Time.parse's "now" argument as nil works again.

* lib/time.rb (make_time): "now" argument as nil works again.
  This is broken since Ruby 2.2.
  Mathieu Jobin pointed a problem.
  e4b05d91eb (commitcomment-17421387)



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,10 @@
+Sat Nov  5 22:51:06 2016  Tanaka Akira  <akr@fsij.org>
+
+	* lib/time.rb (make_time): "now" argument as nil works again.
+	  This is broken since Ruby 2.2.
+	  Mathieu Jobin pointed a problem.
+	  https://github.com/ruby/ruby/commit/e4b05d91eb0d48fd172abf015c493bb42d755d07#commitcomment-17421387
+
 Sat Nov  5 22:50:13 2016  Akinori MUSHA  <knu@iDaemons.org>
 
 	* lib/ipaddr.rb (IPAddr#==): If coercion fails, return false

lib/time.rb

@@ -254,14 +254,18 @@ class Time
         raise ArgumentError, "no time information in #{date.inspect}"
       end
 
-      off_year = year || now.year
       off = nil
-      off = zone_offset(zone, off_year) if zone
+      if year || now
+        off_year = year || now.year
+        off = zone_offset(zone, off_year) if zone
+      end
 
-      if off
-        now = now.getlocal(off) if now.utc_offset != off
-      else
-        now = now.getlocal
+      if now
+        if off
+          now = now.getlocal(off) if now.utc_offset != off
+        else
+          now = now.getlocal
+        end
       end
 
       usec = nil

test/test_time.rb

@@ -338,6 +338,11 @@ class TestTimeExtension < Test::Unit::TestCase # :nodoc:
     assert_equal(t1.utc?, t2.utc?)
   end
 
+  def test_parse_now_nil
+    assert_equal(Time.new(2000,1,1,0,0,0,"+11:00"),
+                 Time.parse("2000-01-01T00:00:00+11:00", nil))
+  end
+
   def test_parse_leap_second
     t = Time.utc(1998,12,31,23,59,59)
     assert_equal(t, Time.parse("Thu Dec 31 23:59:59 UTC 1998"))