Function: eshell-execute-pipeline

eshell-execute-pipeline is a macro defined in esh-cmd.el.gz.

Signature

(eshell-execute-pipeline PIPELINE)

Documentation

Execute the commands in PIPELINE, connecting each to one another.

Source Code

;; Defined in /usr/src/emacs/lisp/eshell/esh-cmd.el.gz
(defmacro eshell-execute-pipeline (pipeline)
  "Execute the commands in PIPELINE, connecting each to one another."
  `(let ((eshell-in-pipeline-p t)
         (headproc (make-symbol "headproc"))
         (tailproc (make-symbol "tailproc")))
     (set headproc nil)
     (set tailproc nil)
     (progn
       ,(if (fboundp 'make-process)
	    `(eshell-do-pipelines ,pipeline)
	  `(let ((tail-handles (eshell-create-handles
				(car (aref eshell-current-handles
					   ,eshell-output-handle)) nil
				(car (aref eshell-current-handles
					   ,eshell-error-handle)) nil)))
	     (eshell-do-pipelines-synchronously ,pipeline)))
       (eshell-process-identity (cons (symbol-value headproc)
                                      (symbol-value tailproc))))))