Prompt can now be set before linereader is created

lib/Shell.php

@@ -19,6 +19,8 @@ class Shell
     
     protected $timers = [];
 
+    protected $prompt = ">";
+
     public function __construct()
     {
         $this->configure();
@@ -162,10 +164,11 @@ class Shell
 
     public function setPrompt($text)
     {
-        if (!$this->lineReader) {
-            return;
+        $this->prompt = $text;
+    
+        if ($this->lineReader) {
+            $this->lineReader->setPromptText($text);
         }
-        $this->lineReader->setPromptText($text);
     }
 
     /**
@@ -314,7 +317,7 @@ class Shell
     {
         $this->lineReader = new LineRead();
 
-        $this->lineReader->setPromptText("shell>");
+        $this->lineReader->setPromptText($this->prompt);
         $this->lineReader->setPromptStyle(new Style(Style::BR_GREEN));
         $this->lineReader->setCommandStyle(new Style(Style::GREEN));