bug#68214: Completion sorting customization by category

[Juri Linkov <juri@linkov.net>]

close 68214 30.0.50
thanks

>>> Now I tried to use a more user-friendly let-binding of
>>> 'completion-extra-properties' like below, but then discovered
>>> that it doesn't work for the category.
>>>
>>> Maybe 'completion-metadata-get' could try to get a category
>>> from 'completion-extra-properties' as well?
>>
>> Sorry, this was imprecise.  I meant another layer of indirection:
>> to get a category from 'completion-extra-properties'
>> to be able to get 'display-sort-function' by category.
>
> Indeed. I forgot about this indirection. This should be added as well.
> Not sure if there a significantly easier way to write this than as
> follows with a separate helper function?

I think other ways such as calling the same function recursively 
would be too ugly.  But a separate function is more clear.

> (defun completion--metadata-get-1 (metadata prop)
>   (or (alist-get prop metadata)
>       (plist-get completion-extra-properties
>                  ;; Cache the keyword
>                  (or (get prop 'completion-extra-properties--keyword)
>                      (put prop 'completion-extra-properties--keyword
>                           (intern (concat ":" (symbol-name prop))))))))
>
> (defun completion-metadata-get (metadata prop)

Now this is pushed as well.

Since all existing metadata functions are completely covered now,
it's time to close this feature request.

Thank you for helping to bring this nice feature to fruition!