collapseos/blk/128

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: $w EDPOS @ BLK( + acc@ 0 DO
BEGIN C@+ WS? UNTIL BEGIN C@+ WS? NOT UNTIL LOOP
1- BLK( - pos! ;
: $W EDPOS @ BLK( + acc@ 0 DO
1+ BEGIN C@+ WS? NOT UNTIL BEGIN C@+ WS? UNTIL LOOP
2- BLK( - pos! ;
: $b EDPOS @ BLK( + acc@ 0 DO
1- BEGIN C@- WS? NOT UNTIL BEGIN C@- WS? UNTIL LOOP
2+ BLK( - pos! ;
: $B EDPOS @ BLK( + acc@ 0 DO
BEGIN C@- WS? UNTIL BEGIN C@- WS? NOT UNTIL LOOP
1+ BLK( - pos! ;