\ a very simple accept approach
\ Copyright (C) 1995,1996,1997,1998,1999 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.
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\ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
: accept ( adr len -- len )
over + over ( start end pnt )
key dup #del = IF drop #bs THEN
dup bl u<
IF dup #cr = over #lf = or IF space drop nip swap - EXIT THEN
#bs = IF 3 pick over <>
IF 1 chars - #bs emit bl emit #bs emit ELSE bell THEN THEN
ELSE >r 2dup <> IF r> dup emit over c! char+ ELSE r> drop bell THEN