neovim/lua/plugins/telescope.lua

local telescope = require('telescope')
local actions = require('telescope.actions')
local builtin = require('telescope.builtin')

local luasnip = require('luasnip')
local lst = telescope.extensions.luasnip

telescope.setup {
    defaults = {
        layout_strategy = "vertical",
        layout_config = {
            vertical = {
                prompt_position = "top",
            },
            horizontal = {
                prompt_position = "bottom",
            },
        },
        sorting_strategy = "ascending",
        live_grep_arguments = { 'rg',
            '--hidden', '--no-ignore', '--color=never',
            '--with-filename', '--line-number',
            '--column', '--smart-case', '--no-heading',
        },
    },
    pickers = {
        live_grep = {
            layout_strategy = "horizontal",
            mappings = {
                i = { ["<c-f>"] = actions.to_fuzzy_refine },
            },
        },
        find_files = {
            previewer = false,
        },
    },
    extensions = {
        luasnip = {
            search = function(entry)
                return lst.filter_null(entry.context.trigger) .. " " ..
                    lst.filter_null(entry.context.name) .. " " ..
                    entry.ft .. " " ..
                    lst.filter_description(entry.context.name, entry.context.description) ..
                    lst.get_docstring(luasnip, entry.ft, entry.context)[1]
            end
        },
    }
}

vim.keymap.set('n', '<leader>ff', builtin.find_files, {})
vim.keymap.set('n', '<leader>fg', builtin.git_files, {})
vim.keymap.set('n', '<leader>fs', telescope.extensions.luasnip.luasnip, {})
vim.keymap.set('n', '<leader>gg', builtin.live_grep, {})
vim.keymap.set('n', '<leader>bb', builtin.buffers, {})
vim.keymap.set('n', '<leader>hh', builtin.help_tags, {})
vim.keymap.set('n', '<leader>ss', builtin.lsp_dynamic_workspace_symbols, {})
vim.keymap.set('n', '<leader>sd', builtin.lsp_document_symbols, {})
vim.keymap.set('n', '<leader>dd', builtin.diagnostics, {})
vim.keymap.set('n', '<leader>gd', builtin.lsp_definitions, {})
vim.keymap.set('n', '<leader>gr', builtin.lsp_references, {})
vim.keymap.set('n', '<leader>gi', builtin.lsp_implementations, {})
vim.keymap.set('n', '<leader>ci', builtin.lsp_incoming_calls, {})
vim.keymap.set('n', '<leader>co', builtin.lsp_outgoing_calls, {})