Telescope picker for Neovim which only shows files in the most recent commit.

telescope-git-HEAD-files.lua

-- Telescope picker for files in most recent git commit
local pickers = require 'telescope.pickers'
local finders = require 'telescope.finders'
local conf = require('telescope.config').values
local Job = require 'plenary.job'
-- Telescope picker for files in most recent git commit
local pickers = require 'telescope.pickers'
local finders = require 'telescope.finders'
local conf = require('telescope.config').values
local Job = require 'plenary.job'
local function git_last_commit_files()
  ---@diagnostic disable-next-line: missing-fields
  local git_root = Job:new({
    command = 'git',
    args = { 'rev-parse', '--show-toplevel' },
  })
    :sync()[1]

  if not git_root then
    vim.notify('Not inside a git repo', vim.log.levels.ERROR)
    return
  end

  ---@diagnostic disable-next-line: missing-fields
  Job:new({
    command = 'git',
    cwd = git_root,
    args = { 'diff-tree', '--no-commit-id', '--name-only', '-r', 'HEAD' },
    on_exit = function(j)
      local rel_paths = j:result()

      local entries = vim.tbl_map(function(path)
        return {
          display = path, -- what telescope shows
          value = path, -- what the picker returns
          ordinal = path, -- what fuzzy match uses
          filename = git_root .. '/' .. path, -- used by file_previewer
        }
      end, rel_paths)

      vim.schedule(function()
        pickers
          .new({}, {
            prompt_title = 'Files in last commit',
            finder = finders.new_table {
              results = entries,
              entry_maker = function(entry)
                return entry
              end,
            },
            sorter = conf.generic_sorter {},
            previewer = conf.file_previewer {},
          })
          :find()
      end)
    end,
  }):start()
end
vim.keymap.set('n', '<leader>sc', git_last_commit_files, { desc = '[S]earch [c]hanged files in last commit' })