bug#47711: bug#48841: bug#47711: [PATCH VERSION 2] Add new `completion-filter-completions` API and deferred highlighting

[Daniel Mendler]

On 8/16/21 1:57 PM, Eli Zaretskii wrote:
> I was talking about the infrastructure that produces the completion
> candidates, not about the application that uses them.  My point is
> that your approach requires the applications using the candidates to
> copy them, whereas previously they could use them without copying.

Okay, I understand. Yes, in my patch the strings returned by
'completion-filter-completions' must not be mutated by the API consumer
directly. This should be documented clearly, but it is not unexpected.
For example the API 'all-completions' which one can use to obtain the
strings from a completion table also requires the caller to not mutate
the returned strings.

Daniel