How can I use Telescope.nvim to complete a path in insert mode? - neovim

Question

Fzf.vim implements a fuzzy finder in insert mode, extending the native ins-completion functionality.
For example: in insert mode, we can map <c-x><c-f> to enable Fzf.vim to fuzzy find and insert file names with relative paths (fzf-complete-path). The same functionalities are implemented for words (fzf-complete-word) and lines (fzf-complete-line) completions.
Here are the Fzf.vim mapping example of these functions:
" Insert mode completion
imap <c-x><c-k> <plug>(fzf-complete-word)
imap <c-x><c-f> <plug>(fzf-complete-path)
imap <c-x><c-l> <plug>(fzf-complete-line)
How can I set the same behavior with Telescope.nvim?

Answer 1

You can define a custom action and map it to a key to execute it in Telescope.
I've written a set of actions for this task (to insert file paths in the current buffer): telescope-insert-path.nvim
You just need to make your custom mappings in the require'telescope'.setup().
local path_actions = require('telescope_insert_path')
require('telescope').setup {
defaults = {
mappings = {
n = {
["pi"] = path_actions.insert_relpath_i_insert,
["pI"] = path_actions.insert_relpath_I_insert,
["pa"] = path_actions.insert_relpath_a_insert,
["pA"] = path_actions.insert_relpath_A_insert,
["po"] = path_actions.insert_relpath_o_insert,
["pO"] = path_actions.insert_relpath_O_insert,
["Pi"] = path_actions.insert_abspath_i_insert,
["PI"] = path_actions.insert_abspath_I_insert,
["Pa"] = path_actions.insert_abspath_a_insert,
["PA"] = path_actions.insert_abspath_A_insert,
["Po"] = path_actions.insert_abspath_o_insert,
["PO"] = path_actions.insert_abspath_O_insert,
["<leader>pi"] = path_actions.insert_relpath_i_visual,
["<leader>pI"] = path_actions.insert_relpath_I_visual,
["<leader>pa"] = path_actions.insert_relpath_a_visual,
["<leader>pA"] = path_actions.insert_relpath_A_visual,
["<leader>po"] = path_actions.insert_relpath_o_visual,
["<leader>pO"] = path_actions.insert_relpath_O_visual,
["<leader>Pi"] = path_actions.insert_abspath_i_visual,
["<leader>PI"] = path_actions.insert_abspath_I_visual,
["<leader>Pa"] = path_actions.insert_abspath_a_visual,
["<leader>PA"] = path_actions.insert_abspath_A_visual,
["<leader>Po"] = path_actions.insert_abspath_o_visual,
["<leader>PO"] = path_actions.insert_abspath_O_visual,
-- Additionally, there's normal mode mappings for the same actions:
-- ["<leader><leader>pi"] = path_actions.insert_relpath_i_normal,
-- ...
}
}
}
}