Handle quotation marks in section names

The section name appears on a line by itself, in square brackets (`[` and
`]`), all characters between the opening `[` and the closing `]` should
be considered to form the section name.

lib/puppet/util/ini_file.rb

@@ -5,7 +5,7 @@ module Puppet
 module Util
   class IniFile
 
-    @@SECTION_REGEX = /^\s*\[([\w\d\.\\\/\-\:\s]*[\w\d\.\\\/\-])\]\s*$/
+    @@SECTION_REGEX = /^\s*\[([^\]]*)\]\s*$/
     @@SETTING_REGEX = /^(\s*)([^\[#;][\w\d\.\\\/\-\s\[\]\']*[\w\d\.\\\/\-\]])([ \t]*=[ \t]*)([\S\s]*?)\s*$/
     @@COMMENTED_SETTING_REGEX = /^(\s*)[#;]+(\s*)([^\[]*[\w\d\.\\\/\-]+[\w\d\.\\\/\-\[\]\']+)([ \t]*=[ \t]*)([\S\s]*?)\s*$/
 

spec/unit/puppet/util/ini_file_spec.rb

@@ -141,4 +141,29 @@ foo=
       subject.get_value("section1", "baz").should == "bazvalue"
     end
   end
+
+  context 'the file has quotation marks in its section names' do
+    let(:sample_content) do
+      template = <<-EOS
+[branch "master"]
+        remote = origin
+        merge = refs/heads/master
+
+[alias]
+to-deploy = log --merges --grep='pull request' --format='%s (%cN)' origin/production..origin/master
+[branch "production"]
+        remote = origin
+        merge = refs/heads/production
+      EOS
+      template.split("\n")
+    end
+
+    it 'should parse the sections' do
+      subject.section_names.should match_array ['',
+                                                'branch "master"',
+                                                'alias',
+                                                'branch "production"'
+      ]
+    end
+  end
 end