this post was submitted on 29 Nov 2023
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Does eglot support autocomplete candidates with the same name? (alien.top)
submitted 11 months ago by darkawower@alien.top to c/emacs
10 comments fedilink hide all child comments
 

Hi guys, sometimes I try something new to compare with already used packages, this weekend I wanted to try Eglot, however, I ran into a number of problems. One of them is autocomplete.

For example, when I write in vue, I want to autocomplete a watch function. This function is available in the following packages

import { watch } from 'vue';
import { watch } from 'fs';
import { watch } from 'fs/promises'
... etc

But when I use autocomplete in eglot I only see the first candidate - importing from the fs package. Is there any possibility or workaround to display all possible candidates?

Example of autocomplete with eglot

https://preview.redd.it/tlgtg5imw43c1.jpg?width=2930&format=pjpg&auto=webp&s=7f0cd2ff1b6733ec26021b77b6e5e392f26921df

Example of autocomplete with lsp-mode

https://preview.redd.it/rcntp2vow43c1.jpg?width=1224&format=pjpg&auto=webp&s=a246d790c47b4d48a3fba5e5f1cb361841eccc02

​

I also know that lsp-mode in conjunction with corfu has a similar problem, but it is impossible to solve it there as the authors of both packages think that the problem is not on their side 😅 Is the situation with eglot the same?

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[–] minad-emacs@alien.top 1 points 11 months ago (6 children)

/u/hvis Would you consider changing this, since this way of deduplication in the frontend is quite inefficient? Given that the default completion UI demands that candidates are unique with respect to equal and even deletes equal duplicates, the backend should better produce unique candidates.

Deduplicating in the backend is not difficult, all that is needed is adding a suffix like (1), (2), (3), ... In fact, this is what I am doing in my Consult package, which also is a backend and provides completion tables. For example for the consult-line command I was facing the same issue, that candidates must be unique with respect to equal and not to eq.

cc /u/JDRiverRun

[–] JDRiverRun@alien.top 1 points 11 months ago (4 children)

I’d also worry that an eq test is a bit fragile, and could go mysteriously wrong if any step in the chain decided down the road to copy or duplicate the string.

[–] hvis@alien.top 1 points 11 months ago (1 children)

Actually, I forgot how this works in most cases X-D.

And it happens through text properties, which backends add to their completion strings. Then the annotation and kind operations look them up.

[–] JDRiverRun@alien.top 1 points 11 months ago

Makes sense. I thought in the past the default completion system stripped out text properties? But I dimly recall that situation changed recently (v29?).

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