New: Parse `VIE` as Vietnamese language

src/NzbDrone.Core.Test/ParserTests/LanguageParserFixture.cs

@@ -219,6 +219,7 @@ namespace NzbDrone.Core.Test.ParserTests
         }
 
         [TestCase("Movie.Title.1994.Vietnamese.1080p.XviD-LOL")]
+        [TestCase("Movie.Title.1994.VIE.1080p.XviD-LOL")]
         public void should_parse_language_vietnamese(string postTitle)
         {
             var result = Parser.Parser.ParseMovieTitle(postTitle, true);

src/NzbDrone.Core/Parser/LanguageParser.cs

@@ -31,7 +31,8 @@ namespace NzbDrone.Core.Parser
                                                                             (?<ukrainian>(?:(?:\dx)?UKR))|
                                                                             (?<spanish>\b(?:español|castellano)\b)|
                                                                             (?<latvian>\bLV\b)|
-                                                                            (?<telugu>\btel\b)",
+                                                                            (?<telugu>\btel\b)|
+                                                                            (?<vietnamese>\bVIE\b)",
                                                                 RegexOptions.IgnoreCase | RegexOptions.Compiled | RegexOptions.IgnorePatternWhitespace);
 
         private static readonly Regex CaseSensitiveLanguageRegex = new Regex(@"(?:(?i)(?<!SUB[\W|_|^]))(?:(?<lithuanian>\bLT\b)|
@@ -347,6 +348,11 @@ namespace NzbDrone.Core.Parser
                 {
                     languages.Add(Language.Telugu);
                 }
+
+                if (match.Groups["vietnamese"].Success)
+                {
+                    languages.Add(Language.Vietnamese);
+                }
             }
 
             if (!languages.Any())