Customising preview when the select item in "file_browser" is a "directory"

[vignesh0025]

I can see, previewer for directory is hardcoded here.
How do I customize this to just "ls" or my own commands ?

HardCoded ls -la

[l-kershaw]

As you noted, this is hard-coded, so there are no options that you can change to adjust this behaviour at the moment.

If you want to submit a PR for this, then I'm happy to review it, but be aware that the file_browser builtin is in the process of being moved to a separate repo here, so you may need to wait for that move to be completed before any new options can be added

[vignesh0025]

Thanks!

I made a custom previewer for the directories with icon and highlight support. Where can I submit the previewer ?

[l-kershaw]

It depends on how it is implemented where it would be best to go. Could you put it in a gist and then put the link here? I'll be able to better advise then 🙂

[vignesh0025]

Here's the one I did. May not be as per the expected standard but I am willing to accept reviews and modify it.

local previewers = require('telescope.previewers')
    local icons = require'nvim-web-devicons'
    local new_maker = function(filepath, bufnr, opts)
        opts = opts or {}

        filepath = vim.fn.expand(filepath)
        local height = vim.api.nvim_win_get_height(opts.winid)
        vim.loop.fs_stat(filepath, function(err, stat)
            if stat.type == "directory" then
                vim.loop.fs_scandir(filepath, function(err, dir)
                    local ls = {}
                    local highlights = {}

                    local data = vim.loop.fs_scandir_next(dir)
                    local i = 1
                    while data ~= nil  do
                        local abspath = filepath..data
                        local stat = vim.loop.fs_stat(abspath)
                        if stat.type == "directory" then
                            icon,hl = "","DevIconDefault"
                        else
                            icon, hl = icons.get_icon(abspath, string.match(abspath, "%a+$"),
                                {default=true})
                        end
                        table.insert(ls, (icon or "").." "..data)
                        table.insert(highlights, hl)
                        data = vim.loop.fs_scandir_next(dir)
                        if i == height then
                            break
                        end
                        i = i + 1
                    end
                    vim.schedule(function()
                        vim.api.nvim_buf_set_lines(bufnr, 0, -1, false, ls)
                        for i,ihl in ipairs(highlights) do
                            vim.api.nvim_buf_add_highlight(bufnr, -1, ihl, i-1, 1, 3)
                        end
                    end)
                end)
            else
                previewers.buffer_previewer_maker(filepath, bufnr, opts)
            end
        end)
    end

    require('telescope').setup{
        defaults = {
            buffer_previewer_maker = new_maker,
         }
   }