[mini.pick] pick all defined highlight groups in case you are interested...

[Fro-Q]

So, I noticed that a colorschemes picker is provided in mini.extra, which includes a preview of hl_groups. Some how I find it hard to search for and view the colors and styles of a certain hl_group (or maybe I am just too dumb to know the correct way). What I'd like to have is a picker like highligthts picker in Snacks.

So here's my implementation:

mini_pick.registry.hl_groups = function()
  -- Get all hl name
  local hls = vim.api.nvim_get_hl(0, { link = false })
  local items = {}
  for name, _ in pairs(hls) do
    table.insert(items, name)
  end

  table.sort(items, function(a, b) return a < b end)

  -- Show items with their highlight groups applied
  local show = function(buf_id, items_to_show, _)
    vim.api.nvim_buf_set_lines(buf_id, 0, -1, false, {})

    local lines = {}
    local highlights = {}

    for i, item in ipairs(items_to_show) do
      table.insert(lines, item)

      table.insert(highlights, {
        group = item,
        line = i - 1,
        col_start = 0,
        col_end = -1
      })
    end

    vim.api.nvim_buf_set_lines(buf_id, 0, -1, false, lines)

    local ns_id = vim.api.nvim_create_namespace('mini_pick_hl_groups')
    vim.api.nvim_buf_clear_namespace(buf_id, ns_id, 0, -1)

    for _, hl in ipairs(highlights) do
      pcall(vim.hl.range, buf_id, ns_id, hl.group, { hl.line, hl.col_start }, { hl.line, hl.col_end })
    end
  end

  local preview = function(buf_id, item)
    vim.api.nvim_set_option_value('modifiable', true, { buf = buf_id })
    vim.api.nvim_buf_set_lines(buf_id, 0, -1, false, {})

    local lines = {}

    local hl_def = vim.api.nvim_get_hl(0, { name = item, link = false })

    if next(hl_def) == nil then
      table.insert(lines, "-- No definition")
      vim.api.nvim_buf_set_lines(buf_id, 0, -1, false, lines)
      vim.api.nvim_set_option_value('modifiable', false, { buf = buf_id })
      return
    end

    for k, v in pairs(hl_def) do
      if type(v) == "number" then
        -- Use hex format for colors
        table.insert(lines, string.format("%s = \"#%06x\",", k, v))
      elseif type(v) == "boolean" then
        table.insert(lines, string.format("%s = %s,", k, tostring(v)))
      end
    end

    table.sort(lines, function(a, b)
      return type(a) < type(b)
    end)

    vim.api.nvim_buf_set_lines(buf_id, 0, -1, false, lines)
    vim.api.nvim_set_option_value('modifiable', false, { buf = buf_id })
  end

  local source = {
    items = items,
    name = 'Highlight Groups',
    show = show,
    preview = preview,
    choose = function(item)
      if item then
        -- Copy highlight group name to clipboard
        vim.fn.setreg('+', item)
        vim.notify('Copied "' .. item .. '" to clipboard', vim.log.levels.INFO)
      end
    end
  }

  return MiniPick.start({ source = source })
end

Not elegant but works for me.

[Fro-Q]

oo btw: local mini_pick = require("mini.pick")

[echasnovski]

Thanks for sharing!

If I understand correctly, this is exactly what MiniExtra.pickers.hl_groups does. And even has the same name.

[Fro-Q]

or maybe I am just too dumb to know the correct way

@echasnovski Thx for the kind words even when I done such silly thing! So the lesson is: always take time to read the docs in full :) But honestly—regardless, I really enjoyed the exploration process. And to me, it’s yet another proof that Mini is the greatest.

See ya!

[echasnovski]

We've all been there. Good job on persisting and implementing something that you wanted/needed! 👍