We previously implemented only consult/vertico as a target for export,
now we have all of them. It was necessary to use case-by-case
conditions, unfortunately, because other UIs have subtle quirks that
prevent a single generalized approach to work.
Ivy is almost compliant, but it needs beg and end to not be markers.
Helm doesn't replace `completion-in-region-function`, it expects to go
around the default `completion--in-region`. It's supposed to add the
advice by itself, but it's very unreliable, so we do the wrapping
manually.
Ido doesn't implement `completion-in-region` and its `completing-read`
is retricted to a list of strings as table, so we use default
`completion--in-region` with no bells or whistles.
This removes the old `&` separator for Vertico (does anyone use that
instead of just space?) in favor of escapable space and unifies
orderless config with Corfu. Also implements smart separator
insert/escape/reset on `C-SPC`
Co-authored-by: Liam Hupfer <liam@hpfr.net>
This commit's primary goal is allowing use of
[Corfu](https://github.com/minad/corfu) as an alternative to
[Company](https://github.com/company-mode/company-mode). It introduces a
module under `:completion` for this purpose, plus some conditionals on
other relevant modules to toggle functionality like lsp back-ends and
[Cape](https://github.com/minad/cape) capfs for certain modes.
Other optional or miscellaneous features include:
- Corfu is enabled in the minibuffer if `completion-at-point` is bound;
- Support for displaying the completion's documentation on a secondary
popup;
- Support for terminal display if :os tty;
- Support for icons if +icons;
