[plt-scheme] #lang at-exp scheme/base doesn't work?

From: ccwu (ccwu660601 at gmail.com)
Date: Sun Oct 11 03:36:12 EDT 2009


I'm learning scheme and scribble using plt-scheme 4.2.2.
I tried the following code:

  #lang at-exp scheme/base

  (define (greet who) @string-append{Hello, @|who|.})

But drscheme give me an error:
  unquote: not in quasiquote in: (unquote @who.)

Any idea?

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