Is there any way to get the head syntax object？

[Syntacticlosure]

The head syntax object is useful when writing unhygienic macros, otherwise, I can only find outside scopes from anywhere else.
It seems impossible to get the head syntax object now.

[mflatt]

You can declare ~op_stx to get the head term:

#lang rhombus/and_meta

namespace ns:
  export hello
  expr.macro 'hello':
    ~op_stx self
    println("called as " +& self)
    '#void'

import .ns.hello as howdy

howdy

prints "called as howdy"

[Syntacticlosure]

thank u.