Remove m/0 helper

The goal is to come up with a general
IEx module for runtime statistics.

Author: José Valim

lib/iex/lib/iex/helpers.ex

@@ -20,7 +20,6 @@ defmodule IEx.Helpers do
   * `l/1`       — loads the given module's beam code and purges the current version
   * `ls/0`      — lists the contents of the current directory
   * `ls/1`      — lists the contents of the specified directory
-  * `m/0`       — prints loaded modules
   * `pwd/0`     — prints the current working directory
   * `r/1`       — recompiles and reloads the given module's source file
   * `respawn/0` — respawns the current shell
@@ -98,22 +97,6 @@ defmodule IEx.Helpers do
     dont_display_result
   end
 
-  @doc """
-  Prints the list of all loaded modules with paths to
-  their corresponding `.beam` files.
-  """
-  def m do
-    all    = Enum.map :code.all_loaded, fn { mod, file } -> { inspect(mod), file } end
-    sorted = Enum.sort all
-    size   = Enum.reduce sorted, 0, fn({ mod, _ }, acc) -> max(byte_size(mod), acc) end
-    format = "~-#{size}s ~ts~n"
-
-    Enum.each sorted, fn({ mod, file }) ->
-      :io.format(format, [mod, file])
-    end
-    dont_display_result
-  end
-
   @doc """
   Prints the documentation for `IEx.Helpers`.
   """

lib/iex/test/iex/helpers_test.exs

@@ -179,20 +179,6 @@ defmodule IEx.HelpersTest do
     end
   end
 
-  test "m helper" do
-    regexes = [
-      %r/^:application\s+.+application\.beam$/,
-      %r/^:code\s+.+code\.beam$/,
-      %r/^Kernel\s+.+Elixir\.Kernel\.beam$/,
-    ]
-
-    assert Enum.count(capture_io(fn -> m end) |> String.split("\n"), fn line ->
-      Enum.any? regexes, fn re ->
-        Regex.match? re, line
-      end
-    end) >= 2
-  end
-
   test "c helper" do
     assert_raise UndefinedFunctionError, "undefined function: Sample.run/0", fn ->
       Sample.run