Fix for issue #6

examples/index.php

@@ -0,0 +1,23 @@
+<?php
+/**
+ * index.php
+ *
+ * @since       2011-05-23
+ * @category    Library
+ * @package     Unicode
+ * @author      Nicola Asuni <[email protected]>
+ * @copyright   2011-2023 Nicola Asuni - Tecnick.com LTD
+ * @license     http://www.gnu.org/copyleft/lesser.html GNU-LGPL v3 (see LICENSE.TXT)
+ * @link        https://github.com/tecnickcom/tc-lib-unicode
+ *
+ * This file is part of tc-lib-unicode software library.
+ */
+
+// NOTE: run make deps fonts in the project root to generate the dependencies and example fonts.
+
+// autoloader when using Composer
+require ('../vendor/autoload.php');
+
+use \Com\Tecnick\Unicode\Bidi as Bidi;
+
+echo (new Bidi('hello ', null, null, 'R', false))->getString()."\n";

src/Bidi/StepL.php

@@ -114,7 +114,7 @@ protected function processL1()
      */
     protected function processL1b($idx, $jdx)
     {
-        if ($jdx >= $this->numchars) {
+        if ($jdx >= ($this->numchars - 1)) {
             return;
         }
         if ((($this->chardata[$jdx]['otype'] == 'S') || ($this->chardata[$jdx]['otype'] == 'B'))

test/BidiTest.php

@@ -85,6 +85,16 @@ public static function bidiStrDataProvider()
                 json_decode('"\u202EABC\u202C"'),
                 'CBA'
             ),
+            array(
+                'left to right',
+                'right to left',
+                'R'
+            ),
+            array(
+                'left to right ',
+                ' right to left',
+                'R'
+            ),
             array(
                 json_decode('"smith (fabrikam \u0600\u0601\u0602) \u05de\u05d6\u05dc"'),
                 json_decode('"\u05dc\u05d6\u05de (\u0602\u0601\u0600 fabrikam) smith"'),