fix: invalid named argument string on parse flags

Author: inhere

src/ColorTag.php

@@ -23,10 +23,10 @@
 class ColorTag
 {
     // regex used for removing color tags
-    public const STRIP_TAG = '/<[\/]?[a-zA-Z=;]+>/';
+    public const STRIP_TAG = '/<[\/]?[a-zA-Z0-9=;]+>/';
 
     // Regex to match tags/
-    public const MATCH_TAG = '/<([a-zA-Z=;_]+)>(.*?)<\/\\1>/s';
+    public const MATCH_TAG = '/<([a-zA-Z0-9=;_]+)>(.*?)<\/\\1>/s';
 
     // color
     public const BLACK   = 'black';

src/Flags.php

@@ -299,6 +299,8 @@ public static function filterBool($val, $enable = true)
     }
 
     /**
+     * check next is option value
+     *
      * @param mixed $val
      *
      * @return bool
@@ -315,8 +317,22 @@ public static function nextIsValue($val): bool
             return true;
         }
 
-        // it isn't option or named argument
-        return $val[0] !== '-' && false === strpos($val, '=');
+        // is not option name.
+        if ($val[0] !== '-') {
+            // ensure is option value.
+            if (false === strpos($val, '=')) {
+                return true;
+            }
+
+            // is string value, but contains '='
+            [$name,] = explode('=', $val, 2);
+
+            // named argument OR invlaid: 'some = string'
+            return false === self::isValidArgName($name);
+        }
+
+        // is option name.
+        return false;
     }
 
     /**

src/Style.php

@@ -67,8 +67,9 @@ class Style
      * Regex to match tags
      *
      * @var string
+     * @deprecated please use ColorTag::MATCH_TAG
      */
-    public const COLOR_TAG = '/<([a-zA-Z=;]+)>(.*?)<\/\\1>/s';
+    public const COLOR_TAG = '/<([a-zA-Z0-9=;]+)>(.*?)<\/\\1>/s';
 
     /**
      * @var self