[Feature Request] `nushell` integration

[MarvinJWendt]

Checklist

• I have read through the manual page (man fzf)
• I have searched through the existing issues
• For bug reports, I have checked if the bug is reproducible in the latest version of fzf

Output of fzf --version

0.56.3 (v0.56.3)

OS

• Linux
• macOS
• Windows
• Etc.

Shell

• bash
• zsh
• fish

Feature Request

Hi, I am currently switching to nushell as my main shell. I noticed that fzf does not have a nushell integration.
I would like to propose to add a nushell integration, like it is done for zsh, bash and fish.

I really miss the CTRL+t keybind in nushell, as that was my goto way of selecting files in my terminal.

[igor-ramazanov]

@@MarvinJWendt

If you save this in the file and do use <filename>.nu *?

# Dependencies: `fd`, `bat, `rg`, `nufmt`, `tree`.


export-env {
  $env.FZF_ALT_C_COMMAND = "fd --type directory --hidden"
  $env.FZF_ALT_C_OPTS = "--preview 'tree -C {} | head -n 200'"
  $env.FZF_CTRL_T_COMMAND = "fd --type file --hidden"
  $env.FZF_CTRL_T_OPTS = "--preview 'bat --color=always --style=full --line-range=:500 {}' "
  $env.FZF_DEFAULT_COMMAND = "fd --type file --hidden"
}

# Directories
const alt_c = {
    name: fzf_dirs
    modifier: alt
    keycode: char_c
    mode: [emacs, vi_normal, vi_insert]
    event: [
      {
        send: executehostcommand
        cmd: "
          let fzf_alt_c_command = \$\"($env.FZF_ALT_C_COMMAND) | fzf ($env.FZF_ALT_C_OPTS)\";
          let result = nu -c $fzf_alt_c_command;
          cd $result;
        "
      }
    ]
}

# History
const ctrl_r = {
  name: history_menu
  modifier: control
  keycode: char_r
  mode: [emacs, vi_insert, vi_normal]
  event: [
    {
      send: executehostcommand
      cmd: "
        let result = history
          | get command
          | str replace --all (char newline) ' '
          | to text
          | fzf --preview 'printf \'{}\' | nufmt --stdin 2>&1 | rg -v ERROR';
        commandline edit --append $result;
        commandline set-cursor --end
      "
    }
  ]
}

# Files
const ctrl_t =  {
    name: fzf_files
    modifier: control
    keycode: char_t
    mode: [emacs, vi_normal, vi_insert]
    event: [
      {
        send: executehostcommand
        cmd: "
          let fzf_ctrl_t_command = \$\"($env.FZF_CTRL_T_COMMAND) | fzf ($env.FZF_CTRL_T_OPTS)\";
          let result = nu -l -i -c $fzf_ctrl_t_command;
          commandline edit --append $result;
          commandline set-cursor --end
        "
      }
    ]
}

# Update the $env.config
export-env {
  if not ($env.__keybindings_loaded? | default false) {
    $env.__keybindings_loaded = true
    $env.config.keybindings = $env.config.keybindings | append [
      $alt_c
      $ctrl_r
      $ctrl_t
    ]
  }
}

[igor-ramazanov]

I guess, if cleaned up, then it could serve as PR.

Things to consider: remove everything that does not come with the clean nushell installation:

• fd
• rg
• tree
• bat

And delegating as much as possible to the FZF_* env vars.