describle-function and describe-variables no longer use ido in emacs 25

[sollidsnake]

When using emacs 25 -- 25.1.50.1 to be more precise --, emacs falls back to the default completion method when invoking describe-function or describle-variable. For most other commands, like set-variable and non-builtin, ido completion keep working just fine.

[DarwinAwardWinner]

These functions were modified in 25.1, and I had to make some fixes in ido-ubiquitous for them to work. This should be fixed in version 3.14

[dgutov]

Note that in doing so, you're breaking the new feature: automatic loading of packages based on known variable/function name prefixes.

[DarwinAwardWinner]

So if I understand correctly from a quick look at the code, the new feature allows commands like describe-function to automatically load elisp files that are known to define functions that match a prefix entered by the user, in order to offer a more accurate set of completions, based on some pre-processing that builds a mapping from prefixes to filenames?

[dgutov]

Yes.

[cpitclaudel]

@DarwinAwardWinner Support for this new feature in ido would be brilliant.

[DarwinAwardWinner]

Ok, I guess in the short term I'll just have to remove the override, and people who value ido completion more than this new feature can add it back themselves. I'll open a new issue for investigating whether ido completion can support this feature. Thanks for bringing this to my attention.

[j-cr]

So how do I enable it? 20200520.1535, Emacs 26