--- gforth/tasker.fs	1996/03/31 20:16:04	1.1
+++ gforth/tasker.fs	1997/05/21 20:39:42	1.4
@@ -1,5 +1,23 @@
 \ Multitasker                                          19aug94py
 
+\ Copyright (C) 1995-1997 Free Software Foundation, Inc.
+
+\ This file is part of Gforth.
+
+\ Gforth 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 2
+\ of the License, or (at your option) any later version.
+
+\ This program 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 this program; if not, write to the Free Software
+\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
 Create sleepers  sleepers A, sleepers A, 0 ,
 
 \ LINK-TASK links task1 into the task chain of task2
@@ -24,7 +42,9 @@ Create sleepers  sleepers A, sleepers A,
 
 \ USER' computes the task offset
 : user' ( 'user' -- n )
-  ' >body @ state @ IF  postpone Literal  THEN ; immediate
+    ' >body @ postpone literal ; immediate
+interpretation:
+    ' >body @ ;
 
 \ NEWTASK creates a new, sleeping task
 : NewTask ( n -- Task )  dup 2* 2* udp @ + dup
@@ -55,7 +75,10 @@ Create sleepers  sleepers A, sleepers A,
 : activate ( task -- )  0 swap (pass) ;
 : pass ( x1 .. xn n task -- )  (pass) ;
 
-: task-key   BEGIN  pause key?  UNTIL  (key) ;
+: single-tasking? ( -- flag )
+    next-task dup @ = ;
+
+: task-key   BEGIN  pause key? single-tasking? or  UNTIL  (key) ;
 : task-emit  (emit) pause ;
 : task-type  (type) pause ;