在错误的地方也加上markdown转义

web/admin/problem_list.php

@@ -63,20 +63,6 @@ if(isset($_GET['keyword']) && $_GET['keyword']!=""){
 </form>
 </center>
 
-<?php
-/*
-echo "<select class='input-mini' onchange=\"location.href='problem_list.php?page='+this.value;\">";
-for ($i=1;$i<=$cnt;$i++){
-        if ($i>1) echo '&nbsp;';
-        if ($i==$page) echo "<option value='$i' selected>";
-        else  echo "<option value='$i'>";
-        echo $i+9;
-        echo "**</option>";
-}
-echo "</select>";
-*/
-?>
-
 <center>
 <table width=100% border=1 style="text-align:center;">
   <form id='pform' method=post action=contest_add.php >

web/template/syzoj/reinfo.php

@@ -30,13 +30,32 @@
     margin-bottom: -10px !important;
 }
 </style>
+<?php
+    function trans_md($str)
+    {
+      $s = $str;
+      $s = bbcode_to_html($s);
+      if (
+        strpos($s, "class='md") === false &&
+        strpos($s, "class=\"md") === false
+      )  // 没找到，那就加上
+        $s = "<span class='md'>" . $s . "</span>";
+      // 删除代码块里的<br />防止引起混乱
+      $s = preg_replace_callback('/(```.*?```|`[^`]*`)/s', function ($matches) {
+        return str_replace('<br />', '', $matches[0]);
+      }, $s);
+      // 特殊转义
+      $s = str_replace("<br />", "\n", $s);
+      return $s;
+    }
+    ?>
 <div class="padding">
     <div style="margin-top: 0px; margin-bottom: 14px; " v-if="content != null && content !== ''">
     <p class="transition visible">
            <strong ><?php echo "$MSG_ERROR_INFO";?> </strong>
         </p>
         <div class="ui existing segment">
-          <pre v-if="escape" style="margin-top: 0; margin-bottom: 0; " id="errtxt"><?php echo $view_reinfo?></pre>
+          <pre v-if="escape" style="margin-top: 0; margin-bottom: 0; " id="errtxt"><?php echo trans_md($view_reinfo)?></pre>
         </div>
     </div>