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feat(completion): completeopt=preselect, LSP CompletionItem.preselect #36613

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Problem: 
LSP CompletionItem.preselect is not supported.
https://microsoft.github.io/language-server-protocol/specifications/lsp/3.17/specification/#completionClientCapabilities

Solution:
- Add "preselect" field to complete-items and "preselect" flag
  to 'completeopt'.
- Set preselectSupport=true in LSP client capabilities.
This commit is contained in:
glepnir
2026-04-13 17:59:07 +08:00
committed by GitHub
parent 09d4eba92b
commit 53a29dce0e
12 changed files with 150 additions and 22 deletions
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64
test/functional/editor/completion_spec.lua
View File

@@ -266,6 +266,70 @@ describe('completion', function()
feed('i<C-r>=TestComplete()<CR><ESC>')
eq(0, eval('&l:modified'))
end)
describe('"preselect"', function()
it('"preselect" selects first item with preselect attribute', function()
source([[
function! TestComplete() abort
call complete(1, [
\ {'word': 'aaa'},
\ {'word': 'bbb'},
\ {'word': 'ccc', 'preselect': v:true},
\ {'word': 'ddd'},
\ ])
return ''
endfunction
function! TestCompleteMany() abort
let items = []
for i in range(20)
call add(items, {'word': 'item' .. i})
endfor
let items[15].preselect = v:true
call complete(1, items)
return ''
endfunction
]])
command('set completeopt=menuone,preselect')
feed('i<C-r>=TestComplete()<CR>')
screen:expect([[
ccc^ |
{4:aaa }{1: }|
{4:bbb }{1: }|
{12:ccc }{1: }|
{4:ddd }{1: }|
{1:~ }|*2
{5:-- INSERT --} |
]])
-- scrolls pum when preselect item is far down
feed('<Esc>S')
command('set pumheight=5')
feed('<C-r>=TestCompleteMany()<CR>')
screen:expect([[
item15^ |
{4:item13 }{12: }{1: }|
{4:item14 }{12: }{1: }|
{12:item15 }{1: }|
{4:item16 }{101: }{1: }|
{4:item17 }{12: }{1: }|
{1:~ }|
{5:-- INSERT --} |
]])
feed('<Esc>S')
command('set completeopt=menuone,noselect,preselect pumheight=0')
feed('<C-r>=TestComplete()<CR>')
screen:expect([[
^ |
{4:aaa }{1: }|
{4:bbb }{1: }|
{12:ccc }{1: }|
{4:ddd }{1: }|
{1:~ }|*2
{5:-- INSERT --} |
]])
end)
end)
end)
describe('completeopt+=noinsert does not add blank undo items', function()