"Flickering" and missing headlines

[refaelsh]

Describe the bug

Hard to describe in words, please see the attached screenshot, and then I will try to explain in words.
Saw the screenshot? Great.

1. There are some headings missing, between lines 76 and 298. They are definitely there, I remember entering them and I can see them when doing cat file.org.
2. Line 298, the background of the heading looks "garbled" on the left side.
3. After line 311 there are some strange thingies.
4. And many more strange "flickering" that are hard to describe in words.

Steps to reproduce

Here the org file to reproduce it: https://pastebin.pl/view/6d3fc321.

Expected behavior

I should see none of the described problems.

Emacs functionality

No response

Minimal init.lua

I tried it with the minimal init.lua, and everything works.
So, the problem is definetly on my side.
Could you please provide ideas on how to debug it?

Screenshots and recordings

No response

OS / Distro

NixOS

Neovim version/commit

0.7.2

Additional context

No response

[jgollenz]

Unfortunately I know of no better way than to individually disabling your plugins or disabling all of them and gradually bring them back in. I know, it sucks. If someone has a better approach, let me know. Ofc, you can also bisect the list of your plugins to speed up the process

[refaelsh]

Unfortunately I know of no better way than to individually disabling your plugins or disabling all of them and gradually bring them back in. I know, it sucks. If someone has a better approach, let me know. Ofc, you can also bisect the list of your plugins to speed up the process

I will do it asap and report back. Thank you very much for your suggestion.

[refaelsh]

Found it. It is this one: https://github.com/lukas-reineke/headlines.nvim.
It is one of the recommended plugins from here: https://github.com/nvim-orgmode/orgmode#plugins.

Please suggest how to proceed :-)

[jgollenz]

@lukas-reineke any suggestions? I'm not using headlines.nvim

[lukas-reineke]

1. Not sure about the missing lines.. it might have something to do with the folding? But I can't reproduce this, can you share a file for which this happens?
2. This happens because your org headline highlight groups have a background color. https://github.com/akinsho/org-bullets.nvim uses that color for the bullets, but the background color of virtual text overwrites the highlight of the headline from headlines.nvim. To fix this, you have to remove the background color from OrgHeadlineLevel{1-39}.
   A quick and dirty way to do this without messing with your colorscheme would be something like this

for i = 1, 40, 1 do
    vim.cmd(string.format("highlight OrgHeadlineLevel%d guibg=NONE", i))
end

3. This happens because your font does not support the default character for headlines.nvim. You can either change/patch your font, or use a different character. For example this one

require("headlines").setup {
   	org = {
        fat_headline_lower_string = "▔",
    },
}

4. Not sure about this one either

If you can show me how to reproduce 1 and 4 I can take another look.
And we should probably close this issue here and open a new one in headlines.nvim

[refaelsh]

And we should probably close this issue here and open a new one in headlines.nvim

Done. Here is the link: lukas-reineke/headlines.nvim#41.