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- ( handle backspace: go back one char in IN>, if possible, then
- emit SPC + BS )
- : (inbs)
- ( already at IN( ? )
- IN> @ IN( = IF EXIT THEN
- IN> @ 1- IN> !
- SPC BS
- ;
-
-
-
-
-
-
- ( cont.: read one char into input buffer and returns whether we
- should continue, that is, whether CR was not met. )
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