Issue eileenmcnaughton#22 use a localTokens variable to prevent remov…

…al of tokens of other extensions

civitoken.php

@@ -119,27 +119,29 @@ function civitoken_civicrm_alterSettingsFolders(&$metaDataFolders = NULL) {
 }
 
 /**
-* implementation of CiviCRM hook
-*/
+ * implementation of CiviCRM hook
+ */
 function civitoken_civicrm_tokens(&$tokens) {
-  civitoken_civicrm_tokens_all($tokens);
+  $localTokens = array();
+  civitoken_civicrm_tokens_all($localTokens);
   $setting = civicrm_api3('Setting', 'get', ['return' => 'civitoken_enabled_tokens', 'sequential' => 1])['values'][0];
 
   if (empty($setting) || empty($setting['civitoken_enabled_tokens'])) {
     // Treat un-configured as 'all enabled'.
     return;
   }
 
-  foreach ($tokens as $category => $tokenSubset) {
+  foreach ($localTokens as $category => $tokenSubset) {
     foreach ($tokenSubset as $key => $token) {
       if (!in_array($key, $setting['civitoken_enabled_tokens'])) {
-        unset($tokens[$category][$key]);
+        unset($localTokens[$category][$key]);
       }
     }
-    if (empty($tokens[$category])) {
-      unset($tokens[$category]);
+    if (empty($localTokens[$category])) {
+      unset($localTokens[$category]);
     }
   }
+  $tokens = array_merge($tokens,$localTokens);
 }
 
 /**