16 lines
477 B
Plaintext
16 lines
477 B
Plaintext
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: _ilen ( length of str in IBUF )
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IBUF BEGIN C@+ EOL? UNTIL IBUF - 1- ;
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: I
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IBUF _type EDPOS @ 64 /MOD ( cno lno )
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1+ 64 * _cpos ( cno next-line-ptr )
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SWAP 63 -^ _ilen ( nlp nb-of-chars-to-move ilen )
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2DUP > IF
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SWAP OVER - 1+ ( nlp ilen nbc ) 0 DO ( a ilen )
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SWAP 1- 2DUP -^ ( ilen a-1 a-ilen-1 ) C@ OVER C!
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SWAP ( a ilen )
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LOOP
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ELSE DROP ( ilen becomes nbc )
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THEN
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SWAP DROP IBUF EDPOS @ _cpos ROT MOVE
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;
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