jump.lua

gistfile1.txt

local CONTEXT = 8

-- change line  col text
--     4    18    9 change one
--     3    28   21 change two
--     2    39   23 change three
--     1    54   13 another change

local function get_text(changelist, current)
  local width = 0
  local lines = {}
  local current_line
  for i = current - 3, current + 10 do
    local j = changelist[i]
    if j then
      local bufname = vim.fn.fnamemodify(vim.api.nvim_buf_get_name(0), ":~:.")
      local line = string.format("%s:%d:%d", bufname, j.lnum, j.col)
      if #line > width then
        width = #line
      end
      lines[#lines + 1] = {
        { bufname },
        { string.format(":%d:%d", j.lnum, j.col), "Directory" },
      }
      if current == i then
        current_line = #lines
      end
      if #lines > CONTEXT then
        break
      end
    end
  end
  return lines, current_line, width
end

local function show_jumps(forward)
  local changelist, last_jump_pos = unpack(vim.fn.getchangelist())
  local changelistResult = vim.inspect(changelist)
  vim.notify(changelistResult)

  local current = last_jump_pos + 1 + (forward and 1 or -1)
  if current == 0 then
    current = 1
  end

  if current > #changelist then
    current = #changelist
  end

  local lines, current_line, width = get_text(changelist, current)
end

vim.keymap.set("n", "<C-o>", function()
  show_jumps()
  return "<C-o>"
end, { expr = true, desc = "show jumps" })

vim.keymap.set("n", "<C-i>", function()
  show_jumps(true)
  return "<C-i>"
end, { expr = true, desc = "show jumps" })