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(guile.info.gz) Emacs Lisp Support

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 34.1 Emacs Lisp Support
 =======================
 
  -- Scheme Procedure: nil-car x
  -- C Function: scm_nil_car (x)
      Return the car of X, but convert it to LISP nil if it is Scheme's
      end-of-list.
 
  -- Scheme Procedure: nil-cdr x
  -- C Function: scm_nil_cdr (x)
      Return the cdr of X, but convert it to LISP nil if it is Scheme's
      end-of-list.
 
  -- Scheme Procedure: nil-cons x y
  -- C Function: scm_nil_cons (x, y)
      Create a new cons cell with X as the car and Y as the cdr, but
      convert Y to Scheme's end-of-list if it is a Lisp nil.
 
  -- Scheme Procedure: nil-eq x y
      Compare X and Y and return Lisp's t if they are `eq?', return
      Lisp's nil otherwise.
 
  -- Scheme Procedure: null x
  -- C Function: scm_null (x)
      Return Lisp's `t' if X is nil in the LISP sense, return Lisp's nil
      otherwise.
 
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