bug#16208: 24.3.50; `locate-file-completion-table' uses NAMES with duplicates

[Drew Adams]

> > I'd appreciate it if `locate-file-completion-table' were fixed
> > so that when `completion-all-completions' uses it, it did not
> > return duplicates.


> I don't see why we should take this change of yours into account.

This is the question: Why should `completion-all-completions' with
`locate-file-completion-table' return duplicate names?

You may say that whatever someone decides to do with the result
from `completion-all-completions' is not your concern.  But why?

Why not have it return all of the completions here, with no
duplicates, as is normally the case?