Function: eshell-rewrite-for-command

eshell-rewrite-for-command is a byte-compiled function defined in esh-cmd.el.gz.

Signature

(eshell-rewrite-for-command TERMS)

Documentation

Rewrite a for command into its equivalent Eshell command form.

Because the implementation of for relies upon conditional evaluation of its argument (i.e., use of a Lisp special form), it must be implemented via rewriting, rather than as a function.

Source Code

;; Defined in /usr/src/emacs/lisp/eshell/esh-cmd.el.gz
(defun eshell-rewrite-for-command (terms)
  "Rewrite a `for' command into its equivalent Eshell command form.
Because the implementation of `for' relies upon conditional evaluation
of its argument (i.e., use of a Lisp special form), it must be
implemented via rewriting, rather than as a function."
  (if (and (equal (car terms) "for")
	   (equal (nth 2 terms) "in"))
      (let ((iter-symbol (intern (nth 1 terms)))
            (body (car (last terms))))
	(setcdr (last terms 2) nil)
        `(let ((eshell--local-vars (cons ',iter-symbol eshell--local-vars)))
           (iter-do (,iter-symbol (eshell-for-iterate
                                   ,@(mapcar #'eshell-term-as-value
                                             (nthcdr 3 terms))))
             ,body)))))