previewer for directories?

[Sebastian-Nielsen]

I cant seem to get previewer to work for directories. I would like to show ls -a for the currently selected directory in the previewer.

I have tried these but the previewer always just shows: preview is not supported for binary files.

			vim.keymap.set("n", "<leader>fp", function()
				fzf.fzf_exec(
					[[
	  find ~/dev -maxdepth 1 -type d ! -name 'dev' 2>/dev/null;
	]],
					{
						prompt = 'Find Projects> ',
						previewer = "builtin", 
						preview = "bash -c 'ls -a \"{}\" || echo Failed'", 
						actions = {
							["default"] = function(selected)
								if selected and selected[1] then
									local absolute_path = selected[1]
									require("oil").open(absolute_path)
								end
							end
						}
					}
				)
			end)

and this

			vim.keymap.set("n", "<leader>fp",
				function()
					fzf.files({
						prompt = 'Find Projects',
						cmd = "find ~/dev -maxdepth 1 -type d ! -name 'dev' 2>/dev/null; ",
						win_opts = {
							previewer = "builtin",
							preview = {
								hidden = false, 
								cmd = "ls -a %s"
							}
						},
						actions = {
							["default"] = function(selected)
								if selected and selected[1] then
									local absolute_path = string.sub(selected[1],7)
									require("oil").open(absolute_path)
								end
							end
						}
					})
				end
			)

[ibhagwan]

Remove previewer = "builtin", you’re trying to use fzf’s native previewer but you’re overriding it by specifying thru previewer.

[ibhagwan]

Also read the below, if you want to use a more elaborate setup (different command depending on the item) using a lua function:
https://github.com/ibhagwan/fzf-lua/wiki/Advanced#fzf-native-preview

This specific example from the link:

require'fzf-lua'.fzf_exec("rg --files", {
  fzf_opts = {
    ['--preview-window'] = 'nohidden,down,50%',
    ['--preview'] = {
      type = "cmd",
      fn = function(items)
        local ext = vim.fn.fnamemodify(items[1], ':e')
        if vim.tbl_contains({ "png", "jpg", "jpeg" }, ext) then
            return "chafa " .. items[1]
        end
        return string.format("bat --style=default --color=always %s", items[1])
      end
    }
  },
})