add Pathname.home

lib/pathname_builtin.rb

@@ -165,6 +165,7 @@
 # These methods are a facade for Dir:
 # - Pathname.glob(*args)
 # - Pathname.getwd / Pathname.pwd
+# - Pathname.home
 # - #rmdir
 # - #entries
 # - #each_entry(&block)
@@ -1126,6 +1127,10 @@ class << self
     alias pwd getwd
   end
 
+  # See <tt>Dir.home</tt>.  Returns the home directory of the current user, or
+  # the named user if given, as a Pathname.
+  def Pathname.home(user_name = nil) self.new(Dir.home(user_name)) end
+
   # Return the entries (files and subdirectories) in the directory, each as a
   # Pathname object.
   def entries() Dir.entries(@path).map {|f| self.class.new(f) } end

test/pathname/test_pathname.rb

@@ -1364,6 +1364,15 @@ def test_s_pwd
     assert_kind_of(Pathname, wd)
   end
 
+  def test_s_home
+    home = Pathname.home
+    assert_kind_of(Pathname, home)
+    assert_equal(Dir.home, home.to_path)
+    user_home = Pathname.home(ENV['USER'])
+    assert_kind_of(Pathname, user_home)
+    assert_equal(Dir.home(ENV['USER']), user_home.to_path)
+  end
+
   def test_glob
     with_tmpchdir('rubytest-pathname') {|dir|
       Dir.mkdir("d")