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VE: ensure absence of ctrl chars before insertion point

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Previously, inserting at a position that had null chars before it
would result in a block that wouldn't properly display with LIST.
This commit is contained in:
Virgil Dupras 2020-12-24 12:18:53 -05:00
parent 7d29c12c25
commit 6f4f870dd4
1 changed files with 4 additions and 1 deletions
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5
blk.fs
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@ -681,9 +681,12 @@ CREATE FBUF 64 ALLOT0
DUP BEGIN C@+ 0x20 < UNTIL -^ 1- ;
: _rbufsz ( size of linebuf to the right of curpos )
EDPOS @ 64 MOD 63 -^ ;
: _lnfix ( --, ensure no ctl chars in line before EDPOS )
EDPOS @ DUP 0xffc0 AND 2DUP = IF 2DROP EXIT THEN DO
I _cpos DUP C@ 0x20 < IF 0x20 SWAP C! ELSE DROP THEN LOOP ;
: _i ( i without _pln and _type. used in VE )
_rbufsz IBUF _blen 2DUP > IF
TUCK - ( ilen chars-to-move )
_lnfix TUCK - ( ilen chars-to-move )
SWAP EDPOS @ _cpos 2DUP + ( ctm ilen a a+ilen )
3 PICK MOVE- ( ctm ilen ) NIP ( ilen )
ELSE DROP 1+ ( ilen becomes rbuffsize+1 ) THEN