Version: (using KDE 3.5.8) Installed from: SuSE RPMs It would be very similar to word completion, but additionaly words would be obtained from dictionary. So as soon I type thi I would get a list of words (as suggestion) beginning with thi. Of course it should be optional because not always it is useful to see such list.
Related report:
*** This bug has been marked as a duplicate of bug 156855 ***