FR: Support omnifunc for the completion

[gh-liu]

Thanks for your amazing work!
Maybe this plugin could support omnifunc for the completion, which is a buffer local option be used for insert mode completion.

[olimorris]

Why do we need it after a1147f8?

[gh-liu]

IMHO, its the vim way to provide completion in the insert mode, if this awsome plugin support omnifunc:

• first, we do not have to map one another key to the completion
• second, it will compatible well with other completion plugins, cmp already support omnifunc by cmp-omni, and blink.cmp may support it in the future.

[olimorris]

If we're utilising native Neovim functions like vim.fn.complete() then that is the "Neovim way". We're not fighting the editor to add functionality.

I like the idea of your second point. However, it still requires users to add cmp-omni support, whereas the current implementation works ootb (albeit a user may have to change the mappings).