Thank you for the recommendation, let me try out this plugin.

I think this should already be supported, as Avante is a markdown filetype

I think this should already be supported, as Avante is a markdown filetype

But I don't know how to config it to make it work with avante 😕

It can't be used with this plugin, author says the following

OXY2DEV/markview.nvim#7 (comment)

What? we register treesitter of Avante to markdown. This is not correct

What? we register treesitter of Avante to markdown. This is not correct

avante.nvim/lua/avante/init.lua

Line 165 in cd94125

vim.treesitter.language.register("markdown", "Avante")

I have just now tried in local and it does not work trying to use the plugin, even configured for avante file type in the plugin.
It seems to be other things that need to be set to make it work, other person says the same in the issue

OXY2DEV/markview.nvim#7 (comment)

That or maybe I am missing something

Here is a video of my trying it, and showing that if works for markdown but not for avante, and also the config I used.

Hmm I think the culprit is this https://github.com/OXY2DEV/markview.nvim/blob/main/plugin/markview.lua

  {
    "OXY2DEV/markview.nvim",
    enabled = true,
    lazy = false,
    ft = { "markdown", "norg", "rmd", "org", "vimwiki", "Avante" },
    opts = {
      file_types = { "markdown", "norg", "rmd", "org", "vimwiki", "Avante" },
      buf_ignore = {},
      max_length = 99999,
    },
  },

Even I enable all all buffer it doesn't seem to register correctly

Hmm I think the culprit is this https://github.com/OXY2DEV/markview.nvim/blob/main/plugin/markview.lua

  {
    "OXY2DEV/markview.nvim",
    enabled = true,
    lazy = false,
    ft = { "markdown", "norg", "rmd", "org", "vimwiki", "Avante" },
    opts = {
      file_types = { "markdown", "norg", "rmd", "org", "vimwiki", "Avante" },
      buf_ignore = {},
      max_length = 99999,
    },
  },

Even I enable all all buffer it doesn't seem to register correctly

I think you need to use "filetypes" as name for the option, not "file_types"

https://github.com/OXY2DEV/markview.nvim/wiki/Configuration-options#-configuration-options

I think that the problem is in this function, in the file you referenced:

https://github.com/OXY2DEV/markview.nvim/blob/1fd113802e008f09c6bb91d352f770e8b0bd4da4/plugin/markview.lua#L152

ye my bad, but this work

  {
    "OXY2DEV/markview.nvim",
    enabled = true,
    lazy = false,
    ft = { "markdown", "norg", "rmd", "org", "vimwiki", "Avante" },
    opts = {
      filetypes = { "markdown", "norg", "rmd", "org", "vimwiki", "Avante" },
      buf_ignore = {},
      max_length = 99999,
    },
  },

For future reference, all markdown renderer plugins should be supported by Avante by default, as Avante filetype is a markdown alias.