Fix incorrect subtitle copy regex

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

@@ -444,6 +444,7 @@ namespace NzbDrone.Core.Test.ParserTests
         [TestCase("Name (2020) - S01E20 - [AAC 2.0].ru-something-else.srt", new string[0], "something-else", "Russian")]
         [TestCase("Name (2020) - S01E20 - [AAC 2.0].Full Subtitles.eng.ass", new string[0], "Full Subtitles", "English")]
         [TestCase("Name (2020) - S01E20 - [AAC 2.0].mytitle - 1.en.ass", new string[0], "mytitle", "English")]
+        [TestCase("Name (2020) - S01E20 - [AAC 2.0].mytitle 1.en.ass", new string[0], "mytitle 1", "English")]
         [TestCase("Name (2020) - S01E20 - [AAC 2.0].mytitle.en.ass", new string[0], "mytitle", "English")]
         public void should_parse_title_and_tags(string postTitle, string[] expectedTags, string expectedTitle, string expectedLanguage)
         {

src/NzbDrone.Core/Parser/LanguageParser.cs

@@ -33,7 +33,7 @@ namespace NzbDrone.Core.Parser
 
         private static readonly Regex SubtitleLanguageTitleRegex = new Regex(@".+?(\.((?<tags1>forced|foreign|default|cc|psdh|sdh)|(?<iso_code>[a-z]{2,3})))*[-_. ](?<title>[^.]*)(\.((?<tags2>forced|foreign|default|cc|psdh|sdh)|(?<iso_code>[a-z]{2,3})))*$", RegexOptions.Compiled | RegexOptions.IgnoreCase);
 
-        private static readonly Regex SubtitleTitleRegex = new Regex(@"((?<title>.+) - )?(?<copy>(?<!\d+)\d{1,3}(?!\d+))$", RegexOptions.Compiled);
+        private static readonly Regex SubtitleTitleRegex = new Regex(@"^((?<title>.+) - )?(?<copy>(?<!\d+)\d{1,3}(?!\d+))$", RegexOptions.Compiled);
 
         public static List<Language> ParseLanguages(string title)
         {