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collapseos/blk/111
Virgil Dupras 7cad9ffe40 LIST: simplify logic
There wasn't much of a reason to leave a loop early on 0x0d or null.
The idea was that once you have a CR or null, the rest is garbage
and you shouldn't see it.

However, it brought a problem: In VE, you couldn't insert characters
past that limit. It would be written, but never displayed. So let's
get rid of this logic and simply always display a 64x16 grid.
2020-06-10 19:00:03 -04:00

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: _blen ( buf -- length of str in buf )
DUP BEGIN C@+ 0x20 < UNTIL -^ 1- ;
: _rbufsz ( size of linebuf to the right of curpos )
EDPOS @ 64 MOD 63 -^ ;
: i COMPILE I ; IMMEDIATE ( save overshadowed )
: _I ( I without _pln and _type. used in VE )
_rbufsz IBUF _blen 2DUP > IF
TUCK - ( ilen chars-to-move )
SWAP EDPOS @ _cpos 2DUP + ( ctm ilen a a+ilen )
3 PICK MOVE- ( ctm ilen )
NIP ( ilen )
ELSE DROP ( ilen becomes rbuffsize )
THEN
DUP IBUF EDPOS @ _cpos ROT MOVE ( ilen ) EDPOS +! BLK!! ;
: I IBUF _type _I EDPOS @ 64 / _pln ;