[Question] CSS LSP input.

[nabezokodaikon]

Problems summary

I don't know the proper setting for CSS forceCompletionPattern. Completion candidates that start with a colon are not entered correctly.

Expected

Find out the proper settings for the CSS forceCompletionPattern.

Environment Information

• ddc.vim version (SHA1): 9c43cf1f89136a2b6592e694a693c9676a3ffaa7

• ddc-nvim-lsp version (SHA1): 75b53823d900d9be55a77fe2d096d54d0eaa262c

• denops.vim version (SHA1): f575cd5c56787b764e064da845b72ceea184ea97

• deno version(deno -V output): 1.15.1

• OS: Mac

• neovim/Vim :version output: 0.5.1

• :checkhealth or :CheckHealth result(neovim only): OK

Provide a minimal init.vim/vimrc with less than 50 lines (Required!)

if &compatible
    set nocompatible
endif
let $CACHE = expand('~/.cache')
if !isdirectory(expand($CACHE))
    call mkdir(expand($CACHE), 'p')
endif
let s:dein_dir = expand('$CACHE/dein')
let s:dein_repo_dir = s:dein_dir . '/repos/github.com/Shougo/dein.vim'
if &runtimepath !~# '/dein.vim'
    if !isdirectory(s:dein_repo_dir)
        execute '!git clone https://github.com/Shougo/dein.vim' s:dein_repo_dir
    endif
    execute 'set runtimepath^=' . s:dein_repo_dir
endif
call dein#begin(s:dein_dir, expand('<sfile>'))
call dein#add('neovim/nvim-lspconfig')
call dein#add('vim-denops/denops.vim')
call dein#add('Shougo/ddc.vim')
call dein#add('Shougo/ddc-matcher_head')
call dein#add('Shougo/ddc-sorter_rank')
call dein#add('Shougo/ddc-nvim-lsp')
call dein#end()
call dein#save_state()
if has('vim_starting') && dein#check_install()
    call dein#install()
endif
inoremap jj <ESC>
lua << EOF
local capabilities = vim.lsp.protocol.make_client_capabilities()
capabilities.textDocument.completion.completionItem.snippetSupport = true
require"lspconfig".cssls.setup {
  capabilities = capabilities,
}
EOF
call ddc#custom#patch_global('sources', ['nvim-lsp'])
call ddc#custom#patch_global('sourceOptions', {
      \ '_': {
      \   'minAutoCompleteLength': 1,
      \   'matchers': ['matcher_head'],
      \   'sorters': ['sorter_rank']},
      \ 'nvim-lsp': {
      \   'forceCompletionPattern': '\:\w*' },
      \ })
call ddc#enable()

How to reproduce the problem from neovim/Vim startup (Required!)

1. Enter html: in the CSS file.

nvim-cmp setup

if &compatible
    set nocompatible
endif
let $CACHE = expand('~/.cache')
if !isdirectory(expand($CACHE))
    call mkdir(expand($CACHE), 'p')
endif
let s:dein_dir = expand('$CACHE/dein')
let s:dein_repo_dir = s:dein_dir . '/repos/github.com/Shougo/dein.vim'
if &runtimepath !~# '/dein.vim'
    if !isdirectory(s:dein_repo_dir)
        execute '!git clone https://github.com/Shougo/dein.vim' s:dein_repo_dir
    endif
    execute 'set runtimepath^=' . s:dein_repo_dir
endif
call dein#begin(s:dein_dir, expand('<sfile>'))
call dein#add('neovim/nvim-lspconfig')
call dein#add('hrsh7th/nvim-cmp')
call dein#add('hrsh7th/cmp-nvim-lsp')
call dein#end()
call dein#save_state()
if has('vim_starting') && dein#check_install()
    call dein#install()
endif
inoremap jj <ESC>
lua << EOF
local capabilities = vim.lsp.protocol.make_client_capabilities()
capabilities.textDocument.completion.completionItem.snippetSupport = true
require"lspconfig".cssls.setup {
  capabilities = capabilities,
}
local cmp = require('cmp')
cmp.setup {
    mapping = {
        ['<C-p>'] = cmp.mapping.select_prev_item(),
        ['<C-n>'] = cmp.mapping.select_next_item(),
    },
    sources = {
        { name = 'nvim_lsp' }
    },
}
EOF

Screenshot (if possible)

ddc-nvim-lsp

nvim-cmp

[nabezokodaikon]

I solved it with the following settings.

call ddc#custom#patch_filetype(['css'], {
      \ 'keywordPattern': '[a-zA-Z_:\s]\w*',
      \ 'smartCase': v:true,
      \ })

[nabezokodaikon]

After all I couldn't do it well. The settings are as follows.

call ddc#custom#patch_filetype(['css'], {
      \ 'keywordPattern': '[a-zA-Z_:]\w*',
      \ 'smartCase': v:true,
      \ })
call ddc#custom#patch_filetype(['css'], 'sources', ['nvim-lsp'])
call ddc#custom#patch_filetype(['css'], 'sourceOptions', {
      \ 'nvim-lsp': {
      \   'forceCompletionPattern': ':\s\w*' },
      \ })

The item called Unit of LSP is not completed correctly.

[Shougo]

Your keyword pattern is wrong. You should know what is you have set.

\ 'keywordPattern': '[a-zA-Z_:]\w*', does not match 10.

You need to use \w* instead.

[nabezokodaikon]

I'm sorry. Could you tell me the general settings?

[Shougo]

What is the general? You need to configure plugins as you need.

[nabezokodaikon]

I'm sorry. I would like to know an example of a specific setting method.

[Shougo]

No magic. You need to configure by try and error.

[Shougo]

It means:

If you don't want to configure plugins, you don't have to use the plugin. It does not work with zero configuration. You can use other plugins.

ddc works as you configure.

[nabezokodaikon]

Understood.

[Shougo]

The default pattern is \k*. It may be better if you don't want to configure patterns. But you have changed it. It is own risk.

[Shougo]

I think nvim-lsp may set better pattern automatically from LSP server. But it is not my policy. It is too complicated and it is not easy to configure by users.