completions-at-point-functions

[david-jennings]

I've got a fairly simple eglot installation that works for jumping to code references. I've just tried symbol completion and it seems not to be using the LSP. I looked at the setting of completion-of-point-functions and it's set to (tags-completion-at-point-function). I was expecting to see it set to eglot-completion-at-point. Am I missing something?

[joaotavora]

Am I missing something?

Yes, you probably are and your expectation is correct. You should post the contents of your .emacs or at least the parts related to Eglot. If it's very big to post here, you can bisect it looking for the culprit .

In my Python buffers, for example, I see:

completion-at-point-functions is a variable defined in `minibuffer.el'.

Its value is
(eglot-completion-at-point python-completion-at-point t)

[david-jennings]

I think I have at least part of the answer. I just tried removing flycheck from .emacs (I'd been using that before I tried eglot) and that seems to have enabled both eglot-rename (which also wasn't working previously) and a more sensible completion-at-point.

Although if I look at completion-at-point-functions I still see:

completion-at-point-functions’s value is
(tags-completion-at-point-function)

This is the relevant part of my .emacs:

(when (locate-library "eglot")
  (add-hook 'python-mode-hook 'eglot-ensure)
  (add-hook 'c++-mode-hook 'eglot-ensure)
  (setq eglot-ignored-server-capabilites ; sic
	'(:documentHighlightProvider :hoverProvider))
  (add-hook 'eglot--managed-mode-hook (lambda() (flymake-mode -1)))
  )

Seems I previously tried to disable flymake-mode on a buffer-by-buffer basis.

[joaotavora]

(setq eglot-ignored-server-capabilites ; sic

Ugh! Why did no-one tell me?? 🤦 Anyway thanks for spotting the typo 2 years down the line or sth.

[david-jennings]

Now that I look at eglot.el I see that it's using flymake itself, so my trying to disable it (for some reason) is probably wrong. I'll remove that and check again.

[joaotavora]

Yes, to your actual problem. I would start with a empty .emacs, or at least with an .emacs void of Flymake, Flycheck, Lsp, company etc stuff. Comment that out than re-add it slowly.

[david-jennings]

Yep. I think I messed it up by also loading flycheck and/or flymake.

Am I correct in assuming that eglot takes over the functionality of those two modules (using flymake behind the scenes)?

[joaotavora]

Yes, you are. M-x eglot is a "manage it all for you"