Add ability to disable loading of .iex

Author: alco

lib/iex/lib/iex.ex

@@ -1,4 +1,5 @@
-defrecord IEx.Config, binding: nil, cache: '', counter: 1, scope: nil, result: nil
+defrecord IEx.Config, binding: nil, cache: '', counter: 1, scope: nil,
+                      result: nil, load_dot_iex: true
 
 defmodule IEx do
   @moduledoc %B"""
@@ -204,7 +205,8 @@ defmodule IEx do
 
     IEx.Config[
       binding: opts[:binding] || [],
-      scope: scope
+      scope: scope,
+      load_dot_iex: Keyword.get(opts, :load_dot_iex, true),
     ]
   end
 

lib/iex/lib/iex/server.ex

@@ -14,7 +14,8 @@ defmodule IEx.Server do
     Process.put :iex_history, []
     { _, _, scope } = :elixir.eval('require IEx.Helpers', [], 0, config.scope)
     config = config.scope(scope)
-    config = load_dot_iex(config)
+    if config.load_dot_iex, do:
+      config = load_dot_iex(config)
     do_loop(config)
   end