some modify for input definition

Author: inhere

docs/input-output.md

@@ -0,0 +1,39 @@
+# input and output
+
+## input
+
+## output
+
+### output buffer
+
+how tu use
+
+- use `Output`
+
+```php
+    // open buffer
+    $this->output->startBuffer();
+    
+    $this->output->write('message 0');
+    $this->output->write('message 1');
+    // ....
+    $this->output->write('message n');
+    
+    // stop and output buffer
+    $this->output->stopBuffer();
+```
+
+- use `Show`
+
+```php
+    // open buffer
+    Show::startBuffer();
+    
+    Show::write('message 0');
+    Show::write('message 1');
+    // ....
+    Show::write('message n');
+    
+    // stop and output buffer
+    Show::stopBuffer();
+```

src/Base/AbstractCommand.php

@@ -186,7 +186,13 @@ protected function showHelp()
         // 创建了 InputDefinition , 则使用它的信息。
         // 不会再解析和使用命令的注释。
         if ($def = $this->getDefinition()) {
-            $this->output->mList($def->getSynopsis());
+            $cmd = $this->input->getCommand();
+            $spt = $this->input->getScript();
+
+            $info = $def->getSynopsis();
+            $info['usage'] = "$spt $cmd ". $info['usage'];
+
+            $this->output->mList($info);
 
             return true;
         }

src/IO/InputDefinition.php

@@ -419,7 +419,7 @@ public function getSynopsis($short = false)
                     );
                 }
 
-                $shortcut = $option['shortcut'] ? sprintf('-%s|', $option['shortcut']) : '';
+                $shortcut = $option['shortcut'] ? sprintf('-%s, ', $option['shortcut']) : '';
                 $elements[] = sprintf('[%s--%s%s]', $shortcut, $name, $value);
 
                 $key = "{$shortcut}--{$name}";
@@ -449,7 +449,7 @@ public function getSynopsis($short = false)
             $args[$name] = $des;
         }
 
-        $opts['-h|--help'] = 'Show help information for the command';
+        $opts['-h, --help'] = 'Show help information for the command';
 
         return [
             'description' => $this->description,