mirror of
https://github.com/forth-ev/VolksForth.git
synced 2024-11-29 05:49:26 +00:00
52 lines
3.1 KiB
Forth
52 lines
3.1 KiB
Forth
|
\ *** Block No. 0 Hexblock 0
|
||
|
|
\\ Undo for the VolksForth command line cas2013apr05
|
||
|
|
|
||
|
|
The tool extends the VolksForth "decode" function
|
||
|
|
with an UNDO. If there was a typo in the previous line
|
||
|
|
pressing the UNDO key will re-fetch the last entered line so
|
||
|
|
that it can be edited
|
||
|
|
|
||
|
|
Published in VD 3/87 by Bernd Pennemann
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
\ *** Block No. 1 Hexblock 1
|
||
|
|
\ Undo for Atari ST cas2013apr05
|
||
|
|
Onlyforth
|
||
|
|
|
||
|
|
| $6100 Constant #undo
|
||
|
|
|
||
|
|
: undoSTdecode ( addr pos1 key -- addr pos2 )
|
||
|
|
over 0= if
|
||
|
|
#undo case? if at? >r >r
|
||
|
|
over #tib @ dup span ! type
|
||
|
|
r> r> at exit then then
|
||
|
|
STdecode ;
|
||
|
|
|
||
|
|
Input: keyboard STkey STkey? undoSTdecode STexpect ;
|
||
|
|
|
||
|
|
keyboard save
|
||
|
|
|
||
|
|
\ *** Block No. 2 Hexblock 2
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
|