Fix in CompletionWindow>>complete
Fixed completion in cases where completed text does not start with
typed text. i.e, original source is `1 fa` but completing `1 exponent`.
@REM -------
@REM make using lcc compiler
@REM type lccmake, and wait...
@REM do not edit - automatically generated from ProjectDefinition
@REM -------
make.exe -N -f bc.mak -DUSELCC=1 %*