* ext/psych/lib/psych/visitors/yaml_tree.rb: fixing string quotation

when dumping Ruby strings. Thanks Ingy

* test/psych/test_psych.rb: appropriate tests.

* test/psych/test_yaml.rb: ditto

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39144 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,12 @@
+Fri Feb  8 08:53:27 2013  Aaron Patterson <aaron@tenderlovemaking.com>
+
+	* ext/psych/lib/psych/visitors/yaml_tree.rb: fixing string quotation
+	  when dumping Ruby strings. Thanks Ingy
+
+	* test/psych/test_psych.rb: appropriate tests.
+
+	* test/psych/test_yaml.rb: ditto
+
 Fri Feb  8 08:50:42 2013  Aaron Patterson <aaron@tenderlovemaking.com>
 
 	* ext/psych/lib/psych/visitors/yaml_tree.rb: change output reference

ext/psych/lib/psych/visitors/yaml_tree.rb

@@ -253,9 +253,9 @@ module Psych
       private :binary?
 
       def visit_String o
-        plain = false
+        plain = true
-        quote = false
+        quote = true
-        style = Nodes::Scalar::ANY
+        style = Nodes::Scalar::PLAIN
         tag   = nil
         str   = o
 
@@ -264,15 +264,14 @@ module Psych
           tag   = '!binary' # FIXME: change to below when syck is removed
           #tag   = 'tag:yaml.org,2002:binary'
           style = Nodes::Scalar::LITERAL
+          plain = false
+          quote = false
         elsif o =~ /\n/
-          quote = true
           style = Nodes::Scalar::LITERAL
-        elsif o =~ /^\W/
-          quote = true
-          style = Nodes::Scalar::DOUBLE_QUOTED
         else
-          quote = !(String === @ss.tokenize(o))
+          unless String === @ss.tokenize(o)
-          plain = !quote
+            style = Nodes::Scalar::SINGLE_QUOTED
+          end
         end
 
         ivars = find_ivars o

test/psych/test_psych.rb

@@ -20,7 +20,7 @@ class TestPsych < Psych::TestCase
 
   def test_canonical
     yml = Psych.dump({:a => {'b' => 'c'}}, {:canonical => true})
-    assert_match(/\? ! "b/, yml)
+    assert_match(/\? "b/, yml)
   end
 
   def test_header

test/psych/test_yaml.rb

@@ -1274,7 +1274,16 @@ EOY
 
     def test_string_starting_with_non_word_character_uses_double_quotes_without_exclamation_mark
       yaml = Psych.dump("@123'abc")
-      assert_match("\"", yaml)
       refute_match("!", yaml)
     end
+
+    def test_string_dump_with_colon
+      yaml = Psych.dump 'x: foo'
+      refute_match '!', yaml
+    end
+
+    def test_string_dump_starting_with_star
+      yaml = Psych.dump '*foo'
+      refute_match '!', yaml
+    end
 end