bug#65348: INITIAL-INPUT in completing-read repeats same entry twice consecutively

[Juri Linkov]

> In case you're thinking, for your "obvious" use
> cases, of a case where you have few completion
> candidates, such as just "alpha", "beta", "gamma",
> then let's not forget that you can already cycle
> among those now, as completion candidates, without
> having them added to the future history.  That's
> available since Stefan added candidate cycling,
> AFAIK.

Your answers are too short.  Please elaborate
what do you mean by "candidate cycling" and
what keys do you press to cycle candidates?
Then maybe this cycling could be used instead of 'M-n'.