Unaligned signatureHelp on snippet expansion

[oblitum]

Result from CocInfo

versions

vim version: NVIM v0.4.0-890-ged24a297e node version: v11.15.0 coc.nvim version: 0.0.68 term: tmux-256color platform: linux

Error messages

Output channel: prettier

Output channel: snippets

Output channel: languageserver.ccls

18:40:11 ccls           initialize.cc:271 I initialize in directory /home/francisco/Projects/yuzu-canary with uri file:///home/francisco/Projects/yuzu-canary
18:40:11 ccls           initialize.cc:294 I initializationOptions: {"compilationDatabaseCommand":"","compilationDatabaseDirectory":"","cache":{"directory":"/tmp/ccls","format":"binary","hierarchicalPath":false,"retainInMemory":2},"capabilities":{"documentOnTypeFormattingProvider":{"firstTriggerCharacter":"}","moreTriggerCharacter":[]},"foldingRangeProvider":true,"workspace":{"workspaceFolders":{"supported":true,"changeNotifications":true}}},"clang":{"excludeArgs":[],"extraArgs":[],"pathMappings":[],"resourceDir":""},"client":{"hierarchicalDocumentSymbolSupport":true,"linkSupport":true,"snippetSupport":true},"codeLens":{"localVariables":true},"completion":{"caseSensitivity":2,"detailedLabel":true,"dropOldRequests":true,"duplicateOptional":true,"filterAndSort":true,"include":{"blacklist":[],"maxPathSize":30,"suffixWhitelist":[".h",".hpp",".hh",".inc"],"whitelist":[]},"maxNum":100},"diagnostics":{"blacklist":[],"onChange":1000,"onOpen":0,"onSave":0,"spellChecking":true,"whitelist":[]},"highlight":{"largeFileSize":2097152,"lsRanges":false,"blacklist":[],"whitelist":[]},"index":{"blacklist":[],"comments":2,"initialNoLinkage":false,"initialBlacklist":[],"initialWhitelist":[],"maxInitializerLines":5,"multiVersion":0,"multiVersionBlacklist":[],"multiVersionWhitelist":[],"name":{"suppressUnwrittenScope":false},"onChange":false,"parametersInDeclarations":true,"threads":0,"trackDependency":2,"whitelist":[]},"request":{"timeout":5000},"session":{"maxNum":10},"workspaceSymbol":{"caseSensitivity":1,"maxNum":1000,"sort":true},"xref":{"maxNum":2000}}
18:40:11 ccls           initialize.cc:323 I use -resource-dir=/usr/lib/clang/8.0.0
18:40:11 ccls           initialize.cc:356 I workspace folder: /home/francisco/Projects/yuzu-canary/
18:40:11 ccls              project.cc:397 I loaded /home/francisco/Projects/yuzu-canary/compile_commands.json
18:40:11 ccls           initialize.cc:381 I start 8 indexers
18:40:11 ccls           initialize.cc:389 I dispatch initial index requests
18:40:11 preamble     sema_manager.cc:734 I create session for /home/francisco/Projects/yuzu-canary/src/yuzu/bootmanager.cpp
...

Describe the bug

SignatureHelp argument alignment is correct when typing signatureHelp triggers, but it isn't great after a snippet expansion, it seems random.

Reproduce the bug

• I was coding the yuzu sources built with -DCMAKE_EXPORT_COMPILE_COMMANDS=ON in the screenshots

• Create file mini.vim with:

  if empty(glob('~/.vim/autoload/plug.vim'))
  silent !mkdir -p "$HOME/.vim/autoload"
  silent !curl -fLo "$HOME/.vim/autoload/plug.vim" 'https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim'
  endif
  
  call plug#begin('~/.vim/plugged')
  Plug 'tpope/vim-sensible'
  call plug#load('vim-sensible')
  Plug 'neoclide/coc.nvim'
  call plug#end()
  
  augroup vimrc | autocmd! | augroup end
  
  function! s:coc_config() abort
  let root_patterns = ['.vim/', '.git/', '.hg/', '.projections.json']
  let languageservers = {}
  
  if executable('ccls')
    let languageservers['ccls'] = {
    \   'command': 'ccls',
    \   'filetypes': ['c', 'cpp', 'objc', 'objcpp'],
    \   'rootPatterns': ['.ccls', 'compile_commands.json'] + root_patterns,
    \   'initializationOptions': {
    \     'cache': {
    \       'directory': '/tmp/ccls'
    \     }
    \   }
    \ }
  endif
  
  if !empty(languageservers)
    call coc#config('languageserver', languageservers)
  endif
  endfunction
  
  autocmd vimrc VimEnter * if exists('g:did_coc_loaded') | call s:coc_config() | endif
  
  autocmd vimrc User CocJumpPlaceholder call CocActionAsync('showSignatureHelp')

• Start neovim with command: nvim -u mini.vim src/yuzu/bootmanager.cpp

• Do completion according to screenshots

Screenshots

After snippet expansion (random)

After trigger (correct)

[chemzqm]

Align works with cursor position, so it's expected, it's not possible to guarantee the align works perfect when using vim's alogrithms to break the lines.

[oblitum]

ok :-/

[chemzqm]

I've improved the position, should work most of time.

[oblitum]

@chemzqm thx. Looks much better now.