Handle exceptions in plural? and singular?

lib/exflect.ex

@@ -49,7 +49,7 @@ defmodule Exflect do
     match_style = Keyword.get(opts, :match_style, false)
 
     cond do
-      check && Exflect.Detect.singular?(text) -> text
+      check && (Exflect.Shared.uncountable?(text) || Exflect.Detect.singular?(text)) -> text
       true -> unchecked_singularize(text, match_style)
     end
   end
@@ -104,7 +104,7 @@ defmodule Exflect do
     match_style = Keyword.get(opts, :match_style, false)
 
     cond do
-      check && Exflect.Detect.plural?(text) -> text
+      check && (Exflect.Shared.uncountable?(text) || Exflect.Detect.plural?(text)) -> text
       true -> unchecked_pluralize(text, match_style)
     end
   end

lib/exflect/detect.ex

@@ -64,6 +64,23 @@ defmodule Exflect.Detect do
     ~r/[^aouie]s$/
   ]
 
-  def singular?(word), do: Enum.any?(@sg, &Regex.match?(&1, word)) || !plural?(word)
-  def plural?(word), do: Enum.any?(@pl, &Regex.match?(&1, word))
+  @singular_exceptions Exflect.Shared.exceptions(:singularize)
+  @plural_exceptions Exflect.Shared.exceptions(:pluralize)
+
+  for {word, _} <- @plural_exceptions do
+    def singular?(unquote(word)), do: true
+  end
+
+  def singular?(word) do
+    Enum.any?(@sg, &Regex.match?(&1, word)) ||
+      !plural?(word)
+  end
+
+  for {word, _} <- @singular_exceptions do
+    def plural?(unquote(word)), do: true
+  end
+
+  def plural?(word) do
+    Enum.any?(@pl, &Regex.match?(&1, word))
+  end
 end

test/exflect_test.exs

@@ -44,6 +44,18 @@ defmodule ExflectTest do
     assert(equal?(Exflect.singularize("bus", check: true), "bus"))
   end
 
+  test "exceptions" do
+    assert(Exflect.singular?("child"))
+    refute(Exflect.singular?("children"))
+    assert(Exflect.plural?("children"))
+    refute(Exflect.plural?("child"))
+
+    assert(equal?(Exflect.pluralize("children", check: true), "children"))
+    assert(equal?(Exflect.singularize("children", check: true), "child"))
+    assert(equal?(Exflect.singularize("child", check: true), "child"))
+    assert(equal?(Exflect.pluralize("child", check: true), "children"))
+  end
+
   @tag :benchmark
   test "benchmark" do
     %{