LSP completions only affect first selection in multiple selection

[aral]

Summary

If you have multiple selections, language completion only affects the first one.

Reproduction Steps

Create a simple JS file and ensure JS LSP is installed.

const be

console.log('to', foo, 'or not to', foo)

1. g3g (goto line 3)
2. x (select line)
3. s + foo return (select both foo instances)
4. c (change)
5. b ctrl x (autocomplete: select “be” constant – note: tab doesn’t seem to work with a two-letter autocompletion. Note: behaviour is the same if you use tab with a longer completion.)

What should happen

Both foo instances should autocomplete to be:

const be

console.log('to', be, 'or not to', be)

What actually happens

Only the first foo autocompletes to be:

const be

console.log('to', be, 'or not to', b)

Helix log

n/a

Platform

Linux (elementary OS 6; based on Ubuntu)

Terminal Emulator

io.elementary.t

Helix Version

helix 22.05-dev (2d4f94e)

I've had this exact same issue right now coding with Go.

[aral]

@crdpa I just ran into it again myself. This is something that you can easily find yourself wanting to do quite often. It’s one of those things that I realise has made me quite tense when using Helix with multiple selections as I’m not entirely sure when it’s going to garble what I’m doing (the other is the auto completion of quotes not acting intelligently #2400) :)

[the-mikedavis]

@aral would you mind moving the workaround from the FAQ to this issue? I think that workaround fits better on this issue than the faq

[aral]

@the-mikedavis Sure. I just thought it might help folks if it was more visible as it’s such a common thing.

[aral]

Use LSP autocomplete with multiple selections (temporary workaround)

Until the bug with LSP autocomplete with multiple selections is fixed, you can use this workaround:

import assert from 'assert'
import test from 'tape'

test ('stuff', t => {
  assert(x)
  assert(y)
  assert(z)
})

To move from basic asserts to tape’s asserts:

1. Select and start changing the first assert wc and start typing t.tr tab and select true from the list to auto-complete.

2. Select the completed text (t.true) (alt← to select previous adjacent sibling) and yank it (y)

3. Select the lines with the two remaining assert statements using x and select the asserts using s assert

4. Replace the selected text with the yanked text (R) to get:

import assert from 'assert'
import test from 'tape'

test ('stuff', t => {
  t.true(x)
  t.true(y)
  t.true(z)
})

Once the bug is fixed you will simply be able to select all three asserts and replace them all using auto-complete.

[aral]

PS. Above copy/pasted from the Wiki which uses asciidoc. Not sure why when markdown is used everywhere else. Don’t have time to look into converting it now.

[the-mikedavis]

Yeah we should probably convert the faq to markdown at some point to be consistent. I'll give the comment an edit and see if I can fix the display

[mtoohey31]

I've made an attempt at fixing this here: https://github.com/mtoohey31/helix/tree/feat/multi-selection-autocomplete. It seems to work, but I'm pretty sure I've made some unsafe assuptions about what the different offsets might be, so I don't think it's ready for a PR yet. Maybe someone who's more familiar with this code can use my attempt as a starting point.

[gf3]

just in case it's helpful here's an asciinema of the issue → https://asciinema.org/a/523860