* ext/psych/lib/psych/visitors/to_ruby.rb: fix support for regular

expressions with newlines. tenderlove/psych#222

* test/psych/test_yaml.rb: test for change.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@49524 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,10 @@
+Fri Feb  6 16:58:31 2015  Aaron Patterson <aaron@tenderlovemaking.com>
+
+	* ext/psych/lib/psych/visitors/to_ruby.rb: fix support for regular
+	  expressions with newlines. tenderlove/psych#222
+
+	* test/psych/test_yaml.rb: test for change.
+
 Fri Feb  6 10:31:50 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* vm_core.h (rb_call_info_kw_arg_struct): make keywords a symbols

ext/psych/lib/psych/visitors/to_ruby.rb

@@ -32,7 +32,7 @@ module Psych
         return result if @domain_types.empty? || !target.tag
 
         key = target.tag.sub(/^[!\/]*/, '').sub(/(,\d+)\//, '\1:')
-        key = "tag:#{key}" unless key =~ /^(tag:|x-private)/
+        key = "tag:#{key}" unless key =~ /^(?:tag:|x-private)/
 
         if @domain_types.key? key
           value, block = @domain_types[key]
@@ -89,7 +89,7 @@ module Psych
           Float(@ss.tokenize(o.value))
         when "!ruby/regexp"
           klass = class_loader.regexp
-          o.value =~ /^\/(.*)\/([mixn]*)$/
+          o.value =~ /^\/(.*)\/([mixn]*)$/m
           source  = $1
           options = 0
           lang    = nil

test/psych/test_yaml.rb

@@ -27,6 +27,10 @@ class Psych_Unit_Tests < Psych::TestCase
       assert_match "2010-10-10 00:00:00.000000000 Z", yaml
     end
 
+    def test_multiline_regexp
+        assert_cycle(Regexp.new("foo\nbar"))
+    end
+
     # [ruby-core:34969]
     def test_regexp_with_n
         assert_cycle(Regexp.new('',0,'n'))