1: \ a very simple accept approach
3: \ Copyright (C) 1995,1996,1997,1998,1999 Free Software Foundation, Inc.
5: \ This file is part of Gforth.
7: \ Gforth is free software; you can redistribute it and/or
8: \ modify it under the terms of the GNU General Public License
9: \ as published by the Free Software Foundation; either version 2
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15: \ GNU General Public License for more details.
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21: require ./io.fs
23: : accept ( adr len -- len )
24: over + over ( start end pnt )
26: key dup #del = IF drop #bs THEN
27: dup bl u<
28: IF dup #cr = over #lf = or IF space drop nip swap - EXIT THEN
29: #bs = IF 3 pick over <>
30: IF 1 chars - #bs emit bl emit #bs emit ELSE bell THEN THEN
31: ELSE >r 2dup <> IF r> dup emit over c! char+ ELSE r> drop bell THEN
33: AGAIN ;