md支持任务列表

var/Utils/HyperDown.php

@@ -1449,9 +1449,24 @@ class HyperDown
         $rows = [];
         $suffix = '';
         $last = 0;
-
         foreach ($lines as $key => $line) {
             if (preg_match("/^(\s{" . $space . "})((?:[0-9]+\.?)|\-|\+|\*)(\s+)(.*)$/i", $line, $matches)) {
+                // 检测任务列表语法 [ ] 或 [x]
+                $content = $matches[4];
+                $isTask = false;
+                $checked = false;
+                
+                if (substr($content, 0, 4) === '[ ] ') {
+                    $isTask = true;
+                    $checked = ($taskMatches === 'x');
+                    $content = substr($content, 4);
+                }else if (substr($content, 0, 4) === '[x] ' || substr($content, 0, 4) === '[X] '){
+                    $isTask = true;
+                    $checked = true;
+                    $content = substr($content, 4);
+                }
+                
+                
                 if ($type == 'ol' && $key == 0) {
                     $olStart = intval($matches[2]);
 
@@ -1459,19 +1474,27 @@ class HyperDown
                         $suffix = ' start="' . $olStart . '"';
                     }
                 }
-
-                $rows[] = [$matches[4]];
+                $rows[] = [
+                    'content' => "$content",
+                    'isTask' => $isTask,
+                    'checked' => $checked
+               ];
                 $last = count($rows) - 1;
             } else {
-                $rows[$last][] = preg_replace("/^\s{" . ($tab + $space) . "}/", '', $line);
+                $rows[$last]['content'] .="\n" . preg_replace("/^\s{" . ($tab + $space) . "}/", '', $line);
             }
         }
-
         foreach ($rows as $row) {
-            $html .= "<li>" . $this->parse(implode("\n", $row), true, $start) . "</li>";
-            $start += count($row);
+            $parsedContent = $this->parse(implode("\n", [$row['content']]), true, $start);
+            if ($row['isTask']) {
+                $checkedAttr = $row['checked'] ? ' checked' : '';
+                $html .= "<li><input type=\"checkbox\" onclick='this.checked=!this.checked' {$checkedAttr}> {$parsedContent}</li>";
+            } else {
+                $html .= "<li>{$parsedContent}</li>";
+            }
+        
+            $start += count([$row['content']]);
         }
-
         return "<{$type}{$suffix}>{$html}</{$type}>";
     }