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<?php echo "<script>"; echo json_encode('"</script><script>alert("XSS");</script>"', JSON_UNESCAPE_SLASH); echo "</script>";
Output for git.master, git.master_jit, rfc.property-hooks
<script> Fatal error: Uncaught Error: Undefined constant "JSON_UNESCAPE_SLASH" in /in/TKmg6:5 Stack trace: #0 {main} thrown in /in/TKmg6 on line 5
Process exited with code 255.

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