Weird highlight of the "brackets" in floating window

[thekaganugur]

Problems summary

I'm using CoC, when I hover to get documentation via float window, the parentheses background color is weird as need in screenshots.

Expected

Proper background color for parentheses on the floating window.

Environment Information

• terminal: iTerm2 3.3.12
• vim/nvim version:NVIM v0.4.4

Minimal vim rc

call plug#begin('~/.nvim/plugged')
  Plug 'neoclide/coc.nvim', {'branch': 'release'}
  Plug 'sheerun/vim-polyglot'
  Plug 'lifepillar/vim-solarized8'
call plug#end()

set termguicolors
set background=light
colorscheme solarized8_flat

" Use K to show documentation in preview window.
nnoremap <silent> K :call <SID>show_documentation()<CR>

function! s:show_documentation()
  if (index(['vim','help'], &filetype) >= 0)
    execute 'h '.expand('<cword>')
  elseif (coc#rpc#ready())
    call CocActionAsync('doHover')
  else
    execute '!' . &keywordprg . " " . expand('<cword>')
  endif
endfunction

The reproduce ways from neovim

1. Install dependecys
2. Write console.log() inside an JS/TS file
3. How with 'K' over log

Screen shot

Related

neoclide/coc.nvim#1248
joshdick/onedark.vim#197 (comment)
scalameta/coc-metals#309

[lifepillar]

On a cursory read through the links you have posted, this appears to me like a coc.nvim issue. If I have understood correctly, the delimiters are highlighted with Normal. What happens if you set:

let g:solarized_termtrans=1

and reload the color scheme? With that option the Normal's background is not set, so the background will inherit your terminal's background. Does that also fix your issue?

[thekaganugur]

Sorry, nothing changed. Disabling syntax highlighting on floating windows fixes the issue if this will give you a clue.

[lifepillar]

That's strange. I have seen two proposed solutions to the issue. The first is to override Normal after loading the color scheme, using an autocommand:

autocmd Colorscheme solarized8_flat hi Normal guifg=#657b83 ctermfg=66 guibg=NONE ctermbg=NONE

But if setting g:solarized_termtrans didn't fix it, I doubt that the above will do.

Elsewhere, I have seen people override a Quote highlight group instead. So, you might also try:

autocmd Colorscheme solarized8_flat hi Quote guifg=#657b83 ctermfg=66 guibg=NONE ctermbg=NONE

I cannot reproduce this right now, because I don't use none of Neovim, Plug, coc.nvim, etc. I'll try to set up a test environment when possible.

[tkolleh]

I am seeing red highlights in floating menus not sure if this is related to this issue:

How would I go about changing the floating menu to solarized dark colors or a simple white background. I'd prefer more contrast to make it easier to read floating menus.

Version details...Click to expand!

NVIM v0.5.0-nightly-246-g7caa622af
Build type: Release
LuaJIT 2.0.5

Packages which trigger completion:

call minpac#add('neovim/nvim-lspconfig', {'type': 'start'})
call minpac#add('nvim-treesitter/nvim-treesitter', {'type': 'start', 'do': 'TSUpdate'})

[yudai0804]

On a cursory read through the links you have posted, this appears to me like a coc.nvim issue. If I have understood correctly, the delimiters are highlighted with Normal. What happens if you set:

let g:solarized_termtrans=1

and reload the color scheme? With that option the Normal's background is not set, so the background will inherit your terminal's background. Does that also fix your issue?

I had the same problem, but I did the method you suggested and the problem was solved.
Thank you very much.
By the way, I was using Vim 8.2