gash/gash/built-ins/echo.scm

35 lines
1.0 KiB
Scheme

;;; Gash -- Guile As SHell
;;; Copyright © 2018 Timothy Sample <samplet@ngyro.com>
;;;
;;; This file is part of Gash.
;;;
;;; Gash is free software: you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License as published by
;;; the Free Software Foundation, either version 3 of the License, or
;;; (at your option) any later version.
;;;
;;; Gash is distributed in the hope that it will be useful,
;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with Gash. If not, see <http://www.gnu.org/licenses/>.
(define-module (gash built-ins echo)
#:export (echo))
;;; Commentary:
;;;
;;; The 'echo' utility.
;;;
;;; Code:
(define (echo . args)
(let* ((n? (and (pair? args) (string=? (car args) "-n")))
(args (if n? (cdr args) args)))
(display (string-join args " "))
(unless n?
(newline))
0))