Fully support inspect_opts in IEx.Options

Author: alco

lib/elixir/lib/kernel.ex

@@ -1890,19 +1890,19 @@ defmodule Kernel do
 
   ## Options
 
-  The following options are supported:
-
-  * :raw - tuples are not formatted as the inspect protocol, they are
-    always shown as tuples, defaults to false;
-
-  * :limit - the limit of items that are shown in tuples, bitstrings and
-    lists. Does not apply to strings;
+  See the docs for IEx.Options for more details.
 
   ## Examples
 
       iex> inspect(:foo)
       ":foo"
 
+      inspect(ArgumentError[])
+      #=> "ArgumentError[message: \"argument error\"]"
+
+      inspect(ArgumentError[], raw: true)
+      #=> "{ArgumentError,:__exception__,\"argument error\"}"
+
   Note that the inspect protocol does not necessarily return a valid
   representation of an Elixir term. In such cases, the inspected result must
   start with `#`. For example, inspecting a function will return:

lib/iex/lib/iex/options.ex

@@ -24,7 +24,20 @@ defmodule IEx.Options do
         """
     ],
     inspect: [
-      doc: ""
+      doc: """
+        Control the behavior of the shell's inspecting algorithm. Inspect is
+        used for printing results of evaluating expressions. It is also used by IO.inspect.
+
+        The value is a keyword list that should have any of the following keys
+        specified. If any of the keys is omitted, that option is not changed.
+
+          * raw   -- when true, record tuples are not formatted by the inspect protocol,
+                     but are printed as just tuples; default: false
+
+          * limit -- limits the number of items that are printed for tuples, bitstrings,
+                     and lists; does not apply to strings
+
+        """
     ],
   ]
 
@@ -69,6 +82,7 @@ defmodule IEx.Options do
 
   def set(:inspect, opts) when is_list(opts) do
     old_opts = IEx.inspect_opts
+    # FIXME: validate keys before setting
     IEx.inspect_opts(opts)
     old_opts
   end

lib/iex/mix.exs

@@ -8,7 +8,7 @@ defmodule IEx.Mixfile do
   def application do
     [env: [
       after_spawn: [],
-      inspect_opts: [limit: 50],
+      inspect_opts: [limit: 50, raw: false],
       colors: [
         enabled: true,
         eval_result: "yellow",