Re: Navigating completions from minibuffer

[Juri Linkov]

> Maybe we can deselect by moving point to just before (or after) the
> selected candidate?  Move point to the whitespace in-between candidates.
> Then no candidate is selected, and completions-highlight-face won't
> highlight any candidate, but there's still a bit of visual indicator
> (window-point) which shows what candidate was previously selected, and
> if the user does want to re-select the candidate, the user can just hit
> <down> (or <up>) to select the candidate again.

In fact, the whitespace in-between candidates is the only place where
point could be moved to deselect the candidate.  Because there is no space
at the end of the completions buffer, and even at the beginning when
both completion-show-help and completions-header-format are nil.