Interference with custom hightlights

[lukoshkin]

Having both project.nvim and this wonderful plugin erases the custom highlighting I made for trailing whitespaces. Commenting out just one of the two solves the problem (at least in some contexts -- I didn't test for all possible situations). I will try to prepare MWE if you are not aware of this problem already.

[rcarriga]

I'm not at all sure what you mean by this. You'll have to provide more information

[lukoshkin]

Update: After receiving a notification, custom highlights (here it is made for trailing whitespace) are cleared with the notification disappearing. So it is not connected to project.nvim directly as I thought originally.

init.lua

local packer = require 'packer'

packer.startup(function (use)
  use 'wbthomason/packer.nvim'
  use {
    'rcarriga/nvim-notify',
    config = function ()
      vim.notify = require'notify'
    end
  }
end)

vim.opt.termguicolors = true

vim.cmd [[
  highlight! Normal guibg=Black guifg=White
  highlight! ExtraWhitespace ctermbg=211 guibg=palevioletred
  au! FileType markdown hi ExtraWhitespace ctermbg=brown guibg=rosybrown

  au! BufWinEnter *\(_\)\@<! if len(bufname()) > 0
    \| match ExtraWhitespace /\s\+$/
    \| endif

  au! InsertEnter * if len(bufname()) > 0
    \| match ExtraWhitespace /\s\+\%#\@<!$/
    \| endif

  au! InsertLeave * if len(bufname()) > 0
    \| match ExtraWhitespace /\s\+$/
    \| endif

  au! BufWinLeave *\(_\)\@<! call clearmatches()
]]

require'notify'('Hello')

dummy.py (example of a file with trailing spaces)

#%%

<-- Trailing whitespace up to here on the line above -->
#%%

<-- Trailing whitespace up to here on the line above -->

I also show my keystrokes so that you know I do not clear the matches myself :)

[rcarriga]

Your BufWinLeave autocmd assumes that the buffer being removed is the current one but that's not the case here. When a notification buffer is hidden, the matches are being cleared for the current window. You need to pass the window to clear matches for

  au! BufWinLeave *\(_\)\@<! call clearmatches(bufwinid(expand("<abuf>")))

[lukoshkin]

Oh yes, thanks! I was looking for sth like "clearmatches" in your code but never gave a thought to it that the problem was on my end. Sorry for disturbing you!