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Minor fixes for SHARC
KEY returns now EOF (-1) when at end of file (non-standard?)

\ Input                                                13feb93py

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\ This file is part of Gforth.

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\ as published by the Free Software Foundation; either version 2
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: (ins) ( max span addr pos1 key -- max span addr pos2 )
    >r 2dup + r@ swap c! r> emit 1+ rot 1+ -rot ;
: (bs) ( max span addr pos1 -- max span addr pos2 flag )
    dup IF
	#bs emit bl emit #bs emit 1- rot 1- -rot
    THEN false ;
: (ret)  true bl emit ;

Create ctrlkeys
  ] false false false false  false false false false
    (bs)  false (ret) false  false (ret) false false
    false false false false  false false false false
    false false false false  false false false false [

defer insert-char
' (ins) IS insert-char
defer everychar
' noop IS everychar

: decode ( max span addr pos1 key -- max span addr pos2 flag )
  everychar
  dup #del = IF  drop #bs  THEN  \ del is rubout
  dup bl u<  IF  cells ctrlkeys + perform  EXIT  THEN
  >r 2over = IF  rdrop bell 0 EXIT  THEN
  r> insert-char 0 ;

: accept   ( addr len -- len ) \ core
  dup 0< IF    abs over dup 1 chars - c@ tuck type 
\ this allows to edit given strings
  ELSE  0  THEN rot over
  BEGIN  key decode  UNTIL
  2drop nip ;