WikiFunctions.Parse.Parsers.MergeMultipleMI C# (CSharp) Method

        private string MergeMultipleMI(string articleText)
        {
            string originalArticleText = articleText, mi = "";

            articleText = WikiRegexes.MultipleIssues.Replace(articleText, m =>
            {
                string tags = Tools.GetTemplateArgument(m.Value, 1);

                // do not process if a MI section template
                if (tags.Contains("{{") || tags.Equals(""))
                {
                    mi +=tags;
                    return "";
                }

                return m.Value;
            });

            // do nothing if found a MI section template
            if (WikiRegexes.MultipleIssues.IsMatch(articleText))
                return originalArticleText;

            // extract and de-duplicate tags
            List<string> miTags = Parsers.DeduplicateMaintenanceTags((from Match m in WikiRegexes.NestedTemplates.Matches(mi)
                                                                  select m.Value).ToList());

            mi = string.Join("\r\n", miTags.ToArray());

            return @"{{Multiple issues|" + "\r\n" + mi + "\r\n" + @"}}" + articleText;
        }