.erc

set_tab(2) -- sets tab width

-- registers a meta command under `:hi` that inserts hi and notifies you
meta_commands["hi"] = function()
  insertn("hi")
  message("hi inserted")
end

-- registers a custom key under `%` that implements word count
keys["%"] = function()
  s = get_text()
  count = 0

  for word in s:gmatch("%w+") do count = count + 1 end

  message(count .. " words")
end

-- lists all meta commands
function get_meta_commands()
  res = ""

  for k, _ in pairs(meta_commands) do
    res = res .. k .. ", "
  end

  return res
end

-- lists all custom keys
function get_keys()
  res = ""

  for k, _ in pairs(keys) do
    res = res .. k .. ", "
  end

  return res
end

-- registers a meta command `:help` that lists all meta commands and custom keys
meta_commands["help"] = function()
  s = "meta commands: " .. get_meta_commands() .. "custom keys: " .. get_keys()

  message(s:sub(1, -3))
end