;;; -*- Mode: Common-Lisp; Package: SYS; Base: 10.; Patch-File: T -*-

;;; Reason: Modified  DELETE-PACKAGE to handle unknown packages. [8864]

;;;                           RESTRICTED RIGHTS LEGEND
;;;
;;; Use, duplication, or disclosure by the Government is subject to
;;; restrictions as set forth in subdivision (c)(1)(ii) of the Rights in
;;; Technical Data and Computer Software clause at 52.227-7013.
;;;
;;;   TEXAS INSTRUMENTS INCORPORATED      
;;;   P.O. BOX 2909, M/S 2151             
;;;   AUSTIN, TEXAS 78769                 
;;;
;;; Copyright (C) 1989 Texas Instruments Incorporated.
;;; All rights reserved.

;;; Patch file for SYSTEM version 6.38
;;; Written 06/08/90 12:35:42 by BERGER,
;;; while running on ARIES from band LODX
;;; With SYSTEM 6.36, VIRTUAL-MEMORY 6.3, EH 6.8, MAKE-SYSTEM 6.3, MICRONET 6.0, LOCAL-FILE 6.2,
;;;  BASIC-PATHNAME 6.5, NETWORK-SUPPORT-COLD 6.2, BASIC-NAMESPACE 6.8, NETWORK-NAMESPACE 6.1,
;;;  DISK-IO 6.3, DISK-LABEL 6.0, BASIC-FILE 6.13, MAC-PATHNAME 6.0, NETWORK-PATHNAME 6.2,
;;;  COMPILER 6.18, TV 6.26, DATALINK 6.0, CHAOSNET 6.8, GC 6.4, MEMORY-AUX 6.0, NVRAM 6.3,
;;;  SYSLOG 6.2, STREAMER-TAPE 6.6, UCL 6.0, INPUT-EDITOR 6.0, METER 6.2, ZWEI 6.21,
;;;  DEBUG-TOOLS 6.4, NETWORK-SUPPORT 6.1, NETWORK-SERVICE 6.3, DATALINK-DISPLAYS 6.0,
;;;  FONT-EDITOR 6.1, SERIAL 6.0, PRINTER 6.7, MAC-PRINTER-TYPES 6.2, PRINTER-TYPES 6.2,
;;;  IMAGEN 6.1, SUGGESTIONS 6.1, MAIL-DAEMON 6.6, MAIL-READER 6.8, TELNET 6.1, VT100 6.0,
;;;  NAMESPACE-EDITOR 6.5, PROFILE 6.3, VISIDOC 6.7, TI-CLOS 6.50, CLEH 6.5, IP 3.65,
;;;  Experimental CLX 6.11, CLUE 6.104, X11M 6.26, Experimental BUG 11.19, VISIDOC-SERVER 6.2,
;;;   microcode 483, Band Name: 6.1-A 5-31 +P6/4

#!C
; From file PACKAGES.LISP#> KERNEL; sys:
#10R SYSTEM#:
(COMPILER-LET ((*PACKAGE* (FIND-PACKAGE "SYSTEM"))
                          (SI:*LISP-MODE* :COMMON-LISP)
                          (*READTABLE* COMMON-LISP-READTABLE)
                          (SI:*READER-SYMBOL-SUBSTITUTIONS* *COMMON-LISP-SYMBOL-SUBSTITUTIONS*))
  (COMPILER#:PATCH-SOURCE-FILE "SYS: KERNEL; PACKAGES.#"


(Defun DELETE-PACKAGE(pkg)
  "Kills a package object and uninterns all symbols present in the package.
It is illegal to delete a package when it is used by another so one must remove
such dependencies before proceeding."

  (LET* ((pkg (pkg-FIND-PACKAGE pkg))  ; DAB 06-08-90 handle unknown packages
	 (used-by-list (PACKAGE-USED-BY-LIST pkg)))
    (WHEN used-by-list
      (ERROR t "~s cannot be deleted since it is used by ~s~%" pkg used-by-list))
    (SETF (PACK-SHADOWING-SYMBOLS pkg) nil)  ;; prevent UNINTERN from looking for name conflicts
    (DO-LOCAL-SYMBOLS (var pkg) (UNINTERN var pkg))
    (KILL-PACKAGE pkg)))
))