Fix "Using null as an array offset is deprecated" (PHP 8.5+)

Author: thekid

.github/workflows/ci.yml

@@ -48,7 +48,7 @@ jobs:
 
     - name: Install dependencies
       run: >
-        curl -sSL https://baltocdn.com/xp-framework/xp-runners/distribution/downloads/e/entrypoint/xp-run-8.6.2.sh > xp-run &&
+        curl -sSL https://github.com/xp-runners/reference/releases/download/v9.2.0/xp-run-9.2.0.sh > xp-run &&
         composer install --prefer-dist &&
         echo "vendor/autoload.php" > composer.pth
 

ChangeLog.md

@@ -3,6 +3,12 @@ HandleBars change log
 
 ## ?.?.? / ????-??-??
 
+## 10.0.1 / 2025-09-06
+
+* Fixed *E_DEPRECATED: Using null as an array offset is deprecated, use
+  an empty string instead* (PHP 8.5+)
+  (@thekid)
+
 ## 10.0.0 / 2025-05-04
 
 * **Heads up:** Dropped support for PHP < 7.4, see xp-framework/rfc#343

src/main/php/com/handlebarsjs/HandlebarsParser.class.php

@@ -322,10 +322,8 @@ public function parse(Tokenizer $tokens, $start= '{{', $end= '}}', $indent= '')
         // Handle tag
         if (null === $tag) {
           continue;
-        } else if (isset($this->handlers[$tag[0]])) {
-          $f= $this->handlers[$tag[0]];
         } else {
-          $f= $this->handlers[null];
+          $f= $this->handlers[$tag[0]] ?? $this->handlers[''];
         }
         $offset+= $f($tag, $state, $this);
       } while ($offset < $length);