@error{} (error-->): Indicating an Error Message

A piece of code may cause an error when you evaluate it. You can designate the error message with the @error{} command.

Thus,

     @lisp
     (+ 23 'x)
     @error{} Wrong type argument: integer-or-marker-p, x
     @end lisp
     

produces

     (+ 23 'x)
     error--> Wrong type argument: integer-or-marker-p, x
     

This indicates that the following error message is printed when you evaluate the expression:

     Wrong type argument: integer-or-marker-p, x
     

error--> itself is not part of the error message.