include multiple display-name entries in xmltv (#1198)

CHANGELOG.md

@@ -13,6 +13,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ### Changed
 - Ignore case of video and audio file extensions in local folder scanner
   - For example, the scanner will now find `movie.MKV` as well as `movie.mkv` on case-sensitive filesystems
+- Include multiple `display-name` entries in generated XMLTV
+  - Plex should now display the channel number instead of the channel id (e.g. `1.2` instead of `1.2.etv`)
 
 ## [0.7.5-beta] - 2023-03-05
 ### Added

ErsatzTV.Core/Iptv/ChannelGuide.cs

@@ -53,9 +53,16 @@ public class ChannelGuide
                 xml.WriteAttributeString("id", $"{channel.Number}.etv");
 
                 xml.WriteStartElement("display-name");
-                xml.WriteAttributeString("lang", "en");
+                xml.WriteString($"{channel.Number} {channel.Name}");
+                xml.WriteEndElement(); // display-name (number and name)
+
+                xml.WriteStartElement("display-name");
+                xml.WriteString(channel.Number);
+                xml.WriteEndElement(); // display-name (number)
+
+                xml.WriteStartElement("display-name");
                 xml.WriteString(channel.Name);
-                xml.WriteEndElement(); // display-name
+                xml.WriteEndElement(); // display-name (name)
 
                 foreach (string category in GetCategories(channel.Categories))
                 {