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;;;;;
;;;;; $Id$
;;;;; Copyright (C) 1991  Lysator Academic Computer Association.
;;;;;
;;;;; This file is part of the LysKOM server.
;;;;; 
;;;;; LysKOM 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 1, or (at your option) 
;;;;; any later version.
;;;;; 
;;;;; LysKOM 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 LysKOM; see the file COPYING.  If not, write to
;;;;; Lysator, c/o ISY, Linkoping University, S-581 83 Linkoping, SWEDEN,
;;;;; or the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, 
;;;;; MA 02139, USA.
;;;;;
;;;;; Please mail bug reports to bug-lyskom@lysator.liu.se. 
;;;;;
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;;;; ================================================================
;;;; ================================================================
;;;;
;;;; File: commands1.el
;;;;
;;;; This file contains the code for some of the high level commands.
;;;;


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(setq lyskom-clientversion-long 
      (concat lyskom-clientversion-long
	      "$Id$\n"))


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;;; ================================================================
;;;                  F} uppmuntran - Get appreciation 

;;; Author: Inge Wallin


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(def-kom-command kom-get-appreciation ()
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  "Give the user a little light in the dark"
  (interactive)
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  (lyskom-insert-string 'appreciation))
  
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;;; ================================================================
;;;                      F} Sk{ll - Get abuse

;;; Author: Inge Wallin


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(def-kom-command kom-get-abuse ()
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  "Give the user a little verbal abuse."
  (interactive)
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  (lyskom-insert-string 'abuse))
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;;; ================================================================
;;;            Utpl}na - Delete a person or a conference

;;; Author: Inge Wallin


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(def-kom-command kom-delete-conf ()
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  "Delete a person or a conference."
  (interactive)
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  (let ((conf-stat 
	 (lyskom-read-conf-stat (lyskom-get-string 'what-conf-to-delete)
				'all)))
    (if conf-stat
	(if (lyskom-ja-or-nej-p
	     (lyskom-format 'confirm-delete-pers-or-conf
			    (if (conf-type->letterbox (conf-stat->conf-type 
						       conf-stat))
				(lyskom-get-string 'the-pers)
			      (lyskom-get-string 'the-conf))
			    (conf-stat->name conf-stat)))
	    (if (blocking-do 'delete-conf
			     (conf-stat->conf-no conf-stat))
		(lyskom-format-insert 'conf-is-deleted
				      (conf-stat->name conf-stat))
	      (lyskom-format-insert 'you-could-not-delete
				    conf-stat))
	  (lyskom-insert-string 'deletion-not-confirmed))
      (lyskom-insert-string 'somebody-else-deleted-that-conf))))
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;;; ================================================================
;;;                Radera (text) - Delete a text

;;; Author: Inge Wallin


(defun kom-delete-text (text-no-arg)
  "Delete a text. Argument: TEXT-NO"
  (interactive "P")
  (lyskom-start-of-command 'kom-delete-text)
  (let ((text-no (cond ((null text-no-arg) 0)
		       ((integerp text-no-arg) text-no-arg)
		       ((listp text-no-arg) (car text-no-arg))
		       (t 0))))
    (if (equal text-no 0)
	(setq text-no 
	      (lyskom-read-number (lyskom-get-string 'what-text-to-delete)
				  lyskom-current-text)))
    (lyskom-format-insert 'deleting-text text-no)
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    (lyskom-handle-command-answer (blocking-do 'delete-text text-no))))
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;;; ================================================================
;;;        ]terse presentation - Review the presentation
;;;               for a person or a conference

;;; Author: Inge Wallin


(defun kom-review-presentation ()
  "Review the presentation for a person or a conference."
  (interactive)
  (lyskom-start-of-command 'kom-review-presentation)
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  (let ((end-of-command-taken-care-of))
    (unwind-protect
	(let ((conf-stat (lyskom-read-conf-stat 
			  (lyskom-get-string 'presentation-for-whom)
			  'all)))
	  (if (null conf-stat)
	      (lyskom-insert-string 'somebody-deleted-that-conf)
	    (lyskom-format-insert 'review-presentation-of
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				  conf-stat)
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	    (if (/= (conf-stat->presentation conf-stat) 0)
		(lyskom-view-text (conf-stat->presentation conf-stat))
	      (lyskom-format-insert 'has-no-presentation
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				    conf-stat))))
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      (if end-of-command-taken-care-of
	  nil
	(lyskom-end-of-command)))))

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;;; ================================================================
;;;          ]terse det kommenterade - View commented text

;;; Author: Inge Wallin
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;;; Modified by: David K}gedal
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(def-kom-command kom-view-commented-text ()
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  "View the commented text.
If the current text is comment to (footnote to) several text then the first
text is shown and a REVIEW list is built to shown the other ones."
  (interactive)
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  (if lyskom-current-text
      (progn
	(lyskom-tell-internat 'kom-tell-read)
	(lyskom-view-commented-text
	 (blocking-do 'get-text-stat lyskom-current-text)))
    (lyskom-insert-string 'have-to-read)))
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(defun lyskom-view-commented-text (text-stat)
  "Handles the return from the initiate-get-text-stat, displays and builds list."
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  (let* ((misc-info-list (and text-stat
			      (text-stat->misc-info-list text-stat)))
	 (misc-infos (and misc-info-list
			  (append (lyskom-misc-infos-from-list
				   'COMM-TO misc-info-list)
				  (lyskom-misc-infos-from-list
				   'FOOTN-TO misc-info-list))))
	 (text-nos (and misc-infos
			(mapcar
			 (function
			  (lambda (misc-info)
			    (if (equal (misc-info->type misc-info)
				       'COMM-TO)
				(misc-info->comm-to misc-info)
			      (misc-info->footn-to misc-info))))
			 misc-infos))))
    (if text-nos
	(progn
	  (lyskom-format-insert 'review-text-no 
				(car text-nos))
	  (if (cdr text-nos)
	      (read-list-enter-read-info
	       (lyskom-create-read-info
		'REVIEW nil (lyskom-get-current-priority)
		(lyskom-create-text-list (cdr text-nos))
		lyskom-current-text)
	       lyskom-reading-list t))
	  (lyskom-view-text (car text-nos)))
      (lyskom-insert-string 'no-comment-to))))
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(defun lyskom-misc-infos-from-list (type list)
  "Get all the misc-infos from the misc-info-list LIST with the same type
as TYPE. If no such misc-info, return NIL"
  (cond ((null list) nil)
	((equal type (misc-info->type (car list))) 
	 (cons (car list)
	       (lyskom-misc-infos-from-list type (cdr list))))
	(t (lyskom-misc-infos-from-list type (cdr list)))))


;;; ================================================================
;;;                         Brev - Send letter

;;; Author: Inge Wallin
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;;; Rewritten using read-conf-no by Linus Tolke (4=>1)
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(defun kom-send-letter ()
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  "Send a personal letter to a person or a conference."
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  (interactive)
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  (condition-case error
      (progn
	(lyskom-start-of-command 'kom-send-letter)
	(lyskom-tell-internat 'kom-tell-write-letter)
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	(let* ((tono (lyskom-read-conf-no (lyskom-get-string 'who-letter-to)
					  'all))
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	       (conf-stat (blocking-do 'get-conf-stat tono)))
	  (if (if (zerop (conf-stat->msg-of-day conf-stat))
		  t
		(progn
		  (recenter 0)
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		  (lyskom-format-insert 'has-motd 
					conf-stat)
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		  (lyskom-view-text (conf-stat->msg-of-day conf-stat))
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		  (if (lyskom-j-or-n-p (lyskom-get-string 'motd-persist-q))
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		      t
		    (lyskom-end-of-command)
		    nil)))
	      (if (= tono lyskom-pers-no)
		  (lyskom-edit-text lyskom-proc
				    (lyskom-create-misc-list 'recpt tono)
				    "" "")
		(lyskom-edit-text lyskom-proc
				  (lyskom-create-misc-list 'recpt tono
							   'recpt lyskom-pers-no)
				  "" "")))))
    (quit (lyskom-end-of-command)
	  (signal 'quit "Quitting in letter"))))
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;;; ================================================================
;;;           Bli medlem i m|te - Become a member of a conference
;;;             Addera medlem - Add somebody else as a member

;;; Author: ???
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;;; Rewritten by: David K}gedal
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;; Add another person

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(def-kom-command kom-add-member ()
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  "Add a person as a member of a conference.
Ask for the name of the person, the conference to add him/her to."
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  (interactive)
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  (let* ((who (lyskom-read-conf-stat (lyskom-get-string 'who-to-add)
				     'pers))
	 (whereto (lyskom-read-conf-stat (lyskom-get-string 'where-to-add)
					 'all))
	 (pers-stat (blocking-do 'get-pers-stat (conf-stat->conf-no who))))
    (lyskom-add-member-answer (lyskom-try-add-member whereto who pers-stat)
			      whereto who)))
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;; Add self

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(def-kom-command kom-add-self ()
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  "Add this person as a member of a conference."
  (interactive)
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  (let ((whereto (lyskom-read-conf-stat 
		  (lyskom-get-string 'where-to-add-self)
		  'all))
	(who (blocking-do 'get-conf-stat lyskom-pers-no))
	(pers-stat (blocking-do 'get-pers-stat lyskom-pers-no)))
    (lyskom-add-member-answer (lyskom-try-add-member whereto who pers-stat)
			      whereto who)))
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;;; NOTE: This function is also called from lyskom-go-to-conf-handler
;;;       and from lyskom-create-conf-handler.

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(defun lyskom-add-member-by-no (conf-no pers-no &optional thendo &rest data)
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  "Fetch info to be able to add a person to a conf.
Get the conf-stat CONF-NO for the conference and the conf-stat and pers-stat 
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for person PERS-NO and send them into lyskom-try-add-member."
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  ;; This could be optimized with David Byers multi-hack.
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  (let ((result (lyskom-try-add-member (blocking-do 'get-conf-stat conf-no)
				       (blocking-do 'get-conf-stat pers-no)
				       (blocking-do 'get-pers-stat pers-no))))
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    (if thendo
	(apply thendo data))
    result))
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(defun lyskom-try-add-member (conf-conf-stat pers-conf-stat pers-stat)
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  "Add a member to a conference.
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Args: CONF-CONF-STAT PERS-CONF-STAT PERS-STAT
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CONF-CONF-STAT: the conf-stat of the conference the person is being added to
PERS-CONF-STAT: the conf-stat of the person being added.
PERS-STAT: the pers-stat of the person being added.
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Returns t if it was possible, otherwise nil."
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  (if (or (null conf-conf-stat)
	  (null pers-conf-stat))
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      nil				; We have some problem here.
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    (let ((priority
	   (if (/= lyskom-pers-no (conf-stat->conf-no pers-conf-stat))
	       100			; When adding someone else
	     (if (and (numberp kom-membership-default-priority)
		      (< kom-membership-default-priority 256)
		      (>= kom-membership-default-priority 0))
		 kom-membership-default-priority
	       (lyskom-read-num-range
		0 255 (lyskom-get-string 'priority-q)))))
	  (where
	   (if (/= lyskom-pers-no (conf-stat->conf-no pers-conf-stat))
	       1			; When adding someone else
	     (cond
	      ((and (numberp kom-membership-default-placement)
		    (>= kom-membership-default-placement 0))
	       kom-membership-default-placement)
	      ((eq kom-membership-default-placement 'first)
	       0)
	      ((eq kom-membership-default-placement 'last)
	       (length lyskom-membership))
	      (t
	       (lyskom-read-num-range
		0 (pers-stat->no-of-confs pers-stat)
		(lyskom-format 'where-on-list-q
			       (length lyskom-membership))))))))

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      (if (= (conf-stat->conf-no pers-conf-stat)
	     lyskom-pers-no)
	  (lyskom-format-insert 'member-in-conf
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				conf-conf-stat)
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	(lyskom-format-insert 'add-member-in
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			      pers-conf-stat
			      conf-conf-stat))
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      (blocking-do 'add-member 
		   (conf-stat->conf-no conf-conf-stat)
		   (conf-stat->conf-no pers-conf-stat)
		   priority where))))
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(defun lyskom-add-member-answer (answer conf-conf-stat pers-conf-stat)
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  "Handle the result from an attempt to add a member to a conference."
  (if (null answer)
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      (progn
	(lyskom-insert-string 'nope)
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	(if (conf-type->rd_prot (conf-stat->conf-type conf-conf-stat))
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	    ;; The conference is protected. Tell the user to contact
	    (let ((supervisorconf (blocking-do
				   'get-conf-stat
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				   (conf-stat->supervisor conf-conf-stat))))
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	      (if supervisorconf
		  (lyskom-format-insert 'is-read-protected-contact-supervisor
					conf-conf-stat
					supervisorconf)
		(lyskom-format-insert 'cant-find-supervisor
				      conf-conf-stat)))
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	  (lyskom-format-insert 'error-code
				(lyskom-get-error-text lyskom-errno)
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				lyskom-errno)))
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    (lyskom-insert-string 'done)
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    ;;+++Borde {ndra i cachen i st{llet.
    (cache-del-pers-stat (conf-stat->conf-no pers-conf-stat))
    ;;+++Borde {ndra i cachen i st{llet.
    (cache-del-conf-stat (conf-stat->conf-no conf-conf-stat))
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    (if (= (conf-stat->conf-no pers-conf-stat)
	   lyskom-pers-no)
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	(progn				; Adding myself
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	  ;;(setq lyskom-last-conf-received
	  ;;      (1+ lyskom-last-conf-received))
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	  (lyskom-add-membership
	   (blocking-do 'query-read-texts
			lyskom-pers-no 
			(conf-stat->conf-no conf-conf-stat))
	   conf-conf-stat)))))
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(defun lyskom-add-membership (membership conf-stat)
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  "Adds MEMBERSHIP to the sorted list of memberships.
Args: MEMBERSHIP CONF-STAT THENDO DATA
Also adds to lyskom-to-do-list."
  (if membership
      (progn
	(setq lyskom-membership (sort (cons membership lyskom-membership)
				      'lyskom-membership-<))
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	(let ((map (blocking-do
		    'get-map
		    (conf-stat->conf-no conf-stat)
		    (max (1+ (membership->last-text-read membership))
			 (conf-stat->first-local-no conf-stat))
		    (conf-stat->no-of-texts conf-stat))))
	  (if map
	      (let ((texts (skip-first-zeros
			    (sort (append (map->text-nos map) nil)
				  '<))))
		(if texts
		    (read-list-enter-read-info
		     (lyskom-create-read-info
		      'CONF conf-stat
		      (membership->priority membership)
		      (lyskom-create-text-list
		       texts)
		      nil nil)
		     lyskom-to-do-list))))	  
	  ))
    (lyskom-insert-string 'conf-does-not-exist))
  )
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;;; ================================================================
;;;     Uttr{d - Subtract yourself as a member from a conference
;;;     Uteslut medlem - Subtract somebody else as a member

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;;; Author: David Byers
;;; Based on code by Inge Wallin
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;; Subtract another person

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(def-kom-command kom-sub-member ()
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  "Subtract a person as a member from a conference. Ask for the name
of the person."
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  (interactive)
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  (lyskom-sub-member
   (lyskom-read-conf-stat (lyskom-get-string 'who-to-exclude) 'pers nil "")
   (lyskom-read-conf-stat (lyskom-get-string 'where-from-exclude) 
			  'all nil "")))
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(def-kom-command kom-sub-self ()
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  "Subtract this person as a member from a conference."
  (interactive)
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  (lyskom-sub-member 
   (blocking-do 'get-conf-stat lyskom-pers-no)
   (lyskom-read-conf-stat (lyskom-get-string 'leave-what-conf)
			  'all nil 
			  (let ((ccn 
				 (if (or (zerop lyskom-current-conf))
				     ""
				   (conf-stat->name
				    (blocking-do 'get-conf-stat
						 lyskom-current-conf)))))
			    (if ccn
				(cons ccn 0)
			      "")))))
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(defun lyskom-sub-member (pers conf)
  "Remove the person indicated by PERS as a member of CONF."
  (let ((reply nil)
	(self (= (conf-stat->conf-no pers) lyskom-pers-no)))
    (cond ((null pers) (lyskom-insert-string 'error-fetching-person))
	  ((null conf) (lyskom-insert-string 'error-fetching-conf))
	  (t
	   (if self
	       (lyskom-format-insert 'unsubscribe-to conf)
	     (lyskom-format-insert 'exclude-from pers conf))

	   (setq reply (blocking-do 'sub-member
				    (conf-stat->conf-no conf)
				    (conf-stat->conf-no pers)))
	   (if self
	       (lyskom-set-membership (blocking-do 'get-membership
						   lyskom-pers-no)))
	   (if (not reply)
	       (lyskom-format-insert 'unsubscribe-failed
				     (if self
					 (lyskom-get-string 'You)
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				       (conf-stat->name pers))
				     (conf-stat->name conf))
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	     (lyskom-insert-string 'done)
	     (if (and self
		      (= (conf-stat->conf-no conf)
			 lyskom-current-conf))
		 (progn 
		   (set-read-list-empty lyskom-reading-list)
		   (setq lyskom-current-conf 0)))
	     (if self
		 (setq lyskom-last-conf-received 
		       (1- lyskom-last-conf-received)))
	     (read-list-delete-read-info (conf-stat->conf-no conf)
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					 lyskom-to-do-list))))))
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;;; ================================================================
;;;                 Skapa m|te - Create a conference

;;; Author: ???


(defun kom-create-conf (conf-name)
  "Create a conference."
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  (interactive (list (lyskom-read-string (lyskom-get-string 'name-of-conf))))
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  (let* ((open (j-or-n-p (lyskom-get-string 'anyone-member)))
	 (secret (if (not open)
		     (j-or-n-p (lyskom-get-string 'secret-conf))))
	 (orig (j-or-n-p (lyskom-get-string 'comments-allowed))))
    (lyskom-start-of-command 'kom-create-conf)
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    (unwind-protect
	(lyskom-create-conf-handler
	 (blocking-do 'create-conf 
		      conf-name
		      (lyskom-create-conf-type (not open) 
					       (not orig)
					       secret
					       nil))
	 conf-name)
      (lyskom-end-of-command))))
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(defun lyskom-create-conf-handler (conf-no conf-name)
  "Deal with the answer from an attempt to create a conference.
Add the person creating and execute lyskom-end-of-command."
  (if (null conf-no)
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      (lyskom-format-insert 'could-not-create-conf
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			    conf-name
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			    lyskom-errno)
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    (progn
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      (let ((conf-stat (blocking-do 'get-conf-stat conf-no)))
	(lyskom-format-insert 'created-conf-no-name 
			      (or conf-stat conf-no)
			      (or conf-stat conf-name)
			      (if conf-stat
				  (lyskom-default-button 'conf conf-stat)
				nil)))
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      (lyskom-scroll)
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      (lyskom-add-member-by-no conf-no lyskom-pers-no
			       'lyskom-create-conf-handler-2
			       conf-no conf-name))))
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(defun lyskom-create-conf-handler-2 (conf-no conf-name)
  "Starts editing a presentation for the newly created conference.
This does lyskom-end-of-command"
  (lyskom-tell-internat 'kom-tell-conf-pres)
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  (lyskom-dispatch-edit-text lyskom-proc
			     (lyskom-create-misc-list
			      'recpt
			      (server-info->conf-pres-conf lyskom-server-info))
			     conf-name ""
			     'lyskom-set-presentation conf-no))
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(defun lyskom-set-presentation (text-no conf-no)
  "Set presentation of a conference. Args: text-no conf-no."
  (initiate-set-presentation 'background nil conf-no text-no)
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  (cache-del-conf-stat conf-no))	;+++Borde {ndra i cachen i st{llet.
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					;+++ Kan tas bort n{r det existerar 
					;asynkrona meddelanden som talar om att
					;n}got {r {ndrat.
    

(defun lyskom-set-conf-motd (text-no conf-no)
  "Set motd of a conference. Args: text-no conf-no."
  (initiate-set-conf-motd 'background nil conf-no text-no)
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  (cache-del-conf-stat conf-no))	;+++Borde {ndra i cachen i st{llet.
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					;+++ Kan tas bort n{r det existerar 
					;asynkrona meddelanden som talar om att
					;n}got {r {ndrat.
    

;;; ================================================================
;;;                  Kommentera - write comment

;;; Author: ???


(defun kom-write-comment (&optional text-no)
  "Write a comment to a text.
If optional arg TEXT-NO is present write a comment to that text instead."
  (interactive (list 
		(cond
		 ((null current-prefix-arg)
		  lyskom-current-text)
		 ((integerp current-prefix-arg)
		  current-prefix-arg)
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		 ((listp current-prefix-arg) 
		  (lyskom-read-number (lyskom-get-string 'what-comment-no)))
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		 (t
		  (signal 'lyskom-internal-error '(kom-write-comment))))))
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  (lyskom-start-of-command (concat 
			    (car (cdr (assoc 'kom-write-comment
					     lyskom-commands)))
			    (if text-no 
				(format " (%d)" text-no)
			      "")))
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  (if text-no
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      (lyskom-write-comment-soon
       (blocking-do 'get-text-stat text-no)
       (blocking-do 'get-text text-no)
       text-no
       'comment)
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    (lyskom-insert-string 'confusion-what-to-comment)
    (lyskom-end-of-command)))


(defun kom-write-footnote (&optional text-no)
  "Write a footnote to a text.
If optional arg TEXT-NO is present write a footnote to that text instead."
  (interactive (list 
		(cond
		 ((null current-prefix-arg)
		  lyskom-current-text)
		 ((integerp current-prefix-arg)
		  current-prefix-arg)
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		 ((listp current-prefix-arg) 
		  (lyskom-read-number (lyskom-get-string 'what-comment-no)))
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		 (t
		  (signal 'lyskom-internal-error '(kom-write-comment))))))
  (lyskom-start-of-command 'kom-write-footnote)
  (if text-no
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      (lyskom-write-comment-soon
       (blocking-do 'get-text-stat text-no)
       (blocking-do 'get-text text-no)
       text-no 'footnote)
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    (lyskom-insert-string 'confusion-what-to-footnote)
    (lyskom-end-of-command)))


(defun kom-comment-previous ()
  "Write a comment to previously viewed text."
  (interactive)
  (lyskom-start-of-command 'kom-comment-previous)
  (if lyskom-previous-text
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      (lyskom-write-comment-soon 
       (blocking-do 'get-text-stat lyskom-previous-text)
       (blocking-do 'get-text lyskom-previous-text)
       lyskom-previous-text 'comment)
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    (lyskom-insert-string 'confusion-what-to-comment)
    (lyskom-end-of-command)))


(defun lyskom-write-comment-soon (text-stat text text-no type)
  "Write a comment to the text with TEXT-STAT, TEXT and, TEXT-NO.
TYPE is either 'comment or 'footnote."
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  (cond
   ;; Text not found?
   ((or (null text-stat)
	(null text))
    (lyskom-format-insert 'cant-read-textno text-no)
    (lyskom-end-of-command))
   ;; Give header.
   ((string-match "\n" (text->text-mass text))
    (lyskom-write-comment text-stat
			  (substring (text->text-mass text)
				     0 (match-beginning 0))
			  type))
   ;; The commented text had no header.
   (t (lyskom-write-comment text-stat "" type))))
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(defun lyskom-write-comment (text-stat subject type)
  "Write a comment to the text associated with TEXT-STAT.
The default subject is SUBJECT. TYPE is either 'comment or 'footnote."
  (if (null text-stat)
      (progn
	(lyskom-insert-string 'confusion-what-to-comment)
	(lyskom-end-of-command))
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    (let ((ccrep))
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      (lyskom-tell-internat (if (eq type 'comment)
				'kom-tell-write-comment
			      'kom-tell-write-footnote))
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      (let (data)
	(mapcar 
	 (function
	  (lambda (misc-info)
	    (cond
	     ((eq 'RECPT (misc-info->type misc-info))
	      (setq data 
		    (cons (blocking-do 'get-conf-stat 
				       (misc-info->recipient-no misc-info))
			  data)))
	     ((and (eq type 'footnote)
		   (eq 'CC-RECPT (misc-info->type misc-info)))
	      (setq ccrep (cons (misc-info->recipient-no misc-info) 
				ccrep))
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	      (setq data (cons (blocking-do 'get-conf-stat
					    (misc-info->recipient-no misc-info))
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			       data))))))
	 (text-stat->misc-info-list text-stat))
	(lyskom-comment-recipients data lyskom-proc text-stat
				   subject type ccrep)))))
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(defun lyskom-comment-recipients (data lyskom-proc text-stat
				       subject type ccrep)
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  "Compute recipients to a comment to a text.
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Args: DATA, LYSKOM-PROC TEXT-STAT SUBJECT TYPE CCREP.
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DATA is a list of all the recipients that should receive this text.
If DATA contains more than one conference the user is asked (using y-or-n-p)
if all conferences really should receive the text.
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The call is continued to the lyskom-edit-text.
TYPE is info whether this is going to be a comment of footnote.
CCREP is a list of all recipients that are going to be cc-recipients."
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  (condition-case x
      ;; Catch any quits and run lyskom-end-of-command.
      (progn
	;; Filter multiple recipients through y-or-n-p.
	(if (and kom-confirm-multiple-recipients (> (length data) 1)
		 (not (and (= (length data) 2)
			   (or (= lyskom-pers-no (conf-stat->conf-no
						  (car data)))
			       (= lyskom-pers-no (conf-stat->conf-no
						  (car (cdr data))))))))
	    (let ((new-data nil))
	      (while data
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		(if (lyskom-j-or-n-p (lyskom-format 'comment-keep-recpt-p
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					     (conf-stat->name (car data))))
		    (setq new-data (cons (car data) new-data)))
		(setq data (cdr data)))
	      (setq data (nreverse new-data))))	    

	(let* ((member nil)
	       (recver (lyskom-create-misc-list
			(cond 
			 ((eq type 'comment) 'comm-to)
			 ((eq type 'footnote) 'footn-to)
			 (t (signal 'lyskom-internal-error
				    (list "Unknown comment type" type))))
			(text-stat->text-no text-stat)))
	       (recpts nil))
	  (while data
	    (let ((conf-stat (car data)))
	      (if (memq (conf-stat->comm-conf conf-stat) recpts)
		  nil
		(setq recver
		      (append recver
			      (list
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			       (cons (if (memq (conf-stat->conf-no conf-stat)
					       ccrep)
					 'cc-recpt
				       'recpt)
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				     (conf-stat->comm-conf conf-stat)))))
		(if (lyskom-member-p (conf-stat->conf-no conf-stat))
		    (setq member t))
		(setq recpts (cons (conf-stat->comm-conf conf-stat) recpts))))
	    (setq data (cdr data)))
	  ;; Add the user to the list of recipients if he isn't a member in
	  ;; any of the recipients.
	  (if (not member)
	      (setq recver (append recver
				   (list (cons 'recpt lyskom-pers-no)))))
	  (lyskom-edit-text lyskom-proc 
			    recver
			    subject "")))

    (quit (lyskom-end-of-command)
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	  (signal 'quit "quit in lyskom-comment-recipients"))))
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;;; ================================================================
;;;                Personligt svar - personal answer

;;; Author: ???
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;;; Rewritten using blocking-do by: Linus Tolke
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(defun kom-private-answer (&optional text-no)
  "Write a private answer to the current text.
If optional arg TEXT-NO is present write a private answer to
that text instead."
  (interactive (list
		(cond
		 ((null current-prefix-arg)
		  lyskom-current-text)
		 ((integerp current-prefix-arg)
		  current-prefix-arg)
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		 ((listp current-prefix-arg) 
		  (lyskom-read-number (lyskom-get-string 'what-private-no)))
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		 (t
		  (signal 'lyskom-internal-error '(kom-private-answer))))))
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  (lyskom-start-of-command 'kom-private-answer)
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  (if text-no
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      (lyskom-private-answer-soon
       (blocking-do 'get-text-stat text-no)
       (blocking-do 'get-text text-no)
       text-no)
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    (lyskom-insert-string 'confusion-who-to-reply-to)
    (lyskom-end-of-command)))


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(defun lyskom-private-answer-soon (text-stat text text-no)
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  "Write a private answer to TEXT-STAT, TEXT."
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  (if (and text-stat text)
      (if (string-match "\n" (text->text-mass text))
	  (lyskom-private-answer text-stat
				 (substring (text->text-mass text)
					    0 (match-beginning 0)))
	(lyskom-private-answer text-stat ""))
    (lyskom-format-insert 'no-such-text-no text-no)
    (lyskom-end-of-command)))
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(defun lyskom-private-answer (text-stat subject)
  "Write a private answer. Args: TEXT-STAT SUBJECT."
  (if (null text-stat)
      (progn
	(lyskom-insert-string 'confusion-what-to-answer-to)
	(lyskom-end-of-command))
    (progn
      (lyskom-tell-internat 'kom-tell-write-reply)
      (lyskom-edit-text lyskom-proc
			(lyskom-create-misc-list
			 'comm-to (text-stat->text-no text-stat)
			 'recpt (text-stat->author text-stat)
			 'recpt lyskom-pers-no)
			subject ""))))


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;;; ================================================================
;;;    Personligt svar p} f|reg}ende - kom-private-answer-previous

;;; Author: ceder
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;;; Rewritten using blocking-do by: Linus Tolke
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(defun kom-private-answer-previous ()
  "Write a private answer to previously viewed text."
  (interactive)
  (lyskom-start-of-command 'kom-private-answer-previous)
  (if lyskom-previous-text
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      (lyskom-private-answer-soon-prev
       (blocking-do 'get-text-stat lyskom-previous-text)
       (blocking-do 'get-text lyskom-previous-text))
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    (lyskom-insert-string 'confusion-who-to-reply-to)
    (lyskom-end-of-command)))

(defun lyskom-private-answer-soon-prev (text-stat text)
  "Write a private answer to TEXT-STAT, TEXT."
  (if (string-match "\n" (text->text-mass text))
      (lyskom-private-answer text-stat
			     (substring (text->text-mass text)
					0 (match-beginning 0)))
    (lyskom-private-answer text-stat "")))


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;;; ================================================================
;;;                         Sluta - quit

;;; Author: ???


(defun kom-quit (&optional arg)
  "Quit session. Kill process and buffer-local variables.
If optional argument is non-nil then dont ask for confirmation."
  (interactive "P")
  (lyskom-start-of-command 'kom-quit t)
  (cond
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   ((and (lyskom-count-down-edits)
	 (display-buffer (car lyskom-list-of-edit-buffers))
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	 (not (lyskom-ja-or-nej-p
	       (lyskom-get-string 'quit-in-spite-of-unsent))))
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    (lyskom-end-of-command))
   ((or arg
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	(lyskom-ja-or-nej-p (lyskom-get-string 'really-quit))
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	)
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    (initiate-logout 'main nil)
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    (setq lyskom-sessions-with-unread
	  (delq lyskom-proc lyskom-sessions-with-unread))
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    (setq lyskom-sessions-with-unread
	  (delq lyskom-proc lyskom-sessions-with-unread-letters))
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    (set-process-sentinel lyskom-proc nil)
    (delete-process lyskom-proc)
    (setq lyskom-proc)
    (lyskom-clear-vars)
    (lyskom-insert-string 'session-ended)
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    (lyskom-scroll)
    (run-hooks 'kom-quit-hook))
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   (t (lyskom-end-of-command))))

  

;;; ================================================================
;;;     	[ndra presentation - Change presentation 
;;;	         S{tta lapp p} d|rren - Change conf-motd

;;; Author: Inge Wallin
;;; Changed by Linus Tolke


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(def-kom-command kom-change-presentation ()
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  "Change presentation for a person or a conference."
  (interactive)
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  (lyskom-change-pres-or-motd-2
   (let ((no (lyskom-read-conf-no 
	      (lyskom-get-string 'what-to-change-pres-you)
	      'all t)))
     (if (zerop no)
	 (setq no lyskom-pers-no))
     (blocking-do 'get-conf-stat no))
   'pres))
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(def-kom-command kom-change-conf-motd ()
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  "Change motd for a person or a conference."
  (interactive)
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  (lyskom-change-pres-or-motd-2
   (let ((no (lyskom-read-conf-no (lyskom-get-string 'who-to-put-motd-for)
				  'all t)))
     (if (zerop no)
	 (setq no lyskom-pers-no))
     (blocking-do 'get-conf-stat no))
   'motd))
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(defun lyskom-change-pres-or-motd-2 (conf-stat type)
  "Change the presentation or motd of CONF-STAT.
TYPE is either 'pres or 'motd, depending on what should be changed."
  (cond
   ((null conf-stat)			;+++ annan felhantering
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    (lyskom-insert-string 'cant-get-conf-stat))
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   ((or lyskom-is-administrator
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	(lyskom-member-p (conf-stat->supervisor conf-stat))
	(= lyskom-pers-no (conf-stat->conf-no conf-stat)))
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    (lyskom-dispatch-edit-text
     lyskom-proc
     (lyskom-create-misc-list 'recpt
			      (cond
			       ((eq type 'motd)
				(server-info->motd-conf lyskom-server-info))
			       ((eq type 'pres)
				(if (conf-type->letterbox
				     (conf-stat->conf-type conf-stat))
				    (server-info->pers-pres-conf 
				     lyskom-server-info)
				  (server-info->conf-pres-conf
				   lyskom-server-info)))))
     (conf-stat->name conf-stat)
     (let ((text-mass (blocking-do 'get-text 
				   (cond
				    ((eq type 'pres)
				     (conf-stat->presentation conf-stat))
				    ((eq type 'motd)
				     (conf-stat->msg-of-day conf-stat))))))
       (if (and text-mass
		(string-match "\n" (text->text-mass text-mass)))
	   (substring (text->text-mass text-mass) (match-end 0))
	 (if (and (eq type 'pres)
		  (conf-type->letterbox (conf-stat->conf-type conf-stat)))
	     (lyskom-get-string 'presentation-form)
	   "")))
     (cond
      ((eq type 'pres) 'lyskom-set-presentation)
      ((eq type 'motd) 'lyskom-set-conf-motd))
     (conf-stat->conf-no conf-stat)))
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   (t
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    (lyskom-format-insert 'not-supervisor-for
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			  conf-stat))))
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;;; ================================================================
;;;           Ta bort lapp p} d|rren - delete conf-motd

;;; Author: Linus Tolke (& Inge Wallin)


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(def-kom-command kom-unset-conf-motd ()
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  "Removes motd for a person or a conference."
  (interactive)
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  (let ((conf-stat (or (lyskom-read-conf-stat
			(lyskom-get-string 'who-to-remove-motd-for)
			'all 'empty)
		       (blocking-do 'get-conf-stat lyskom-pers-no))))
    (cond
     ((null conf-stat)
      (lyskom-insert-string 'cant-get-conf-stat))
     ((or lyskom-is-administrator
	  (lyskom-member-p (conf-stat->supervisor conf-stat)))
      ;; This works like a dispatch. No error handling.
      (lyskom-set-conf-motd 0 (conf-stat->conf-no conf-stat)))
     (t
      (lyskom-format-insert 'not-supervisor-for
			    conf-stat)))))
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;;; ================================================================
;;;               G} till M|te - Go to a conference.

;;; Author: ???

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(def-kom-command kom-go-to-conf ()
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  "Select a certain conference.
The user is prompted for the name of the conference.
If s/he was already reading a conference that conference will be put
back on lyskom-to-do-list."
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