Setf Extensions (Common Lisp Extensions)

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5.2.1 Setf Extensions ¶

Several standard (e.g., car) and Emacs-specific (e.g., window-point) Lisp functions are setf-able by default. This package defines setf handlers for several additional functions:

• Functions from this package:

  cl-rest cl-subseq cl-get cl-getf
  cl-caaar...cl-cddddr cl-first...cl-tenth
  

  Note that for cl-getf (as for nthcdr), the list argument of the function must itself be a valid place form.

• A macro call, in which case the macro is expanded and setf is applied to the resulting form.