WeeChat plugin to store login credentials in a separate file. Create a `login` file in `~/.weechat/login` and put a connection command on each line.

login

irc.freenode.net -username=toethumb -autojoin=weechat,test -nicks=toethumb
irc.quakenet.org -nicks=ninjaduck,ninjaduck2 -autojoin=mmo-champion

secretauth.lua

local w = weechat -- lazy

local SCRIPT = {
  name    = "secretauth",
  author  = "Francesco Ceccon",
  version = "0.1",
  license = "Public Domain",
  desc    = "Store server credentials in a separate file"
}

w.register(SCRIPT.name, SCRIPT.author, SCRIPT.version, SCRIPT.license,
  SCRIPT.desc, "", "")

-- Write an error message in the weechat buffer
function print_error(buffer, ...)
  w.print(buffer, w.prefix("error") .. unpack(arg))
end

-- Expand the path if it begins with ~/
function expand_path(path)
  if path:sub(1,2) == "~/" then
    return os.getenv("HOME") .. path:sub(2)
  end
end

-- Load config
local config = { data = {} }
setmetatable(config, {
  __index = function(t, k)
    return w.config_string(t.data[k])
  end
})
do
  config.file = w.config_new(SCRIPT.name, function(_, file)
    return w.config_reload(file)
  end, "")
  if not config.file then return end
  config.login = w.config_new_section(
    config.file, "login", 0, 0, "", "", "", "", "", "", "", "", "", ""
  )
  local c = config.data
  c.login_file = w.config_new_option(
    config.file,
    config.login,
    "file", "string", "The file containing the login commands",
    "", 0, 0, "~/.weechat/login", "~/.weechat/login", 0, "", "", "", "", "", ""
  )
  w.config_read(config.file)
end

w.print(nil, "Reading " .. config.login_file)
local file_path = expand_path(config.login_file)
local f = io.open(file_path, "r")
if f == nil then
  print_error(nil, "Error while reading " .. file_path)
  return
end

for connection in f:lines() do
  w.print(nil, "Connecting to " .. connection)
  w.command(nil, "/connect " .. connection)
end
f:close()