Show a nested picker with grep picker input history as source

[alcroito]

Originally posted at #1967 but that got closed as stale.

I often want to populate the snacks grep picker with input that I've previously searched for in the grep picker.

With Snacks.picker.grep I can use history_forward and history_back actions to navigate previous inputs. But this is cumbersome if the input I'm searching for is far in the history, and doesn't allow me to quickly find it.

Is there a way to spawn a nested picker with previous grep picker input history as the source, which when selected, would populate the input for a Snacks.picker.grep instance?

[emseidov]

Sorry, this is kinda unrelated to what you're asking, but how do you make history_back/forward work? 😁

Looked at your config tried tried doing the same, but didn't work for some reason. I wonder if I have to install something.

{
    "folke/snacks.nvim",
    opts = function(_, opts)
      local sources = opts.picker.sources or {}
      local matcher = opts.picker.matcher or {}
      local win = opts.picker.win or {}

      for _, name in ipairs(const.SNACKS.picker.sources) do
        sources[name] = const.SNACKS.picker.source_config
      end

      matcher.history_bonus = true
      matcher.frecency = true
      matcher.cwd_bonus = true
      matcher.sort_empty = true

      win = {
        input = {
          keys = {
            ["<a-Up>"] = { "history_forward", mode = { "i", "n" } },
            ["<a-Down>"] = { "history_back", mode = { "i", "n" } },
          },
        },
      }

      opts.picker.sources = sources
      opts.picker.matcher = matcher
      opts.win = win

      return opts
    end,

Tried with shift as too, in case alt/opt doesn't work in macOS.

[alcroito]

It works for me with my config at https://github.com/alcroito/dotfiles/blob/main/home/dot_config/nvim/lua/plugins/snacks.lua#L16 on macOS with Alt-Up, Alt-Down, with the iTerm2 terminal. Perhaps you are using a different terminal?

[emseidov]

It worked, thanks! I was setting the win config to wrong place. 😁

[drowning-cat]

You're so desperate for that feature:

---@module 'snacks'
{
  'folke/snacks.nvim',
  ---@type snacks.Config
  opts = {
    picker = {
      actions = {
        choose_history = function(picker)
          local history = picker.history.kv.data
          local items = {}
          for i = 1, #history do
            local hist = history[#history + 1 - i]
            table.insert(items, {
              idx = i,
              pattern = hist.pattern,
              search = hist.search,
              live = hist.live,
              text = hist.search .. ' ' .. hist.pattern,
            })
          end
          Snacks.picker.pick {
            title = 'Picker history',
            items = items,
            main = { current = true }, -- NOTE: Prevent closing the parent picker
            layout = { preset = 'select' },
            supports_live = false,
            transform = function(item)
              return not (item.pattern == '' and item.search == '')
            end,
            format = function(item)
              local ico = { live = picker.opts.icons.ui.live, prompt = picker.opts.prompt }
              local part1 = item.live and item.pattern or item.search
              local part2 = item.live and item.search or item.pattern
              --
              local text = {}
              table.insert(text, { item.live and ico.live or '  ', 'Special' })
              table.insert(text, { ' ' })
              table.insert(text, { part1, 'SnacksPickerInputSearch' })
              if part1 ~= '' and part2 ~= '' then
                table.insert(text, { ' ' })
                table.insert(text, { ico.prompt, 'SnacksPickerPrompt' })
              end
              table.insert(text, { part2 })
              return text
            end,
            confirm = function(history_picker, item)
              local mode = vim.fn.mode()
              picker.opts.live = item.live
              picker.input:set(item.pattern, item.search)
              history_picker:close()
              if mode == 'i' then
                -- stylua: ignore
                vim.schedule(function() vim.cmd 'startinsert!' end)
              end
            end,
          }
        end,
      },
      win = {
        input = {
          keys = {
            ['<M-/>'] = { 'choose_history', mode = { 'i', 'n' } },

[drowning-cat]

Updated the code again.

• feature: close only the current picker | nested picker closes its parent #2384.

[alcroito]

Thanks, using updated code again.
One small thing, it seems it's not possible to exit the history picker without exiting the parent picker. I tried exiting both with double Esc and Ctrl-C. This closes both pickers.

[alcroito]

I'm on latest commit ( 6ca5417 ), but it still reproduces.
I wonder what's different.

This is the part of my config https://github.com/alcroito/dotfiles/blob/main/home/dot_config/nvim/lua/plugins/snacks.lua#L31

[drowning-cat]

It was hard to find the issue — I already had this patch in my configuration but had forgotten about it. Add this as an additional action:

actions = {
  -- NOTE: Fix cancel action.
  -- See https://github.com/folke/snacks.nvim/discussions/1768#discussioncomment-13243591
  cancel = function(picker) --[[Override]]
    picker:norm(function()
      local main = require('snacks.picker.core.main').new { float = false, file = false, current = true }
      vim.api.nvim_set_current_win(main:get())
      picker:close()
    end)
  end,
},

[alcroito]

I can confirm that fixes it. Thanks again!