+        $this->assertTrue($fs->hasAlias('n'));
+        $this->assertSame('name', $fs->resolveAlias('n'));
 
         $fs->reset();
         $this->assertFalse($fs->isParsed());