neovim/lua/plugins/telescope.lua

-- Install and configure Telescope
--  https://github.com/nvim-telescope/telescope.nvim
return {
  "nvim-telescope/telescope.nvim",
  branch = "0.1.x",
  dependencies = {
    "nvim-lua/plenary.nvim",
    -- C implementation of fzf to improve performance 
    {
			"nvim-telescope/telescope-fzf-native.nvim",
			build = "make"
		},
    "nvim-tree/nvim-web-devicons",

		-- Some missing dependendies ?
		-- Extension to telescope to use Ag (or ripgrep) to filter results
		-- 'kelly-lin/telescope-ag'
		-- Allow to search for snippets
		-- 'benfowler/telescope-luasnip.nvim'
  	-- Highlight, edit, and navigate code
		-- 'nvim-treesitter/nvim-treesitter',
		-- 'nvim-treesitter/nvim-treesitter-textobjects',
	},
  
	-- Configure Telescope
  config = function()
    local telescope = require("telescope")
    local actions = require("telescope.actions")

    telescope.setup({
      defaults = {

        -- Parce que c'est joli
        prompt_prefix = " ",
        selection_caret = " ",
        path_display = { "smart" },
        file_ignore_patterns = { ".git/", "node_modules" },

        mappings = {
          i = {
          },
        },
				pickers = {
					command_history = {
						theme = "dropdown",
					}
				}
      },
    })

    telescope.load_extension("fzf")
    -- telescope.load_extension("luasnip")
    -- telescope.load_extension("ag")

    -- set keymaps
		
		--  <leader>of for oldfiles
		vim.keymap.set(
			"n",
			"<leader>of",
			"<cmd>Telescope oldfiles<cr>",
			{ desc = " [?] Find recently opened files " }
		)

		--  <leader>sb
    vim.keymap.set(
      "n",
      "<leader>sb",
			"<cmd>Telescope buffers<cr>",
      { desc = "[S]earch [B]uffers " }
    )
    
		--  <leader>/ to fuzzily search in current buffer
		vim.keymap.set(
		  'n',
		  '<leader>/',
			"<cmd>Telescope current_buffer_fuzzy_find<cr>",
		  { desc = '[/] Fuzzily search in current buffer' })

		-- <leader>sh to search help
    vim.keymap.set(
      "n",
      "<leader>sh",
			"<cmd>Telescope help_tags<cr>",
      { desc = "[S]earch [H]elp" }
    )

		--  <leader>sf to search files
    vim.keymap.set(
      "n",
      "<leader>sf",
			"<cmd>Telescope find_files<cr>",
      { desc = "[S]earch [F]iles" }
    )

		--  <leader>gf to search files in git history
		vim.keymap.set(
      "n",
      "<leader>gf",
			"<cmd>Telescope git_files<cr>",
      { desc = "Search [G]it [F]iles" }
    )

		-- <leader>sg to (rip)grep through files
    vim.keymap.set(
      "n",
      "<leader>sg",
			"<cmd>Telescope live_grep<cr>",
      { desc = "[S]earch by [G]rep" }
    )

		--  <leader>sw to search for other occurrences of the current word
    vim.keymap.set(
      "n",
      "<leader>sw",
			"<cmd>Telescope grep_string<cr>",
      { desc = "[S]earch current [W]ord" }
    )

		--  <leader>ch to search in the command history 
    vim.keymap.set(
      "n",
      "<leader>sw",
			"<cmd>Telescope command_history<cr>",
      { desc = "[C]command [H]istory" }
    )
  end,
}