How to modify popup window highlights (i.e. "Please choose an appropriate main file")?

[tuurep]

Neovim: v0.11.1

Hi, I have this problem where it seems like the prompt window is lacking a background color:

I tried setting a bunch of highlight groups in my colorscheme such as:

NormalFloat
PMenu
VimtexPopupPrompt
VimtexPopupPromptContent
VimtexPopupPromptInput

None have any effect

Reproduced on minimal config:

-- vim.g.foo = true


--

for _, plugin in ipairs({
    "nvim-treesitter/nvim-treesitter",
    -- "foo-author/bar-plugin",
    "lervag/vimtex"


    --
}) do
    local install_path = vim.fn.fnamemodify(
        "~/.config/nvim/test/plugins" .. plugin:match("/%S+$"), ":p"
    )
    if vim.fn.isdirectory(install_path) == 0 then
        vim.fn.system({
            "git", "clone", "--depth=1",
            "https://github.com/" .. plugin, install_path
        })
    end
    vim.opt.runtimepath:append(install_path)
end

-- require("bar-plugin").setup()


--

-- nvim --clean -nu ~/.config/nvim/test/minimal-init.lua

Looks similar in nvim's default colorscheme:

I'm not quite sure what it's intended to look like (hopefully not this), do you have any idea? :)

[tuurep]

I feel like the nvim-treesitter is a bit of a red herring in the minimal configs:

• that's only there because when I test minimal config on Lua files, for some reason I get some errors without the treesitter parser installed.

Made double sure the same happens with "nvim-treesitter" not even installed in minimal config.

[lervag]

I can reproduce this by starting with the included file as an argument, i.e. nvim --clean -u test.vim included.tex. If I instead do nvim --clean -u test.vim and then :e included.tex, it works as expected. I use the following test setup:

.
├── a.tex
├── b.tex
├── included.tex
└── test.vim

where a.tex and b.tex look like this:

\documentclass{minimal}
\begin{document}

\input{included.tex}

\end{document}

and included.tex just contains "hello moon". Finally, test.vim look like this:

set nocompatible
set runtimepath^=~/.local/plugged/vimtex
set runtimepath+=~/.local/plugged/vimtex/after
filetype plugin indent on
syntax enable

To be honest, I'm not quite sure what the problem is. I believe it may be that the filetype was sourced before the colorscheme is applied. I'm looking into it some more now.

[lervag]

Ok, cool - it doesn't quite feel right that this would be a package manager issue either.

Perhaps another approach to this whole thing would be to make a fully minimal example independent of VimTeX? I mean, it sort of feels like a bug of neovim itself.

[tuurep]

Could be a good idea, is it a floating window that's being created? I never used those much but time to learn 😄

[lervag]

Here's a simple example that reproduces the problem without VimTeX; I believe one of us could commit this to the neovim repo and ask for guidance there.

filetype plugin indent on
syntax enable

nnoremap q :qall!<cr>

function! Select(list) abort
  let l:content = ['prompt', '']
  let l:i = 0
  for l:x in a:list
    let l:i += 1
    call add(l:content, printf('%d: %s', l:i, type(l:x) == v:t_dict ? l:x.name : l:x))
  endfor

  let l:content = map(
        \ [''] + deepcopy(l:content),
        \ { _, x -> empty(x) ? x : repeat(' ', 1) . x }
        \)

  " Create and fill the buffer
  let l:bufnr = nvim_create_buf(v:false, v:true)
  call nvim_buf_set_lines(l:bufnr, 0, -1, v:false, l:content)
  call nvim_buf_set_option(l:bufnr, 'buftype', 'nofile')

  " Create popup window
  let l:winopts = #{
        \ width: 30,
        \ height: 10,
        \ style: "minimal",
        \ noautocmd: v:true,
        \ relative: 'win',
        \ row: (winheight(0) - 10)/3,
        \ col: (winwidth(0) - 30)/2
        \}
  call nvim_open_win(l:bufnr, v:true, l:winopts)
  redraw!

  let l:value = [-1, '']
  while v:true
    try
      let l:length = len(a:list)
      let l:choice = nr2char(getchar())

      if l:choice !~# '\d' | continue | endif
      let l:choice -= 1

      if l:choice >= 0 && l:choice < l:length
        let l:value = [l:choice, a:list[l:choice]]
        break
      endif
    endtry
  endwhile

  close
  call nvim_buf_delete(l:bufnr, #{force: v:true})

  return l:value
endfunction


"colorscheme vim

echom Select(['hello', 'world'])

To use the example, save the content to e.g. test.vim, then run nvim --clean -u test.vim. It will open the popup without background color. You type e.g. 1 to close the popup. Then to open it again type :echo Select([1, 2]) - now you see the background color is correct. Further, if you uncmment the colorscheme line the background color is correct again.

[lervag]

I opened an issue now: neovim/neovim#34516

[tuurep]

Thank you! I had it on my todo, but got caught up with other things.

You could describe with better context than I would have. Let me know if you need anything else.