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VE: ensure absence of ctrl chars before insertion point
Previously, inserting at a position that had null chars before it would result in a block that wouldn't properly display with LIST.
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5
blk.fs
5
blk.fs
@ -681,9 +681,12 @@ CREATE FBUF 64 ALLOT0
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DUP BEGIN C@+ 0x20 < UNTIL -^ 1- ;
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: _rbufsz ( size of linebuf to the right of curpos )
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EDPOS @ 64 MOD 63 -^ ;
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: _lnfix ( --, ensure no ctl chars in line before EDPOS )
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EDPOS @ DUP 0xffc0 AND 2DUP = IF 2DROP EXIT THEN DO
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I _cpos DUP C@ 0x20 < IF 0x20 SWAP C! ELSE DROP THEN LOOP ;
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: _i ( i without _pln and _type. used in VE )
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_rbufsz IBUF _blen 2DUP > IF
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TUCK - ( ilen chars-to-move )
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_lnfix TUCK - ( ilen chars-to-move )
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SWAP EDPOS @ _cpos 2DUP + ( ctm ilen a a+ilen )
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3 PICK MOVE- ( ctm ilen ) NIP ( ilen )
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ELSE DROP 1+ ( ilen becomes rbuffsize+1 ) THEN
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