nvim-web-devicons make other plugins bugged with floating texts

[hilmiwicak]

Image / video that shows the bug

Here below is telescope with nvim-web-devicons

Below is telescope without nvim-web-devicons

Steps to reproduce

1. Copy init.lua below

Click to expand init.lua

local lazypath = vim.fn.stdpath("data") .. "/lazy/lazy.nvim"
if not vim.loop.fs_stat(lazypath) then
  vim.fn.system({
    "git",
    "clone",
    "--filter=blob:none",
    "https://github.com/folke/lazy.nvim.git",
    "--branch=stable",
    lazypath,
  })
end
vim.opt.rtp:prepend(lazypath)

require("lazy").setup({
  { "nvim-lua/plenary.nvim", },
  {
    "nvim-telescope/telescope.nvim",
    dependencies = {
      "nvim-lua/plenary.nvim",
    },
    config = function ()
      local telescope_action_layout = require("telescope.actions.layout")

      require("telescope").setup({
        defaults = {
          initial_mode = "insert",
          mappings = {
            n = {
              ["<M-/>"] = telescope_action_layout.toggle_preview,
            },
            i = {
              ["<M-/>"] = telescope_action_layout.toggle_preview,
            }
          },
          preview = {
            hide_on_startup = true,
            filesize_limit = 10,
            treesitter = true,
          }
        },
        fzf = {
          fuzzy = true,
          override_generic_sorter = true,
          override_file_sorter = true,
          case_mode = "smart_case",
        },
      })
    end,
  },

  {
    "kyazdani42/nvim-web-devicons",
    config = function()
      require("nvim-web-devicons").setup({
        default = true,
      })
    end,
  },
})

2. nvim -u ~/nvim-test-config/init.lua
3. let lazy install the plugins
4. :Telescope find_files and see that there are some floating texts
5. Comment nvim-web-devicons part of lazy setup
6. Close nvim
7. nvim -u ~/nvim-test-config/init.lua
8. :Telescope find_files and there are no floating texts anymore

[scardenasb]

It seems to be because some icons code, it was happening to me with ".txt" icon, so I replaced it with the same icon but the version for mi os (unix), using:

require("nvim-web-devicons").setup({
	override_by_extension = {
		["txt"] = {
			icon = "",
			color = "#89e051",
			cterm_color = "113",
			name = "Txt",
		},
	},
})

[hilmiwicak]

Thank you for your reply @scardenasb ! I think this bug exist because tmux rendered it wrong. I just tried it outside tmux and it works just fine.

[nullwiz]

Thank you for your reply @scardenasb ! I think this bug exist because tmux rendered it wrong. I just tried it outside tmux and it works just fine.

Can confirm, I was having a similar issue in nvim-tree, where characters just end up there. Without tmux, it works fine.

[alex-courtis]

Great news!

[BartSte]

Thank you for your reply @scardenasb ! I think this bug exist because tmux rendered it wrong. I just tried it outside tmux and it works just fine.

Did you find a solution to make tmux render them correctly? Or did you just stop using tmux?

[alex-courtis]

Check your terminal then $TERM

The terminal you started tmux from must be able to render the icons. Check $TERM and test from outside of tmux.

Test again from within tmux: what is the $TERM ?

[BartSte]

@alex-courtis, thanks for your help.

I encounter the issue when running: Alacritty on windows + WSL2 + tmux
As expected, the issue does not exist when I run Alacritty on windows + WSL2 (without tmux).

My $TERM without tmux is: xterm-256color.
My $TERM with tmux is: tmux-256color.

When setting up tmux, I followed neovim's recommendations.

After doing some digging, I found a closed issue on the tmux repo suggesting the rendering issue was due to an issue with Window's ConPTY.

Also, this reddit post exactly matches the issue I had. No one suggested a solution, unfortunately.

Since only a small subset of the icons render incorrectly, the easiest workaround is to just replace those with other icons in my config.

I guess this is not an issue that can be solved by this repo, but hopefully these posts can help others encountering the same issue.

[alex-courtis]

Nice digging! Could I please ask you to post some of those icons? It will be a useful reference for others that will likely experience the same issue.

[BartSte]

Here a video of the issue:

• 

I encountered the issue with the icons related to the following file extensions:

• txt
• svg
• xml
• xmll
• xll
• scm
• smm
• toml
• docx
• log

[BartSte]

Oke I found the issue. I is indeed an issue with window's conpty. So for anyone encountering this issue, you need to make sure you have the latests version of conpty.dll and OpenConsole.exe, as is described in this post.

[alex-courtis]

Great news.

I'm not quite understanding the issue; can I please ask you to draft a section for README.md?

A PR would be great.

You can also use `get_icon_name_by_filetype(filetype)` to get the icon name associated with the filetype.

## Known Issues

### XXX Not Rendering In Alacritty On Windows (with tmux?)

Ensure something something dll...

## Contributing

PRs are always welcome! Please see [CONTRIBUTING](CONTRIBUTING.md)